MEncoder

„MEncoder is a free command line video decoding, encoding and filtering tool released under the GNU General Public License. It is a close sibling to MPlayer and can convert all the formats that MPlayer understands into a variety of compressed and uncompressed formats using different codecs.“

MEncoder. (2008, February 23). In Wikipedia, The Free Encyclopedia. Retrieved 18:57, April 5, 2008, from
http://en.wikipedia.org/w/index.php?title=MEncoder&oldid=193447614


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Thursday, May 8, 2008

Re: [MEncoder-users] Remuxing to mp4 on windows

Nicolas Hesler <nicolas.hesler@sheridanc.on.ca> writes:

> I then dump the streams using Mplayer.

You didn't say how you dumped them. Presumed it's "dumpvideo" and/or
friends, mplayer doesn't seem to produce valid h264 streams that
way. Don't ask me why, I never followed up on this issue myself.

So demuxing should be done differently, and apparently MP4Box itself can
deal with the avi's created by mplayer pretty well. What I usually do is

MP4Box -aviraw video clip.avi
MP4Box -aviraw audio clip.avi

which produces raw AAC/AVC stream files "clip_audio.raw" and
"clip_video.h264". Then I rename the audio file to "clip_audio.aac"
and mux with MP4Box

MP4Box -add clip_video.h264 -add clip_audio.aac clip.mp4

That works on Linux at least, and I'm pretty confident it will work on
Windows either.

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