Let me tell you about the TS files required to find biss keys with :
In the first place you MUST TURN OFF ANY EMULATOR you are using.
If you are watching a channels with the emulator,then you find a biss encrypted channel,YOU CAN NOT RECORD RIGHT AWAY.
You must be sure you turn off all emulators and change channels couple times.
If you record with the emu ON,the recording will be corrupt and NO KEYS WILL BE EVER FOUND.
I would much appreciate you add this to the sticky HOW TO RECORD TS FILE.
I would like to help find biss keys,but I do not want to waste 1 month over a TS file that is corrupted.
You must guarantee the TS file was recorded without any emulator running.
If possible,you record a ts file for a channel you have keys for FIRST,to check that in fact the TS file is correct,then you record the new biss channel after that.