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Michael
Asked: 2014-05-22 06:21:07 +0800 CST

VLC player can not support m4v files

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I am an advanced user of Ubuntu, and I made a script file for TunesViewer to make it work, and it can download all most all videos, and it uses vlc player but iy can not show the file *.m4v, and the file is a unidentified file called 'undf' it says:

No suitable decoder module: VLC does not support the audio or video format "undf". Unfortunately there is no way for you to fix this.

and it shows a window with errors. when I click close it says:

Your input can't be opened: VLC is usable to open Mrd 'http://a45.v.phobos.apple.com/us/r1000/081/Video/v4/85/54/f1/8554f106-6e77-8264-0bcb-e679609e8e3d/mzvf_5091800164576836550.640x480.h264lc.D2.p.m4c'. Check the log for details.

and than it downloads the file but can not display it, and are there any other players that support this file type? Can some one please help.

vlc

2 Answers

  1. Well, running VLC from a terminal gives a 404 error, meaning the file is not found, but this is with a .M4C extension! Changing to a .M4V, I have a black screen with controls, apparently to play a 30 seconds file... but it doesn't play anything!

    My guess is the file is corrupted or not valid! I tried to open it via TunesViewer and it gives me - .M4C or .M4V, same error -

    Download Error: timed out

    and when you download it via TV and then open it (it calls 'totem') you get the error

    the stream is encrypted and decryption is not supported

    Are you able to open it - the file or the stream - one way or another?

    Here is the info requested by @LiveWireBT :

    General
    Complete name : mzvf_5091800164576836550.640x480.h264lc.D2.p.m4v
    Format : MPEG-4
    Codec ID : M4V
    File size : 3.99 MiB
    Duration : 30s 0ms
    Overall bit rate : 1 116 Kbps
    Encoded date : UTC 2013-01-09 06:31:37
    Tagged date : UTC 2013-01-09 06:31:37

    Video
    ID : 1
    Format : AVC
    Format/Info : Advanced Video Codec
    Format profile : [email protected]
    Format settings, CABAC : No
    Format settings, ReFrames : 1 frame
    Codec ID : avc1
    Codec ID/Info : Advanced Video Coding
    Duration : 30s 0ms
    Source duration : 31s 615ms
    Bit rate : 927 Kbps
    Width : 640 pixels
    Height : 480 pixels
    Display aspect ratio : 16:9
    Frame rate mode : Constant
    Frame rate : 23.976 fps
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive
    Bits/(Pixel*Frame) : 0.126
    Stream size : 3.31 MiB (83%)
    Source stream size : 3.52 MiB (88%)
    Language : English
    Encoded date : UTC 2013-01-09 06:31:37
    Tagged date : UTC 2013-01-09 06:31:37
    Color primaries : BT.601-6 525, BT.1358 525, BT.1700 NTSC, SMPTE 170M
    Transfer characteristics : BT.709-5, BT.1361
    Matrix coefficients : BT.601-6 525, BT.1358 525, BT.1700 NTSC, SMPTE 170M

    Audio
    ID : 2
    Format : AAC
    Format/Info : Advanced Audio Codec
    Format profile : LC
    Codec ID : 40
    Duration : 30s 0ms
    Source duration : 30s 23ms
    Bit rate mode : Constant
    Bit rate : 128 Kbps
    Channel(s) : 2 channels
    Channel positions : Front: L R
    Sampling rate : 44.1 KHz
    Compression mode : Lossy
    Delay relative to video : -1s 300ms
    Stream size : 453 KiB (11%)
    Source stream size : 453 KiB (11%)
    Language : English
    Encoded date : UTC 2013-01-09 06:31:37
    Tagged date : UTC 2013-01-09 06:31:37
    Encryption : iTunes

    ... but after a quick search and it looks like VLC can't decrypt iTunes protection, hence the message @Michael gets!

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  2. The file can indeed be downloaded by changing the file extension, so this is the correct link. However MPlayer identifies the file as encumbered with DRM protection:

        Stream #0:0(eng): Audio: aac (drms / 0x736D7264), 44100 Hz, stereo, fltp, 123 kb/s (default)
Metadata:
  creation_time   : 2013-01-09 06:31:37
  handler_name    : Apple Sound Media Handler
Stream #0:1(eng): Video: none (drmi / 0x696D7264), 640x480, 932 kb/s, SAR 4:3 DAR 16:9, 23.98 fps, 23.98 tbr, 2997 tbn, 2997 tbc (default)
Metadata:
  creation_time   : 2013-01-09 06:31:37
  handler_name    : Apple Video Media Handler

    See the drms and drmi labels in there? IMHO it is best to avoid these type of files and the technology that produces them....

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