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| author | Tim Nicholson <Tim.Nicholson@bbc.co.uk> | 2011-12-21 17:12:05 +0000 |
|---|---|---|
| committer | Clément Bœsch <ubitux@gmail.com> | 2011-12-22 00:05:47 +0100 |
| commit | 7028c9f42168e704db74e0fc37b0ba029ab127b4 (patch) | |
| tree | 5d55b75a20e6693cd9fe9ff6bcdeae57beade981 | |
| parent | 1f797a5826fff7e487d91134fa4c58f54813a466 (diff) | |
| download | ffmpeg-7028c9f42168e704db74e0fc37b0ba029ab127b4.tar.gz | |
Clearer explanation of audio channel mapping restrictions
| -rw-r--r-- | doc/ffmpeg.texi | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/doc/ffmpeg.texi b/doc/ffmpeg.texi index 553d759ba2..83a45a8db6 100644 --- a/doc/ffmpeg.texi +++ b/doc/ffmpeg.texi @@ -825,9 +825,13 @@ The following example split the channels of a stereo input into streams: ffmpeg -i stereo.wav -map 0:0 -map 0:0 -map_channel 0.0.0:0.0 -map_channel 0.0.1:0.1 -y out.ogg @end example -Note that "-map_channel" is currently limited to the scope of one input for -each output; you can't for example use it to pick multiple input audio files -and mix them into one single output. +Note that currently each output stream can only contain channels from a single +input stream; you can't for example use "-map_channel" to pick multiple input +audio channels contained in different streams (from the same or different files) +and merge them into a single output stream. It is therefore not currently +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. @item -map_metadata[:@var{metadata_type}][:@var{index}] @var{infile}[:@var{metadata_type}][:@var{index}] (@emph{output,per-metadata}) Set metadata information of the next output file from @var{infile}. Note that |