warrenpeace is right, mkv plays fine on computers. the problem is all other media devices that are incompatible with mkv. I'm sick of changing wires and outputs and moving my macbook pro from my desk to my A/V amplifier.

I want a good solution for watching x264 @ mkv on my PS3.

x264 is supported by PS3, the codec just needs to be moved from mkv to another container (e.g .vob), one that PS3 can playback. this app does the job. it would be nice if it was possible to mux in subs in that same process. Although I think it does nowadays, I haven't tried it in a while, I'm gonna give it a go some time this week. I'll then be streaming the .vob to my PS3 using MediaLink (http://www.macupdate.com/info.php/id/26673/medialink).