Inexplicable flickering green frames during playback and in exported MP4 files.

[Torontonian555]

I have Premiere Elements (v 18.0).

When I add 4K video files to the timeline, I see Inexplicable flickering green frames on the timeline (see attached screenshot) and during playback.

Those flickering green frames are also saved in an exported MP4 file (NOTE: I tried to attach the MP4 file, but the Adobe Support Community system rejected it).

What is the problem?

How to get rid of those green flickering frames?

[Ann Bens]

Green means you have an issue with your gpu.

Update driver.

If you want to upload a file use dropbox or OneDrive.

[Torontonian555]

Hi Ann,

Thanks for your comment.

I forgot to mention that I have Macbook Pro (Retina, 15 inch, Mid-2015).

So, all GPU updates come from Apple, and my Macbook is up-to-date for macOS Catalina 10.15.7.

Also, after publishing the post, I noticed that 4K, 30fps, H.264 videos taken by GoPro Hero 8 Black can be edited without a problem.

So, maybe the issue is inside VIOFO dashcam files which I am trying to edit?

I wrote to VIOFO an email asking to investigate the issue. 

Let's see what happens next.

Your additional input will be greatly appreciated