If Feeds are Biss encrypted its only a matter of Recording a few 300mb .TS files and get good crypt8 from that recording no need at all to record 4GB .ts files thats overkill , lol's !
easy enuff then to get crypt8 with Coolbri Rainbow Tools
Hard part is figuring which chain table and plain type required in order to get the Control Word [ CW ] a.k.a Biss key from the crypt8 .
But 99.9% of the time if you have a good crypt8 there will always be someone on this fine forum will always for sure find key in no time at all thats what makes this forum the very best on the net ...lots and lots of real helpfull experienced members here you'll find .
Good luck : )