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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Saturday, June 7, 2008

[MEncoder-users] Audio / Video Sync issue

Hello,

I have the following:

DVD: Audio / Video Sync is okay

VOB: vob file created on hard disk using vobcopy. File on hard disk audio / video sync is okay

MPG: used mencoder to create an mpeg file out of it, I've tried different options:

mencoder -of mpeg -mpegopts format=dvd:tsaf -oac copy -ovc copy -o outfile.mpg infile.vob
mencoder -of mpeg -mpegopts format=dvd:tsaf -oac copy -ovc copy -vf harddup -o outfile.mpg infile.vob
mencoder -forceidx -of mpeg -mpegopts format=dvd:tsaf -oac copy -ovc copy -vf harddup -o outfile.mpg infile.vob

Result is for all versions the same, the video / audio is out of sync. It looks like that the lag between audio and video is constant and doesn't increase over time (in case that matters), I would say it is about 0.5 - 1s, you clearly see people moving the mouth and then you hear what they say, so sound is behind.

Any idea?

Thanks!
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