Please help: Getting strange artifacts for 2 seconds in rendered video

Report · Sep 25, 2023

I'm rendering a short video project and getting some strange video artifacts in a specific point in the video, when I render.

The artifcacts appear for just about 2 seconds. The video is fine before and after these problematic two seconds.

The Premiere project has a single video track and some linked After Effects comps on a track above with logos and text, but those don't seem to be the cause of the issue. I tried turning the track with AFX comps off and rendering, and I still got the same artifcacts.

The only thing significant about that specific point where the artifacts appear is that immediately before the artifacts appear, the video is extremely noisy with lots of colors animating at a fast pace.

I'm exporting to 1080x1080 , h264, 7mbps VBR. The video is 15 seconds long.

I've tried exporting directly in Premiere and also through Media Encoder.

Can anyone please help me troubleshoot this issue?

I don't think the issue is hardware-related.

I'm on a Windows 11 Pro machine with 32GB RAM, NVIDIA RTX A2000 (12GB vRAM)

I also tried on another Windows 10 computer with which I've worked on numerous video projects and has never had any issues, but got the artifacts there as well.

Thanks

Report · Sep 25, 2023

Update: The issue is resolved when I increased the rendering to a higher bit rate (20 mb/s) and then rendering again to 7 mb/s using Handbrake.

Sucks that Adobe can't do this on its own.