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  1. Member
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    I ripped a burned DVD to my hard drive using DVD Decrypter and opened each vob in VirtualDub in order to save as an avi so that I can do some work on them. On the original DVD, the video drops out for about two minutes, but the audio continues. When the video kicks back in it is still in synch with the audio. On the ripped version it is out of synch. Seems that I'm losing some of the frames during the dropout in the rip process. I've done this successfully many, many times before, but it's just not working on this particular disc.

    If I could find a software DVD player that would give me a frame counter I could tell exactly how many frames long the dropout is and fix it in the editing, but haven't found one yet. Any ideas on that, or any other ways to correct the problem?

    Thanks.
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  2. I'm a MEGA Super Moderator Baldrick's Avatar
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    Have you tried rip using something else? Like if it's a commercial dvd then try latest dvdfab decrypter or if it's a homemade dvd try isobuster.
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  3. Member
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    Thanks for the suggestion. Based on that I just tried ISOBuster with the same results. Should have mentioned in my original post that I had already tried DVD Fab HD Decrypter, cladDVD.net, RipIt4Me and SmartRipper.

    Any other ideas are appreciated.
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  4. Member hech54's Avatar
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    Re-Rip the disc with DVDDecrypter as one giant VOB (IFO Mode - File Splitting NONE) and see what happens.
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  5. just curious, you are making sure that "skip bad sectors" is NOT checked correct? I know isobuster has a function like that (however that will replace it with dummy zeros) and though I cannot check it now, I thought decrypter had a similar option? If so make sure it is not checked
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  6. Member
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    OK, I went back and tried again with IsoBuster, checking for any settings that I could find that would even suggest that any bad sectors would be skipped, etc. Did the same with DVD Decrypter and DVD Fab. Have tried all with extracting as a single vob (the way I normally do it), but at that spot in the resulting file when the video kicks back in it's still out of synch.

    Instead of spending any more time trying to figure out how to get it extracted without snych issues, does anyone know of any software DVD player that displays a frame counter and would allow me to move by frame forwards and backwards? If I could at least nail down the number of frames being dropped I could fix it in the edit. I've got to do something in that space anyway, but would know how long to make the filler.

    Any ideas on that or other appraches to getting this extratced and in synch are appreciated.
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  7. virtualdubmod would all you to do this
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  8. Member
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    I hadn't used VirtualDub Mod in a while since VirtualDub will now open vob files directly, but pulled it back up to take another look. While I was aware that I could advance/reverse a frame at a time in VirtualDub and VirtualDub Mod (and see what frame I'm on), I must be missing something since I don't see how to use it to play a DVD directly. It still seems to require that I select a file (in this case one of the vobs) to open directly off the disc.

    I did that and got the error messages below, although the file did load. Playing that file still resulted in the same loss of synch when the video pops back in. I'm sure that the error message is warning me of the problems with the video, but I don't know how to interpret it to determine how many frames were dropped as a result of the errors. Any ides on that? As always, thanks for any help.

    [!] MPEG: Anachronistic or discontinuous timestamp found in video stream 0 at
    byte position 1890322, from 114743609 to 114809675. This may indicate an
    improper join.

    [!] MPEG: Anachronistic or discontinuous timestamp found in video stream 0 at
    byte position 2828306, from 114917783 to 114986852. This may indicate an
    improper join.

    [!] MPEG: Anachronistic or discontinuous timestamp found in video stream 0 at
    byte position 3174418, from 114986852 to 115061927. This may indicate an
    improper join.

    [!] MPEG: Anachronistic or discontinuous timestamp found in video stream 0 at
    byte position 3530770, from 115061927 to 115127993. This may indicate an
    improper join.

    [!] MPEG: Anachronistic or discontinuous timestamp found in video stream 0 at
    byte position 3874834, from 115127993 to 115194059. This may indicate an
    improper join.

