[MEncoder-users] Transcoding MJPEG MOV to AVI

Jon Drukman jdrukman at gmail.com
Fri Mar 13 01:08:05 CET 2009

Mark Williams wrote:
> Greetings all,
> Ive searched the mailing-list archives, net for answers, but not luck :(
> Im trying to transcode a video recorded by Cycorder (iPhone video recorder).
> It produces MJPEG video in a MOV container.
> Mplayer, plays video & audio from these files perfectly.
> The problem seems to be the movie has a variable framerate (seems to
> vary from 5 to 15 fps).
> With only simple mencoder options, the produced AVI is about 1sec long
> compared to the original 2min video.
> With the input fps set, i get correctly encoded video, but obviously
> the video timing is out, so audio is out of sync.
> What options do i need to use to have mencoder perform this task?

in theory you need some combination of -vf harddup, -noskip and maybe 
-mc 0.

in practice, i gave up trying to get mencoder to produce videos that 
stayed in sync and switched to handbrake.


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