Hi
I don't use .mkv files myself but downloaded a couple of free 1280 x 720 test MKV files, 10 mb and 30 mb from here...
https://www.sample-videos.com/
These files played perfectly correctly in VLC.
When loaded into VP (Version 6.10 ) both files appeared to lose about 7 seconds or so at the start and just showed a still frame from about 7 seconds in. During this pause both clips played the audio from the missing section then the video started to play correctly. Sound was a little low but the glitch at the start to my mind was a more important bug.
Anybody verify this?
Needs looking at!
Nat