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  1. Member
    Join Date: Mar 2006
    Location: United States
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    Im trying to put an FLV file in an MP4 container i extracted using FLVExtract i have tried yamb and mymp4box and each time audio is out of sync

    i dont think im doing anything wrong is there any other tools i can use, keep in my mind im new to this so play a little dumb with me im just trying to find out the best way to do this on going for my flv files
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  2. vanished El Heggunte's Avatar
    Join Date: Jun 2009
    Location: Misplaced Childhood
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    Probably your .FLV has variable framerate.

    This is what I would try:

    a) remux the FLV to an MKV

    b) extract the video timestamps to a timecodes.txt

    c) use mp4fpsmod ( https://sites.google.com/site/qaacpage/cabinet )

    Possibly someone will know a faster and less-convoluted way
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  3. I'm a MEGA Super Moderator Baldrick's Avatar
    Join Date: Aug 2000
    Location: Sweden
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    Check first if they are VFR/Variable FrameRate with mediainfo.

    And if they are you must do as el heggunte mentions....or find another source...or a portable flv player.
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  4. Member
    Join Date: Mar 2006
    Location: United States
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    How do i remux to mkv sorry im a noob to this if i remux to mkv and that works im fine with stopping there it doesnt need to be mp4 could be either one
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  5. Member
    Join Date: Mar 2006
    Location: United States
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    and yes its variable
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  6. vanished El Heggunte's Avatar
    Join Date: Jun 2009
    Location: Misplaced Childhood
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  7. Member
    Join Date: Mar 2006
    Location: United States
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    Thank you that seemed to have worked
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