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Can't decrypt mp4(DRM)

(http://stream-recorder.com/forum/showthread.php?t=23171)

shadowolder 06-17-2017 07:29 AM

Can't decrypt mp4(DRM)


 
Hi guys! I found cool software bento4_com/ (mp4decrypt), which can decrypt mp4 drm protected files, but i'm getting error...

When i'm typing
Code:

mp4decrypt.exe ddp-192.mp4 ddp-192_final.mp4 --key 58b58c58-400b-11e7-a009-842b2b5247fa
I'm getting
Code:

ERROR: invalid argument for --key option

My manifest.mpd file is https://pastebin.com/m887CZHe
And here is file info of my encrypted mp4 file:
Code:

File:
  major brand:      iso6
  minor version:    1
  compatible brand: mp42
  compatible brand: dash
  compatible brand: msdh
  compatible brand: msix
  compatible brand: iso6
  compatible brand: avc1
  compatible brand: isom
  fast start:      yes

Movie:
  duration:  0 ms
  time scale: 48000
  fragments:  yes

Found 1 Tracks
Track 1:
  flags:        7 ENABLED IN-MOVIE IN-PREVIEW
  id:          1
  type:        Audio
  duration: 0 ms
  language: und
  media:
    sample count: 0
    timescale:    48000
    duration:    0 (media timescale units)
    duration:    0 (ms)
    bitrate (computed): 192.000 Kbps
    sample count with fragments: 78620
    duration with fragments:    120760320
    duration with fragments:    2515840 (ms)
  Sample Description 0
    [ENCRYPTED]
      Coding:        enca
      Scheme Type:    cenc
      Scheme Version: 65536
      Scheme URI:
    Protection System Details:
    [schi] size=8+32
      [tenc] size=12+20
        default_isProtected = 1
        default_Per_Sample_IV_Size = 8
        default_KID = [58 b5 8c 58 40 0b 11 e7 a0 09 84 2b 2b 52 47 fa]
    Bytes: 000000000000000100000000000000000002001000000000bb8000000000000d646563330600200f000000005073696e660000000c66726d6165632d33000000147363686d0000000063656e630001000000000028736368690000002074656e63000000000000010858b58c58400b11e7a009842b2b5247fa
    Coding:      ec-3 (Dolby Digital Plus (Enhanced AC-3))
    Sample Rate: 48000
    Sample Size: 16
    Channels:    2

What i am doing wrong? How i can decrypt it to normal file?

shadowolder 06-18-2017 07:00 AM

Re: Can't decrypt mp4(DRM)


 
Anybody? Please.

ihryjfbd 06-22-2017 09:08 AM

Re: Can't decrypt mp4(DRM)


 
Do the other commands work?
--show-progress

mp4decrypt [options] <input> <output>

Try
mp4decrypt.exe --key 58b58c58-400b-11e7-a009-842b2b5247fa ddp-192.mp4 ddp-192_final.mp4

foultayeb 06-22-2017 12:32 PM

Re: Can't decrypt mp4(DRM)


 
Quote:

Originally Posted by ihryjfbd (Post 92212)
Do the other commands work?
--show-progress

mp4decrypt [options] <input> <output>

Try
mp4decrypt.exe --key 58b58c58-400b-11e7-a009-842b2b5247fa ddp-192.mp4 ddp-192_final.mp4

how to use this commande ?
when i enter to the mp4decrypt it didn't open, how to open it ?

ihryjfbd 06-22-2017 05:24 PM

Re: Can't decrypt mp4(DRM)


 
Quote:

Originally Posted by foultayeb (Post 92213)
how to use this commande ?
when i enter to the mp4decrypt it didn't open, how to open it ?

You can't open it, it doesn't have a frontend as it's a commandline app to be used within the dos command line aka cmd.exe

foultayeb 06-22-2017 08:48 PM

Re: Can't decrypt mp4(DRM)


 
I had the same problem hhhhhhhhhh
ERROR: invalid argument for --key option

foultayeb 06-22-2017 09:25 PM

Re: Can't decrypt mp4(DRM)


 
I found the solution but the mp4decypt don"t work :mad:
Example:
mp4decrypt --key 0:000102030405060708090a0b0c0d0e0f --show-progress my_encrypted_file.mp4 my_decrypted_file.mp4

ihryjfbd 06-23-2017 12:46 AM

Re: Can't decrypt mp4(DRM)


 
What info does https://www.bento4.com/documentation/mp4info/
display?

foultayeb 06-23-2017 02:46 AM

Re: Can't decrypt mp4(DRM)


 
Quote:

Originally Posted by ihryjfbd (Post 92224)

The file don't decrypt at all still the same

tuongraokc 06-24-2017 02:11 AM

Re: Can't decrypt mp4(DRM)


 
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