I was hoping someone might be able to help with a remuxing issue I've recently encountered. My basic process is this; while converting my DVDs to digital files for play through a WDTV media player, I start by extracting the vob file using K9Copy, and then I subsequently remux that file through avconv (previously ffmpeg) into the same container format. I perform the remux because it has helped correct an issue where the video length is incorrectly reported in the intial vob file. This is the command I use to remux the file: avconv -i <inputFile>.vob -map 0:0 -codec:v copy -map 0:1 -codec:a copy -f dvd <outputFile>.mpg After rebuilding my computer recently and installing the latest copy of Xubuntu (11.10), all of my remuxed files have become jittery even though I'm performing the exact same steps the same way. I'm assuming that it's a result of a newer version of avconv (or ffmpeg, as the result is the same in either), but I can't seem to figure out a fix. The jitter is most obvious in Windows Media Player or playback on my WDTV box. It seems to be automatically corrected by Xine or Mplayer, although there is still evidence that something isn't in sync between the video and audio. In my best guess, it seems that video frames are being dropped even though I'm performing a simple stream copy. The jitter is more pronounced the longer and larger the file is. I'll follow up with two emails with video samples (too big to attach in a single email). Video_01_Smooth.vob is an example of a smooth vob file and Video_02_Jittery.mpg is a remuxed mpg showing the jitter created as a result of the remux. One final note, I can "fix" the jittery file by running the following command, but than I loose the audio in the process: avconv -i Video_2_Jittery.mpg -map 0:0 -codec:v copy -f mpeg2video Video_2_Jittery_NEW.mpg Any thoughts? Jeff
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