I have this mkv with .ass subs I made myself with Ageisub. The problem is when I use my go to app Handbreak to convert it into an mp4 the fade effect on the .ass subs gets dropped. Instead of fading they just disappear like regular subs. I know I can do fade subs/tiles in iMovie, but I'd like to figure this out since I'm likely to come across other mkvs with styled subs (fades or whatever) that I haven't made myself and would like to know a good way to convert these while keeping the effects. Ideas? Suggestions? I asked in another forum and they all mentioned Windows programs despite my saying I ran a Mac. Thus, I ask here. Thanks in advance!