[MEncoder-users] Demuxing and 6 channel ac3 audio

belcampo belcampo at zonnet.nl
Mon Mar 9 22:15:09 CET 2009

L Lee wrote:
> On 3/9/09 2:19 PM, "Henk Schoneveld" <belcampo at zonnet.nl> wrote:
>>> Is there a way to perform the mencoder video encoding step so that the
>>> mencoder output is recognized as a video stream with no audio (a la .m2v) by
>>> mplex so that I don't have to run an additional demuxing operation on it?
>>> I've tried using the -demuxer option as well as specifying the ".m2v" name
>>> extension for the output, but all methods I've used to determine the format
>>> of the results report muxed video even though no audio stream is present.
>> mencoder source.mpg -oac copy -ovc copy -of rawvideo -o
>> only-video-from-source.m2v
> Thanks, Henk. My encoding command currently uses "-of mpeg -mpegopts
> format=dvd:tsaf".
You explicitely say here put it in a mpeg container, which you later 
have to demux.
  I substituted "-of rawvideo" for that and everything seems
> to work the way I had hoped it would, without adding your command as an
> additional step. Is that OK
I think so.
, or do I risk problems by using "-of rawvideo"
What problems ?
> instead of "-of mpeg"?
> Also, do I risk problems making a DVD by ignoring dvdauthor's warning that
> the 24 fps frame rate of the input file is incorrect?
Try with a smaller file and you'll know it in a few hours.
> Thanks again.
> Laine
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