[FFmpeg-cvslog] r21033 - trunk/doc/faq.texi

[Reimar Döffinger]

On Wed, Jan 06, 2010 at 02:49:31PM +0100, diego wrote:
> Author: diego
> Date: Wed Jan  6 14:49:31 2010
> New Revision: 21033
> 
> Log:
> Fix entry on concatenating multiple yuv4mpegpipe streams.
> patch by John Van Sickle, john.vansickle gmail com
> 
> Modified:
>    trunk/doc/faq.texi
> 
> Modified: trunk/doc/faq.texi
> ==============================================================================
> --- trunk/doc/faq.texi	Tue Jan  5 21:14:50 2010	(r21032)
> +++ trunk/doc/faq.texi	Wed Jan  6 14:49:31 2010	(r21033)
> @@ -316,6 +316,11 @@ ffmpeg -f mpeg -i - -sameq -vcodec mpeg4
>  
>  Similarly, the yuv4mpegpipe format, and the raw video, raw audio codecs also
>  allow concatenation, and the transcoding step is almost lossless.
> +When using multiple yuv4mpegpipe(s), the first line needs to be discarded
> +from all but the first stream. This can be accomplished by piping through
> + at code{tail} as seen below. Note that when piping through @code{tail} you
> +must use command grouping, @code{@{  ;@}}, to background properly.

I think it should be no problem to support YUV4MPEG files with multiple "header"
lines, which I think is necessary to support decoding of files with resolution changes
to YUV4MPEG.
I admit this probably will need a few more changes, and it is against what I have seen
as YUV4MPEG "specification", but do you think that this would be a good thing and probably
be accepted?