ffmpeg-2.8.5

git-svn-id: svn://kolibrios.org@6147 a494cfbc-eb01-0410-851d-a64ba20cac60

contrib/sdk/sources/ffmpeg/ffmpeg-2.8/doc/libswresample.pod

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+=encoding utf8
+
+=head1 NAME
+
+libswresample - audio resampling library
+
+=head1 DESCRIPTION
+
+
+The libswresample library performs highly optimized audio resampling,
+rematrixing and sample format conversion operations.
+
+Specifically, this library performs the following conversions:
+
+
+=over 4
+
+
+=item *
+
+I<Resampling>: 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.
+
+
+=item *
+
+I<Format conversion>: 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 "plane").
+
+
+=item *
+
+I<Rematrixing>: 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.
+
+=back
+
+
+Various other audio conversions (e.g. stretching and padding) are
+enabled through dedicated options.
+
+
+
+=head1 SEE ALSO
+
+
+
+ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1),
+ffmpeg-resampler(1),
+libavutil(3)
+
+
+=head1 AUTHORS
+
+
+The FFmpeg developers.
+
+For details about the authorship, see the Git history of the project
+(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
+B<git log> in the FFmpeg source directory, or browsing the
+online repository at E<lt>B<http://source.ffmpeg.org>E<gt>.
+
+Maintainers for the specific components are listed in the file
+F<MAINTAINERS> in the source code tree.
+
+
+