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Diffstat (limited to 'doc/ffmpeg.texi')
| -rw-r--r-- | doc/ffmpeg.texi | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/doc/ffmpeg.texi b/doc/ffmpeg.texi index e3a4c755ba..943301a567 100644 --- a/doc/ffmpeg.texi +++ b/doc/ffmpeg.texi @@ -835,6 +835,18 @@ possible, for example, to turn two separate mono streams into a single stereo stream. However spliting a stereo stream into two single channel mono streams is possible. +If you need this feature, a possible workaround is to use the @emph{amerge} +filter. For example, if you need to merge a media (here @file{input.mkv}) with 2 +mono audio streams into one single stereo channel audio stream (and keep the +video stream): + +@example +ffmpeg -i input.mkv -f lavfi -i " +amovie=input.mkv:si=1 [a1]; +amovie=input.mkv:si=2 [a2]; +[a1][a2] amerge" -c:a pcm_s16le -c:v copy output.mkv +@end example + @item -map_metadata[:@var{metadata_spec_out}] @var{infile}[:@var{metadata_spec_in}] (@emph{output,per-metadata}) Set metadata information of the next output file from @var{infile}. Note that those are file indices (zero-based), not filenames. |