ffmpeg: cleanup
git-svn-id: svn://kolibrios.org@4369 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Sergey Semyonov (Serge)
parent
122a2a0bd0
commit
59eca36556
@ -1,275 +0,0 @@
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.\" ========================================================================
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.\"
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.IX Title "FFMPEG-BITSTREAM-FILTERS 1"
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.TH FFMPEG-BITSTREAM-FILTERS 1 "2013-12-14" " " " "
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.SH "NAME"
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ffmpeg\-bitstream\-filters \- FFmpeg bitstream filters
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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This document describes the bitstream filters provided by the
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libavcodec library.
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.PP
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A bitstream filter operates on the encoded stream data, and performs
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bitstream level modifications without performing decoding.
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.SH "BITSTREAM FILTERS"
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.IX Header "BITSTREAM FILTERS"
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When you configure your FFmpeg build, all the supported bitstream
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filters are enabled by default. You can list all available ones using
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the configure option \f(CW\*(C`\-\-list\-bsfs\*(C'\fR.
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.PP
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You can disable all the bitstream filters using the configure option
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\&\f(CW\*(C`\-\-disable\-bsfs\*(C'\fR, and selectively enable any bitstream filter using
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the option \f(CW\*(C`\-\-enable\-bsf=BSF\*(C'\fR, or you can disable a particular
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bitstream filter using the option \f(CW\*(C`\-\-disable\-bsf=BSF\*(C'\fR.
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.PP
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The option \f(CW\*(C`\-bsfs\*(C'\fR of the ff* tools will display the list of
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all the supported bitstream filters included in your build.
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.PP
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Below is a description of the currently available bitstream filters.
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.Sh "aac_adtstoasc"
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.IX Subsection "aac_adtstoasc"
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Convert \s-1MPEG\-2/4\s0 \s-1AAC\s0 \s-1ADTS\s0 to \s-1MPEG\-4\s0 Audio Specific Configuration
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bitstream filter.
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.PP
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This filter creates an \s-1MPEG\-4\s0 AudioSpecificConfig from an \s-1MPEG\-2/4\s0
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\&\s-1ADTS\s0 header and removes the \s-1ADTS\s0 header.
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.PP
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This is required for example when copying an \s-1AAC\s0 stream from a raw
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\&\s-1ADTS\s0 \s-1AAC\s0 container to a \s-1FLV\s0 or a \s-1MOV/MP4\s0 file.
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.Sh "chomp"
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.IX Subsection "chomp"
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Remove zero padding at the end of a packet.
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.Sh "dump_extra"
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.IX Subsection "dump_extra"
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Add extradata to the beginning of the filtered packets.
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.PP
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The additional argument specifies which packets should be filtered.
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It accepts the values:
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.IP "\fBa\fR" 4
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.IX Item "a"
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add extradata to all key packets, but only if \fIlocal_header\fR is
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set in the \fBflags2\fR codec context field
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.IP "\fBk\fR" 4
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.IX Item "k"
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add extradata to all key packets
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.IP "\fBe\fR" 4
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.IX Item "e"
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add extradata to all packets
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.PP
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If not specified it is assumed \fBk\fR.
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.PP
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For example the following \fBffmpeg\fR command forces a global
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header (thus disabling individual packet headers) in the H.264 packets
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generated by the \f(CW\*(C`libx264\*(C'\fR encoder, but corrects them by adding
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the header stored in extradata to the key packets:
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.PP
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.Vb 1
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\& ffmpeg -i INPUT -map 0 -flags:v +global_header -c:v libx264 -bsf:v dump_extra out.ts
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.Ve
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.Sh "h264_mp4toannexb"
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.IX Subsection "h264_mp4toannexb"
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Convert an H.264 bitstream from length prefixed mode to start code
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prefixed mode (as defined in the Annex B of the ITU-T H.264
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specification).
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.PP
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This is required by some streaming formats, typically the \s-1MPEG\-2\s0
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transport stream format (\*(L"mpegts\*(R").
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.PP
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For example to remux an \s-1MP4\s0 file containing an H.264 stream to mpegts
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format with \fBffmpeg\fR, you can use the command:
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.PP
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.Vb 1
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\& ffmpeg -i INPUT.mp4 -codec copy -bsf:v h264_mp4toannexb OUTPUT.ts
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.Ve
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.Sh "imx_dump_header"
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.IX Subsection "imx_dump_header"
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.Sh "mjpeg2jpeg"
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.IX Subsection "mjpeg2jpeg"
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Convert \s-1MJPEG/AVI1\s0 packets to full \s-1JPEG/JFIF\s0 packets.
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.PP
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\&\s-1MJPEG\s0 is a video codec wherein each video frame is essentially a
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\&\s-1JPEG\s0 image. The individual frames can be extracted without loss,
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e.g. by
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.PP
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.Vb 1
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\& ffmpeg -i ../some_mjpeg.avi -c:v copy frames_%d.jpg
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.Ve
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.PP
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Unfortunately, these chunks are incomplete \s-1JPEG\s0 images, because
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they lack the \s-1DHT\s0 segment required for decoding. Quoting from
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<\fBhttp://www.digitalpreservation.gov/formats/fdd/fdd000063.shtml\fR>:
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.PP
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Avery Lee, writing in the rec.video.desktop newsgroup in 2001,
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commented that \*(L"\s-1MJPEG\s0, or at least the \s-1MJPEG\s0 in AVIs having the
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\&\s-1MJPG\s0 fourcc, is restricted \s-1JPEG\s0 with a fixed \*(-- and *omitted* \*(--
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Huffman table. The \s-1JPEG\s0 must be YCbCr colorspace, it must be 4:2:2,
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and it must use basic Huffman encoding, not arithmetic or
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progressive. . . . You can indeed extract the \s-1MJPEG\s0 frames and
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decode them with a regular \s-1JPEG\s0 decoder, but you have to prepend
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the \s-1DHT\s0 segment to them, or else the decoder won't have any idea
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how to decompress the data. The exact table necessary is given in
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the OpenDML spec.\*(R"
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.PP
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This bitstream filter patches the header of frames extracted from an \s-1MJPEG\s0
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stream (carrying the \s-1AVI1\s0 header \s-1ID\s0 and lacking a \s-1DHT\s0 segment) to
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produce fully qualified \s-1JPEG\s0 images.
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.PP
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.Vb 3
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\& ffmpeg -i mjpeg-movie.avi -c:v copy -bsf:v mjpeg2jpeg frame_%d.jpg
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\& exiftran -i -9 frame*.jpg
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\& ffmpeg -i frame_%d.jpg -c:v copy rotated.avi
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.Ve
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.Sh "mjpega_dump_header"
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.IX Subsection "mjpega_dump_header"
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.Sh "movsub"
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.IX Subsection "movsub"
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.Sh "mp3_header_compress"
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.IX Subsection "mp3_header_compress"
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.Sh "mp3_header_decompress"
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.IX Subsection "mp3_header_decompress"
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.Sh "noise"
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.IX Subsection "noise"
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.Sh "remove_extra"
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.IX Subsection "remove_extra"
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.SH "SEE ALSO"
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.IX Header "SEE ALSO"
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\&\fIffmpeg\fR\|(1), \fIffplay\fR\|(1), \fIffprobe\fR\|(1), \fIffserver\fR\|(1), \fIlibavcodec\fR\|(3)
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.SH "AUTHORS"
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.IX Header "AUTHORS"
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The FFmpeg developers.
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.PP
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For details about the authorship, see the Git history of the project
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(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
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\&\fBgit log\fR in the FFmpeg source directory, or browsing the
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online repository at <\fBhttp://source.ffmpeg.org\fR>.
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.PP
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Maintainers for the specific components are listed in the file
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\&\fI\s-1MAINTAINERS\s0\fR in the source code tree.
