Starlight Precise 2.5 - 10bit H.265/HEVC Not Working Properly, Garish Colors

Topaz Video Bugs and Issues
1

Hi, I’m using Starlight Precise 2.5 in Topaz Video AI 1.6 on a M5 Max MacBook Pro. I’m trying to use an H.265/HEVC video in 10bit color, but it’s resulting on horrible garish colors everywhere. Here’s the upscaled video: https://dominicpettifer.com/topaz-demo/mustangs-bridge_slp.mp4 and if it helps here’s the original video (HEVC 10bit) https://dominicpettifer.com/topaz-demo/mustangs-bridge.mp4

If I convert the video to 8bit color beforehand (can be either H.264 or H.265) it works great (actually impressed with the results so far). Also doesn’t matter which resolution I’m converting from/to (tried 1080p → 4K, 1080p → 1080p, 720p → 1440p) still the same issue. Also doesn’t matter what output codec I use (H.264 or H.265 10bit).

Although the workaround works, would like to keep 10bit for color grading. Thank you!

2

Found a workaround, I can convert the 10bit HEVC video into an Apple ProRes file and use that, seems to work fine. And if I export to HEVC 10bit it stays as a 10 bit file so I can color grade. Now I just need to wait 7 hours to upscale a 22 second video, might need to buy an RTX 5090 :slight_smile:

3

I was just testing this on a Windows system and was not able to reproduce. Working on a test with a Mac option as well to try and replicate the situation for the devs.

Thanks for the update on the workaround you found as it might help someone else while this is being investigated.