Mediainfo
Code:
General
Format                                   : MPEG-4
Format profile                           : Base Media
Codec ID                                 : isom (iso6/mp42/vp09)
File size                                : 13.4 GiB
Duration                                 : 2 h 36 min
Overall bit rate                         : 12.3 Mb/s
Frame rate                               : 59.940 FPS
Encoded date                             : 2025-04-25 17:49:44 UTC
Tagged date                              : 2025-04-25 17:49:44 UTC
FileExtension_Invalid                    : braw mov mp4 m4v m4a m4b m4p m4r 3ga 3gpa 3gpp 3gp 3gpp2 3g2 k3g jpm jpx mqv ismv isma ismt f4a f4b f4v
Conformance errors                       : 33
 moof                                    : Yes
  traf                                   : Yes
   0x00000000                            : Yes
    General compliance                   : Element size 14384153519 is more than maximal permitted size 3592 (offset 0x272D83) / Element size 14339949926 is more than maximal permitted size 3688 (offset 0x2C9ABCC) / Element size 14144100634 is more than maximal permitted size 3688 (offset 0xE761818) / Element size 14130268316 is more than maximal permitted size 3688 (offset 0xF492896) / Element size 14116433215 is more than maximal permitted size 3688 (offset 0x101C43F3) / Element size 14104115392 is more than maximal permitted size 3688 (offset 0x10D83872) / Element size 14091823225 is more than maximal permitted size 3688 (offset 0x1193C8B9) / Element size 14079003995 is more than maximal permitted size 3688 (offset 0x125763D7) / Element size 14066296958 is more than maximal permitted size 3688 (offset 0x131948B4) / Element size 14054438102 is more than maximal permitted size 3688 (offset 0x13CE3C5C) / Element size 14042245768 is more than maximal permitted size 3688 (offset 0x148846AA) / Element size 14030517751 is more than maximal permitted size 3676 (offset 0x153B3B3B) / Element size 14017878736 is more than maximal permitted size 3688 (offset 0x15FC1662) / Element size 14004570292 is more than maximal permitted size 3676 (offset 0x16C7287E) / Element size 13992200976 is more than maximal permitted size 3688 (offset 0x1783E622) / Element size 13979671625 is more than maximal permitted size 3688 (offset 0x184314E9) / Element size 13967139915 is more than maximal permitted size 3688 (offset 0x19024CE7) / Element size 13956116863 is more than maximal permitted size 3688 (offset 0x19AA7FB3) / Element size 13944458774 is more than maximal permitted size 3688 (offset 0x1A5C631C) / Element size 13932000940 is more than maximal permitted size 3688 (offset 0x1B1A7A86) / Element size 13919610115 is more than maximal permitted size 3688 (offset 0x1BD78C2F) / Element size 13907637468 is more than maximal permitted size 3688 (offset 0x1C8E3C56) / Element size 13896231617 is more than maximal permitted size 3688 (offset 0x1D3C4671) / Element size 13884770926 is more than maximal permitted size 3688 (offset 0x1DEB26C4) / Element size 13873204299 is more than maximal permitted size 3688 (offset 0x1E9BA4E7) / Element size 13860926190 is more than maximal permitted size 3688 (offset 0x1F56FE44) / Element size 13847431594 is more than maximal permitted size 3688 (offset 0x2024E788) / Element size 13833476143 is more than maximal permitted size 3676 (offset 0x20F9D903) / Element size 13819685852 is more than maximal permitted size 3688 (offset 0x21CC4556) / Element size 13806432143 is more than maximal permitted size 3676 (offset 0x229681A3) / Element size 13794461019 is more than maximal permitted size 3688 (offset 0x234D2BD7) / Element size 13782780481 is more than maximal permitted size 3688 (offset 0x23FF66F1)
 General compliance                      : [More conformance errors...]

Video
ID                                       : 2
Format                                   : VP9
Codec ID                                 : encv / vp09
Duration                                 : 2 h 36 min
Bit rate                                 : 12.0 Mb/s
Width                                    : 3 840 pixels
Height                                   : 2 160 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Variable
Frame rate                               : 59.940 (59940/1000) FPS
Minimum frame rate                       : 58.824 FPS
Maximum frame rate                       : 62.500 FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bits/(Pixel*Frame)                       : 0.024
Stream size                              : 13.1 GiB (98%)
Encoded date                             : 2025-04-25 17:49:44 UTC
Tagged date                              : 2025-04-25 17:49:44 UTC
Encryption                               : Encrypted
Color range                              : Limited
Color primaries                          : BT.709
Transfer characteristics                 : BT.709
Matrix coefficients                      : BT.709

Audio
ID                                       : 1
Format                                   : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Codec ID                                 : enca-40 / mp4a-2
Duration                                 : 2 h 36 min
Bit rate mode                            : Constant
Bit rate                                 : 256 kb/s
Channel(s)                               : 2 channels
Channel layout                           : L R
Sampling rate                            : 48.0 kHz
Frame rate                               : 46.875 FPS (1024 SPF)
Compression mode                         : Lossy
Stream size                              : 286 MiB (2%)
Encoded date                             : 2021-10-14 07:11:13 UTC
Tagged date                              : 2021-10-14 07:11:13 UTC
Encryption                               : Encrypted
mp4info
Code:
File:
  major brand:      isom
  minor version:    0
  compatible brand: iso6
  compatible brand: mp42
  compatible brand: vp09
  fast start:       yes

Movie:
  duration:   0 (movie timescale units)
  duration:   0 (ms)
  time scale: 1000
  fragments:  yes

Found 2 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): 256.000 Kbps
    sample count with fragments: 439174
    duration with fragments:     449714184
    duration with fragments:     9369046 (ms)
  Sample Description 0
    [ENCRYPTED]
      Coding:         enca
      Scheme Type:    cenc
      Scheme Version: 65536
      Scheme URI:     
    Coding:       mp4a (MPEG-4 Audio)
    Codec String: mp4a.40.2
    Stream Type: Audio
    Object Type: MPEG-4 Audio
    Max Bitrate: 255999
    Avg Bitrate: 255999
    Buffer Size: 0
    MPEG-4 Audio Object Type: 2 (AAC Low Complexity)
    MPEG-4 Audio Decoder Config:
      Sampling Frequency: 48000
      Channels: 2
    Sample Rate: 48000
    Sample Size: 16
    Channels:    2
Track 2:
  flags:        7 ENABLED IN-MOVIE IN-PREVIEW
  id:           2
  type:         Video
  duration: 0 ms
  language: und
  media:
    sample count: 0
    timescale:    1000
    duration:     0 (media timescale units)
    duration:     0 (ms)
    bitrate (computed): 12014.231 Kbps
    sample count with fragments: 561575
    duration with fragments:     9364264
    duration with fragments:     9364264 (ms)
  display width:  3840.000000
  display height: 2160.000000
  Sample Description 0
    [ENCRYPTED]
      Coding:         encv
      Scheme Type:    cenc
      Scheme Version: 65536
      Scheme URI:     
    Coding:       vp09 (VP9)
    Codec String: vp09
    Width:       3840
    Height:      2160
    Depth:       24

I try to decrypt a file with mp4decrpyt. The decrypted mp4 is successful to play.
but I get the only warning when processing decryption. My question is does it matter? I hope folks can confirm me to ignore it as I would not have another time to reprocess.

Code:
WARNING: atom serialized to fewer bytes than declared size