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.\" Automatically generated by Pod::Man v1.37, Pod::Parser v1.32
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.\"
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.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
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.\" double quote, and \*(R" will give a right double quote. | will give a
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.\" real vertical bar. \*(C+ will give a nicer C++. Capital omega is used to
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.\" do unbreakable dashes and therefore won't be available. \*(C` and \*(C'
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||||||
. ds R" ""
|
|
||||||
. ds C` ""
|
|
||||||
. ds C' ""
|
|
||||||
'br\}
|
|
||||||
.el\{\
|
|
||||||
. ds -- \|\(em\|
|
|
||||||
. ds PI \(*p
|
|
||||||
. ds L" ``
|
|
||||||
. ds R" ''
|
|
||||||
'br\}
|
|
||||||
.\"
|
|
||||||
.\" If the F register is turned on, we'll generate index entries on stderr for
|
|
||||||
.\" titles (.TH), headers (.SH), subsections (.Sh), items (.Ip), and index
|
|
||||||
.\" entries marked with X<> in POD. Of course, you'll have to process the
|
|
||||||
.\" output yourself in some meaningful fashion.
|
|
||||||
.if \nF \{\
|
|
||||||
. de IX
|
|
||||||
. tm Index:\\$1\t\\n%\t"\\$2"
|
|
||||||
..
|
|
||||||
. nr % 0
|
|
||||||
. rr F
|
|
||||||
.\}
|
|
||||||
.\"
|
|
||||||
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
|
|
||||||
.\" way too many mistakes in technical documents.
|
|
||||||
.hy 0
|
|
||||||
.if n .na
|
|
||||||
.\"
|
|
||||||
.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
|
|
||||||
.\" Fear. Run. Save yourself. No user-serviceable parts.
|
|
||||||
. \" fudge factors for nroff and troff
|
|
||||||
.if n \{\
|
|
||||||
. ds #H 0
|
|
||||||
. ds #V .8m
|
|
||||||
. ds #F .3m
|
|
||||||
. ds #[ \f1
|
|
||||||
. ds #] \fP
|
|
||||||
.\}
|
|
||||||
.if t \{\
|
|
||||||
. ds #H ((1u-(\\\\n(.fu%2u))*.13m)
|
|
||||||
. ds #V .6m
|
|
||||||
. ds #F 0
|
|
||||||
. ds #[ \&
|
|
||||||
. ds #] \&
|
|
||||||
.\}
|
|
||||||
. \" simple accents for nroff and troff
|
|
||||||
.if n \{\
|
|
||||||
. ds ' \&
|
|
||||||
. ds ` \&
|
|
||||||
. ds ^ \&
|
|
||||||
. ds , \&
|
|
||||||
. ds ~ ~
|
|
||||||
. ds /
|
|
||||||
.\}
|
|
||||||
.if t \{\
|
|
||||||
. ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u"
|
|
||||||
. ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u'
|
|
||||||
. ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
|
|
||||||
. ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u'
|
|
||||||
. ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u'
|
|
||||||
. ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
|
|
||||||
.\}
|
|
||||||
. \" troff and (daisy-wheel) nroff accents
|
|
||||||
.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
|
|
||||||
.ds 8 \h'\*(#H'\(*b\h'-\*(#H'
|
|
||||||
.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#]
|
|
||||||
.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
|
|
||||||
.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
|
|
||||||
.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
|
|
||||||
.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#]
|
|
||||||
.ds ae a\h'-(\w'a'u*4/10)'e
|
|
||||||
.ds Ae A\h'-(\w'A'u*4/10)'E
|
|
||||||
. \" corrections for vroff
|
|
||||||
.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
|
|
||||||
.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
|
|
||||||
. \" for low resolution devices (crt and lpr)
|
|
||||||
.if \n(.H>23 .if \n(.V>19 \
|
|
||||||
\{\
|
|
||||||
. ds : e
|
|
||||||
. ds 8 ss
|
|
||||||
. ds o a
|
|
||||||
. ds d- d\h'-1'\(ga
|
|
||||||
. ds D- D\h'-1'\(hy
|
|
||||||
. ds th \o'bp'
|
|
||||||
. ds Th \o'LP'
|
|
||||||
. ds ae ae
|
|
||||||
. ds Ae AE
|
|
||||||
.\}
|
|
||||||
.rm #[ #] #H #V #F C
|
|
||||||
.\" ========================================================================
|
|
||||||
.\"
|
|
||||||
.IX Title "FFMPEG-RESAMPLER 1"
|
|
||||||
.TH FFMPEG-RESAMPLER 1 "2013-12-14" " " " "
|
|
||||||
.SH "NAME"
|
|
||||||
ffmpeg\-resampler \- FFmpeg Resampler
|
|
||||||
.SH "DESCRIPTION"
|
|
||||||
.IX Header "DESCRIPTION"
|
|
||||||
The FFmpeg resampler provides a high-level interface to the
|
|
||||||
libswresample library audio resampling utilities. In particular it
|
|
||||||
allows to perform audio resampling, audio channel layout rematrixing,
|
|
||||||
and convert audio format and packing layout.
|
|
||||||
.SH "RESAMPLER OPTIONS"
|
|
||||||
.IX Header "RESAMPLER OPTIONS"
|
|
||||||
The audio resampler supports the following named options.
|
|
||||||
.PP
|
|
||||||
Options may be set by specifying \-\fIoption\fR \fIvalue\fR in the
|
|
||||||
FFmpeg tools, \fIoption\fR=\fIvalue\fR for the aresample filter,
|
|
||||||
by setting the value explicitly in the
|
|
||||||
\&\f(CW\*(C`SwrContext\*(C'\fR options or using the \fIlibavutil/opt.h\fR \s-1API\s0 for
|
|
||||||
programmatic use.
|
|
||||||
.IP "\fBich, in_channel_count\fR" 4
|
|
||||||
.IX Item "ich, in_channel_count"
|
|
||||||
Set the number of input channels. Default value is 0. Setting this
|
|
||||||
value is not mandatory if the corresponding channel layout
|
|
||||||
\&\fBin_channel_layout\fR is set.
|
|
||||||
.IP "\fBoch, out_channel_count\fR" 4
|
|
||||||
.IX Item "och, out_channel_count"
|
|
||||||
Set the number of output channels. Default value is 0. Setting this
|
|
||||||
value is not mandatory if the corresponding channel layout
|
|
||||||
\&\fBout_channel_layout\fR is set.
|
|
||||||
.IP "\fBuch, used_channel_count\fR" 4
|
|
||||||
.IX Item "uch, used_channel_count"
|
|
||||||
Set the number of used input channels. Default value is 0. This option is
|
|
||||||
only used for special remapping.
|
|
||||||
.IP "\fBisr, in_sample_rate\fR" 4
|
|
||||||
.IX Item "isr, in_sample_rate"
|
|
||||||
Set the input sample rate. Default value is 0.
|
|
||||||
.IP "\fBosr, out_sample_rate\fR" 4
|
|
||||||
.IX Item "osr, out_sample_rate"
|
|
||||||
Set the output sample rate. Default value is 0.
|
|
||||||
.IP "\fBisf, in_sample_fmt\fR" 4
|
|
||||||
.IX Item "isf, in_sample_fmt"
|
|
||||||
Specify the input sample format. It is set by default to \f(CW\*(C`none\*(C'\fR.
|
|
||||||
.IP "\fBosf, out_sample_fmt\fR" 4
|
|
||||||
.IX Item "osf, out_sample_fmt"
|
|
||||||
Specify the output sample format. It is set by default to \f(CW\*(C`none\*(C'\fR.
|
|
||||||
.IP "\fBtsf, internal_sample_fmt\fR" 4
|
|
||||||
.IX Item "tsf, internal_sample_fmt"
|
|
||||||
Set the internal sample format. Default value is \f(CW\*(C`none\*(C'\fR.
|
|
||||||
This will automatically be chosen when it is not explicitly set.
|
|
||||||
.IP "\fBicl, in_channel_layout\fR" 4
|
|
||||||
.IX Item "icl, in_channel_layout"
|
|
||||||
.PD 0
|
|
||||||
.IP "\fBocl, out_channel_layout\fR" 4
|
|
||||||
.IX Item "ocl, out_channel_layout"
|
|
||||||
.PD
|
|
||||||
Set the input/output channel layout.
|
|
||||||
.Sp
|
|
||||||
See the Channel Layout section in the \fIffmpeg\-utils\fR\|(1) manual
|
|
||||||
for the required syntax.
|
|
||||||
.IP "\fBclev, center_mix_level\fR" 4
|
|
||||||
.IX Item "clev, center_mix_level"
|
|
||||||
Set the center mix level. It is a value expressed in deciBel, and must be
|
|
||||||
in the interval [\-32,32].
|
|
||||||
.IP "\fBslev, surround_mix_level\fR" 4
|
|
||||||
.IX Item "slev, surround_mix_level"
|
|
||||||
Set the surround mix level. It is a value expressed in deciBel, and must
|
|
||||||
be in the interval [\-32,32].
|
|
||||||
.IP "\fBlfe_mix_level\fR" 4
|
|
||||||
.IX Item "lfe_mix_level"
|
|
||||||
Set \s-1LFE\s0 mix into non \s-1LFE\s0 level. It is used when there is a \s-1LFE\s0 input but no
|
|
||||||
\&\s-1LFE\s0 output. It is a value expressed in deciBel, and must
|
|
||||||
be in the interval [\-32,32].
|
|
||||||
.IP "\fBrmvol, rematrix_volume\fR" 4
|
|
||||||
.IX Item "rmvol, rematrix_volume"
|
|
||||||
Set rematrix volume. Default value is 1.0.
|
|
||||||
.IP "\fBrematrix_maxval\fR" 4
|
|
||||||
.IX Item "rematrix_maxval"
|
|
||||||
Set maximum output value for rematrixing.
|
|
||||||
This can be used to prevent clipping vs. preventing volumn reduction
|
|
||||||
A value of 1.0 prevents cliping.
