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Adobe Premiere CC 2020 Audio Out of Sync After Export

Community Beginner ,
Feb 27, 2020 Feb 27, 2020

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I have a project timeline where audio has been synced, but when I export to h.264 or other codecs, it goes in and out of sync at random areas. It doesn't just go out of sync, it comes back in sync again. But in the timeline it is all in sync. What could cause this and how to fix?

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Audio, Export

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correct answers 1 Correct answer

Adobe Employee , Jun 07, 2021 Jun 07, 2021
Hi roycefilmmaker (and other), I'm so sorry about your specific issue. These past months, I have found that Premiere Pro can play back most kinds of H.264 footage (especially with proxies). However, when exported to H.264 or HEVC at 4K or 8K quality, some computers might not be powerful enough to actually play back the resulting H.264 file. You can test it out a couple of different ways to make sure. One way to test this: upload the file to video file sharing site. Any of them will do. If your...

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Explorer ,
Jun 08, 2021 Jun 08, 2021

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I think my head just exploded haha. Thank you for your answer Kevin. My video isn't even 4K, just HD. It does play perfectly in premiere pro like you say, and I made sure I upgraded my Mac to be able to cope with Premiere pro stresses so I'm relieved at that. 

 

My problem fixed itself when I moved my file from my external hard drive to my Mac desktop and it played perfectly when stored on my Mac desktop rather than the usb drive. A big mistake from me that I just never thought of so I think I'll be changing how I use my hard drives now haha.

 

Thank you for your help

Josh

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New Here ,
Jul 23, 2021 Jul 23, 2021

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I read your comment, moved my video from hard drive to my desktop and -- like you said-- working perfectly! Thank you Kevin and Josh! 

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Explorer ,
Jun 08, 2021 Jun 08, 2021

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Thank you Kevin, I think my head just exploded haha. Thank you for your answer Kevin. My video isn't even 4K, just HD. It does play perfectly in premiere pro like you say, and I made sure I upgraded my Mac to be able to cope with Premiere pro stresses so I'm relieved at that. 

 

My problem fixed itself when I moved my file from my external hard drive to my Mac desktop and it played perfectly when stored on my Mac desktop rather than the usb drive. A big mistake from me that I just never thought of so I think I'll be changing how I use my hard drives now haha.

 

Thank you for your help

Josh

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New Here ,
Jul 15, 2021 Jul 15, 2021

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Could this same problem be happening when viewing on a computer and on an iPhone? I recently exported a video in 4K that is in sync on my computer but when I transferred it to my iPhone the cuts to the beat of the music were out of sync. I haven't been able to find out which end is having the issues: my computer or my phone. 

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Explorer ,
Jul 24, 2021 Jul 24, 2021

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It's hard to tell. Do you have any other devices that you could try it on? What way are you watching on your iPhone?
A good test is to upload it to YouTube as a private video to see what everyone's viewing experience is like for the video.

 

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New Here ,
Jul 26, 2021 Jul 26, 2021

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Mine has just started doing this. This fix is so complicated and shouldn't be required. Premiere should not be exporting with an audio time lag.

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New Here ,
Jul 26, 2021 Jul 26, 2021

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Using a thunderbolt drive

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Explorer ,
Jul 26, 2021 Jul 26, 2021

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Hi Charlotte.
I agree it shouldn't be happening either.  

Try exporting to you actual Mac or PC documents folder rather than the hard drive and see if that works!!

 

thanks

Josh_preece100

 

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New Here ,
Jul 26, 2021 Jul 26, 2021

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So weirdly I've tried exporting it in pro res 422 without maximum render quality instead of H264 and it's fine.

A bit annoying though as many clients aren't able to watch pro res files so I'd have to export that as mp4 or .mov?

 

 

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Explorer ,
Jul 26, 2021 Jul 26, 2021

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So strange. I really don't understand why this is happening. 

 

So could you try export in h264 without max render quality? 

 

or could you put the pro res file into media encoder and switch it to mp4? I don't know if that's possible

 

Cheers

IG josh_preece100

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New Here ,
Jul 26, 2021 Jul 26, 2021

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I am having this same problem.  Is appears that it is because of the new operating systems. How do we fix this? 

 

Thank You

Jack

 

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Explorer ,
Jul 26, 2021 Jul 26, 2021

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Hi Jack, it's a real nightmare isn't it! 

It's not just you having issues. Many people are having these problems at the minute!

 

If you are exporting to an external hard drive, try exporting your desktop.

 

If that doesn't work try exporting through Premiere Pro rather than Media Encoder or vice versa. 

 

cheers

Josh

 

IG josh_preece100

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New Here ,
Jul 27, 2021 Jul 27, 2021

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I am having this same problem and am trying to determine if it is my new computer. I have an Apple Mini with the m1 chip. I have the base model with 8gb Ram and I know this is a light weight. But,  I'm editing sony xavc files pretty flawlessly. I can render edits of 7 minutes or so long in encoder and or directly from premiere and there is no audio sync issues. But, when I go to render an hour and a half program that I filmed, I just can't get it to render a synced audio and video.  I've uploaded to Youtube (h.264 4K) and the sync issue stays with it, so I feel like this rules out a preview or quicktime playback issue. At any rate, main question: Is anyone else using the M1 chip from apple and is this a contributor. Or am I likely in the realm of OS not playing well with others? Thank you for any help. 

 

-Cullen

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Adobe Community Professional ,
Jul 27, 2021 Jul 27, 2021

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so what is the frame rate of your source files and does that match the frame rate of the sequence?  Does an hour and a half long sequence play in synch within premiere, or is this just an export issue?  What happens if you export a prores file of about an hour and a half, is there still a synch issue?   And just to make sure, are all your source files sony xavc files?  by any chance are any source files from a smart phone or screen recording?   

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New Here ,
Jul 28, 2021 Jul 28, 2021

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Thank you for your reply!

 

Frame Rate of footage and sequence are both 23.976.

Hour and a half sequence plays in sync within premiere. It appears to only be an export issue.

I will test a prores export but have not yet.

All source files are the same camera (Sony z-90...xavc)

 

The sony footage is essentially 4K and my premiere sequence matches and I have exported h.264 to match the source. I have also exported with the youtube 4k setting all with no success. I also tried to export to 1080p and sync is still of in export.

 

I had thought that just a week ago as I set up my new mac mini that I had downloaded the most current Creative Cloud, but went back into CC and saw updates which included native support for the M1 chip. I have updated Premiere and Media Ecncoder and am currently waiting on a new render of the hour and a half sequence to see if this helps.

 

I know these things have a way of working out eventually, sometimes with clear reasons and often not. Thanks for any help from anyone!

 

Cullen

 

 

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