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  1. A VOB which I created by ripping a DVD using DVDShrink as a single VOB file with layer breaks removed is only showing 58 mins running time in media player.

    Does anyone know what is causing this? Is there something that needs to be fixed in the structure of the VOB to show the correct running time?
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  2. Member mats.hogberg's Avatar
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    VOBs are just pieces of a Video DVD taken out of it's context. They are not meant to be treated as computer files, like AVI or MPG or...
    How a particular app sees and treats a VOB (if at all) is entirely up to each app.
    If you want computer playback, convert to MPG, or try a software DVD player (like PowerDVD) to play individual VOBs.
    WMP has never been worth the HDD space it occupies anyway, IMO

    /Mats
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  3. If I rename the file to a .MPG instead of demuxing it plays fine but still displays the shortened running time. Perhaps if I explain what I am trying to do it might help:

    I have been working with the guy who developed My Movies plugin for Windows Media Center, and specifically streaming dvd content (main movie only) to the new Xbox 360. The method we use right now is to DVDShrink it then rename the extension to .MPG. This plays fine for a lot of movies but some, the ones that show the shortened running time, crash/freeze at the point media player says is it's max run time. We believe that something in the VOB is causing this (although we first suspected the layer break but after removing this with shrink we still get the same problem) so we are thinking there must be a tool out there that can go through the VOB and change it's structure so that it will report the correct runtime and therefore not crash.

    The only workaround so far is to demux and multiplex the video/audio streams. We are testing SmartRipper for this but it crashes at certain points while demuxing some movies. We tried VOBRator but this creates 2 output m2v files in some cases instead of one (anyone know why?).
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  4. If you are trying to demux a VOB, as with SmartRipper, then you could try VOBEdit.
    When I was born I was so shocked that I could'nt speak for 18 months.
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  5. Vob2Mpg simply joines VOB files and renames the extension of the file. It does nothing more than that, no more than ripping with Shrink to one giant VOB and renaming it.

    Now I did make some progress, but not in the direction I wanted. I demuxed the VOB using VOBRater. It produced two files with a VOB-id of 1 & 2 respectivly. I muxed these m2v and ac3 files back into two mpg files. I joined these two by doing the copy file1.mpg+file2.mpg file.mpg method, but even by doing this it still freezes at the 58 minute mark (where the two files joined).

    Any ideas?
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  6. Member mats.hogberg's Avatar
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    Next try: ReJig - With ReJig, you can demux m2v and audio from a whole set of VOB's as one file each stream.

    /Mats
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  7. Member ChrissyBoy's Avatar
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    Originally Posted by mrloofer
    Vob2Mpg simply joines VOB files and renames the extension of the file. It does nothing more than that, no more than ripping with Shrink to one giant VOB and renaming it.

    Any ideas?
    v2 of VOB2MPG?
    SVCD2DVD v2.5, AVI/MPEG/HDTV/AviSynth/h264->DVD, PAL->NTSC conversion.
    VOB2MPG PRO, Extract mpegs from your DVDs - with you in control!
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  8. Well VOB2MPG looks like it solved the problem. I'll have to conduct a few more tests with some more videos to see.

    What, incidentally, is PTS fix anyway?
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  9. Member ChrissyBoy's Avatar
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    Sometimes the vobs, within a titleset, have presentation timestamps which are reset. So if you have a vobset which is 2 hours long with 2 x (1 hour) vobs, each vob would have PTSs from 00:00:00 to 01:00:00. When these are joined (which is the first thing VOB2MPG does) you have a big mpg which has PSTs values: 00:00:00 to 01:00:00, then 00:00:00 to 01:00:00. Most software (WMP, editing & authoring s/ware etc) will look at the begining PTS (00:00:00) and the end PTS (01:00:00) and think the mpg is only 1 hour in duration.... "PTS fix" fixes this and shows the merged mpg as having PTS from 00:00:00 to 02:00:00

    Of course this is not always true: most of the time PTS values are continous in a titleset. Also some software calculate mpeg duration using different methods (GOP timestamps for example)... that is why some programs yield different duration values....
    SVCD2DVD v2.5, AVI/MPEG/HDTV/AviSynth/h264->DVD, PAL->NTSC conversion.
    VOB2MPG PRO, Extract mpegs from your DVDs - with you in control!
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