For me it is working very well. But IMO you should try "Video Enhancer AI" or "Topaz Video AI v3.3.3" or "HitPaw Video Enhancer".
They are way better than AVCLabs.
I will try to post "Topaz Video AI v3.3.3" + "HitPaw Video Enhancer" cracked version soon I am a bit busy rn.
Here is cracked version for "DVDFab Video Enhancer AI" : https://www.nulled.to/topic/1510595-%E2%98%85new-dvdfab-video-enhancer-ai-v1033-crack-%E2%9C%94clean/
Thanks but I have tried some similar AI video enhancer software. Including:
Topaz Video AI 3.3.1 (crack)
AVCLabs Video Enhancer AI 3.1.0 (trial)
DVDFab Video Enhancer AI 1.0.3.3 (crack)
And some other software.
I tried with 2 old videos with very low quality, only Topaz and AVCLabs gave positive results. Although Topaz generates very large video.
For example, with DVDFab, the first video cannot be read by the software; the 2nd video is changed color, i try to change the AI model for the 2nd video and try again, the software freezes at 11-12%.