I recently had a problem with wmv not working on Shotcut for reverse or sub clip. This will be fixed in 19.04.x.
Reverse and sub clip works, but when I choose to convert to MP4, it has no audio. Appears as white on my screen, but when I hit play, everything is fine except audio.
When I open it in windows media player, no audio.
In Shotcut, very fuzzy audio.
MP4 to MOV is fine, but just takes up a lot more memory.
Ask me for any of the video sources if you’d like.