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One of two video tracks out of sync after export

Community Beginner ,
Jun 10, 2024 Jun 10, 2024

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Hi! 
Following situation:
I've recorded an Interview with two cameras. around 1h.
One got some glitches after 7min (bad battery dummy). After this and more glitches picture and sound got out of sync more and more, which i put in sync again visually by matching same moments in frames. 
I did my cut and everything looks fine in edit. But after export, no matter via ME or in Premiere itself, after those 7min 2nd cam (corrected glitches) gets out of sync. cam1 stays in sync (no glitch) inside one exported video which i never had before.
What can I do, that Premiere renders the way cam2 as well as it shows in edit?

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correct answers 1 Pinned Reply

Adobe Employee , Jun 10, 2024 Jun 10, 2024

Hi @invisibleavatar,

I read your bug report and am glad your sync issue is solved.

 

If you like, you can file another bug report for the export issue. Let me know if you need help doing that.

 

I will move this issue into Discussions.

 

Thanks,
Kevin

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Community Beginner ,
Jun 10, 2024 Jun 10, 2024

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PS: I just tried Quicktime, MPEG2 and ProRes (not H.264) as a different Encoder, but its the same. cam1 is correct and cam2 is out of sync.

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Community Beginner ,
Jun 10, 2024 Jun 10, 2024

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ok, I ve figured out: When i move the clips back to its old position (which is async in Session) - in export its "right" again. 
This is so far my C-Plan. But i would love to get a solution for my export as i see it now . 

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Adobe Employee ,
Jun 10, 2024 Jun 10, 2024

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Hi @invisibleavatar,

I read your bug report and am glad your sync issue is solved.

 

If you like, you can file another bug report for the export issue. Let me know if you need help doing that.

 

I will move this issue into Discussions.

 

Thanks,
Kevin

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Adobe Employee ,
Jun 10, 2024 Jun 10, 2024

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Hi @invisibleavatar,

Thanks for the message and the information you have. In troubleshooting the export issue, please give us more info about your system and the exported file's specs. A test you can try is to upload the file to YouTube or Google Drive to see if the project is in sync there. If so, your system might have performance issues playing back the file. It's hard to tell at this point. Feel free to send me any files via PM and I can take a look here.

 

Thanks,
Kevin

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Community Beginner ,
Jun 11, 2024 Jun 11, 2024

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hi! So, first, its NOT solved. Its a C-Plan in case we dont find a solution here.

Resumee for the recent state:
Two cams recorded each one file, around 1,5h.
One is perfect the other one got corrupted at around 5 short (while someone hit the tripod) glitchy parts of the Clip.
both: MP4, 4:2:2, Sony Slog3, 10bit
corrupted file size 54GB 

I started a Premiere session with both clips in parallel (two cam interview setup)
for the corrupted one the pic and sound get out of sync with each glitch more and more. So I've brought pic & sound in sync manually by comparing frames to the non-corrupted. So, i finished my edit, everything looks fine in session. But after the export every part of my video where the corrupted Clip is shown, the tone is out of sync. The non-corrputed Clip - parts are perfect. Means, in one Export-video I've parts where pic is out of sync and some are in sync.

So testwise, for one edited part I tried to move the corrupted file to its orginal position (before i ve corrected it manually in session). so, in session its out of sync again, but in export its correct. Which is stupid, because its a pain of work to work blind in session (recorrecting all those edited clips to its orginal position) - so my quesion stays: how can i use the "right" looking Edit I did to look same in export without reediting the whole projekt blindly?

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Community Beginner ,
Jun 14, 2024 Jun 14, 2024

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@Kevin-Monahan 
can you read my last message please. 
best 
Daniel

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Adobe Employee ,
Jun 14, 2024 Jun 14, 2024

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I'm sorry to hear about your issue with audio sync on export, @invisibleavatar. I'm not quite sure why you're getting those results. However, when it comes to corrupt media, I do not trust it in the Timeline for editing or export. I always transcode the media to an intermediate codec and then edit from that. Since you've already completed your edit, you might try a test with the corrupt clips and perform a "render and replace," which would change the clips' codec in the Timeline. Then export. That could work. Please try it and report back.

 

Thanks,
Kevin

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Community Beginner ,
Jun 17, 2024 Jun 17, 2024

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ok, thx Kevin! You are right. in worst case it will be my lesson (even thou that didnt happen for 4 years now). 'never work with glitched material in a timeline'. learnt. : )
I will try and report

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Community Beginner ,
Jun 27, 2024 Jun 27, 2024

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hi, just to close this question, I didnt have success. Just learnt - when you see glitches combined with video and sound getting out of sync: test and make a HQ render which renders the damage. So you know what you really  see before you go on.

Cheers and thx for joining to find a solution

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