Womble MPEG Video Wizard plays VoB file with audio slip

Discussion in 'Amateur Video Production' started by Rick Merrill, Mar 12, 2007.

  1. Rick Merrill

    Rick Merrill Guest

    Why?

    I bring a VOB file from a DVD and play it in
    the Womble and the audio is played 1 second before the
    lips move on screen! Why why why?!

    This DVD has audio id of 160, linear PCM, 1536 kbps at 48.0 kHz

    A prior note said, From: Carlos Moreno
    Subject: Funny bug (Womble Wizard -- audio and video synch)
    When I feed it the VOB files that I extracted with
    DVD Decrypter, the audio and video are out of sync.
    The funnier thing is that the delay (the audio is
    "behind") increases as the file progresses (i.e.,
    when the video just starts, the delay is barely
    noticeable; a few seconds later, you notice that
    the delay is a fraction of a second -- about a
    minute later, the delay is brutal: you see the
    character moving their lips, and about 9 seconds
    later you hear the corresponding sound)"

    What I am seeing is that the SOURCE dvd (VOB) does
    not play correctly!
     
    Rick Merrill, Mar 12, 2007
    #1
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  2. Rick Merrill

    Andy Guest

    It is called 'Audio Shift' : )
     
    Andy, Mar 16, 2007
    #2
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  3. Hi There,
    The sound is probably out of sync.
    Import the Vob file into the Womble input window, right click on the window
    and under Audio select Delay or something like that.
    A little window will pop up that allows you to re-sync the sound by up to 2
    seconds whilst it is playing.
    When the sound is ok drag the input window content to the timeline and
    render to a new file.

    Regards,

    Martin
     
    Martin van derPoel, Mar 16, 2007
    #3
  4. Rick Merrill

    Rick Merrill Guest

    Holy cow, Martin and Andy, thank you for the 'audio shift' tip!
     
    Rick Merrill, Mar 16, 2007
    #4
  5. Rick Merrill

    Joe Guest

    I haven't played with the current latest version of Womble DVD Video
    Wizard to know if there is any improvement of the audio out-of-sync or not,
    but I have tested 2 earlier versions and they very limited and pretty
    difficult to slide to the correct frame.

    And for out-of-sync problem I would suggest a better one like the freeware
    VirtualDub which is much easier and much wider range than Wizard. And I
    haven't tried any hi-end commercial product to compare with VirtualDub.
     
    Joe, Mar 16, 2007
    #5
  6. Rick Merrill

    Jukka Aho Guest

    What's wrong with demultiplexing the video and audio to elementary
    streams (.m2v+.mp2) and then importing them on the timeline on separate
    tracks? This should allow free placement of audio and video to any
    offset wrt each other with no "range" limitations at all. (Womble MPEG
    Video Wizard DVD comes with a built-in MPEG demultiplexing tool - it can
    be found in the Tools menu.)
     
    Jukka Aho, Mar 16, 2007
    #6
  7. Rick Merrill

    Ken Maltby Guest

    VirtualDub (and its many descendants) is a great and useful
    video program, but it doesn't do MPEG.

    VirtualDubMod imports MPEG but only renders as AVI.
    There are times when this can be very useful and with a good
    encoding program to encode the output back to MPEG, there
    need not be any great impact on the image quality. Still it is
    better to remain in the original format, if at all possible.

    Womble and VideoReDo stay in MPEG the whole time,
    smart rendering without impacting the overall quality of the
    video.

    Luck;
    Ken
     
    Ken Maltby, Mar 16, 2007
    #7
  8. Rick Merrill

    Joe Guest

    Yes, VirtualDub does handle Mpeg and Vob, but you have to use the modified
    version instead of the original.
     
    Joe, Mar 17, 2007
    #8
  9. Rick Merrill

    Ken Maltby Guest

    Yes, VirtualDub does handle Mpeg and Vob, but you have to use the modified
    version instead of the original.


    I've heard of limited attention spans, but only one sentence?

    I just Opened a MPEG file in VirtualDubMod and if I try to
    Save as... (F7) it gives me the following options under "Save as
    type: Audio-Video Interleave (*.avi) or Ogg Media File (*.ogm)
    or Matroska File (*.mkv) . No MPEG Program or System File
    (*.mpg) or any variation like Transport Stream (*.TS).

