On Wed, Jul 06, 2011 at 10:59:23PM +0200, Anton Khirnov wrote:
>
> --- a/doc/ffmpeg.texi
> +++ b/doc/ffmpeg.texi
> @@ -551,19 +551,19 @@ The timestamps must be specified in ascending order.
> @item -ar @var{freq}
> -Set the audio sampling frequency. For input streams it is set by
> -default to 44100 Hz, for output streams it is set by default to the
> -frequency of the input stream. If the input file has audio streams
> -with different frequencies, the behaviour is undefined.
> +Set the audio sampling frequency. For output streams it is set by
> +default to the frequency of the corresponding input stream. For input
> +streams this option only makes sense for audio grabbing devices and raw
> +demuxers and is mapped to corresponding demuxer options.
OK
> @item -ac @var{channels}
> -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.
> +Set the number of audio channels. default to 1, for output streams it
> +is set by default to the same number of audio channels in input.
Set the number of audio channels. For input streams the default is 1,
for output streams the default is the number of input audio channels.
Diego
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