|
|
||||||
.IP "\fBflags, swr_flags\fR" 4
|
|
||||||
.IX Item "flags, swr_flags"
|
|
||||||
Set flags used by the converter. Default value is 0.
|
|
||||||
.Sp
|
|
||||||
It supports the following individual flags:
|
|
||||||
.RS 4
|
|
||||||
.IP "\fBres\fR" 4
|
|
||||||
.IX Item "res"
|
|
||||||
force resampling, this flag forces resampling to be used even when the
|
|
||||||
input and output sample rates match.
|
|
||||||
.RE
|
|
||||||
.RS 4
|
|
||||||
.RE
|
|
||||||
.IP "\fBdither_scale\fR" 4
|
|
||||||
.IX Item "dither_scale"
|
|
||||||
Set the dither scale. Default value is 1.
|
|
||||||
.IP "\fBdither_method\fR" 4
|
|
||||||
.IX Item "dither_method"
|
|
||||||
Set dither method. Default value is 0.
|
|
||||||
.Sp
|
|
||||||
Supported values:
|
|
||||||
.RS 4
|
|
||||||
.IP "\fBrectangular\fR" 4
|
|
||||||
.IX Item "rectangular"
|
|
||||||
select rectangular dither
|
|
||||||
.IP "\fBtriangular\fR" 4
|
|
||||||
.IX Item "triangular"
|
|
||||||
select triangular dither
|
|
||||||
.IP "\fBtriangular_hp\fR" 4
|
|
||||||
.IX Item "triangular_hp"
|
|
||||||
select triangular dither with high pass
|
|
||||||
.IP "\fBlipshitz\fR" 4
|
|
||||||
.IX Item "lipshitz"
|
|
||||||
select lipshitz noise shaping dither
|
|
||||||
.IP "\fBshibata\fR" 4
|
|
||||||
.IX Item "shibata"
|
|
||||||
select shibata noise shaping dither
|
|
||||||
.IP "\fBlow_shibata\fR" 4
|
|
||||||
.IX Item "low_shibata"
|
|
||||||
select low shibata noise shaping dither
|
|
||||||
.IP "\fBhigh_shibata\fR" 4
|
|
||||||
.IX Item "high_shibata"
|
|
||||||
select high shibata noise shaping dither
|
|
||||||
.IP "\fBf_weighted\fR" 4
|
|
||||||
.IX Item "f_weighted"
|
|
||||||
select f\-weighted noise shaping dither
|
|
||||||
.IP "\fBmodified_e_weighted\fR" 4
|
|
||||||
.IX Item "modified_e_weighted"
|
|
||||||
select modified-e-weighted noise shaping dither
|
|
||||||
.IP "\fBimproved_e_weighted\fR" 4
|
|
||||||
.IX Item "improved_e_weighted"
|
|
||||||
select improved-e-weighted noise shaping dither
|
|
||||||
.RE
|
|
||||||
.RS 4
|
|
||||||
.RE
|
|
||||||
.IP "\fBresampler\fR" 4
|
|
||||||
.IX Item "resampler"
|
|
||||||
Set resampling engine. Default value is swr.
|
|
||||||
.Sp
|
|
||||||
Supported values:
|
|
||||||
.RS 4
|
|
||||||
.IP "\fBswr\fR" 4
|
|
||||||
.IX Item "swr"
|
|
||||||
select the native \s-1SW\s0 Resampler; filter options precision and cheby are not
|
|
||||||
applicable in this case.
|
|
||||||
.IP "\fBsoxr\fR" 4
|
|
||||||
.IX Item "soxr"
|
|
||||||
select the SoX Resampler (where available); compensation, and filter options
|
|
||||||
filter_size, phase_shift, filter_type & kaiser_beta, are not applicable in this
|
|
||||||
case.
|
|
||||||
.RE
|
|
||||||
.RS 4
|
|
||||||
.RE
|
|
||||||
.IP "\fBfilter_size\fR" 4
|
|
||||||
.IX Item "filter_size"
|
|
||||||
For swr only, set resampling filter size, default value is 32.
|
|
||||||
.IP "\fBphase_shift\fR" 4
|
|
||||||
.IX Item "phase_shift"
|
|
||||||
For swr only, set resampling phase shift, default value is 10, and must be in
|
|
||||||
the interval [0,30].
|
|
||||||
.IP "\fBlinear_interp\fR" 4
|
|
||||||
.IX Item "linear_interp"
|
|
||||||
Use Linear Interpolation if set to 1, default value is 0.
|
|
||||||
.IP "\fBcutoff\fR" 4
|
|
||||||
.IX Item "cutoff"
|
|
||||||
Set cutoff frequency (swr: 6dB point; soxr: 0dB point) ratio; must be a float
|
|
||||||
value between 0 and 1. Default value is 0.97 with swr, and 0.91 with soxr
|
|
||||||
(which, with a sample-rate of 44100, preserves the entire audio band to 20kHz).
|
|
||||||
.IP "\fBprecision\fR" 4
|
|
||||||
.IX Item "precision"
|
|
||||||
For soxr only, the precision in bits to which the resampled signal will be
|
|
||||||
calculated. The default value of 20 (which, with suitable dithering, is
|
|
||||||
appropriate for a destination bit-depth of 16) gives SoX's 'High Quality'; a
|
|
||||||
value of 28 gives SoX's 'Very High Quality'.
|
|
||||||
.IP "\fBcheby\fR" 4
|
|
||||||
.IX Item "cheby"
|
|
||||||
For soxr only, selects passband rolloff none (Chebyshev) & higher-precision
|
|
||||||
approximation for 'irrational' ratios. Default value is 0.
|
|
||||||
.IP "\fBasync\fR" 4
|
|
||||||
.IX Item "async"
|
|
||||||
For swr only, simple 1 parameter audio sync to timestamps using stretching,
|
|
||||||
squeezing, filling and trimming. Setting this to 1 will enable filling and
|
|
||||||
trimming, larger values represent the maximum amount in samples that the data
|
|
||||||
may be stretched or squeezed for each second.
|
|
||||||
Default value is 0, thus no compensation is applied to make the samples match
|
|
||||||
the audio timestamps.
|
|
||||||
.IP "\fBfirst_pts\fR" 4
|
|
||||||
.IX Item "first_pts"
|
|
||||||
For swr only, assume the first pts should be this value. The time unit is 1 / sample rate.
|
|
||||||
This allows for padding/trimming at the start of stream. By default, no
|
|
||||||
assumption is made about the first frame's expected pts, so no padding or
|
|
||||||
trimming is done. For example, this could be set to 0 to pad the beginning with
|
|
||||||
silence if an audio stream starts after the video stream or to trim any samples
|
|
||||||
with a negative pts due to encoder delay.
|
|
||||||
.IP "\fBmin_comp\fR" 4
|
|
||||||
.IX Item "min_comp"
|
|
||||||
For swr only, set the minimum difference between timestamps and audio data (in
|
|
||||||
seconds) to trigger stretching/squeezing/filling or trimming of the
|
|
||||||
data to make it match the timestamps. The default is that
|
|
||||||
stretching/squeezing/filling and trimming is disabled
|
|
||||||
(\fBmin_comp\fR = \f(CW\*(C`FLT_MAX\*(C'\fR).
|
|
||||||
.IP "\fBmin_hard_comp\fR" 4
|
|
||||||
.IX Item "min_hard_comp"
|
|
||||||
For swr only, set the minimum difference between timestamps and audio data (in
|
|
||||||
seconds) to trigger adding/dropping samples to make it match the
|
|
||||||
timestamps. This option effectively is a threshold to select between
|
|
||||||
hard (trim/fill) and soft (squeeze/stretch) compensation. Note that
|
|
||||||
all compensation is by default disabled through \fBmin_comp\fR.
|
|
||||||
The default is 0.1.
|
|
||||||
.IP "\fBcomp_duration\fR" 4
|
|
||||||
.IX Item "comp_duration"
|
|
||||||
For swr only, set duration (in seconds) over which data is stretched/squeezed
|
|
||||||
to make it match the timestamps. Must be a non-negative double float value,
|
|
||||||
default value is 1.0.
|
|
||||||
.IP "\fBmax_soft_comp\fR" 4
|
|
||||||
.IX Item "max_soft_comp"
|
|
||||||
For swr only, set maximum factor by which data is stretched/squeezed to make it
|
|
||||||
match the timestamps. Must be a non-negative double float value, default value
|
|
||||||
is 0.
|
|
||||||
.IP "\fBmatrix_encoding\fR" 4
|
|
||||||
.IX Item "matrix_encoding"
|
|
||||||
Select matrixed stereo encoding.
