Video Export Stuttering in Topaz Video AI

Video AI General
1

Hi everyone,

I’ve been using Topaz Video AI for a few weeks, and I noticed a slight issue when exporting videos. After the export is complete, there seems to be stuttering in the final video, especially during fast movements or transitions.

I’ve tried adjusting the export settings, but the problem still occurs. Has anyone else experienced this? Any advice on settings or troubleshooting steps that might help fix this?

Thanks in advance for any help!

2

What video player app are you using to watch the video back with? This sounds like a judder issue with the frame rate, but could also be a compression or bitrate issue.

Generally, increasing the frame rate of playback for the export video can help reduce this.

3

Yes - I get this too when using denoising preset on 8k video. VideoAI (7.1.1) - I cant upgrade because then I get spammed about moving to Subscription model at every launch :frowning:

4

What video app are you using to view the exported video in an 8k resolution?

5

QuickTime Player but also confirmed in FinalCut when stepping through the frames. Can post links to the clip in question if helpful.

6

I asked Grok to use FFMPEG and do a comparison of the original and Topaz videos and Grok produced this typically verbose response:

Property Original Value Processed Value Notes
Codec prores prores Same
Type video video Same
Width 7680 7680 Same (8K equirectangular, likely VR/360° based on spherical side data)
Height 3840 3840 Same
Pixel Format yuv422p10le yuv422p10le Same (10-bit color)
Avg Frame Rate 30000/1001 (~29.970 fps) 30000/1001 (~29.970 fps) Same average, but see below
Real Frame Rate 30000/1001 (~29.970 fps) 2550000/89089 (~28.625 fps) Mismatch! Processed is non-standard and lower. This is a red flag for VFR (variable frame rate) issues in Topaz. FFmpeg even warns: “Using non-standard frame rate 30000/1048” in the processed log.
Duration 8.908900 s 8.908900 s Same total length
Bit Rate 2078196212 kb/s (~2.08 Gbps) 1939350687 kb/s (~1.94 Gbps) Processed is slightly lower (expected after denoising/compression)
Frame Count 267 255 Major issue! 12 frames dropped in processed (267 - 255 = 12). At 29.97fps, this is ~0.4s worth of content missing, but stretched over the same duration—causing stutters/skips.
  • Implication: The processed video (Nyx v3 output) has fewer frames but the same duration, meaning Topaz effectively lowered the frame rate irregularly. This is a classic sign of a bug in Topaz’s frame handling during denoising, where it drops frames (intentionally or not) to “optimize” but doesn’t adjust timings properly. Since you see stutter at a specific point in FCP (frame-by-frame), the drops aren’t uniform—they’re likely clustered there, creating visible jumps.
1 Like
7

Are you able to share the original and exported video samples with us for review?

help@topazlabs.com