diff --git a/doc/muxers.texi b/doc/muxers.texi index a49853daf2..d65eaa767b 100644 --- a/doc/muxers.texi +++ b/doc/muxers.texi @@ -1312,6 +1312,30 @@ ffmpeg -re -i -map 0 -map 0 -c:a libfdk_aac -c:v libx264 \ -f dash /path/to/out.mpd @end example +@section daud +D-Cinema audio muxer. + +It accepts a single 6-channels audio stream resampled at 96000 Hz +encoded with the @samp{pcm_24daud} codec. + +In addition, each muxed packet size must not be greater than 65535 bytes. + +@subsection Example +Use @command{ffmpeg} to mux input audio to a @samp{5.1} channel layout +resampled at 96000Hz: +@example +ffmpeg -i INPUT -af aresample=96000,pan=5.1,asetnsamples=3640 slow.302 +@end example + +The @samp{asetnsamples} filter is used to reduce the number of samples +of each audio packet, with a size computed according to the formula: +@example +65535 / (@var{channels} * @var{encoded_sample_size}) = 655535 / (6 * 3) = 3640 +@end example + +The @var{encoded_sample_size} = 3 factor is due to sample size of the +@samp{pcm_24daud} encoder. + @anchor{fifo} @section fifo