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Audio Video OOS (Out of Sync)
All,
I might have posted this question before, but have not gotten a good answer. I am wondering how you folks solve this problem. I have a Audio Recorder and a AVCHD Camcorder trying to record some events, however, upon importing the Audio and Video separately and loaded into PPro CS5, The AV are a few mini-seconds off. I sync them up at one point, then, soon, they are unsync again after a while (~10min)? I heard this is a long time problem for digital recording, but, I have not encountered such until now. Anyone can help?Thanks,
Perry -
10 Replies
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Have you installed the latest updates?
The CS5 updates include some fixes for audio/video synch issues. One of these fixes requires clearing your media cache and letting Premiere Pro reconform and reindex the media, since the bug is actually in that indexing phase.
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Todd Kopriva, Adobe Systems Incorporated
Technical Support for professional video software
After Effects Help & Support
Premiere Pro Help & Support
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I will check as soon as I can. Thanks for the tips, however, what I am talking about is not post-render OOS but when imported to PPro, or any other program for that matters, there seems to be a 0.02s or so every so often. i.e. if I match up one section of the video, after a while, another section will be out of sync. I believe this is a known issue with different device recording. However, I have no fix. Anyone can help would be greatly appreciated.
Perry
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Todd wasn’t speaking of post-render, he was talking about immediately after audio is imported, when Premiere conforms the audio file and indexes it. You can see the yellow progress bar down on the lower right corner of the PPro window.
It might be helpful to know the type of audio recording device plus the camera model, as well as the sample rate.
Steve Brame
creative illusions Productions -
This can happen if there is an inconsistency in the sample rates of the project and the recorded audio.
ie: recording was done with 44.1K @ 24fps, but the project is 48K @ 25fps.
Please provide the frame and audio sample rate details of the video and it’s audio and the separate audio and the project.
Cheers,
– JB
Jon Barrie
aJBprods
Jon’s YouTube Tutorial Page
follow Jon with twitter -
What make and model number is your audio recorder? It could just be that its clock is not very accurate.
Bruce
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Bruce Sharpe
Singular Software Inc.
http://www.singularsoftware.com -
Mine is an iRiver iFP-890, not a prof recording device, obviously. It has external MIC input able to record up to 44KHz @ 96KBPS only.
Perry
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Thanks guys, I will try to update my PPro. As far as the mix of audio quality, yes, I don’t know how to get around with that because of my limited equipment (personal hobby only). see my post below to the specifications limitation.
Perry
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Since most (or all) of the sequence templates default to 48K audio, I’ll bet Jon’s answer above is exactly your problem.
Steve Brame
creative illusions Productions -
Steve,
So if I convert the 44K audio to 48K in audition, would that then match up my audio? Thanks in advance.Perry
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I surely couldn’t guarantee it, but if you have 44K audio on a 48K audio track, that’s certainly the first place I’d look.
Actually, what I’d try first is creating a new sequence with 44K audio and copy the other sequence’s material onto it, then import your 44K audio to that new sequence.
Steve Brame
creative illusions Productions
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