All the videos that I could watch were HTTP .mp4 streams, that can be easily recorded:
FAQ: How to record/download/capture/save Adobe Flash .FLV / .MP4 video HTTP stream from embedded player
For some videos I got the following message: "Sorry, this video is not available from your country".
Perhaps it's "Encrypted Real Time Messaging Protocol" (RTMPE or RTMPTE)
Replay Media Catcher doesn't support this protocol .
Regards