I just ran it a few more times. I had a few occasions where the key decrypted the video, and a few where it didn't. I suspect that there must be some sync issue on the cloudfront distribution nodes, where some of them is serving old content with...
Thanks for sharing, but I just tried it also.
1. Needs VPN (403 errors on segment fetch otherwise)
2. With VPN, segments downloaded but provided key didnt decode the content
That's because it's a NBC News URL, not a Peacock URL
The "nbcsportspeacock" portion is just what they label their NBC Sports FAST channel on their streaming server since it initially launched as a Peacock exclusive, but have since expanded it...