Hi there,
well, I checked out the doc file, and for the very least can give this a try.
What I understand from the doc file is you need to add the dash video decryptor to ffmpeg lib :)
let me know if you mean otherwise?
Also, no issues with the payment procedure, but I would need assurance about the payment as in where the work gets delivered and then the payment promptness is gone.
Ping me on chat if you do not have any issue with my proposal, we can have a discussion and thought sharing!
Cheers!