The wmv file sample here is sample with WMVA codec (WARNING: it is S/M porn) and DLL file with the codec. I copied other dmo codec from codecs.conf and created one below (with GUID found in registry) - it accepts the stream but no video is shown. Tested on Linux, MPlayer 1.0pre5. devik@cdi.cz videocodec wmvadmo info "Windows Media Video Adv DMO" status working fourcc WMVA driver dmo dll "wmvadvd.dll" guid 0x03be3ac4, 0x84b7, 0x4e0e, 0xa7, 0x8d, 0xd3, 0x52, 0x4e, 0x60, 0x39, 0x5a out YV12 ;,I420,IYUV out YUY2,UYVY out BGR32,BGR24,BGR16 ;,BGR15