|
|
||||||
.Sp
|
|
||||||
It accepts the following values:
|
|
||||||
.RS 4
|
|
||||||
.IP "\fBnone\fR" 4
|
|
||||||
.IX Item "none"
|
|
||||||
select none
|
|
||||||
.IP "\fBdolby\fR" 4
|
|
||||||
.IX Item "dolby"
|
|
||||||
select Dolby
|
|
||||||
.IP "\fBdplii\fR" 4
|
|
||||||
.IX Item "dplii"
|
|
||||||
select Dolby Pro Logic \s-1II\s0
|
|
||||||
.RE
|
|
||||||
.RS 4
|
|
||||||
.Sp
|
|
||||||
Default value is \f(CW\*(C`none\*(C'\fR.
|
|
||||||
.RE
|
|
||||||
.IP "\fBfilter_type\fR" 4
|
|
||||||
.IX Item "filter_type"
|
|
||||||
For swr only, select resampling filter type. This only affects resampling
|
|
||||||
operations.
|
|
||||||
.Sp
|
|
||||||
It accepts the following values:
|
|
||||||
.RS 4
|
|
||||||
.IP "\fBcubic\fR" 4
|
|
||||||
.IX Item "cubic"
|
|
||||||
select cubic
|
|
||||||
.IP "\fBblackman_nuttall\fR" 4
|
|
||||||
.IX Item "blackman_nuttall"
|
|
||||||
select Blackman Nuttall Windowed Sinc
|
|
||||||
.IP "\fBkaiser\fR" 4
|
|
||||||
.IX Item "kaiser"
|
|
||||||
select Kaiser Windowed Sinc
|
|
||||||
.RE
|
|
||||||
.RS 4
|
|
||||||
.RE
|
|
||||||
.IP "\fBkaiser_beta\fR" 4
|
|
||||||
.IX Item "kaiser_beta"
|
|
||||||
For swr only, set Kaiser Window Beta value. Must be an integer in the
|
|
||||||
interval [2,16], default value is 9.
|
|
||||||
.IP "\fBoutput_sample_bits\fR" 4
|
|
||||||
.IX Item "output_sample_bits"
|
|
||||||
For swr only, set number of used output sample bits for dithering. Must be an integer in the
|
|
||||||
interval [0,64], default value is 0, which means it's not used.
|
|
||||||
.SH "SEE ALSO"
|
|
||||||
.IX Header "SEE ALSO"
|
|
||||||
\&\fIffmpeg\fR\|(1), \fIffplay\fR\|(1), \fIffprobe\fR\|(1), \fIffserver\fR\|(1), \fIlibswresample\fR\|(3)
|
|
||||||
.SH "AUTHORS"
|
|
||||||
.IX Header "AUTHORS"
|
|
||||||
The FFmpeg developers.
|
|
||||||
.PP
|
|
||||||
For details about the authorship, see the Git history of the project
|
|
||||||
(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
|
|
||||||
\&\fBgit log\fR in the FFmpeg source directory, or browsing the
|
|
||||||
online repository at <\fBhttp://source.ffmpeg.org\fR>.
|
|
||||||
.PP
|
|
||||||
Maintainers for the specific components are listed in the file
|
|
||||||
\&\fI\s-1MAINTAINERS\s0\fR in the source code tree.
|
|
||||||
@ -1,268 +0,0 @@
|
|||||||
.\" Automatically generated by Pod::Man v1.37, Pod::Parser v1.32
|
|
||||||
.\"
|
|
||||||
.\" Standard preamble:
|
|
||||||
.\" ========================================================================
|
|
||||||
.de Sh \" Subsection heading
|
|
||||||
.br
|
|
||||||
.if t .Sp
|
|
||||||
.ne 5
|
|
||||||
.PP
|
|
||||||
\fB\\$1\fR
|
|
||||||
.PP
|
|
||||||
..
|
|
||||||
.de Sp \" Vertical space (when we can't use .PP)
|
|
||||||
.if t .sp .5v
|
|
||||||
.if n .sp
|
|
||||||
..
|
|
||||||
.de Vb \" Begin verbatim text
|
|
||||||
.ft CW
|
|
||||||
.nf
|
|
||||||
.ne \\$1
|
|
||||||
..
|
|
||||||
.de Ve \" End verbatim text
|
|
||||||
.ft R
|
|
||||||
.fi
|
|
||||||
..
|
|
||||||
.\" Set up some character translations and predefined strings. \*(-- will
|
|
||||||
.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
|
|
||||||
.\" double quote, and \*(R" will give a right double quote. | will give a
|
|
||||||
.\" real vertical bar. \*(C+ will give a nicer C++. Capital omega is used to
|
|
||||||
.\" do unbreakable dashes and therefore won't be available. \*(C` and \*(C'
|
|
||||||
.\" expand to `' in nroff, nothing in troff, for use with C<>.
|
|
||||||
.tr \(*W-|\(bv\*(Tr
|
|
||||||
.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
|
|
||||||
.ie n \{\
|
|
||||||
. ds -- \(*W-
|
|
||||||
. ds PI pi
|
|
||||||
. if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
|
|
||||||
. if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch
|
|
||||||
. ds L" ""
|
|
||||||
. ds R" ""
|
|
||||||
. ds C` ""
|
|
||||||
. ds C' ""
|
|
||||||
'br\}
|
|
||||||
.el\{\
|
|
||||||
. ds -- \|\(em\|
|
|
||||||
. ds PI \(*p
|
|
||||||
. ds L" ``
|
|
||||||
. ds R" ''
|
|
||||||
'br\}
|
|
||||||
.\"
|
|
||||||
.\" If the F register is turned on, we'll generate index entries on stderr for
|
|
||||||
.\" titles (.TH), headers (.SH), subsections (.Sh), items (.Ip), and index
|
|
||||||
.\" entries marked with X<> in POD. Of course, you'll have to process the
|
|
||||||
.\" output yourself in some meaningful fashion.
|
|
||||||
.if \nF \{\
|
|
||||||
. de IX
|
|
||||||
. tm Index:\\$1\t\\n%\t"\\$2"
|
|
||||||
..
|
|
||||||
. nr % 0
|
|
||||||
. rr F
|
|
||||||
.\}
|
|
||||||
.\"
|
|
||||||
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
|
|
||||||
.\" way too many mistakes in technical documents.
|
|
||||||
.hy 0
|
|
||||||
.if n .na
|
|
||||||
.\"
|
|
||||||
.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
|
|
||||||
.\" Fear. Run. Save yourself. No user-serviceable parts.
|
|
||||||
. \" fudge factors for nroff and troff
|
|
||||||
.if n \{\
|
|
||||||
. ds #H 0
|
|
||||||
. ds #V .8m
|
|
||||||
. ds #F .3m
|
|
||||||
. ds #[ \f1
|
|
||||||
. ds #] \fP
|
|
||||||
.\}
|
|
||||||
.if t \{\
|
|
||||||
. ds #H ((1u-(\\\\n(.fu%2u))*.13m)
|
|
||||||
. ds #V .6m
|
|
||||||
. ds #F 0
|
|
||||||
. ds #[ \&
|
|
||||||
. ds #] \&
|
|
||||||
.\}
|
|
||||||
. \" simple accents for nroff and troff
|
|
||||||
.if n \{\
|
|
||||||
. ds ' \&
|
|
||||||
. ds ` \&
|
|
||||||
. ds ^ \&
|
|
||||||
. ds , \&
|
|
||||||
. ds ~ ~
|
|
||||||
. ds /
|
|
||||||
.\}
|
|
||||||
.if t \{\
|
|
||||||
. ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u"
|
|
||||||
. ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u'
|
|
||||||
. ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
|
|
||||||
. ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u'
|
|
||||||
. ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u'
|
|
||||||
. ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
|
|
||||||
.\}
|
|
||||||
. \" troff and (daisy-wheel) nroff accents
|
|
||||||
.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
|
|
||||||
.ds 8 \h'\*(#H'\(*b\h'-\*(#H'
|
|
||||||
.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#]
|
|
||||||
.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
|
|
||||||
.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
|
|
||||||
.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
|
|
||||||
.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#]
|
|
||||||
.ds ae a\h'-(\w'a'u*4/10)'e
|
|
||||||
.ds Ae A\h'-(\w'A'u*4/10)'E
|
|
||||||
. \" corrections for vroff
|
|
||||||
.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
|
|
||||||
.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
|
|
||||||
. \" for low resolution devices (crt and lpr)
|
|
||||||
.if \n(.H>23 .if \n(.V>19 \
|
|
||||||
\{\
|
|
||||||
. ds : e
|
|
||||||
. ds 8 ss
|
|
||||||
. ds o a
|
|
||||||
. ds d- d\h'-1'\(ga
|
|
||||||
. ds D- D\h'-1'\(hy
|
|
||||||
. ds th \o'bp'
|
|
||||||
. ds Th \o'LP'
|
|
||||||
. ds ae ae
|
|
||||||
. ds Ae AE
|
|
||||||
.\}
|
|
||||||
.rm #[ #] #H #V #F C
|
|
||||||
.\" ========================================================================
|
|
||||||
.\"
|
|
||||||
.IX Title "FFMPEG-SCALER 1"
|
|
||||||
.TH FFMPEG-SCALER 1 "2013-12-14" " " " "
|
|
||||||
.SH "NAME"
|
|
||||||
ffmpeg\-scaler \- FFmpeg video scaling and pixel format converter
|
|
||||||
.SH "DESCRIPTION"
|
|
||||||
.IX Header "DESCRIPTION"
|
|
||||||
The FFmpeg rescaler provides a high-level interface to the libswscale
|
|
||||||
library image conversion utilities. In particular it allows to perform
|
|
||||||
image rescaling and pixel format conversion.
