Long MPD livestream recording will not decrypt properly using mp4decrypt

[Chox]

Trying to use mp4decrypt to decrypt a video stream of MSNBC from Peacock. it's 5 hour long and it is the right key as far as I am aware as when playing the file back in pot player the first frame is shown. I also made a small recording right after to test mp4decrypt and it does the same thing, only plays the first frame and will not playback the video, with a time code that states it's 138 hours even tho it's only 50 something seconds, same thing with the five hour record.

I was able to fix the playback issue with the small recording by dumping it into mkvtoolnixgui, but it does not work with the five hour recording making it unplayable at all, with mediafile showing even less information.

The stream was captured using N_m3u8DL-RE

Command to capture stream. N_m3u8DL-RE -M format=mp4 --live-real-time-merge "https://live-oneapp-prd.akamaized.net/Content/CMAF_OL1-CTR-4s/Live/channel(msnbc)/master.mpd"

(Did not decrypt live while capturing. Trying to decrypt offline now.)

Even with the "fixed" short file along side the broken short file and long file recording it still shows as "encrypted" and when putting it into avidemux it just shows up as a black screen with what looks like tv noise at the bottom of the frame.

Here is the mpd link to the stream and the key in question to test for yourself. https://live-oneapp-prd.akamaized.net/Content/CMAF_OL1-CTR-4s/Live/channel(msnbc)/master.mpd 7fbd8a75e83336cdaba616c677f3bae9:936b15f1bfeb31c58 1d16ab2ab83cd65

This is the first time capturing mpd drm protected livestreams so I'm not sure if I did something wrong. If needed I can upload the full recording for y'all to look at.

I'm trying to find alternatives to mp4decrypt but trying to use Shaka-packeger seems to have some sort of argument interpretation issues with the usage examples in the drm decryption software list thread on this exact forum (I have renamed the command to the name of the actual file the binary was named which was not "shaka-packeger".) And I just have not been able to find a way to get ffmpeg to work either. Again I'm sure I am probably doing something wrong so feel free to inform in any errors or misunderstandings I am most likely making.

Here is the following command lines I am using.

For mp4decrypt

mp4decrypt --key 7fbd8a75e83336cdaba616c677f3bae9:936b15f1bfeb31c58 1d16ab2ab83cd65 --show-progress "D:\MSNBC_TO_DECRYPT\master_2024-01-23_19-23-42.mp4" "D:\MSNBC_TO_DECRYPT\DECRYPTED\master_2024-01-23_19-23-42.mp4"

For ffmpeg

ffmpeg -i "D:\MSNBC_TO_DECRYPT\master_2024-01-23_19-23-42.mp4" -encryption_scheme cenc-aes-ctr -encryption_key 936b15f1bfeb31c581d16ab2ab83cd65 -encryption_kid 7fbd8a75e83336cdaba616c677f3bae9 "D:\MSNBC_TO_DECRYPT\DECRYPTED\master_2024-01-23_19-23-42.mp4"

For Shaka

packager-win-x64 in="D:\MSNBC_TO_DECRYPT\master_2024-01-23_19-23-42.mp4",stream=video,output= "D:\MSNBC_TO_DECRYPT\DECRYPTED\master_2024-01-23_19-23-42.mp4" --enable_raw_key_decryption --keys key_id=7fbd8a75e83336cdaba616c677f3bae9:key=936b15 f1bfeb31c581d16ab2ab83cd65

Either way this is my first post btw, so uh hey ya :3

Any response is appreciated.

[stabbedbybrick]

To get a decrypted and properly muxed .mp4 file:

N_m3u8DL-RE "https://live-oneapp-prd.akamaized.net/Content/CMAF_OL1-CTR-4s/Live/channel(msnbc)/master.mpd" --key "7fbd8a75e83336cdaba616c677f3bae9:936b15f1bfeb31c581d16ab2ab83cd65" --mp4-real-time-decryption --live-real-time-merge -M --format=mp4 --save-name "msnbc"

If you want to specify how long to record, just add:

--live-record-limit "HH:mm:ss"

[Chox]

To get a decrypted and properly muxed .mp4 file:

N_m3u8DL-RE "https://live-oneapp-prd.akamaized.net/Content/CMAF_OL1-CTR-4s/Live/channel(msnbc)/master.mpd" --key "7fbd8a75e83336cdaba616c677f3bae9:936b15f1bfeb31c581d16ab2ab83cd65" --mp4-real-time-decryption --live-real-time-merge -M --format=mp4 --save-name "msnbc"

If you want to specify how long to record, just add:

--live-record-limit "HH:mm:ss"

Thank you for the advice and I will keep these arguments for the command in mind. None the less I am looking to decrypt a recording I have already made that is in it's original encrypted form. Any help on getting a usable decrypted video file is appreciated.

[DPyro]

N_m3u8DL-RE "https://live-oneapp-prd.akamaized.net/Content/CMAF_OL1-CTR-4s/Live/channel(msnbc)/master.mpd" --live-real-time-merge --live-record-limit 00:05:00  -M --format=mp4 --key 7fbd8a75e83336cdaba616c677f3bae9:936b15f1bfeb31c581d16ab2ab83cd65 --use-shaka-packager

Save 5 minutes.

[Chox]

N_m3u8DL-RE "https://live-oneapp-prd.akamaized.net/Content/CMAF_OL1-CTR-4s/Live/channel(msnbc)/master.mpd" --live-real-time-merge --live-record-limit 00:05:00  -M --format=mp4 --key 7fbd8a75e83336cdaba616c677f3bae9:936b15f1bfeb31c581d16ab2ab83cd65 --use-shaka-packager

Save 5 minutes.

This recording worked! Thank you!
None the less is it possible to use this with an existing recording file that is still encrypted? I'm still trying to decrypt a recording I already have that has yet to be decrypted. How does one use shaka-packeger to decrypt the file? The command line and arguments on the decryption thread does not work for me. Issues with argument interpretation from what I can see.

[white_snake]

This recording worked! Thank you!
None the less is it possible to use this with an existing recording file that is still encrypted? I'm still trying to decrypt a recording I already have that has yet to be decrypted. How does one use shaka-packeger to decrypt the file? The command line and arguments on the decryption thread does not work for me. Issues with argument interpretation from what I can see.

Maybe if you show your command and its output, someone will be able to help.

[Chox]

Oddly enough I found this command to work for shaka packager.

Will post it here in case anyone else is having the same problem.

And if the decrypted file is still having time code issues throw it in mkvtoolnix gui and it should work in the end.

packager-win-x64 input="D:\MSNBC_TO_DECRYPT\master_2024-01-23_19-23-42.eng.m4a",stream=audio,output="D:\MSNBC_TO_DECRY PT\DECRYPTED\master_2024-01-23_19-23-42_DECRYPTED.eng.m4a" --enable_raw_key_decryption --keys label=0:key_id=7fbd8a75e83336cdaba616c677f3bae9:ke y=936b15f1bfeb31c581d16ab2ab83cd65

packager-win-x64 input="D:\MSNBC_TO_DECRYPT\master_2024-01-23_19-23-42.mp4",stream=video,output="D:\MSNBC_TO_DECRYPT\D ECRYPTED\master_2024-01-23_19-23-42_DECRYPTED.mp4" --enable_raw_key_decryption --keys label=0:key_id=7fbd8a75e83336cdaba616c677f3bae9:ke y=936b15f1bfeb31c581d16ab2ab83cd65