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Mp4 Audio Sync Problems?

Discussion in 'Other video questions' started by chr1831, Jul 27, 2008.

  1. chr1831

    chr1831 Member

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    I am trying to convert a wedding dvd for a friend and put it on his ipod... but the problem is the audio is about -100ms off from the video so i was wondering how can i fix this (i used handbreak (svn snapshot) to make it into an mp4)

    -Chris
     
  2. attar

    attar Senior member

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    You can use 'Yamb' to demux the audio/video then remux them and insert a value in the delay box to correct the sync.


    Choose 'Editing' => '...Extract streams...'
    Load the mp4 and highlight stream.
    'Extract all streams to raw...' and save the elementary stream output.
    Go back to 'Creation' => 'Create an mp4...'
    Add the demuxed elementary streams (not the source .mp4 file).
    Highlight the video stream and click on 'Properties'.
    Insert the 'Frame Rate' and a value for 'Media delay'.
    Choose an output path and file name and proceed to create the new file.

    Note:the frame rate should be the same video frame rate as the original mp4.
    You can get this information by dragging the original mp4 onto 'MediaInfo'



    http://www.afterdawn.com/software/video_software/video_tools/yamb.cfm

    http://www.afterdawn.com/software/audio_software/mp3_tools/mediainfo.cfm
     

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