I had a devil of a time with audio syncing. I have two machines running Kdenlive. An Ubuntu 9.04 32 bit box and an Ubuntu 9.10 64 bit system. I'm running the latest 7.6 release. Both machines haad the same problem.

I read the instructions about removing Pulse audio, but it did not help.

After some investigation, it appeared that the audio sync problems only occurred when I edited the clips in Kdenlive. I also read somewhere that there is a problem with audio sync with DV format video. The video was shot with a Canon SD750 which produced AVI files.

My solution was to convert the raw footage to another format. I choose MPG. Interestingly enough, I used Kdenlive to do the conversion. As long as the raw footage was not altered, it converted with no sync issues. Once the clips were converted, I was able to cut and edit them in Kdenlive with no problems to produce my final work.

This looks like a bug.

I'm off to non-video projects, and probably won't be checking this forum. If you need more info, contact me at: kden *dot* zenguy *at* spamgourmet *dot* com.

You may want to check this MLT bug :

http://sourceforge.net/tracker/?func=detail&aid=2892086&group_id=96039&atid=613414

It's related to audio sync problems with certain MJPEG AVIs observed in Kdenlive.
But it turned out, that the underlying MLT framework has an issue with these files.

Have you tried to play your files with melt (MLT viewer application), maybe enforcing some seek operations ?

Toby