I want to know the answer to the following question:
What video formats are supported for UPnP streaming?
All the background I'm provided with is that "As the Xbox 360 uses a modified version of the UPnP AV protocol, some alternative UPnP servers such as uShare (part of the GeeXboX project) and MythTV can also stream media to the Xbox 360, allowing for similar functionality from non-Windows servers.". Is that enough to answer the question?
Answer: no