Your player can stream these codecs: * WMV (through WMP11, Twonky, TVersity) * MPEG2 (through WMP11, Twonky, TVersity) * MKV (through TVersity) Philips is continually adding new codecs so that you can stream more video formats. You can use free video conversion tools from the Internet to re-encode your video to one of the above formats.