Audio and Video Out of Sync -AV sync problem

I am having that same exact problem. Usually, with the old iMovie, I would just have to export in the highest quality which was just HD. Now, even in the highest quality, I would have my audio out of whack. Please let me know what to do! I have video blogs to put out and edit... I really wish Apple would get their stuff together because apparently, this has been a major issue in 09' as well...

Have you tried: File -> Finalize Project?


-- Dan
Keeper of TheUnofficialiMovieFAQ.com

Thanks for the guidance and I am trying your suggestion now for a 32 minute movie. It indicates it will take 30 hours to create the 1080p movie. In addition to out of sync, some audio went missing and some audio was 5-8 minutes out of sync. Using iMovie '11 and iDVD '09.

Umm.... may want to try and copy and paste everything to a new project if that does not work. Good luck 😉

I'm having the same issue. Using footage from a handheld Creative Vado. Video is about 17 minutes long. First Exported to Itunes and the audio was progressively out of sync. Ended up being about 10 seconds off by the end of the video. Then tried exporting to Apple TV through Export Using Quicktime menu. Same Result. I never had this issue with iMovie 09

Problem still not resolved. Am trying to export to Quicktime. It's 33 minutes of video and stills so taking about 5 hours this time. Very frustrating experience.

I have a 36 minute iMovie and when rendered to iDVD, the audio is quite out of sync, some audio shows up where not expected and there are silent portions where there should be sound. From the iMovie, I created 5 new projects, and cut and pasted 5 - 8 minutes of the original AV into each. Then redid the music clips and the headings. I shared each segment with iTunes and all are in sync. I shared each as a large movie with Media Browser. I opened iDVD and dragged all five from the media list into the project. I burned a DVD and all five segments are in sync. I am now sharing all five with MobileMe and will know later today but expect they will be in sync as well. I still don't understand why this has to be so difficult and am pi$$ed off that Apple has failed to fix what appears to be a long standing issue.

Im having the same issue I have a project that is 9 minutes long tried all before even looking at the forum but It will not sync. Some one even told me to repair the permissions so nothing worked. I went to the Mac store no body knew what I was talking about so they asked me to call Apple so I did and was hung up on 3 times not only that but I was advised since I just bought the product I did have 3 months of tech support.

I mean I'm having an issue and they tell me I have 90 days of free service? This has got to be a joke. I than asked well can I just take it back and instal my 09 back? I was advised nope you wont be able to do so and you cant get your money back.

After this whole mishap I did learned that the less snips and clips and editing is on the project the sync and video will be ok but if you have lots clips such as most of us than we will continue on having this issue.

We need a fix ASAP

Yes!! EXACT Same problem...driving me ditzo...losing sleep. I get up and try to resave it; and half way through it loses the syncing between the video and sound...ugh!

...and I copied and pasted a new "project" 3 times...got worse...help!!

After my cutting, pasting, and reducing the 36 minute iMovie (combo of video, photos, music tracks, etc) to five shorter iMovies...they all rendered in sync on iDVD, MobileMe, iTunes, and iPhone 3GS. It seems like there is no consistent way to remedy this and is frustrating as heck to have to waste time with workarounds that seem to be OK for some folks and not others. YUCK!

Same problem!

3 days trying to fix it, nothing helps.

NEEDED THE VIDEO FOR SCHOOL FOR TODAY AND STILL DON´T KNOW WHAT TO DO!!

I THINK NEXT TIME I´LL USE MOVIEMAKER, IT´S UGLY BUT AT LEAST IT WORKS!! IM SORRY APPLE BUT MICROSOFTS MOVIEMAKER IS ACTUALLY MORE USEFUL THAN IMOVIE WITH SOUND OUT OF SYNC!!!! 😟

ok, problem solved with workaround.


you´ve gotta right click on every single clip and select "separate audio" (i dont know if exactly this says the option, because i´ve got the german version, where it says "audio trennen").

Then, after that, finalize the project and then export to iTunes.

Good Luck for all the people having the same problem!

I think this might work. For the US versions; its titled "detach audio". I just did that on each and every clip, and am now saving. For others, you might want to try it....it sure looks like it should work. A question for you is: now when its all done saving as a "large" file (that's what I selected), are you saying I then need to also select "Finalize Project"???