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  1. Hi I have a 6.5 gb movie that has this drm encrypting it.

    I got it from an Mpeg-DASH stream that was encrypted.

    Anyway, I got the keys and the key id from the same site I got the video.

    I was using Bento4 mp4decrypt and it decodes the movie without displaying errors but then the final product is still encrypted.

    The key id looks like this:

    cenc:default_KID="562386c1-854b-11e6-89af-842b2b5247fa"

    and the keys look like this:

    widevine: "EDEF8BA9-79D6-4ACE-A3C8-27DCD51D21ED",
    playready: "9A04F079-9840-4286-AB92-E65BE0885F95"

    Here is the readme from mp4decrypt:

    Code:
    usage: mp4decrypt [options] <input> <output>
    Options are:
      --show-progress : show progress details
      --key <id>:<k>
          <id> is either a track ID in decimal or a 128-bit KID in hex,
          <k> is a 128-bit key in hex
          (several --key options can be used, one for each track or KID)
          note: for dcf files, use 1 as the track index
          note: for Marlin IPMP/ACGK, use 0 as the track ID
          note: KIDs are only applicable to some encryption methods like MPEG-CENC
      --fragments-info <filename>
          Decrypt the fragments read from <input>, with track info read
          from <filename>.
    And here is my syntax:

    Code:
    mp4decrypt.exe --key 562386c1-854b-11e6-89af-842b2b5247fa:EDEF8BA9-79D6-4ACE-A3C8-27DCD51D21ED --key 562386c1-854b-11e6-89af-842b2b5247fa:9A04F079-9840-4286-AB92-E65BE0885F95 input.mp4 output.mp4
    Thanks for anyone who takes a look Anyone know how to decrypt successfully?
    Quote Quote  
  2. Woohoo got the encryption to go away but the files are corrupt af and I can't listen or see them. Is there any way to get them to be viewable or am I hosed? From ffmpeg:




    Code:
    C:\Users\Office\Desktop\Pioneers>ffmpeg -i vid.mp4
    ffmpeg version 3.0.2 Copyright (c) 2000-2016 the FFmpeg developers
      built with gcc 4.9.3 (GCC)
      configuration: --enable-static --disable-shared --disable-ffplay --disable-ffs
    erver --enable-memalign-hack --enable-libmp3lame --enable-libass --enable-librtm
    p --enable-fontconfig --enable-libfreetype --enable-zlib --enable-libx264 --enab
    le-libspeex --extra-libs='-lrtmp -lpolarssl -lws2_32 -lwinmm -lexpat -lfreetype
    -lfribidi -lz' --arch=x86 --enable-runtime-cpudetect --enable-pthreads --target-
    os=mingw32 --cross-prefix=i686-w64-mingw32- --enable-gpl --pkg-config=pkg-config
     --bindir='/jenkins/workspace/FFmpeg - Win32/target'
      libavutil      55. 17.103 / 55. 17.103
      libavcodec     57. 24.102 / 57. 24.102
      libavformat    57. 25.100 / 57. 25.100
      libavdevice    57.  0.101 / 57.  0.101
      libavfilter     6. 31.100 /  6. 31.100
      libswscale      4.  0.100 /  4.  0.100
      libswresample   2.  0.101 /  2.  0.101
      libpostproc    54.  0.100 / 54.  0.100
    [h264 @ 02c71380] error while decoding MB 89 7, bytestream -26
    [h264 @ 02c71380] concealing 7280 DC, 7280 AC, 7280 MV errors in I frame
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'vid.mp4':
      Metadata:
        major_brand     : iso6
        minor_version   : 1
        compatible_brands: mp42dashmsdhmsixiso6avc1isom
        creation_time   : 2016-09-28 07:48:34
      Duration: 01:54:56.51, start: 0.041711, bitrate: 8067 kb/s
        Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080
     [SAR 1:1 DAR 16:9], 8064 kb/s, 23.98 fps, 23.98 tbr, 90k tbn, 47.95 tbc (defaul
    t)
        Metadata:
          encoder         : AVC Coding
    At least one output file must be specified
    
    C:\Users\Office\Desktop\Pioneers>ffmpeg -i sound.mp4
    ffmpeg version 3.0.2 Copyright (c) 2000-2016 the FFmpeg developers
      built with gcc 4.9.3 (GCC)
      configuration: --enable-static --disable-shared --disable-ffplay --disable-ffs
    erver --enable-memalign-hack --enable-libmp3lame --enable-libass --enable-librtm
    p --enable-fontconfig --enable-libfreetype --enable-zlib --enable-libx264 --enab
    le-libspeex --extra-libs='-lrtmp -lpolarssl -lws2_32 -lwinmm -lexpat -lfreetype
    -lfribidi -lz' --arch=x86 --enable-runtime-cpudetect --enable-pthreads --target-
    os=mingw32 --cross-prefix=i686-w64-mingw32- --enable-gpl --pkg-config=pkg-config
     --bindir='/jenkins/workspace/FFmpeg - Win32/target'
      libavutil      55. 17.103 / 55. 17.103
      libavcodec     57. 24.102 / 57. 24.102
      libavformat    57. 25.100 / 57. 25.100
      libavdevice    57.  0.101 / 57.  0.101
      libavfilter     6. 31.100 /  6. 31.100
      libswscale      4.  0.100 /  4.  0.100
      libswresample   2.  0.101 /  2.  0.101
      libpostproc    54.  0.100 / 54.  0.100
    [aac @ 006f1400] Sample rate index in program config element does not match the
    sample rate index configured by the container.
    [aac @ 006f1400] Remapped id too large
    [aac @ 006f1400]  is not implemented. Update your FFmpeg version to the newest o
    ne from Git. If the problem still occurs, it means that your file has a feature
    which has not been implemented.
    [aac @ 006f1400] If you want to help, upload a sample of this file to ftp://uplo
    ad.ffmpeg.org/incoming/ and contact the ffmpeg-devel mailing list. (ffmpeg-devel
    @ffmpeg.org)
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'sound.mp4':
      Metadata:
        major_brand     : iso6
        minor_version   : 1
        compatible_brands: mp42dashmsdhmsixiso6avc1isom
        creation_time   : 2016-09-28 07:48:38
      Duration: 01:54:56.64, start: 0.000000, bitrate: 193 kb/s
        Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp,
    192 kb/s (default)
        Metadata:
          creation_time   : 2016-09-28 07:36:41
    At least one output file must be specified
    Can these even be fixed?
    Quote Quote  
  3. Member
    Join Date
    Mar 2011
    Location
    Nova Scotia, Canada
    Search Comp PM
    If the encyption is any frakking good, and it is, then of course you won't be able to decrpyt it.
    Quote Quote  
  4. Dang. Be a lot cooler if I could. Thanks eh
    Quote Quote  
  5. How did you manage to get the Encryption Keys?

    So far all I have seen with PlayReady is it's easy to grab the files just about any Videp Plugin Downloader in any Browser will do it but they are all AES encrypted w/o any keys.

    Personally I want to strip the DRM from my Movie and TV Collection I legally purchased on Amazon but I have not been able to do anything except download useless files that would take 100 years to Brute Force the encryption
    Quote Quote  



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