Quicktime player trimming issues

Has anyone ever experienced badly synched audio after saving a newly trimmed video on quicktime? I do trimming all the time but only had this issue after I updated my OS to Big Sur. 50% of my work involves trimming videos and I cannot continue to have this issue with my quicktime player. Any help or suggestion please to fix this?

MacBook Air (2020 or later)

Posted on Jun 22, 2021 6:55 AM

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2 replies

Jun 22, 2021 7:42 AM in response to AlyzahLois

I do this not every day but relatively often, and have never seen the problem you describe.

In order to help, we need more information.

What are the codec and frame rate of the video? Does it happen with other kinds of video, eg. mov files with H264?

There could be a software conflict of some sort. Please run Etrecheck and post its full report here. Use the "additional text" button and paste the report into the text box.

Oh... do you have Chrome installed?

Jun 22, 2021 12:04 PM in response to AlyzahLois

A shortish sample file in some Dropbox etc service would help (not Youtube because it re-encodes the movies). Or try Avidemux.

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Quicktime player trimming issues