There is a forum thread that says this problem is fixed, but using version 0.12.1 I get the same error:
http://sourceforge.net/projects/mediatomb/forums/forum/440751/topic/3437844
ERROR: Failed to get URL for video with id (step 1)OJ4bIQULFhs
I have a device that can play .flv, and I tried both format="mp4" and "flv", same problem. So, looks like there is still a RSS feed parser problem in 0.12.1.
Me too. Ubuntu 12.04.4 LTS. MediaTomb 0.12.1 (from DEB package).