On Thu, Jul 07, 2011 at 07:07:37AM +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.
mapped to the
> @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. For output streams it is set by
> +default to the same number of audio channels in input. For input streams
For output streams it is set by default to the number of input audio
channels.
> +this option only makes sense for audio grabbing devices and raw demuxers
> +and is mapped to corresponding demuxer options.
mapped to the
Diego
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