I found a compromise solution to improve the video. I receive video sections from which I can make long movements through AI Hailuo with a length of 5 seconds (this is the site limit). It is this free limit (it is called a preview here on another site) of 5 seconds that you can download for free on the site x-design.com , any videos in terms of volume are improved there. But the first 5 processed seconds of them can be downloaded for free. The video quality is greatly improved, and it is these 5 seconds that are needed. Then you can glue a video clip from such improved pieces. I tried it - it works great, in any case, the image sharpness is pleasantly high-quality.