|
|
||||||
.SH "SCALER OPTIONS"
|
|
||||||
.IX Header "SCALER OPTIONS"
|
|
||||||
The video scaler supports the following named options.
|
|
||||||
.PP
|
|
||||||
Options may be set by specifying \-\fIoption\fR \fIvalue\fR in the
|
|
||||||
FFmpeg tools. For programmatic use, they can be set explicitly in the
|
|
||||||
\&\f(CW\*(C`SwsContext\*(C'\fR options or through the \fIlibavutil/opt.h\fR \s-1API\s0.
|
|
||||||
.IP "\fBsws_flags\fR" 4
|
|
||||||
.IX Item "sws_flags"
|
|
||||||
Set the scaler flags. This is also used to set the scaling
|
|
||||||
algorithm. Only a single algorithm should be selected.
|
|
||||||
.Sp
|
|
||||||
It accepts the following values:
|
|
||||||
.RS 4
|
|
||||||
.IP "\fBfast_bilinear\fR" 4
|
|
||||||
.IX Item "fast_bilinear"
|
|
||||||
Select fast bilinear scaling algorithm.
|
|
||||||
.IP "\fBbilinear\fR" 4
|
|
||||||
.IX Item "bilinear"
|
|
||||||
Select bilinear scaling algorithm.
|
|
||||||
.IP "\fBbicubic\fR" 4
|
|
||||||
.IX Item "bicubic"
|
|
||||||
Select bicubic scaling algorithm.
|
|
||||||
.IP "\fBexperimental\fR" 4
|
|
||||||
.IX Item "experimental"
|
|
||||||
Select experimental scaling algorithm.
|
|
||||||
.IP "\fBneighbor\fR" 4
|
|
||||||
.IX Item "neighbor"
|
|
||||||
Select nearest neighbor rescaling algorithm.
|
|
||||||
.IP "\fBarea\fR" 4
|
|
||||||
.IX Item "area"
|
|
||||||
Select averaging area rescaling algorithm.
|
|
||||||
.IP "\fBbicubiclin\fR" 4
|
|
||||||
.IX Item "bicubiclin"
|
|
||||||
Select bicubic scaling algorithm for the luma component, bilinear for
|
|
||||||
chroma components.
|
|
||||||
.IP "\fBgauss\fR" 4
|
|
||||||
.IX Item "gauss"
|
|
||||||
Select Gaussian rescaling algorithm.
|
|
||||||
.IP "\fBsinc\fR" 4
|
|
||||||
.IX Item "sinc"
|
|
||||||
Select sinc rescaling algorithm.
|
|
||||||
.IP "\fBlanczos\fR" 4
|
|
||||||
.IX Item "lanczos"
|
|
||||||
Select lanczos rescaling algorithm.
|
|
||||||
.IP "\fBspline\fR" 4
|
|
||||||
.IX Item "spline"
|
|
||||||
Select natural bicubic spline rescaling algorithm.
|
|
||||||
.IP "\fBprint_info\fR" 4
|
|
||||||
.IX Item "print_info"
|
|
||||||
Enable printing/debug logging.
|
|
||||||
.IP "\fBaccurate_rnd\fR" 4
|
|
||||||
.IX Item "accurate_rnd"
|
|
||||||
Enable accurate rounding.
|
|
||||||
.IP "\fBfull_chroma_int\fR" 4
|
|
||||||
.IX Item "full_chroma_int"
|
|
||||||
Enable full chroma interpolation.
|
|
||||||
.IP "\fBfull_chroma_inp\fR" 4
|
|
||||||
.IX Item "full_chroma_inp"
|
|
||||||
Select full chroma input.
|
|
||||||
.IP "\fBbitexact\fR" 4
|
|
||||||
.IX Item "bitexact"
|
|
||||||
Enable bitexact output.
|
|
||||||
.RE
|
|
||||||
.RS 4
|
|
||||||
.RE
|
|
||||||
.IP "\fBsrcw\fR" 4
|
|
||||||
.IX Item "srcw"
|
|
||||||
Set source width.
|
|
||||||
.IP "\fBsrch\fR" 4
|
|
||||||
.IX Item "srch"
|
|
||||||
Set source height.
|
|
||||||
.IP "\fBdstw\fR" 4
|
|
||||||
.IX Item "dstw"
|
|
||||||
Set destination width.
|
|
||||||
.IP "\fBdsth\fR" 4
|
|
||||||
.IX Item "dsth"
|
|
||||||
Set destination height.
|
|
||||||
.IP "\fBsrc_format\fR" 4
|
|
||||||
.IX Item "src_format"
|
|
||||||
Set source pixel format (must be expressed as an integer).
|
|
||||||
.IP "\fBdst_format\fR" 4
|
|
||||||
.IX Item "dst_format"
|
|
||||||
Set destination pixel format (must be expressed as an integer).
|
|
||||||
.IP "\fBsrc_range\fR" 4
|
|
||||||
.IX Item "src_range"
|
|
||||||
Select source range.
|
|
||||||
.IP "\fBdst_range\fR" 4
|
|
||||||
.IX Item "dst_range"
|
|
||||||
Select destination range.
|
|
||||||
.IP "\fBparam0, param1\fR" 4
|
|
||||||
.IX Item "param0, param1"
|
|
||||||
Set scaling algorithm parameters. The specified values are specific of
|
|
||||||
some scaling algorithms and ignored by others. The specified values
|
|
||||||
are floating point number values.
|
|
||||||
.IP "\fBsws_dither\fR" 4
|
|
||||||
.IX Item "sws_dither"
|
|
||||||
Set the dithering algorithm. Accepts one of the following
|
|
||||||
values. Default value is \fBauto\fR.
|
|
||||||
.RS 4
|
|
||||||
.IP "\fBauto\fR" 4
|
|
||||||
.IX Item "auto"
|
|
||||||
automatic choice
|
|
||||||
.IP "\fBnone\fR" 4
|
|
||||||
.IX Item "none"
|
|
||||||
no dithering
|
|
||||||
.IP "\fBbayer\fR" 4
|
|
||||||
.IX Item "bayer"
|
|
||||||
bayer dither
|
|
||||||
.IP "\fBed\fR" 4
|
|
||||||
.IX Item "ed"
|
|
||||||
error diffusion dither
|
|
||||||
.RE
|
|
||||||
.RS 4
|
|
||||||
.RE
|
|
||||||
.SH "SEE ALSO"
|
|
||||||
.IX Header "SEE ALSO"
|
|
||||||
\&\fIffmpeg\fR\|(1), \fIffplay\fR\|(1), \fIffprobe\fR\|(1), \fIffserver\fR\|(1), \fIlibswscale\fR\|(3)
|
|
||||||
.SH "AUTHORS"
|
|
||||||
.IX Header "AUTHORS"
|
|
||||||
The FFmpeg developers.
|
|
||||||
.PP
|
|
||||||
For details about the authorship, see the Git history of the project
|
|
||||||
(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
|
|
||||||
\&\fBgit log\fR in the FFmpeg source directory, or browsing the
|
|
||||||
online repository at <\fBhttp://source.ffmpeg.org\fR>.
|
|
||||||
.PP
|
|
||||||
Maintainers for the specific components are listed in the file
|
|
||||||
\&\fI\s-1MAINTAINERS\s0\fR in the source code tree.
|
|
||||||
File diff suppressed because it is too large
Load Diff
@ -1,159 +0,0 @@
|
|||||||
.\" Automatically generated by Pod::Man v1.37, Pod::Parser v1.32
|
|
||||||
.\"
|
|
||||||
.\" Standard preamble:
|
|
||||||
.\" ========================================================================
|
|
||||||
.de Sh \" Subsection heading
|
|
||||||
.br
|
|
||||||
.if t .Sp
|
|
||||||
.ne 5
|
|
||||||
.PP
|
|
||||||
\fB\\$1\fR
|
|
||||||
.PP
|
|
||||||
..
|
|
||||||
.de Sp \" Vertical space (when we can't use .PP)
|
|
||||||
.if t .sp .5v
|
|
||||||
.if n .sp
|
|
||||||
..
|
|
||||||
.de Vb \" Begin verbatim text
|
|
||||||
.ft CW
|
|
||||||
.nf
|
|
||||||
.ne \\$1
|
|
||||||
..
|
|
||||||
.de Ve \" End verbatim text
|
|
||||||
.ft R
|
|
||||||
.fi
|
|
||||||
..
|
|
||||||
.\" Set up some character translations and predefined strings. \*(-- will
|
|
||||||
.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
|
|
||||||
.\" double quote, and \*(R" will give a right double quote. | will give a
|
|
||||||
.\" real vertical bar. \*(C+ will give a nicer C++. Capital omega is used to
|
|
||||||
.\" do unbreakable dashes and therefore won't be available. \*(C` and \*(C'
|
|
||||||
.\" expand to `' in nroff, nothing in troff, for use with C<>.
|
|
||||||
.tr \(*W-|\(bv\*(Tr
|
|
||||||
.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
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'br\}
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'br\}
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.\"
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.\" titles (.TH), headers (.SH), subsections (.Sh), items (.Ip), and index
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.\" output yourself in some meaningful fashion.