    While it is possible to put MPEG into the avi, ogm and mkv
    container formats, VirtualDub would have to use the ffshow
    MPEG in AVI compressor to do it. Still it doesn't make (*.mpg)
    and will convert the MPEG including the MPEG video stream in a
    VOB, into an (*.avi) or an (*.ogm) or a (*.mkv) file.

    What modified version of VirtualDub will output MPEG files?
    If there were one I wouldn't suggest it, I find that the dedicated
    Encoding Programs do a better job than the plugins used in
    editing software.

    Luck;
    Ken
     
    Ken Maltby, Mar 17, 2007
    #9
  10. Rick Merrill

    Joe Guest

    Well, I am talking about fixing the out-of-sync then save the fixed AUDIO
    to either MP2, WAV, AC3 etc. to replace the out-of-sync audio *not* saving
    the video.
    Sorry for the misunderstanding.
     
    Joe, Mar 17, 2007
    #10
  11. Rick Merrill

    Ken Maltby Guest

    Well, I am talking about fixing the out-of-sync then save the fixed AUDIO
    to either MP2, WAV, AC3 etc. to replace the out-of-sync audio *not* saving
    the video.



    Hmm... Yes, you are right that would work. You could have
    outlined the process a little, so it wouldn't appear that you meant
    to accomplish the whole thing just using Vdub.

    The fixed audio would then be muxed back with the original
    video. You could just do it in your DVD Authoring program,
    if that is what the video is for.

    Personally if I want to put MPEG back in sync I just use
    VideoReDo. It even does .vob now, but I don't know if you
    can correct the sync and save it back as .vob; then have it
    work as a part of the existing DVD structure. You may still
    have to author a new DVD, so you might just save it as .mpg.

    Luck;
    Ken
     
    Ken Maltby, Mar 17, 2007
    #11
  12. Rick Merrill

    Joe Guest

    Yup! you will either need DVD authoring or some video tool to MUX the
    correct audio to the original video. And if DVD authoring with Audio =48K
    then it shouldn't take more than 15-20 mins to author the whole DVD
    I don't use VideoRedo to know much about it. I just use TMPGenc DVD
    Author to author my DVD, and unlike some others trying to convert all
    resolutions to DVD resolution, TDA will keep the original resolution. IOW,
    if you try to author some VCD resolution then TDA will keep 320x240 (or
    won't convert to 740x480 which will increase the size but won't improve the
    quality)

    BTW, I like VirtualDub (don't use often) because it's quick and easy to
    do. Or I feel it's much easier to type in the #### instead of using Slider
    which can be very hard to match the lips movement.
     
    Joe, Mar 17, 2007
    #12
  13. Rick Merrill

    Ken Maltby Guest

    Yup! you will either need DVD authoring or some video tool to MUX the
    correct audio to the original video. And if DVD authoring with Audio = 48K
    then it shouldn't take more than 15-20 mins to author the whole DVD
    I don't use VideoRedo to know much about it. I just use TMPGenc DVD
    Author to author my DVD, and unlike some others trying to convert all
    resolutions to DVD resolution, TDA will keep the original resolution. IOW,
    if you try to author some VCD resolution then TDA will keep 320x240 (or
    won't convert to 740x480 which will increase the size but won't improve the
    quality)

    BTW, I like VirtualDub (don't use often) because it's quick and easy to
    do. Or I feel it's much easier to type in the #### instead of using Slider
    which can be very hard to match the lips movement.

    Yeah, TDA - I think I may have heard of that.

    You might want to give VideoReDo a try if you work with MPEG
    very often.

    Luck;
    Ken

    P.S. I like Virtual Dub Mod, myself. It is even more useful if you
    frameserve.
     
    Ken Maltby, Mar 17, 2007
    #13
  14. Rick Merrill

    Joe Guest

    I mostly work with MPG and have been authoring somewhere around 2-6+ DVD
    daily for the past 4-5 years, and TDA serves me well so I never look at
    other.
    Years ago I ran into some out-of-sync problem with some video, and it was
    how I know VirtualDub. Yup! I tried the Mod myself and mostly the modified
    version that usually release right after the original (and I never use the
    original <g>)
     
    Joe, Mar 17, 2007
    #14
  15. Rick Merrill

    Rick Merrill Guest

    ....

    Apparently all DVD camcorders have the sound out of
    sync by 100 ms (approx) and the playback system
    knows this and corrects for it. Can anyone confirm or
    deny that? (3 frames worth?)
     
    Rick Merrill, Mar 18, 2007
    #15
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