Every Export has a glitch in it

Thanks for the detailed post, now we'll see if some others can pop in with ideas.

Have you tested in 25.x yet? You can have them installed simultaneously, of course.

Macbook pro M3 with 18gb. I'm on version 24.6.1 (Build 2) Rendering it out H.264 and Pro Res for the long format ones, sometimes in 1080 and sometimes in 4k. Some of it's R3d footage and some of it's Canon Mp4's. No extra effects or anything besides color. No extra layers ontop. Some of them are even just a layer of audio and a layer of video with nothing. 

Nothing is ever the same and that's why i finally had to toss it here to see if anyone else had this problem. I thought it might've been media encoder and batch exporting things but it's just everywhere and very random. 

So actual help would be great and also a wild guess could also be great... 

Sigh.

Do you want wild guesses, or actual like, help?

For help, please give details! As always OS/CPU/RAM/GPU/GPU driver, the media used and what created it, meaning formats/codec from what source, and the effects typically used.