[Bug 93758] mpv + st/va: add motion adaptive deinterlacing v2 = segfault/assert

https://bugs.freedesktop.org/show_bug.cgi?id=93758

--- Comment #4 from Andy Furniss adf.lists@gmail.com --- (In reply to Andy Furniss from comment #3)

I can see there are more artifacts than with vdpau m/a deint - I was expecting them to use the same underlying code and so have the same artifacts?

After looking at more samples it seems that sometimes parts of one of the fields ends up with old content being displayed/not updated.

This is more than a few extra artifacts - it's buggy. With vdpau there were artifacts, but you wouldn't notice them watching normally (would need to pause/slow mo). Given the right input this is instantly noticeably corrupt.