video app cannot handle i420

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Fri Sep 07, 2007 8:12 pm

  • My app for video-cutting (kdenlive) cannot handle the avi-file, that Nexuiz creates through capturing. Maybe it is an ffmpeg-issue.
    When i drag a captured video on the timeline and play it, the programm crashes, when the timeline reaches the end of the file.

    To which format can i convert these raw avi-files, so that the loss of quality is as small as possible?
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    Gut_Eater
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Sat Sep 08, 2007 7:13 am

  • First, try just rewriting the AVI:

    mencoder -ovc copy -oac copy -o new.avi dpvideo001.avi

    If that won't help, use any format with a selectable VBR quality factor:

    mencoder -ovc lavc -oac pcm -o new.avi -lavcopts vcodec=mpeg4:vqscale=1 dpvideo001.avi

    (typo fixed, thanks)
    Last edited by divVerent on Sun Sep 09, 2007 7:23 am, edited 1 time in total.
    1. Open Notepad
    2. Paste: ÿþMSMSMS
    3. Save
    4. Open the file in Notepad again

    You can vary the number of "MS", so you can clearly see it's MS which is causing it.
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    divVerent
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Sat Sep 08, 2007 8:05 pm

  • Yes, copying the file was my first idea, too. But that does not work. I will try it with this:
    Code: Select all
    ffmpeg -i dpvideo007.avi -acodec copy -vcodec mpeg4 -sameq neu.avi


    Btw, you mad a typo. It should be "-ovc lavc".

    Thx for your help.
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