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Audio drifing out of sync

New Here ,
Mar 31, 2023 Mar 31, 2023

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Hi there,

 

When I import my audio, I can sync it with my video - but after 15 minutes into the video it drifts about 12 frames. I am new-ish to Premier so would love some ideas on what to do..

 

Here is some info:

 

Premier sequence settings: 48K audio, 25fps

Video file: 25fps - no variable frame rate detected

external audio file  - exported from Cubase 25fps session, 48 k/24bit

 

Adobe Pro 23.2

Macbook Pro version 12.5

 

Thank you!

 

 

 

 

TOPICS
Editing , How to , Import

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Community Expert ,
Apr 01, 2023 Apr 01, 2023

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The easiest way to fix it is to use the rate stretch tool to drag the length of the audio to the correct length. 

rate stretch tool.png

As to why it is out of sync, was the audio recorder locked to the camera, all free running devices will drift some more than others.

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Community Expert ,
Apr 01, 2023 Apr 01, 2023

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Your footage was probably recorded in a variable frame rate. I recommend taking your footage into the free app HandBrake and converting it to a format with a fixed/constant frame rate. Then import the new footage into Premiere.

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Community Expert ,
Apr 01, 2023 Apr 01, 2023

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As suggested by RobShultz, it may be VFR.  Please use the free MediaInfo and post a screenshot of the properties of your media in tree view:
https://mediaarea.net/en/MediaInfo

Many users are having issues with VFR. If the file is variable frame rate, use Handbrake to convert to constant frame rate:
https://handbrake.fr/downloads.php
Here is a tutorial:
https://www.youtube.com/watch?time_continue=34&v=xlvxgVREX-Y

Shutter Encoder may also be used to convert to Constant Frame Rate:
https://www.shutterencoder.com/en/

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