Quoting [EMAIL PROTECTED] ([EMAIL PROTECTED]):
> I did some more experimenting.  During my conversion from MJPEG to
> MPEG2, I have to extract the audio and video tracks from the MJPEG
> separately, encode them to MP3 and MPEG2 (respectively) individually
> and then remux them back in to the MPEG2 container.
> 
> So I have four files I can play with.  The original MJPEG, an MP3, and
> MPEG2 (with no audio) and the final MPEG2 with audio.  When I play the
> MPEG2 with audio, it judders a lot and the fields go in and out of
> parity frequently.  When I play the video only MPEG2, it doesn't go
> out of field parity with any where near the frequency and the judder
> is on a pretty much constant schedule.  Like once a second (or close
> to a second) there is a slight judder back and forth.
> 
> BTW, I also made an MPEG4 (mencoder ... -ovc lavc -lavcopts
> vcodec=mpeg4) from the MJPEG file and it seems to judder and go out of
> field parity less frequently than the MPEG2 file as well.

Maybe it's related to the different CPU consumption of different codecs.

-- 
Best regards,
  Denis Oliver Kropp

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