To everyone asking about what codecs are supported and what are not. I'm not an upstream MPlayer developer and I don't know everything MPlayer is now built in default configuration, some codecs may be not compiled in, some may be buggy. I even did not hear about some of these codecs at all and do not have video samples to test if they work with MPlayer. My personal priority right now is to ensure that MPlayer is good at playing converted video with full fps and high quality. Once this milestone is reached (and we are very close to it), I may switch to some other tasks like ensuring more different and exotic codecs support or attempt at getting some nonconverted video played more or less acceptable. Anyway, as it is written in my signature, feel free to join If you are interested in some codec support, feel free to investigate how to enable it, fix any bugs it may have on arm architecture and submit a patch. Adding more developers to a project is always welcome.