Just about any ripped format with a suitable Media Foundation or DirectShow decoder works. The native W7 decoders handles the majority of the formats out there with the exception of MKVs, for MKV you’ll need a MKV splitter. DivX’s MKV Media Foundation decoder can also be used.
Though some video file types might not be supported on a Media Center Extender. For example, Extenders don’t support AVCHD files or Apple QuickTime files. The playback functionality will also be inconsistent for files being transcoded versus natively played back on the device.
