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Audio Coming From 1 Speaker Only

Discussion in 'Convert video to another format' started by AaronsDad, Jul 18, 2011.

  1. AaronsDad

    AaronsDad Member

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    Hey everyone!I have a small problem and I am sorry if this isn't in the right section but I couldn't figure out anywhere else to put it. A few years back I transferred some of my video tapes to dvd. The vcr I used back then only had 1 audio jack therefore when I go to watch the dvd on my computer there's only audio coming out of one speaker. Also when I go to watch the dvd on my television the audio is really low due to there only being audio coming from one channel. I now have a connector that takes care of that problem when I transfer tapes using that vcr. However, some of those tapes are so old I really can't transfer them again with as good of an outcome in quality as I did back then. So, I was wondering, is there a program out there that will let me re-author the dvds and add the audio to the other channel or speaker? I've been looking everywhere and I can't find nothing. Any help would be appreciated. Thanks
     
  2. attar

    attar Senior member

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    Copy the VIDEO_TS folder to the Desktop.
    Run AVStoDVD.
    Set your preferences for NTSC/PAL depending if you are in North America/anywhere else.
    Open VTS_01_0.IFO
    Highlight and right click the Title to edit it.
    Select the 'Audio' tab;set as stereo, 128 and 'Normalize' the audio.
    Click 'Start' to save the new movie.

    [​IMG]
     
    Last edited: Jul 18, 2011
  3. AaronsDad

    AaronsDad Member

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    Thanks for replying. I am getting a box that says "2 audio files with similar filename found ". Should I check both boxes or uncheck both or just check one? Thanks again for the help
     
  4. attar

    attar Senior member

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    This was transcribed from a tape to a DVD and it had two audio tracks?
    You can check both and when you go to edit the audio it should have buttons to click for each track.
     
  5. AaronsDad

    AaronsDad Member

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    Yeah, I transferred it from one of my video tapes. I'm not sure why it's saying it has to similar audio tracks. I'll see what happens. Thanks again for the help
     
  6. AaronsDad

    AaronsDad Member

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    Ok, I'm not doing something right. I just went through the process and it still only has audio coming from one speaker
     
  7. attar

    attar Senior member

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    Drag one of the VOB files onto MediaInfo and look at the audio - compare it to the original.
    This image shows a video with a single channel and one with stereo.


    [​IMG]
     
  8. AaronsDad

    AaronsDad Member

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    Let me get back to you tomorrow about this. I don't want you to think I have forgot. Thanks again for the help
     
  9. AaronsDad

    AaronsDad Member

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    Ok. I checked one of the vob files from the original and it says 1 audio stream: AC-3 and then it says first audio stream, 2 channels, AC-3
     
  10. attar

    attar Senior member

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    So the audio stream that only comes out of one speaker has two channels (stereo)?

    It would seem that one of the channels is silent?

    If you wish to pursue it, download Audacity.
    Run it and click 'Edit' > 'Preferences' > 'Libraries'.
    Assuming that you don't have them (try 'locate' first), download the mp3 and ffmpeg plugins.

    http://www.videohelp.com/tools/Audacity

    After that, drag the VOB file into the window.
    Look to see if there are two channels and see if both have a waveform.
    If one is a flat line, you know that there is a problem.

    Should look similar to this if both are good.

    [​IMG]
     
    Last edited: Jul 20, 2011
  11. AaronsDad

    AaronsDad Member

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    Well for some reason the bottom one has a straight line across it
     
  12. attar

    attar Senior member

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    That would be why you can't get anything out of that channel.
    To fix it you can demux the video and audio to separate streams, correct the audio in Audacity and export it as a new file, then you mux the video and new audio back together into a new DVD and burn it to disk.
    It's relatively simple to do if you want to try it.
     
  13. AaronsDad

    AaronsDad Member

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    That sounds great. I know how to do it all besides muxing it back together. Would you happen to have any suggestions on that part? Thanks again for all the help
     
  14. attar

    attar Senior member

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    MuxMan can take demuxed .m2v and .ac3 and create a new DVD folder.
     
  15. AaronsDad

    AaronsDad Member

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    Isn't that one of the programs that comes with avstodvd?
     
  16. attar

    attar Senior member

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    Yes, the AvstoDVD package has all the good ones.
     
  17. AaronsDad

    AaronsDad Member

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    One last question. What program would you recommend to de-mux the video and audio with? I usually just use TMPGEnc, then I've just figured out that I split the stereo to mono which will give me sound out of both speakers, using audacity. I save that file and the mux the files back together using Mux Man. Anyhow, if you might know of a better program to de-mux the video and audio I would appreciate any suggestions. Thanks again for all the help
     
  18. attar

    attar Senior member

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    PGCDemux - included with AvsToDVD

    [​IMG]

    If you have chapters, you can save them from PgcDemux (Celltimes.txt)and load them in Muxman with 'File' > Import Chapter

    You may want to 'Check a/v delay' in PgcDEmux - if it exists you can insert the delay factor in MuxMan.
     
    Last edited: Jul 25, 2011
  19. AaronsDad

    AaronsDad Member

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    Thanks for all the help ;)
     

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