2 video players with the formats they claim to play....
playable - avi, xvid, mov, mp4 & flv
Video Stream - mp4, mov, avi, mkv, divx, xvid, flv, wmv, 3gp
Yes, the Wi-Drive has its' own App which IS loaded and running. The Wi-drive too is powered up and connected thru WiFi.
Click on an avi and "Open in" and neither "playable" nor "Video Stream" is offered for selection. I've also tried with an "mkv" file, "video Stream" is again NOT offered to open in....
Both these players are free so anyone can check them out.
Bit difficult to test if you don't have a Wi-Drive though
I wouldn't swear to it but I don't think iTunes will sync with these players either.
I've tried with "playable" passive AND active with no success.