Sound and video get out of sync

Hi,
I am trying to craete a small little instructional video
My video is a .avi that has 44100 audio and 29 fps
First - Which presets should I be using?
Second - Im trying every preset I can and watching some videos but everytime I try and edit my video and then play or move the timeline the sound gets off. Can you guys help? Thanks so much if you can
Im on CS4 and have done all the Updates

Im still not sure which Preset to use? I read your article and may have just missed how to check the preset?
The selection of the Preset will depend on exactly what G-Spot tells you about your source footage. Things like Frame Size, Frame Rate, etc.
As for MJPEG, I agree with Harm's suggestion to install either the Morgan, or the MainConcept MJPEG CODEC's. For most users, either works perfectly. The choice is yours.
I wonder which MJPEG CODEC you have installed? G-Spot has Tables, where you can see installed Video CODEC's. Be aware that it will show false positives for the Adobe MainConcept installed CODEC's being broken. This is due to Adobe's naming convention for its installed CODEC's, to keep others from overwriting, or breaking them, but it fools G-Spot and Sherlock the CODEC Detective.
Good luck,
Hunt

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Audio and video is out of sync!

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Welcome to Apple Discussions, m
See if any of the suggestions offered here reduce your sync quality problem enough:
http://discussions.apple.com/thread.jspa?messageID=7089133&#7089133
If, after making certain that your Mac is running well, has plenty of free space on the correct drive, etc., your sync is still not close enough, you can manually re-sync any parts that are unacceptable to you using either QT Pro or iMovie.
If you check carefully, you will see that not even pro video is always perfectly synced. It is a lot of work to get things "nearly perfect," but, with a bit of practice, it doesn't take long to get things "close enough" for me.
I use the same simple process with either QT Pro or iMovie, so you can use whichever you find easiest. Whichever you use, keep the original AV clip safe and *_work on a copy_* in case something goes wrong.
If you do not already know how, here is my process, but you can adjust for your workflow:
(1) Copy of the audio track.
(2) Add the audio track copy to the AV file.
(3) Silence the original audio and work on audio copy.
(4) Insert small blank audio clips (or split and slide if using iMovie) if needed to make the audio later.
(5) Cut small bits out of quiet parts (or split and shorten in iMovie) if needed to make audio sooner.
(6) Repeat until satisfied and delete any tracks no longer needed.
(7) Save the adjusted AV file.
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Sound and video get out of sync

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