After some head scratching today I have managed to determine that the new PID which is used to get the rtmp stream URLs is generated by the new, long PID in the format of ‘[64chars]~[64 chars]’ (as shown when get_iplayer runs in –verbose mode). The correct PID is generated by using some keys (in a var called ‘copyrighted_strings’) and AES crypto functions from this flash file: http://www.hulu.com/sec.swf (specifically function ‘dec’). If anyone feels like writing/porting this in perl please let me know.
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Feb 20 2009