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  1. I've recorded a DVD-R in my Panasonic DVD recorder, and finalised it. One continuous title, no breaks.

    VLC won't play the first of the 4 VOBs on the disc. Another program used for thumbnailing also refuses to load it. The disc plays fine in DVD Player.

    When I checked the rogue VOB in MediaInfo it incorrectly states the video as being NTSC (it's actually PAL), 29.970 fps (it's actually 25fps) and dimensions of 352px x 240px (it's 720x576). Acording to MediaInfo there's not even any audio either, which there def is coz I can hear it when I play it through DVD Player!

    How can I fix this info in the VOB so the DVD is more robust?
    Last edited by Gibson's Squares; 18th Feb 2016 at 17:10.
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  2. I'm a MEGA Super Moderator Baldrick's Avatar
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    What happens if you try for example vob2mpg on the dvd/video_Ts folder? Do you get a single mpg with same incorrectly video details?
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  3. Member DB83's Avatar
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    The scenario you describe is next to impossible.

    I would follow Baldrick's lead and rip that dvd-r to a single mpeg using vob2mpg and burn the mpeg back to dvd using avstodvd/imgburn
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  4. Next to impossilbe in what way DB83?


    Here's what mediaInfo said about the original rogue VTS_01_1.VOB:

    General
    Complete name : VTS_01_1.VOB
    Format : MPEG-PS
    File size : 1 024 MiB
    Duration : 33ms
    Overall bit rate mode : Variable
    Overall bit rate : 260293104484

    Video
    ID : 224 (0xE0)
    Format : MPEG Video
    Format version : Version 2
    Format settings, BVOP : No
    Format settings, Matrix : Custom
    Duration : 33ms
    Bit rate mode : Variable
    Width : 352 pixels
    Height : 240 pixels
    Display aspect ratio : 3:2
    Frame rate : 29.970 fps
    Standard : NTSC
    Color space : YUV
    Bit depth : 8 bits
    Scan type : Progressive
    Compression mode : Lossy

    Menu
    However here's what it reported for the second VOB on the disc. The remaining two VOBs also have the same specs:

    General
    Complete name : VTS_01_2.VOB
    Format : MPEG-PS
    File size : 1 024 MiB
    Duration : 50mn 47s
    Overall bit rate mode : Variable
    Overall bit rate : 2 819 Kbps

    Video
    ID : 224 (0xE0)
    Format : MPEG Video
    Format version : Version 2
    Format profile : Main@Main
    Format settings, BVOP : Yes
    Format settings, Matrix : Custom
    Format settings, GOP : M=3, N=12
    Duration : 50mn 47s
    Bit rate mode : Variable
    Bit rate : 2 506 Kbps
    Maximum bit rate : 9 549 Kbps
    Width : 720 pixels
    Height : 576 pixels
    Display aspect ratio : 4:3
    Frame rate : 25.000 fps
    Standard : PAL
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Interlaced
    Scan order : Top Field First
    Compression mode : Lossy
    Bits/(Pixel*Frame) : 0.242
    Stream size : 911 MiB (89%)
    Color primaries : BT.470-2 System B, BT.470-2 System G
    Transfer characteristics : BT.470-2 System B, BT.470-2 System G
    Matrix coefficients : BT.470-2 System B, BT.470-2 System G

    Audio
    ID : 189 (0xBD)-128 (0x80)
    Format : AC-3
    Format/Info : Audio Coding 3
    Mode extension : CM (complete main)
    Muxing mode : DVD-Video
    Duration : 50mn 47s
    Bit rate mode : Constant
    Bit rate : 256 Kbps
    Channel(s) : 2 channels
    Channel positions : Front: L R
    Sampling rate : 48.0 KHz
    Bit depth : 16 bits
    Compression mode : Lossy
    Stream size : 93.0 MiB (9%)

    Menu
    I tried creating a single Mpeg with vob2mpg - the flags remain wrong but in a slightly different way. MediaInfo now claims there's no video at all.

    Here's what MediaInfo says about the new combined single file:

    General
    Complete name : VTS_01.mpg
    Format : MPEG-PS
    File size : 4.04 GiB
    Duration : 576ms
    Overall bit rate : 60195754666

    Audio
    ID : 189 (0xBD)-128 (0x80)
    Format : AC-3
    Format/Info : Audio Coding 3
    Mode extension : CM (complete main)
    Muxing mode : DVD-Video
    Duration : 576ms
    Bit rate mode : Constant
    Bit rate : 256 Kbps
    Channel(s) : 2 channels
    Channel positions : Front: L R
    Sampling rate : 48.0 KHz
    Bit depth : 16 bits
    Compression mode : Lossy
    Stream size : 18.0 KiB (0%)

    Menu
    I checked it with Gspot and it at least saw the video, but again reported it as NTSC, 320x240. VLC still refuses to play it.


    So I've recorded a few more DVDs using this same DVD Recorder and the resulatant finalised discs all exhibit this same quirk.

    Womble MPEG Video Wizard reads the disc and VOBs fine. I found if I trim a few frames off the beginning and make either a single MPG or full DVD, all flags get written correctly (this is without re-encoding BTW).

    But it's still frikkin annoying.
    Is there no way to just edit the existing bad flags rather than re-output the video?
    Last edited by Gibson's Squares; 27th Feb 2016 at 21:28.
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    Gibson
    is this a NEW dvd recorder ?
    this sounds like a deliberate attempt by the mfg to prevent a DVD that can be played in a PC or copied
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    Originally Posted by Gibson's Squares View Post
    So I've recorded a few more DVDs using this same DVD Recorder and the resulatant finalised discs all exhibit this same quirk.

