I can watch some 720p video files but 1080p files. Are there different types of HD files? Eg the ones that are not working are named like "1080p BluRay x264 ACC" or something. I'm assuming to make them play the only thing I need is the right codecs? I've downloaded tons of codec packs and they don't work so maybe I just need a specific pack? When I play file it says "Opening" for a while then goes "Unplayable content, this is not supported". Help would be appreciated.