DragonFly On-Line Manual Pages

doc::libswresample(3)                                    doc::libswresample(3)

NAME
       libswresample - audio resampling library

DESCRIPTION
       The libswresample library performs highly optimized audio resampling,
       rematrixing and sample format conversion operations.

       Specifically, this library performs the following conversions:

       o   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.

       o   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").

       o   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.

       Various other audio conversions (e.g. stretching and padding) are
       enabled through dedicated options.

SEE ALSO
       ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), ffmpeg-resampler(1),
       libavutil(3)

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 git log in
       the FFmpeg source directory, or browsing the online repository at
       <http://source.ffmpeg.org>.

       Maintainers for the specific components are listed in the file
       MAINTAINERS in the source code tree.

                                                         doc::libswresample(3)