Darnun Wrote:Well I only have avi and MKVs (including 3D) and I know it plays both of those so I am good for now at least.
as noobnas pointed out correctly, both avi and mkv are considered "container formats", meaning they're just a container for the actual encoded file (that can be encoded in a variety of codecs).
while it is true that the needed support from a device starts with the container itself (no point supporting the within used codec by the device if it won't even open the container/file itself in the first place), the real decision whether the file can be played back is, in the end, made by the codec.
proprietary solutions (that actually, in a way, includes the Apple TV2 etc) have always shown in the past to , at some point, be missing the ability to decode a kind of media that becomes popular (try getting some very old sigma chip to decode current content ... good luck with that).
if you want to make sure u're getting something that is going to work for a great length of time, get a small nettop (Zotac ZBOX AD10 comes to mind ... insanely powerful little thing that is).