It's a known QuickTime issue unfortunately. One of the recent updates changed the way the app handles anamorphic files.
Quote:
Originally Posted by zachmo826 /forum/post/12906906
Well that sucks, is there any way to go back to a old version so I don't have this problem anymore?
Quote:
Originally Posted by zachmo826 /forum/post/12928428
Last night i tried to encode a movie in mkv, but once it was done each time i tried to click through the movie to see quality at different points, it would take forever, like it was scanning from the beginning of the file to get to the point i told it to go to. is there any way around that?