    Womble MPEG Video Wizard reads the disc and VOBs fine. I found if I trim a few frames off the beginning and make either a single MPG or full DVD, all flags get written correctly (this is without re-encoding BTW).

    But it's still frikkin annoying.
    Is there no way to just edit the existing bad flags rather than re-output the video?
    The incorrect flagging seems like a bug. You could try DVDPatcher to see if it can correct the flags.

    I avoid using VOBs as media files because VOBs are not really designed to be used on their own. If I want a media file, I use VOB2MPG or MakeMKV on the DVD to repackage the audio and video in a container that is intended to be used by itself.
    Last edited by usually_quiet; 28th Feb 2016 at 00:39.
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  7. Member DB83's Avatar
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    Originally Posted by theewizard View Post
    Gibson
    is this a NEW dvd recorder ?
    this sounds like a deliberate attempt by the mfg to prevent a DVD that can be played in a PC or copied
    But that disk is out of spec. It should not play anywhere. Unless.....

    Just one question. Is the disk recorded in 'video mode' or 'video recording mode'. A common mistake (I did it myself years ago). So that disk only plays in the recorder not in another player.
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  8. Originally Posted by DB83 View Post
    Originally Posted by theewizard View Post
    Gibson
    is this a NEW dvd recorder ?
    this sounds like a deliberate attempt by the mfg to prevent a DVD that can be played in a PC or copied
    But that disk is out of spec. It should not play anywhere. Unless.....

    Just one question. Is the disk recorded in 'video mode' or 'video recording mode'. A common mistake (I did it myself years ago). So that disk only plays in the recorder not in another player.
    It's not a new recorder, no. It's a Panasonic DMR-EZ48V (circa 2009). I know this model has been reported as 'buggy', but this is a bit much!

    I've been using DVD-Rs, so assume I have definitely been recording in Video Mode, as Video Recording Mode only works on DVD-RW discs.

    One thing I noticed after my previous post is that the tiny VIDEO_TS.VOB file (not sure what it is? A menu?) does have the correct flags. I wonder if the DVD Players are reading this file first and ignoring any further flags, and that's why it plays in every DVD player I've tried? (It's only that first VOB that won't play in isolation using software on a computer) That's just a guess, as I did set the disc to play automatically and not show the menu first, but maybe it reads that file and doesn't display it??? I dunno...

    Here's what MediaInfo says about the VIDEO_TS.VOB file:

    General
    Complete name : VIDEO_TS.VOB
    Format : MPEG-PS
    File size : 60.0 KiB
    Duration : 40ms
    Overall bit rate mode : Variable
    Overall bit rate : 12.3 Mbps

    Video
    ID : 224 (0xE0)
    Format : MPEG Video
    Format version : Version 2
    Format profile : Main@Main
    Format settings, BVOP : No
    Format settings, Matrix : Default
    Duration : 40ms
    Bit rate mode : Variable
    Maximum bit rate : 8 648 Kbps
    Width : 720 pixels
    Height : 576 pixels
    Display aspect ratio : 4:3
    Frame rate : 25.000 fps
    Standard : PAL
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Interlaced
    Scan order : Top Field First
    Compression mode : Lossy
    Color primaries : BT.470-2 System B, BT.470-2 System G
    Transfer characteristics : BT.470-2 System B, BT.470-2 System G
    Matrix coefficients : BT.470-2 System B, BT.470-2 System G

    Text
    ID : 189 (0xBD)-32 (0x20)
    Format : RLE
    Format/Info : Run-length encoding
    Muxing mode : DVD-Video

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    Last edited by Gibson's Squares; 28th Feb 2016 at 07:28.
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  9. Member hech54's Avatar
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    Originally Posted by Gibson's Squares View Post
    it plays in every DVD player I've tried? (It's only that first VOB that won't play in isolation using software on a computer)
    So all this time everyone here has been commenting on someone (you) trying to pull individual VOB files from a disc?
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  10. Member DB83's Avatar
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    So it's a Panny. Given that they also support DVD-RAM I guess anything is possible.

    I did a quick look at the manual and I could not see any specific recording-mode setting other than one that preports to 'fill a disk'.

    But if the recorded disk does play in all the players you tried - what about PC players such as VLC ? - then why are you fretting ?

    There is a section in the manual about copying recordings which I did not read but maybe they also have to be done within the machine.

    Video_TS.vob is the menu - check 'What Is' on the top of this page for the dvd structure.
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  11. Originally Posted by DB83 View Post
    But if the recorded disk does play in all the players you tried - what about PC players such as VLC ? - then why are you fretting ?
    The disc does play as a DVD fine through VLC, but if I try and play that first VOB by itself in VLC, it won't play. (And remember, VLC rarely rejects anything!)

    I'm only fretting because:
    1. I've discovered I'm backing up all my VHSs to what appears to be corrupt/out-of-spec DVDs.
    2. When I want to use the VOBs in other ways (eg to make thumbnails) the rogue VOBs are not recognised so I have to go through some long winded transcode process for what's usually a 5 second task.
    3. There's absolutely no reason for any of this!

    If anyone else has a Panasonic DMR-EZ48V DVD Recorder I'd be interested to hear if this bug is in their machine too, or just unique to mine.
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  12. Member DB83's Avatar
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    Have you tried ripping the dvd to your HDD using dvddecrypter as a single vob rather than just copying the vobs from the disk.

    Should not make a difference but you never know.

    One thing you may want to consider is doing a recording for the forum and we can then take a closer look at the results. The recording will, naturally, have to span more than one vob. Then upload an iso somewhere for download.
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