[popcornmix]

I have pinned down the last working build. It´s #105b.
I could watch the dvd without the MPEG-2 license key.
From #106, software decode is messed up.

Thanks.
Two plausible commits:
drop obsolete libmpeg2 (PR:8687, 3 commits, 138 files changed)
VideoPlayer: fix and cleanup ffmpeg sw deinterlacing (PR:8773, 1 commit, 4 files changed)

Now I think the first should be harmless. libmpeg2 was only used for menus, not the main feature, and that had been disabled in a previous PR. This PR was just removing dead code.
So, it's possibly deinterlace related. You can try disabling deinterlace and see if it helps (although deinterlace is quite expensive anyway so it probably will help).

When I originally supported deinterlace with software decode I found Yadif 2x was too hard, and had to limit it to Yadif 1x (i.e. 30fps output rather than 60fps).
Possibly that commit has changes the default deinterlace to Yadif 2x.