    [!] MPEG: Anachronistic or discontinuous timestamp found in video stream 0 at
    byte position 4562962, from 115254119 to 115326191. This may indicate an
    improper join.

    [!] MPEG: Anachronistic or discontinuous timestamp found in video stream 0 at
    byte position 4915218, from 115326191 to 115401266. This may indicate an
    improper join.

    [!] MPEG: Anachronistic or discontinuous timestamp found in video stream 0 at
    byte position 5267474, from 115401266 to 115485350. This may indicate an
    improper join.

    [!] MPEG: Anachronistic or discontinuous timestamp found in video stream 0 at
    byte position 5586962, from 115485350 to 115557422. This may indicate an
    improper join.

    [!] MPEG: Anachronistic or discontinuous timestamp found in video stream 0 at
    byte position 5863442, from 115557422 to 115620485. This may indicate an
    improper join.

    [!] MPEG: Anachronistic or discontinuous timestamp found in video stream 0 at
    byte position 6242322, from 115620485 to 115686551. This may indicate an
    improper join.

    [!] MPEG: Anachronistic or discontinuous timestamp found in video stream 0 at
    byte position 6924306, from 115746611 to 115827692. This may indicate an
    improper join.

    [!] MPEG: Anachronistic or discontinuous timestamp found in video stream 0 at
    byte position 7284754, from 115827692 to 115902767. This may indicate an
    improper join.

    [!] MPEG: Anachronistic or discontinuous timestamp found in video stream 0 at
    byte position 7637010, from 115902767 to 115968833. This may indicate an
    improper join.

    [!] MPEG: Anachronistic or discontinuous timestamp found in video stream 0 at
    byte position 10666002, from 116476340 to 116539403. This may indicate an
    improper join.

    [!] MPEG: Anachronistic or discontinuous timestamp found in video stream 0 at
    byte position 11003922, from 116539403 to 116608472. This may indicate an
    improper join.

    [!] MPEG: Anachronistic or discontinuous timestamp found in video stream 0 at
    byte position 11696146, from 116665529 to 116737601. This may indicate an
    improper join.

    [!] MPEG: Anachronistic or discontinuous timestamp found in video stream 0 at
    byte position 12046354, from 116737601 to 116803667. This may indicate an
    improper join.

    [!] MPEG: Anachronistic or discontinuous timestamp found in video stream 0 at
    byte position 12734482, from 116863727 to 116935799. This may indicate an
    improper join.

    [!] MPEG: Anachronistic or discontinuous timestamp found in video stream 0 at
    byte position 13586450, from 117037901 to 117103967. This may indicate an
    improper join.

    [!] MPEG: Anachronistic or discontinuous timestamp found in video stream 0 at
    byte position 14706706, from 117263126 to 117332195. This may indicate an
    improper join.

    [!] MPEG: Anachronistic or discontinuous timestamp found in video stream 0 at
    byte position 15042578, from 117332195 to 117398261. This may indicate an
    improper join.
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  9. I was thinking about it a little more. Your sync issue can also be an audio pts time stamp screw up causing your sync issue. Sometimes if I do use decrpyter to rip a burned disc back to the hard drive as one vob file (or using pgc demux for a dvd already on the hard drive), it may play fine but throwing it in any editor would show it going out of sync.

    Mostly this only occurs when using decrpyter.

    Not sure if you have access to it, but womble mpeg2vcr has a gop scan/fix option. It will scan the stream and fix any errors. In your case the gop is probably fine, but it would fix the audio time stamps which in turn may fix your sync problem
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  10. Member
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    Many thanks for the Womble suggestion. Might not have worked out exactly as you thought, but it DID get me where I needed to go. Was able to load the affected vobs straight from the disc and play them WITH everything in synch. That allowed me to accurately determine the number of frames between when the video dropped out and when it popped back in. Was then able to fix it by editing the avi I had already created; inserting the appropriate lenghth of filler to keep everything in synch.

    Thanks again to everyone for your suggestions.
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