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.

  • 1
    The site says: The requested URL /Video/v4/85/54/f1/8554f106-6e77-8264-0bcb-e679609e8e3d/mzvf_5091800164576836550.640x480.h264lc.D2.p.m4c was not found on this server. – xangua May 21 '14 at 14:57
  • Could you possibly add the output of mediainfo for this file? – LiveWireBT May 21 '14 at 18:28
  • Where is that link coming from? – NoBugs May 23 '14 at 2:44

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 :

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

ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Baseline@L3.0
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

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!

  • Not able to find the file, and don't know if am able open it, and stream it but I can stream some of the movies. – Michael May 21 '14 at 17:14
  • You can stream from your script in TV? Or on a Winbox with iTunes? Never used iTunes, just tried and couldn't find a way to open an URL... – ionreflex May 21 '14 at 19:07
  • The problem is that it is a unidentified format which probely is't there, and no I have not tried this you said. – Michael May 22 '14 at 14:47

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)
  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)
  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....

  • Really? What iTunesU podcasts use DRM? iTunes music even doesn't have DRM last I heard. – NoBugs May 23 '14 at 2:45
  • Well, this one is certainly drm encumbered. I don't know if this is standard for iTunes... – andrew.46 May 24 '14 at 6:16
  • Hi. Are there any way to get those file decrypted have the same problem. Thanks. – Michael May 27 '14 at 15:19
  • Not that I am aware of, under Linux... – andrew.46 May 27 '14 at 21:34

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.