Videos from a FMP-FX1 (4K box)

[Dandu]

Hi

i have found an old (from ~2013) FMP-FX1. It's a 4K Box from Sony with an hard drive.

The box is not usable in 2025, beacsue i have not the Bravia from the old day, but u have open the box and connected the hard drive to my PC. With ISO Buster, i can read the contents.

There is many files on it. The "SFV" file are just MP4 with another extension, and i can read it with VLC. But there is many "EFV" file too. I have tried with MP4info and i have this result : its protected with cenc scheme.

Is there a way to try to find the key ? On the hard drive, i have a "DecryptAesKey" (16 bytes) and i have tried with MP4decrypt, but it will not work (the result is scrambled). Thre is a file too with information about Marlin.


There is many movies in 4K on the drive, and many episodes from Breaking Bad, too.

mp4info --verbose BadTeacher_74813_feat_r2_b2.efv 
File:
  major brand:      ccff
  minor version:    0
  compatible brand: iso6
  fast start:       yes

Movie:
  duration:   0 (movie timescale units)
  duration:   0 (ms)
  time scale: 90000
  fragments:  yes

Found 3 Tracks
Track 1:
  flags:        7 ENABLED IN-MOVIE IN-PREVIEW
  id:           1
  type:         Video
  duration: 0 ms
  language: und
  media:
    sample count: 0
    timescale:    24000
    duration:     0 (media timescale units)
    duration:     0 (ms)
    bitrate (computed): 44943.703 Kbps
    sample count with fragments: 9836
    duration with fragments:     9845836
    duration with fragments:     410243 (ms)
  display width:  3840.000000
  display height: 2160.000000
  Sample Description 0
    [ENCRYPTED]
      Coding:         encv
      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 = [03 5a ce 3b ca 30 8a 0b be 25 0f 28 da e5 b1 01]
    Bytes: 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
    Coding:       avc1 (H.264)
    Codec String: avc1.640033
    AVC Profile:          100 (High)
    AVC Profile Compat:   0
    AVC Level:            51
    AVC NALU Length Size: 4
    AVC SPS: [67640033ace500f0010fb0142021602800001f480005dc072400002faf0800017d7852518192000017d7840000bebc2928c07c60c458]
    AVC PPS: [68e93be651d1d84388c541f92088cc4736682930]
    Width:       3840
    Height:      2160
    Depth:       24

[Dandu]

The key on the file is DecryptAesKey (in hex) E98AC211 6590F6BA 80CB50C6 A27F9448