Video format after export is different

[sismeiro]

Did you check the following threads to see if they can help you?

Audio Aligns With Video In Shotcut, But Goes Out Of Sync After Export

I would agree. That sounds exactly like the typical behavior of variable frame rates… I’d suggest the same as previous answers but adding to them with searching for the keywords, vsync async ffmpeg. These will point you in the right direction for converting your source to a constant frame rate.

Variable Frame-Rate video clips import with choppy video

I have the same problem, I don’t know what to do, I can´t understand anything about VLC or 1000 fps or the encorder. Please help

Also I don’t think bashing freeware will help you to get your problem solved. If Shotcut doesn’t work for you feel free to search a solution elsewhere.