user37499: I want to speed up a video clip in the order of 10x. However, I wasn't able to find a suitable software for that. I tried Movavi but the maximum speed up is 1000%. So I am not able to change the speed by 40x. Any recommendation for that?

user32599: Have you tried to use FFmpeg already? It's a very versatile command line tool.
Here is a dedicated page with a lot of examples on how to speed up/slow down a video with it.

37499: <p>I want to speed up a video clip in the order of 10x. However, I wasn't able to find a suitable software for that. I tried Movavi but the maximum speed up is 1000%. So I am not able to change the speed by 40x. Any recommendation for that?</p>
 32599: <p>Have you tried to use <a href="https://ffmpeg.org/ffmpeg.html" rel="nofollow noreferrer">FFmpeg</a> already? It's a very versatile command line tool.</p>
<p>Here is a <a href="https://trac.ffmpeg.org/wiki/How%20to%20speed%20up%20/%20slow%20down%20a%20video" rel="nofollow noreferrer">dedicated page</a> with a lot of examples on how to speed up/slow down a video with it.</p>
