Supported video providers as of version 2.x are:

1. Google Video International
2. Google Video Australia
3. Google Video Deutchland (Germany)
4. Google Video Espana (Spain)
5. Google Video France
6. Google Video Italia (Italy)
7. Google Video Nederland (The Netherlands/Holland)
8. Google Video Polska (Poland)
9. Google Video U.K. (United Kingdom/Great Britain)
10. Yahoo! Video
11. YouTube
12. iFilm
13. Vimeo
14. Metacafe
15. Bolt (for Audio & Video)
16. Bofunk
17. Break
18. Jumpcut
19. Current TV
20. Revver
21. College Humor
22. MyVideo.de
23. Sevenload.de
24. ClipFish.de
25. Stickam
26. Krazyshow
27. GameTrailers.com
28. MySpace Video Code
29. FreeVideoBlog
30. Streetfire Videos
31. Crossroad Videos
32. Dropshots
33. UUme (for chinese speaking users)
34. Tudou.com (for chinese speaking users)
35. Seehaha (for chinese speaking users)
36. QuXiu (for chinese speaking users)
37. WangYou.com (for chinese speaking users)
38. Mofile TV (for chinese speaking users)
39. Biku.com (for chinese speaking users)

These providers offer content in various formats, but most of them use Flash Video technology.