internal

README

pssh

1. MPD PSSH
2. MPD key ID
3. init PSSH
4. init key ID

one step

we cant do it in one step, because CTV only has PSSH in the init file, and Rakuten only has PSSH in the MPD

two steps

1. MPD key ID
2. init key ID

the above fails because Rakuten needs content ID

1. MPD PSSH
2. init PSSH

the above works