Do MKV files Have AR Flags?

[wulf109]

Playing MKV files on my BlueRay standalone and some play at the correct 2:35 AR but others play full height with stretched image. Others won't play at all.

[poisondeathray]

MKV supports display aspect ratio, but your blu ray player might not (probably doesn't)

Most blu ray players will only accept 1:1 square pixels and full frame sizes e.g. 1920x1080, 1280x720 . So a cropped MKV will usually not play unless you add borders

There can be many many reasons for a file not playing, including resolution, incompatible encoding settings, buffer settings