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.if \nF \{\
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. de IX
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. tm Index:\\$1\t\\n%\t"\\$2"
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.\}
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.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
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. \" fudge factors for nroff and troff
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. ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
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. ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u'
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. ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u'
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. ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
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.\}
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. \" troff and (daisy-wheel) nroff accents
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.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
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.ds 8 \h'\*(#H'\(*b\h'-\*(#H'
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.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#]
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|
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.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
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.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
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.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
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.\}
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||||||
.rm #[ #] #H #V #F C
|
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||||||
.\" ========================================================================
|
|
||||||
.\"
|
|
||||||
.IX Title "doc::libavcodec 3"
|
|
||||||
.TH doc::libavcodec 3 "2013-12-14" " " " "
|
|
||||||
.SH "NAME"
|
|
||||||
libavcodec \- media streams decoding and encoding library
|
|
||||||
.SH "DESCRIPTION"
|
|
||||||
.IX Header "DESCRIPTION"
|
|
||||||
The libavcodec library provides a generic encoding/decoding framework
|
|
||||||
and contains multiple decoders and encoders for audio, video and
|
|
||||||
subtitle streams, and several bitstream filters.
|
|
||||||
.PP
|
|
||||||
The shared architecture provides various services ranging from bit
|
|
||||||
stream I/O to \s-1DSP\s0 optimizations, and makes it suitable for
|
|
||||||
implementing robust and fast codecs as well as for experimentation.
|
|
||||||
.SH "SEE ALSO"
|
|
||||||
.IX Header "SEE ALSO"
|
|
||||||
\&\fIffmpeg\fR\|(1), \fIffplay\fR\|(1), \fIffprobe\fR\|(1), \fIffserver\fR\|(1),
|
|
||||||
\&\fIffmpeg\-codecs\fR\|(1), \fIffmpeg\-bitstream\-filters\fR\|(1),
|
|
||||||
\&\fIlibavutil\fR\|(3)
|
|
||||||
.SH "AUTHORS"
|
|
||||||
.IX Header "AUTHORS"
|
|
||||||
The FFmpeg developers.
|
|
||||||
.PP
|
|
||||||
For details about the authorship, see the Git history of the project
|
|
||||||
(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
|
|
||||||
\&\fBgit log\fR in the FFmpeg source directory, or browsing the
|
|
||||||
online repository at <\fBhttp://source.ffmpeg.org\fR>.
|
|
||||||
.PP
|
|
||||||
Maintainers for the specific components are listed in the file
|
|
||||||
\&\fI\s-1MAINTAINERS\s0\fR in the source code tree.
|
|
||||||
@ -1,156 +0,0 @@
|
|||||||
.\" Automatically generated by Pod::Man v1.37, Pod::Parser v1.32
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.\"
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.\" ========================================================================
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.if t .Sp
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.if t .sp .5v
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|
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.fi
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..
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.\" Set up some character translations and predefined strings. \*(-- will
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.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
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.\" double quote, and \*(R" will give a right double quote. | will give a
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.\" real vertical bar. \*(C+ will give a nicer C++. Capital omega is used to
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|
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.\" expand to `' in nroff, nothing in troff, for use with C<>.
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.tr \(*W-|\(bv\*(Tr
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.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
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. ds L" ""
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'br\}
|
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.\"
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|
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.\" If the F register is turned on, we'll generate index entries on stderr for
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|
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.\" titles (.TH), headers (.SH), subsections (.Sh), items (.Ip), and index
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.\" entries marked with X<> in POD. Of course, you'll have to process the
|
|
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.\" output yourself in some meaningful fashion.
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|
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.if \nF \{\
|
|
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. de IX
|
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. tm Index:\\$1\t\\n%\t"\\$2"
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. nr % 0
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. rr F
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.\}
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.\"
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.\" For nroff, turn off justification. Always turn off hyphenation; it makes
|
|
||||||
.\" way too many mistakes in technical documents.
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|
||||||
.hy 0
|
|
||||||
.if n .na
|
|
||||||
.\"
|
|
||||||
.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
|
|
||||||
.\" Fear. Run. Save yourself. No user-serviceable parts.
|
|
||||||
. \" fudge factors for nroff and troff
|
|
||||||
.if n \{\
|
|
||||||
. ds #H 0
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. ds #F .3m
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. ds #] \fP
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.\}
|
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.if t \{\
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. ds #H ((1u-(\\\\n(.fu%2u))*.13m)
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.\}
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|
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.if n \{\
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|
||||||
. ds ^ \&
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|
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|
||||||
. ds ~ ~
|
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||||||
. ds /
|
|
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.\}
|
|
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.if t \{\
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. ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u"
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. ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u'
|
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. ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
|
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. ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u'
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. ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u'
|
|
||||||
. ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
|
|
||||||
.\}
|
|
||||||
. \" troff and (daisy-wheel) nroff accents
|
|
||||||
.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
|
|
||||||
.ds 8 \h'\*(#H'\(*b\h'-\*(#H'
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|
||||||
.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#]
|
|
||||||
.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
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|
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.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
|
|
||||||
.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
|
|
||||||
.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#]
|
|
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.ds Ae A\h'-(\w'A'u*4/10)'E
|
|
||||||
. \" corrections for vroff
|
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.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
|
|
||||||
.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
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. \" for low resolution devices (crt and lpr)
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\{\
|
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. ds : e
|
|
||||||
. ds 8 ss
|
|
||||||
. ds o a
|
|
||||||
. ds d- d\h'-1'\(ga
|
|
||||||
. ds D- D\h'-1'\(hy
|
|
||||||
. ds th \o'bp'
|
|
||||||
. ds Th \o'LP'
|
|
||||||
. ds ae ae
|
|
||||||
. ds Ae AE
|
|
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.\}
|
|
||||||
.rm #[ #] #H #V #F C
|
|
||||||
.\" ========================================================================
|
|
||||||
.\"
|
|
||||||
.IX Title "doc::libavdevice 3"
|
|
||||||
.TH doc::libavdevice 3 "2013-12-14" " " " "
|
|
||||||
.SH "NAME"
|
|
||||||
libavdevice \- multimedia device handling library
|
|
||||||
.SH "DESCRIPTION"
|
|
||||||
.IX Header "DESCRIPTION"
|
|
||||||
The libavdevice library provides a generic framework for grabbing from
|
|
||||||
and rendering to many common multimedia input/output devices, and
|
|
||||||
supports several input and output devices, including Video4Linux2,
|
|
||||||
VfW, DShow, and \s-1ALSA\s0.
|
|
||||||
.SH "SEE ALSO"
|
|
||||||
.IX Header "SEE ALSO"
|
|
||||||
\&\fIffmpeg\fR\|(1), \fIffplay\fR\|(1), \fIffprobe\fR\|(1), \fIffserver\fR\|(1),
|
|
||||||
\&\fIffmpeg\-devices\fR\|(1),
|
|
||||||
\&\fIlibavutil\fR\|(3), \fIlibavcodec\fR\|(3), \fIlibavformat\fR\|(3)
|
|
||||||
.SH "AUTHORS"
|
|
||||||
.IX Header "AUTHORS"
|
|
||||||
The FFmpeg developers.
|
|
||||||
.PP
|
|
||||||
For details about the authorship, see the Git history of the project
|
|
||||||
(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
|
|
||||||
\&\fBgit log\fR in the FFmpeg source directory, or browsing the
|
|
||||||
online repository at <\fBhttp://source.ffmpeg.org\fR>.
|
|
||||||
.PP
|
|
||||||
Maintainers for the specific components are listed in the file
|
|
||||||
\&\fI\s-1MAINTAINERS\s0\fR in the source code tree.
