Three questions about capturing streaming video

[jimdagys]

1) I know they (streaming video providers) don't want you to capture streaming video, but since it can be watched in real time, how (generally) do they make it so difficult to capture?
2) I downloaded the latest trial of GetFLV (recommended to capture streaming video). Right on the GetFLV front page was Hulu, but I was unable to capture any various Hulu videos that I tried. Why couldn't I capture the videos? Is the technology changing so fast that the software can't keep up with the technology?
3) I successfully used GetFLV to capture the show "60 Minutes". ( I couldn't get the old standby Orbit to work.) It captured the entire 42 minute show (no ads were captured on the default setting) in about 3 minutes. In this case, it seems to me the stream provider would know that I am not watching the show in "real time", so why don't they use this fact to disallow the capture?

[Brad]

One issue is that Flash has an optional encrypted protocol and they started going after software authors who reverse engineered it.

http://en.wikipedia.org/wiki/RTMPE
http://en.wikipedia.org/wiki/RTMPS
http://blogs.adobe.com/ktowes/2008/09/encryption_and_streaming_media_1.html

The streams that you can capture use regular RTMP.

[jimdagys]

Thanks for the info.
I checked around a bit and it seems that GetFlv is a scam and should not be recommended:
http://stream-recorder.com/forum/getflv-user-reviews-user-feedback-suggestions-t8862.html
So it seems that the only way to "capture" these encrypted videos is with a screen capture program, which is never as clear as a true capture.