Mp4decrypt syntax

[dzigelbaum]

Hello

It seems like i got the correct set of KIDs and KEYs.

What's the correct syntax?

mp4decrypt.exe --key (17477b55c62041d4b8f298909fc5752)bb0f83a278307cf2e32a0e574fc60b89)

What should I put as sourcefile and destination file? How do I download the video and the audio?

[lomero]

see your other old post...

[mister_ nex]

solution from Bento4_SDK_documentation :

7.6 Mp4Decrypt
Provided the relevant set of keys are produced, Mp4Decrypt repackages an encrypted MP4 file into a cleartext MP4 file.


usage: mp4decrypt [--key <n>:<k>] <input> <output>
--show-progress: show progress details
--key: <n> is a track index, <k> a 128-bit key in hex
(several --key options can be used, one for each track)


where <input> is your encrypted MP4 file, and <output> is the corresponding cleartext MP4 file. Optionally, the --show-progress parameter will give you a verbose update on the decryption process. The key parameter is specified using a track index and a 128-bit key in hexadecimal characters. Several key options can be used, given that each track may have its own key.


Example:
mp4decrypt --key 0:000102030405060708090a0b0c0d0e0f --show-progress my_encrypted_file.mp4 my_decrypted_file.mp4


P.S.How to make spoiler in forum text?[spoiler]text[/spoiler] not worked

[notaghost]

like:

mp4decrypt.exe --key <KID>:<KEY> <input file> <output file>

replace <KID> with KID you get with keys or from mpd
or if you want you can add <ID> of the track instead too

mp4decrypt.exe --key <ID>:<KEY> <input file> <output file>

https://imgur.com/yr1X2WC
or if you want you can try google shaka-packager
https://github.com/google/shaka-packager
try it like this

shaka-packager.exe input=<input video file>,stream=video,output=<output video file>.mp4 input=<input audio file>,stream=audio,output=<output audio file> --enable_raw_key_decryption --keys label=0:key_id=<1st KID>:key=<1st KEY>,label=1:key_id=<2nd KID>:key=<2nd KEY>,label=2:key_id=<3rd KID>:key=<3rd KEY>

replace everything within < >
shaka packager seems to be faster. it will tell you exact error But there's no progressbar.

[rajhlinux]

I have a decrpytion key like this:

d4d019341ddd5d60bewdw60e6e877ebd:87651ddwdw5267665 2dw14815c64f5d9

It has a colon at the center...

does it counteract with the bento tool?

because now it will have two colons.

Thanks

[rajhlinux]

Alright I seem to got it working:

I use this program called "yt-dlp".

This is the command I enter on CMD:

yt-dlp --allow-unplayable-formats --force-generic-extractor "https://www.udemy.com/assets/16986082/encrypted-files/out/v1/c16e00cbe8e74fd883cd35ee9a33c7bf/06c8dc12da2745f1b0b4e7c2c032dfef/842d4b8e2e014fbbb87c640ddc89d036/index.mpd?token=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1Ni J9.eyJwYXRoIjoib3V0L3YxL2MxNmUwMGNiZThlNzRmZDg4M2N kMzVlZTlhMzNjN2JmLzA2YzhkYzEyZGEyNzQ1ZjFiMGI0ZTdjM mMwMzJkZmVmLzg0MmQ0YjhlMmUwMTRmYmJiODdjNjQwZGRjODl kMDM2LyIsImV4cCI6MTY0ODI4NjIxNX0.wReSM4Q72bdTgnD7X Gf8REQ3-QuDdXnVg0gjUOX1FrU&provider=cloudfront&v=1" -o output.mp4

Need to use "--force-generic-extractor" to get it working else it wont download anything.


Then I tried decrypting the video and audio using "shaka-packager".

This is the command I enter on CMD:

shaka-packager.exe input=C:\Users\Admin\Downloads\udemy\output.f10.mp 4,stream=video,output=C:\Users\Admin\Downloads\ude my\decrypttt.mp4.mp4 input=C:\Users\Admin\Downloads\udemy\output.f20.m4 a,stream=audio,output=C:\Users\Admin\Downloads\ude my\decryptt_audio.m4a --enable_raw_key_decryption --keys label=0:key_id=75175f4a6e1c40a597273c3b41339246:ke y=d4d019341ba95d60be4b560e6e877ebd:87651d63fa52676 672a714815c64f5d9


However both video and audio are not decrypted (same goes for using "bento mp4decrypt")...

This is the CDM I used: http://getwvkeys.cc/

Here is the ".mpd" file:
https://pastebin.com/UwwHJhTF

Here is the decrypt key: aefc537bda2a545a80d72d93824ffcc9:32fccf818a6e210d8 ef1acec269deb6d

Here is the KEY ID: 75175f4a6e1c40a597273c3b41339246

Here are the encrypted video and audio file to inspect/test:
https://drive.google.com/drive/folders/1oR9kn3yTN6jRBo1HCvBvx-jH0GLOaQkP?usp=sharing

Thanks