Need help for decrypt video from mpd file

[X4ndu]

Hello to all,

I'm trying to decrypt a video with mp4decrypt, but I can't.

Here is my way:
1. Recover the video with YT-DLP, in 1080p with the following mpd file: https://ocsstreaming.akamaized.net/WESTWOR0401W0189476CJITS117950-E9C4%2F3BFCFBA7-487B...maf.cenc.X.mpd
2. Found the PSSH in the file: AAAANHBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAABQIARIQnE FtFYYaTmSfexRkB3PW1w==
3. Convert PSSH from hexa to base 64: 000000347073736800000000edef8ba979d64acea3c827dcd5 1d21ed00000014080112109c416d15861a4e649f7b14640773 d6d7
4. Get what I think is the KID: 9c416d15-861a-4e64-9f7b-14640773d6d7
5. Performed the following command to decrypt the video:

C:\Users\X4ndu>C:\Users\X4ndu\Downloads\Bento4-SDK-1-6-0-639.x86_64-microsoft-win32\bin\mp4decrypt.exe --key 9c416d15-861a-4e64-9f7b-14640773d6d7:000000347073736800000000edef8ba979d64acea3c827dcd51d21ed00000014080112109c416d15861a4e649f7b14640773d6d7 "C:\Users\X4ndu\Downloads\yt-dlp_win\Nouveau dossier\WESTWOR0401W0189476CJITS117950-E9C4.3BFCFBA7-487B-4A0E-8274-8BFA98B184D2.cmaf.cenc.X [WESTWOR0401W0189476CJITS117950-E9C4.3BFCFBA7-487B-4A0E-8274-8BFA98B184D2.cmaf.cenc.X].f7.mp4" decrypt.mp4

6. But it didn't work, so I tried without the dashes in the KID. I have a video only with artifacts.

What could I have missed?

Thanks for your help .

P.S. Would you know how to recover the subtitles with the .mpd file?

[basedcel]

the key is not the PSSH in hex, you need to make a widevine license request and obtain the key that way. and yes, KID goes without dashes.

[[ss]vegeta]

P.S. Would you know how to recover the subtitles with the .mpd file?

Maybe like this

ytdlp.exe --allow-u --write-sub -N 8 "https://ocsstreaming.akamaized.net/WESTWOR0401W0189476CJITS117950-E9C4%2F3BFCFBA7-487B-4A0E-8274-8BFA98B184D2%2FWESTWOR0401W0189476CJITS117950-E9C4.3BFCFBA7-487B-4A0E-8274-8BFA98B184D2.cmaf.cenc.X.mpd"

You should get an .mp4 that should open in Subtitle Edit.

[X4ndu]

Thank you for your answers (sorry for the delay). I will now try to find the right information to decrypt the files

[[ss]vegeta]

(sorry for the delay)

np it's only a few months

[biosdaddy]

(sorry for the delay)

np it's only a few months

Hi buddy, i have some problems with Udemy videos. I want to download a course from my account but cant find KeyID. Is there a way to talk with you? I can't pm to you.