[MEncoder-users] A/V sync problems when encoding to mpeg2 DVD compatible file.

[Meneer Janssen]

Dear fellow MEncoder fans,I always record TV with MEncoder. I allways record to a file that has the video in mpeg2 video and the audio as PCM. This is because my computer is not fast enough to encode audio AND video on the fly at the same time. I use a command like:mencoder\ -tv driver=v4l2:device=/dev/video0:alsa:adevice=hw.0,0:amode=1:outfmt=yuy2:width=720:height=576:fps=25:audiorate=48000:freq=203.250\-o "output_file.mpg"\-oac pcm\-ovc lavc\-lavcopts vcodec=mpeg2video:vrc_buf_size=1835:vrc_maxrate=9800:vbitrate=6000:keyint=15:aspect=1.3333\tv://This results in a *perfectly* audio/video synchronized file, which plays just fine in Xine or Mplayer. When I want to convert it to a DVD compatible mpeg2 file (to burn it to DVD) id do the following. I encode the audio to mp2, stream-copy the video and set the file-format to "mpeg".  I used to use a command like:mencoder\"INPUT_FILE.MPG" -o "OUTPUT_FILE.MPG"\-oac lavc -ovc copy\-lavcopts acodec=mp2:abitrate=224\-of mpegThat command used to result in an mpeg2 file that I could author and burn to a DVD, and which was in perfect sync. If I played that file in Xine or Mplayer the total duration that showed up in the on-screen-display was too short, but otherwise it played just fine. But now all of a sudden (mplayer upgrade?) it does not work anymore. That command produces a load of errors and a file that is out of synch. The audio gradually gets out of synch during the recording.So now I use:mencoder "INPUT_FILE.MPG" -o "OUTPUT_FILE.MPG"\-ovc copy\-oac lavc -lavcopts acodec=mp2:abitrate=224\-of mpeg -mpegopts format=dvdIt produces no errors, but that does not help (not even with "-forceidx"). Total time too short and Audio/Video is still out of synch. Help!Best regards, Jansen.P.S. I do not know exactly where to "view" my post on the internet. I hope I will receive email....
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