From e1f4dd6d41f2ef8cd6db444a3b70946d7a1e29a9 Mon Sep 17 00:00:00 2001 From: Stefano Sabatini Date: Wed, 11 Aug 2010 14:49:41 +0000 Subject: [PATCH] Extend and clarify documentation for -ac ffmpeg option. Fix roundup issue #2061. Originally committed as revision 24772 to svn://svn.ffmpeg.org/ffmpeg/trunk --- doc/ffmpeg-doc.texi | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/doc/ffmpeg-doc.texi b/doc/ffmpeg-doc.texi index ccf06b52de..71bed9b711 100644 --- a/doc/ffmpeg-doc.texi +++ b/doc/ffmpeg-doc.texi @@ -510,7 +510,10 @@ Set the audio bitrate in bit/s (default = 64k). @item -aq @var{q} Set the audio quality (codec-specific, VBR). @item -ac @var{channels} -Set the number of audio channels (default = 1). +Set the number of audio channels. For input streams it is set by +default to 1, for output streams it is set by default to the same +number of audio channels in input. If the input file has audio streams +with different channel count, the behaviour is undefined. @item -an Disable audio recording. @item -acodec @var{codec}