Not sure if it helps any but URL Helper spits out playable urls, not sure how to transform that to OV though.
URL Helper - Find URL, Get URL of MMS, RTSP, Capture RTMP URL, Sniff stream URL, Get Link of FLV, MP4, MP3, WMV, RM, ...
Page: FAIL Nation: Hey, Let Me Try FAIL - EPIC FAIL Funny Videos and Epic Fail Funny Pictures
Video: http://failblog.a.ec.viddler.com/fa...b6b42537e43e79720d1b&ec_rate=181&ec_prebuf=10
Page: Fan Sing-A-Long FAIL - EPIC FAIL Funny Videos and Epic Fail Funny Pictures
Video: http://failblog.a.ec.viddler.com/fa...b6b42537e43e787b9c01&ec_rate=181&ec_prebuf=10
I know what the playable urls are, just not how to calculate them.
However, I stumbled on some javacode that does the trick (thx jdownloader), and trying to get that working
Edit: Argh, after a lot of time converting/debugging java to c#, it appears that the java code itself didn't work