Movavi won't load full video?

Question

YouTube

Good afternoon. I have a question like this. The video that I upload to the editor is cut off. That is, the video is 37 minutes long, I load it into the editor, it loads as 37 minutes, but in fact it is a very stretched first 6 minutes and the rest of the video simply does not. Same thing with conversion. Uploading video for 37 minutes. but I get 4 minutes of video stretched to 37 Is this corrected? Reinstalling didn't help.