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Audio falls out of sync in Final Cut Pro X
So here’s my situation. I notice that when I exported my video that the audio that was attached to the video clip fell out of sync when I added some of the royalty free music that came with Soundtrack Pro, the .caf files. While I am editing, obviously you frequently playback your video to check how smoothly it flows. Well, if I start playback from the beginning of the timeline the dialog is out of sync when the music is playing underneath, but if i stop playback and resume then it is back in sync. I am editing a short video it has 3 clips from an Sony AVCHD cam totaling 1 minute, there is (1) 3 second slug, followed by a cross dissolve that goes got into the first clip. Once the playhead reaches the 2nd clip and the 3rd, the audio is synced fine. The first clip was added to Audition so I could pick the best one as well as I tried adjusting the playback settings from proxy to high quality and still I experience the same thing. I am running a 17″MBP 2.2ghz Quad core, 8gb of ram and 7200rpm hard drive with a 1 gb video card. Does anyone have any other suggestions or is this a known issue?
Mac Pro 8-core 2.26 Nahlem, 16GB of RAM, ATI 4870HD, 4TB & 4TB RAID 0
17″ MacBook Pro 2.2ghz quad core i7 8gb of ram 500gb 7200rpm HD 1gb video card -
18 Replies
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Does your video/audio media reside on your system drive or on an external drive?
Jason Jenkins
Flowmotion Media
Video production… with style!Check out my Mormon.org profile.
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Hi Jason, the media is on the system drive. I don’t have a portable drive thats fast enough to edit on with now.
Mac Pro 8-core 2.26 Nahlem, 16GB of RAM, ATI 4870HD, 4TB & 4TB RAID 0
17″ MacBook Pro 2.2ghz quad core i7 8gb of ram 500gb 7200rpm HD 1gb video card -
[Steven Love] “the media is on the system drive. I don’t have a portable drive thats fast enough to edit on with now.”
The first place I would start for better performance is to get an external media drive, even if it is just firewire 800. Other World Computing also has optical drive replacement kits for adding a second internal hard drive to your Macbook Pro. You really don’t want to edit off the system drive.
Jason Jenkins
Flowmotion Media
Video production… with style!Check out my Mormon.org profile.
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Yes I understand, but with all the enhancements to fcp 7 and X using proxy files I thought was the way to go on a MBP…which was why proxy compression was added right?
Mac Pro 8-core 2.26 Nahlem, 16GB of RAM, ATI 4870HD, 4TB & 4TB RAID 0
17″ MacBook Pro 2.2ghz quad core i7 8gb of ram 500gb 7200rpm HD 1gb video card -
I have had some audio sync problems with 1080p h264 footage during playback, but they are only during playback. On export they are fine.
Try making proxies or optimized versions of your media (File > Transcode) and see if that helps. Also try exporting your timeline and see if the problem persists.
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T. Payton
OneCreative, Albuquerque -
[Steven Love] “but with all the enhancements to fcp 7 and X using proxy files I thought was the way to go on a MBP…which was why proxy compression was added right?”
Humm. Can you say that again. I don’t quite understand what you were trying to say.
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T. Payton
OneCreative, Albuquerque -
The proxy codec was created to make editing on a portable much easier.
Mac Pro 8-core 2.26 Nahlem, 16GB of RAM, ATI 4870HD, 4TB & 4TB RAID 0
17″ MacBook Pro 2.2ghz quad core i7 8gb of ram 500gb 7200rpm HD 1gb video card -
I apologize when I read you original post I didn’t noticed that it was the export that was the problem, plus you tried proxy. I should remember not to try to answer questions when I am home sick in bed (as I am now.)
This sounds very odd, I use those .caf audio files all the time from the Soundtrack Library. I would try a few things.
1 -make a new event and project, reimport your clips and see if you can recreate the problem.
2- convert the CAFs to AIFFs see if you can reproduce the issue there.
3- trash FCP X prefs, repair permissions on your startup drive (in Disk Utility)
3- if the above doesn’t work, give Apple a call.Again I apologize for my previous responses.
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T. Payton
OneCreative, Albuquerque -
I’ll give those tips a try and keep you posted. Thanks for your response, no hard feelings.
Mac Pro 8-core 2.26 Nahlem, 16GB of RAM, ATI 4870HD, 4TB & 4TB RAID 0
17″ MacBook Pro 2.2ghz quad core i7 8gb of ram 500gb 7200rpm HD 1gb video card -
I’m having the same problem with the audio track recorded when I shot the video. I’ve captured video from my XHA1 and a Nikon P7000, and am having problems with audio/video falling out of sync. I’ve repeated capture, edit and export, and it comes and goes. At the moment, I’m unable to achieve sync with any of the files, even a 60-second clip from the P7000. This is making me crazy. I’m waiting to publish an indy music performance but can’t until I can fix the sync. I’ve read and tinkered till I’m exhausted. Any help will very much appreciated.
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