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  1. Member
    Join Date
    Apr 2008
    Location
    Spain
    Search Comp PM
    Dear all,

    I have movie.wmv that is working fine, audio and video synchronized.
    And it goes though FFMPEG to become movie.swf or .flv:

    ffmpeg -i movie.wmv -ab 64 -ar 22050 -b 9570 -r 29.97 -s 256x188 -y movie.swf

    I obtain movie.swf (or movie.flv) and it is then when I play the swf or flv that the video starts later than the audio.

    Then, I am doing:
    ffmpeg -i movie.wmv -itsoffset 00:00:04 -i movie.wmv -ab 64 -ar 22050 -b 9570 -r 29.97 -s 256x188 -y movie.swf

    and movie.swf is desynchronized once again.

    If I do:
    ffmpeg -i movie.wmv -itsoffet delay -i movie.wmv -map 0: x -map 1:y ľab 64 -ar 22050 -b 9570 -r 29.97 -s 256x188 -y movie.swf

    nothing happens.

    What am I doing wrong?

    Zillions of thanks!

    Note: using FFMEG.exe and executing through a PHP script, all in a Linux based web host
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  2. Banned
    Join Date
    Jun 2007
    Location
    UNREACHABLE
    Search Comp PM
    ASF/WMV usually means variable framerate and may contain
    variable samplerate audio --- the adequate scenario for sync problems
    after format conversion.

    Note: using FFMEG.exe and executing through a PHP script, all in a Linux based web host
    Perhaps you will have to choose a container
    less unfriendly than ASF.
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