having hard times with Headers in "vod.delivery.roku.com"

[user10thousand]

i have downloaded the separated audio and video from this free film (us vpn)
https://therokuchannel.roku.com/watch/58bca992b4265b9cb6f7de1aaead43f9

i have managed to get the License by filter seacrh "mpd" in network and and PSSH from console (not sure if it is correct)

https://vod.delivery.roku.com/929cb50445754966b1c652f320ede2f9/aaf72928242741a6ab8d0df...anguage:unused

AAACenBzc2gAAAAAmgTweZhAQoarkuZb4IhflQAAAlpaAgAAAQ ABAFACPABXAFIATQBIAEUAQQBEAEUAUgAgAHgAbQBsAG4AcwA9 ACIAaAB0AHQAcAA6AC8ALwBzAGMAaABlAG0AYQBzAC4AbQBpAG MAcgBvAHMAbwBmAHQALgBjAG8AbQAvAEQAUgBNAC8AMgAwADAA NwAvADAAMwAvAFAAbABhAHkAUgBlAGEAZAB5AEgAZQBhAGQAZQ ByACIAIAB2AGUAcgBzAGkAbwBuAD0AIgA0AC4AMAAuADAALgAw ACIAPgA8AEQAQQBUAEEAPgA8AFAAUgBPAFQARQBDAFQASQBOAE YATwA+ADwASwBFAFkATABFAE4APgAxADYAPAAvAEsARQBZAEwA RQBOAD4APABBAEwARwBJAEQAPgBBAEUAUwBDAFQAUgA8AC8AQQ BMAEcASQBEAD4APAAvAFAAUgBPAFQARQBDAFQASQBOAEYATwA+ ADwASwBJAEQAPgBhAHUAcgBSADYAYQBrAGwAbwBCAEMANwBPAG kAOQBLAFUAcgB4AEoAdwBnAD0APQA8AC8ASwBJAEQAPgA8AEwA QQBfAFUAUgBMAD4AaAB0AHQAcAA6AC8ALwBwAHIALgBkAGUAdg AuAGUAeABwAHIAZQBzAHMAcABsAGEAeQAuAGMAbwBtAC8AcABs AGEAeQByAGUAYQBkAHkALwBSAGkAZwBoAHQAcwBNAGEAbgBhAG cAZQByAC4AYQBzAG0AeAA8AC8ATABBAF8AVQBSAEwAPgA8AC8A RABBAFQAQQA+ADwALwBXAFIATQBIAEUAQQBEAEUAUgA+AAAAAE Nwc3NoAAAAAO3vi6l51krOo8gn3NUdIe0AAAAjCAESEOnR6mol qRCguzovSlK8ScIaCmludGVydHJ1c3QiASo=

BUT the problem is i can't get the headers working, it says something about "access-control-allow-origin"
i have always encrypted files correctly from other sites but only after hard times managing the headers
i'm still a newbie and can't read the headers right so i'm always randomly deleting some lines and words and resending the request...
and usually it worked eventfully and i get the keys, but this time i've spent more than an hour dealing with this one, it's my first time with roku
please help me getting the keys for this movie and show me what did i do wrong, many thanks.

[ElCap]

correct pssh is inside the mpd.

the license url is not the manifest url (ie. not mpd)
filter for "wv"

[pauli3]

roku just uses generic/default headers. you need the correct pssh and license url to get the keys.

[larits]

The mpd is the media manifest, not the license. If you open it in a text editor, you'll find the correct pssh inside.

AAAAQ3Bzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAACMIARIQ6dHqaiWpEKC7Oi9KUrxJwhoKaW50ZXJ0cnVzdCIBKg==

The license is the one with "wv.service.expressplay"

https://wv.service.expressplay.com/hms/wv/rights/?ExpressPlayToken=xxxx

The headers are generic:

headers = {
    'Accept': '*/*',
    'Accept-Language': 'en-US,en;q=0.5',
    'Connection': 'keep-alive',
}

--key e9d1ea6a25a910a0bb3a2f4a52bc49c2:47ecd98af7af01ae9fa32e49f74fda9d

[user10thousand]

All good, thank you so much to everyone for your help, i so much appreciated.