|
|
||||||
@ -1,159 +0,0 @@
|
|||||||
.\" Automatically generated by Pod::Man v1.37, Pod::Parser v1.32
|
|
||||||
.\"
|
|
||||||
.\" Standard preamble:
|
|
||||||
.\" ========================================================================
|
|
||||||
.de Sh \" Subsection heading
|
|
||||||
.br
|
|
||||||
.if t .Sp
|
|
||||||
.ne 5
|
|
||||||
.PP
|
|
||||||
\fB\\$1\fR
|
|
||||||
.PP
|
|
||||||
..
|
|
||||||
.de Sp \" Vertical space (when we can't use .PP)
|
|
||||||
.if t .sp .5v
|
|
||||||
.if n .sp
|
|
||||||
..
|
|
||||||
.de Vb \" Begin verbatim text
|
|
||||||
.ft CW
|
|
||||||
.nf
|
|
||||||
.ne \\$1
|
|
||||||
..
|
|
||||||
.de Ve \" End verbatim text
|
|
||||||
.ft R
|
|
||||||
.fi
|
|
||||||
..
|
|
||||||
.\" Set up some character translations and predefined strings. \*(-- will
|
|
||||||
.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
|
|
||||||
.\" double quote, and \*(R" will give a right double quote. | will give a
|
|
||||||
.\" real vertical bar. \*(C+ will give a nicer C++. Capital omega is used to
|
|
||||||
.\" do unbreakable dashes and therefore won't be available. \*(C` and \*(C'
|
|
||||||
.\" expand to `' in nroff, nothing in troff, for use with C<>.
|
|
||||||
.tr \(*W-|\(bv\*(Tr
|
|
||||||
.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
|
|
||||||
.ie n \{\
|
|
||||||
. ds -- \(*W-
|
|
||||||
. ds PI pi
|
|
||||||
. if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
|
|
||||||
. if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch
|
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'br\}
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.\"
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.\" titles (.TH), headers (.SH), subsections (.Sh), items (.Ip), and index
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. \" fudge factors for nroff and troff
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.if n \{\
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. ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
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.\}
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.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
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.rm #[ #] #H #V #F C
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||||||
.\" ========================================================================
|
|
||||||
.\"
|
|
||||||
.IX Title "doc::libavformat 3"
|
|
||||||
.TH doc::libavformat 3 "2013-12-14" " " " "
|
|
||||||
.SH "NAME"
|
|
||||||
libavformat \- multimedia muxing and demuxing library
|
|
||||||
.SH "DESCRIPTION"
|
|
||||||
.IX Header "DESCRIPTION"
|
|
||||||
The libavformat library provides a generic framework for multiplexing
|
|
||||||
and demultiplexing (muxing and demuxing) audio, video and subtitle
|
|
||||||
streams. It encompasses multiple muxers and demuxers for multimedia
|
|
||||||
container formats.
|
|
||||||
.PP
|
|
||||||
It also supports several input and output protocols to access a media
|
|
||||||
resource.
|
|
||||||
.SH "SEE ALSO"
|
|
||||||
.IX Header "SEE ALSO"
|
|
||||||
\&\fIffmpeg\fR\|(1), \fIffplay\fR\|(1), \fIffprobe\fR\|(1), \fIffserver\fR\|(1),
|
|
||||||
\&\fIffmpeg\-formats\fR\|(1), \fIffmpeg\-protocols\fR\|(1),
|
|
||||||
\&\fIlibavutil\fR\|(3), \fIlibavcodec\fR\|(3)
|
|
||||||
.SH "AUTHORS"
|
|
||||||
.IX Header "AUTHORS"
|
|
||||||
The FFmpeg developers.
|
|
||||||
.PP
|
|
||||||
For details about the authorship, see the Git history of the project
|
|
||||||
(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
|
|
||||||
\&\fBgit log\fR in the FFmpeg source directory, or browsing the
|
|
||||||
online repository at <\fBhttp://source.ffmpeg.org\fR>.
|
|
||||||
.PP
|
|
||||||
Maintainers for the specific components are listed in the file
|
|
||||||
\&\fI\s-1MAINTAINERS\s0\fR in the source code tree.
|
|
||||||
@ -1,156 +0,0 @@
|
|||||||
.\" Automatically generated by Pod::Man v1.37, Pod::Parser v1.32
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.tr \(*W-|\(bv\*(Tr
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.\"
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.\" If the F register is turned on, we'll generate index entries on stderr for
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.\" titles (.TH), headers (.SH), subsections (.Sh), items (.Ip), and index
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.\" entries marked with X<> in POD. Of course, you'll have to process the
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.\" output yourself in some meaningful fashion.
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.if \nF \{\
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. de IX
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.\}
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.\"
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.\" For nroff, turn off justification. Always turn off hyphenation; it makes
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.\" way too many mistakes in technical documents.
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|
||||||
.hy 0
|
|
||||||
.if n .na
|
|
||||||
.\"
|
|
||||||
.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
|
|
||||||
.\" Fear. Run. Save yourself. No user-serviceable parts.
|
|
||||||
. \" fudge factors for nroff and troff
|
|
||||||
.if n \{\
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|
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.if t \{\
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|
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|
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|
|
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.\}
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.if t \{\
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. ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u"
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. ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
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. ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u'
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. ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u'
|
|
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. ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
|
|
||||||
.\}
|
|
||||||
. \" troff and (daisy-wheel) nroff accents
|
|
||||||
.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
|
|
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.ds 8 \h'\*(#H'\(*b\h'-\*(#H'
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|
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.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#]
|
|
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.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
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.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
|
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.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
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.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#]
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. \" corrections for vroff
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. \" for low resolution devices (crt and lpr)
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.if \n(.H>23 .if \n(.V>19 \
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\{\
|
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. ds : e
|
|
||||||
. ds 8 ss
|
|
||||||
. ds o a
|
|
||||||
. ds d- d\h'-1'\(ga
|
|
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. ds D- D\h'-1'\(hy
|
|
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. ds th \o'bp'
|
|
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. ds Th \o'LP'
|
|
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. ds ae ae
|
|
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|
|
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.\}
|
|
||||||
.rm #[ #] #H #V #F C
|
|
||||||
.\" ========================================================================
|
|
||||||
.\"
|
|
||||||
.IX Title "doc::libavutil 3"
|
|
||||||
.TH doc::libavutil 3 "2013-12-14" " " " "
|
|
||||||
.SH "NAME"
|
|
||||||
libavutil \- multimedia\-biased utility library
|
|
||||||
.SH "DESCRIPTION"
|
|
||||||
.IX Header "DESCRIPTION"
|
|
||||||
The libavutil library is a utility library to aid portable
|
|
||||||
multimedia programming. It contains safe portable string functions,
|
|
||||||
random number generators, data structures, additional mathematics
|
|
||||||
functions, cryptography and multimedia related functionality (like
|
|
||||||
enumerations for pixel and sample formats).
|
|
||||||
.SH "SEE ALSO"
|
|
||||||
.IX Header "SEE ALSO"
|
|
||||||
\&\fIffmpeg\fR\|(1), \fIffplay\fR\|(1), \fIffprobe\fR\|(1), \fIffserver\fR\|(1),
|
|
||||||
\&\fIffmpeg\-utils\fR\|(1)
|
|
||||||
.SH "AUTHORS"
|
|
||||||
.IX Header "AUTHORS"
|
|
||||||
The FFmpeg developers.
|
|
||||||
.PP
|
|
||||||
For details about the authorship, see the Git history of the project
|
|
||||||
(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
|
|
||||||
\&\fBgit log\fR in the FFmpeg source directory, or browsing the
|
|
||||||
online repository at <\fBhttp://source.ffmpeg.org\fR>.
|
|
||||||
.PP
|
|
||||||
Maintainers for the specific components are listed in the file
|
|
||||||
\&\fI\s-1MAINTAINERS\s0\fR in the source code tree.
|
|
||||||
@ -1,176 +0,0 @@
|
|||||||
.\" Automatically generated by Pod::Man v1.37, Pod::Parser v1.32
|
|
||||||
.\"
|
|
||||||
.\" Standard preamble:
|
|
||||||
.\" ========================================================================
|
|
||||||
.de Sh \" Subsection heading
|
|
||||||
.br
|
|
||||||
.if t .Sp
|
|
||||||
.ne 5
|
|
||||||
.PP
|
|
||||||
\fB\\$1\fR
|
|
||||||
.PP
|
|
||||||
..
|
|
||||||
.de Sp \" Vertical space (when we can't use .PP)
|
|
||||||
.if t .sp .5v
|
|
||||||
.if n .sp
|
|
||||||
..
|
|
||||||
.de Vb \" Begin verbatim text
|
|
||||||
.ft CW
|
|
||||||
.nf
|
|
||||||
.ne \\$1
|
|
||||||
..
|
|
||||||
.de Ve \" End verbatim text
|
|
||||||
.ft R
|
|
||||||
.fi
|
|
||||||
..
