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  1. I have a FLV file that i cannot convert.
    mediainfo sayes:

    Complete name : 20221220112418.687_h264_high_p0_EVENT.flv
    Format : Flash Video
    File size : 6.01 MiB
    Duration : 1 min 32 s
    Overall bit rate mode : Variable
    Overall bit rate : 548 kb/s
    starttime : 1671535458.687
    encrypt : 1.000

    Video
    Format : AVC
    Format/Info : Advanced Video Codec
    Format profile : Main@L3.1
    Format settings : CABAC / 1 Ref Frames
    Format settings, CABAC : Yes
    Format settings, Reference frames : 1 frame
    Codec ID : 7
    Duration : 1 min 32 s
    Bit rate mode : Variable
    Bit rate : 977 kb/s
    Maximum bit rate : 1 961 kb/s
    Width : 1 280 pixels
    Height : 720 pixels
    Display aspect ratio : 16:9
    Frame rate mode : Constant
    Frame rate : 12.000 FPS
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive
    Bits/(Pixel*Frame) : 0.088
    Stream size : 10.7 MiB
    Color range : Full
    Color primaries : BT.709
    Transfer characteristics : BT.709
    Matrix coefficients : BT.709


    I try this command:
    ffmpeg -i 20221220112418.687_h264_high_p0_EVENT.flv

    [h264 @ 0x55740f00b0c0] Invalid NAL unit size (-1290772213 > 64830).
    [h264 @ 0x55740f00b0c0] missing picture in access unit with size 64834
    [h264 @ 0x55740f00b0c0] Invalid NAL unit size (-1290772213 > 64830).
    [h264 @ 0x55740f00b0c0] Error splitting the input into NAL units.
    [flv @ 0x55740f0095c0] decoding for stream 0 failed
    [flv @ 0x55740f0095c0] Could not find codec parameters for stream 0 (Video: h264, none, 1000 kb/s): unspecified size
    Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
    Input #0, flv, from '20221220112418.687_h264_high_p0_EVENT.flv':
    Metadata:
    starttime : 1671535459
    encrypt : 1
    canSeekToEnd : true
    Duration: 00:05:00.00, start: 0.000000, bitrate: 168 kb/s
    Stream #0:0: Video: h264, none, 1000 kb/s, 12 fps, 1k tbr, 1k tbn


    The video files is from a NVR disk and it may be encrypted in any ways..
    I attach a example file


    Any tips folkens?
    Image Attached Files
    Quote Quote  
  2. The file is encrypted.
    [NULL @ 00000228cb343800] Invalid NAL unit size (353701380 > 228853).
    [NULL @ 00000228cb343800] missing picture in access unit with size 228857
    [h264 @ 00000228cb343800] Invalid NAL unit size (353701380 > 228853).
    [h264 @ 00000228cb343800] Error splitting the input into NAL units.
    [h264 @ 00000228cb343800] Invalid NAL unit size (353705752 > 4356).
    [h264 @ 00000228cb343800] missing picture in access unit with size 4360
    [h264 @ 00000228cb343800] Invalid NAL unit size (353705752 > 4356).
    [h264 @ 00000228cb343800] Error splitting the input into NAL units.
    [h264 @ 00000228cb343800] Invalid NAL unit size (353702810 > 7558).
    [h264 @ 00000228cb343800] missing picture in access unit with size 7562
    [h264 @ 00000228cb343800] Invalid NAL unit size (353702810 > 7558).
    [h264 @ 00000228cb343800] Error splitting the input into NAL units.
    [h264 @ 00000228cb343800] Invalid NAL unit size (353708202 > 9910).
    [h264 @ 00000228cb343800] missing picture in access unit with size 9914
    [h264 @ 00000228cb343800] Invalid NAL unit size (353708202 > 9910).
    [h264 @ 00000228cb343800] Error splitting the input into NAL units.
    [h264 @ 00000228cb343800] Invalid NAL unit size (353707491 > 11263).
    [h264 @ 00000228cb343800] missing picture in access unit with size 11267
    [h264 @ 00000228cb343800] Invalid NAL unit size (353707491 > 11263).
    [h264 @ 00000228cb343800] Error splitting the input into NAL units.
    [h264 @ 00000228cb343800] Invalid NAL unit size (353706234 > 12006).
    [h264 @ 00000228cb343800] missing picture in access unit with size 12010
    [h264 @ 00000228cb343800] Invalid NAL unit size (353706234 > 12006).
    [h264 @ 00000228cb343800] Error splitting the input into NAL units.
    [h264 @ 00000228cb343800] Invalid NAL unit size (353713687 > 12299).
    [h264 @ 00000228cb343800] missing picture in access unit with size 12303
    [h264 @ 00000228cb343800] Invalid NAL unit size (353713687 > 12299).
    [h264 @ 00000228cb343800] Error splitting the input into NAL units.
    [h264 @ 00000228cb343800] Invalid NAL unit size (353713308 > 12928).
    [h264 @ 00000228cb343800] missing picture in access unit with size 12932
    Quote Quote  
  3. Might be an encryption or a broken file
    users currently on my ignore list: deadrats, Stears555, marcorocchini
    Quote Quote  
  4. How can it be decrypted?

    What do i need? Hash, password ?
    Quote Quote  
  5. I looked at the file in a hex editor and it mentioned 'encrypt',

    Since you didn't mention anything about the source, I suspect that it might be encrypted.

    To decrypt it, you would need a decryption key and a tool which knows the used encryption and that can decode it with the key.
    Others might know more if you share some details about the source of the file,...

    Cu Selur
    users currently on my ignore list: deadrats, Stears555, marcorocchini
    Quote Quote  
  6. Sorry for little info
    The file is from a Eagle Eye NVR
    The file is encrypted.

    I have some files from the broken disk, but i dont know What file/password to search for.
    Quote Quote  
  7. You probably need some special software to playback/convert the file.
    Best look at the side of the manufacturer and if there is nothing, contact their support.
    users currently on my ignore list: deadrats, Stears555, marcorocchini
    Quote Quote  



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