At the moment, you can search forward, search backwards or do a time search for: * WMV and MPEG-2 files with Windows Media Player, Twonky, or TVersity * AVI and MKV files with Windows Media Player, Twonky and TVersity may also work, however, the search forward and backwards speeds are limited Philips is continually adding new codecs so that you can watch more video formats. You can use free video conversion tools from the Internet to re-encode your video to a supported format.