|
|
||||||
.\" Set up some character translations and predefined strings. \*(-- will
|
|
||||||
.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
|
|
||||||
.\" double quote, and \*(R" will give a right double quote. | will give a
|
|
||||||
.\" real vertical bar. \*(C+ will give a nicer C++. Capital omega is used to
|
|
||||||
.\" do unbreakable dashes and therefore won't be available. \*(C` and \*(C'
|
|
||||||
.\" expand to `' in nroff, nothing in troff, for use with C<>.
|
|
||||||
.tr \(*W-|\(bv\*(Tr
|
|
||||||
.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
|
|
||||||
.ie n \{\
|
|
||||||
. ds -- \(*W-
|
|
||||||
. ds PI pi
|
|
||||||
. if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
|
|
||||||
. if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch
|
|
||||||
. ds L" ""
|
|
||||||
. ds R" ""
|
|
||||||
. ds C` ""
|
|
||||||
. ds C' ""
|
|
||||||
'br\}
|
|
||||||
.el\{\
|
|
||||||
. ds -- \|\(em\|
|
|
||||||
. ds PI \(*p
|
|
||||||
. ds L" ``
|
|
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. ds R" ''
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'br\}
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.\"
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.\" If the F register is turned on, we'll generate index entries on stderr for
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.\" titles (.TH), headers (.SH), subsections (.Sh), items (.Ip), and index
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.\" entries marked with X<> in POD. Of course, you'll have to process the
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.\" output yourself in some meaningful fashion.
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||||||
.if \nF \{\
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||||||
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.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
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.\" ========================================================================
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.\"
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.IX Title "doc::libswresample 3"
|
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||||||
.TH doc::libswresample 3 "2013-12-14" " " " "
|
|
||||||
.SH "NAME"
|
|
||||||
libswresample \- audio resampling library
|
|
||||||
.SH "DESCRIPTION"
|
|
||||||
.IX Header "DESCRIPTION"
|
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||||||
The libswresample library performs highly optimized audio resampling,
|
|
||||||
rematrixing and sample format conversion operations.
|
|
||||||
.PP
|
|
||||||
Specifically, this library performs the following conversions:
|
|
||||||
.IP "\(bu" 4
|
|
||||||
\&\fIResampling\fR: is the process of changing the audio rate, for
|
|
||||||
example from a high sample rate of 44100Hz to 8000Hz. Audio
|
|
||||||
conversion from high to low sample rate is a lossy process. Several
|
|
||||||
resampling options and algorithms are available.
|
|
||||||
.IP "\(bu" 4
|
|
||||||
\&\fIFormat conversion\fR: is the process of converting the type of
|
|
||||||
samples, for example from 16\-bit signed samples to unsigned 8\-bit or
|
|
||||||
float samples. It also handles packing conversion, when passing from
|
|
||||||
packed layout (all samples belonging to distinct channels interleaved
|
|
||||||
in the same buffer), to planar layout (all samples belonging to the
|
|
||||||
same channel stored in a dedicated buffer or \*(L"plane\*(R").
|
|
||||||
.IP "\(bu" 4
|
|
||||||
\&\fIRematrixing\fR: is the process of changing the channel layout, for
|
|
||||||
example from stereo to mono. When the input channels cannot be mapped
|
|
||||||
to the output streams, the process is lossy, since it involves
|
|
||||||
different gain factors and mixing.
|
|
||||||
.PP
|
|
||||||
Various other audio conversions (e.g. stretching and padding) are
|
|
||||||
enabled through dedicated options.
|
|
||||||
.SH "SEE ALSO"
|
|
||||||
.IX Header "SEE ALSO"
|
|
||||||
\&\fIffmpeg\fR\|(1), \fIffplay\fR\|(1), \fIffprobe\fR\|(1), \fIffserver\fR\|(1),
|
|
||||||
\&\fIffmpeg\-resampler\fR\|(1),
|
|
||||||
\&\fIlibavutil\fR\|(3)
|
|
||||||
.SH "AUTHORS"
|
|
||||||
.IX Header "AUTHORS"
|
|
||||||
The FFmpeg developers.
|
|
||||||
.PP
|
|
||||||
For details about the authorship, see the Git history of the project
|
|
||||||
(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
|
|
||||||
\&\fBgit log\fR in the FFmpeg source directory, or browsing the
|
|
||||||
online repository at <\fBhttp://source.ffmpeg.org\fR>.
|
|
||||||
.PP
|
|
||||||
Maintainers for the specific components are listed in the file
|
|
||||||
\&\fI\s-1MAINTAINERS\s0\fR in the source code tree.
|
|
||||||
@ -1,170 +0,0 @@
|
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.\" Automatically generated by Pod::Man v1.37, Pod::Parser v1.32
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.\" ========================================================================
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.\" Set up some character translations and predefined strings. \*(-- will
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.\" If the F register is turned on, we'll generate index entries on stderr for
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.\" titles (.TH), headers (.SH), subsections (.Sh), items (.Ip), and index
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||||||
.\" entries marked with X<> in POD. Of course, you'll have to process the
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.\" output yourself in some meaningful fashion.
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.if \nF \{\
|
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. de IX
|
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|
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.\"
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||||||
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
|
|
||||||
.\" way too many mistakes in technical documents.
|
|
||||||
.hy 0
|
|
||||||
.if n .na
|
|
||||||
.\"
|
|
||||||
.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
|
|
||||||
.\" Fear. Run. Save yourself. No user-serviceable parts.
|
|
||||||
. \" fudge factors for nroff and troff
|
|
||||||
.if n \{\
|
|
||||||
. ds #H 0
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|
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|
||||||
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|
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|
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|
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|
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|
||||||
. ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
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|
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.\}
|
|
||||||
. \" troff and (daisy-wheel) nroff accents
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|
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.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
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|
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|
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.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
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. \" corrections for vroff
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.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
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.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
|
|
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. \" for low resolution devices (crt and lpr)
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|
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.if \n(.H>23 .if \n(.V>19 \
|
|
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\{\
|
|
||||||
. ds : e
|
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. ds 8 ss
|
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|
|
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|
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. ds Th \o'LP'
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|
|
||||||
. ds Ae AE
|
|
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.\}
|
|
||||||
.rm #[ #] #H #V #F C
|
|
||||||
.\" ========================================================================
|
|
||||||
.\"
|
|
||||||
.IX Title "doc::libswscale 3"
|
|
||||||
.TH doc::libswscale 3 "2013-12-14" " " " "
|
|
||||||
.SH "NAME"
|
|
||||||
libswscale \- video scaling and pixel format conversion library
|
|
||||||
.SH "DESCRIPTION"
|
|
||||||
.IX Header "DESCRIPTION"
|
|
||||||
The libswscale library performs highly optimized image scaling and
|
|
||||||
colorspace and pixel format conversion operations.
|
|
||||||
.PP
|
|
||||||
Specifically, this library performs the following conversions:
|
|
||||||
.IP "\(bu" 4
|
|
||||||
\&\fIRescaling\fR: is the process of changing the video size. Several
|
|
||||||
rescaling options and algorithms are available. This is usually a
|
|
||||||
lossy process.
|
|
||||||
.IP "\(bu" 4
|
|
||||||
\&\fIPixel format conversion\fR: is the process of converting the image
|
|
||||||
format and colorspace of the image, for example from planar \s-1YUV420P\s0 to
|
|
||||||
\&\s-1RGB24\s0 packed. It also handles packing conversion, that is converts
|
|
||||||
from packed layout (all pixels belonging to distinct planes
|
|
||||||
interleaved in the same buffer), to planar layout (all samples
|
|
||||||
belonging to the same plane stored in a dedicated buffer or \*(L"plane\*(R").
|
|
||||||
.Sp
|
|
||||||
This is usually a lossy process in case the source and destination
|
|
||||||
colorspaces differ.
|
|
||||||
.SH "SEE ALSO"
|
|
||||||
.IX Header "SEE ALSO"
|
|
||||||
\&\fIffmpeg\fR\|(1), \fIffplay\fR\|(1), \fIffprobe\fR\|(1), \fIffserver\fR\|(1),
|
|
||||||
\&\fIffmpeg\-scaler\fR\|(1),
|
|
||||||
\&\fIlibavutil\fR\|(3)
|
|
||||||
.SH "AUTHORS"
|
|
||||||
.IX Header "AUTHORS"
|
|
||||||
The FFmpeg developers.
|
|
||||||
.PP
|
|
||||||
For details about the authorship, see the Git history of the project
|
|
||||||
(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
|
|
||||||
\&\fBgit log\fR in the FFmpeg source directory, or browsing the
|
|
||||||
online repository at <\fBhttp://source.ffmpeg.org\fR>.
|
|
||||||
.PP
|
|
||||||
Maintainers for the specific components are listed in the file
|
|
||||||
\&\fI\s-1MAINTAINERS\s0\fR in the source code tree.
|
|
||||||
Loading…
Reference in New Issue
Block a user