Desperate! Video flickering on timeline and export

Ranknetics wrote:

I have an update, please watch this: https://screencast-o-matic.com/watch/c3XDq3VUDcx

There is something funky in the file.

Try this:

In the Finder, control-click the file you received, and do Services->Encode Selected Video Files, and choose

ProRes.

Import that into FCP. Does it work?

It looks like some glitch with the frame ordering or something...

No idea why, but maybe we can try to get around the problem.

Did you try:

a) reexport the video - always the same problem?

b) export the video with another codec, like ProRes? I am pretty sure that the ProRes video will not suffer from this.

Then you can try reencoding from ProRes to H264 directly in the Finder or using Compressor, or HandBrake.

It depends on which OS you have.

Apple will only offer the most recent version compatible with your OS.

For Monterey or Ventura, that is 10.6.5.

For safekeeping, I recommend making a zip of the version you have now.

Go to the App Store, click on your account (bottom left) and then click the Update button.

Please post an EtreCheck report https://etrecheck.com giving the application Full Disk Access in Privacy System Preferences. Copy the report and use the Add Text button to paste the result into reply box. 

ProRes files take a lot of space. That is to be expected.

They are especially amenable for editing and.

Contrary to common distribution codecs (like H264 or HEVC), in ProRes files each frame is encoded separately. These other codecs use temporal encoding: only some frames (called I-frames) are encoded entirely, whereas nearby frames only encode changes from the ones before (or sometimes, after). Something in that temporal encoding must have become corrupted.

It is quite possible that if you just transcoded the ProRes file back to H264, that one would work (and there may not be significant loss of quality, depending on the image).

What computer is this exactly? What OS and FCP versions?

Any reason why you are sticking with this old version, 10.4.9?

What's the computer? It's unfortunate you didn't go to 10.4.10. It's a very stable version.

Update the OS as well.