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Thread: FFmpeg - very bad quality in grabbing video from my desktop

  1. #1
    Join Date
    Nov 2010
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    Kazakhstan
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    Exclamation FFmpeg - very bad quality in grabbing video from my desktop

    Hi all!
    My OS - opensuse 11.3 with KDE 4 (FFmpeg version SVN-r25756)
    I have a problem, connencted with ffmpeg(I have installed it from source). I try to grab video from my desktop, but when i run ffmpeg grabbing:

    Code:
    ffmpeg -t 120 -f x11grab -r 25 -s sxga -i :0.0 -f oss -i /dev/dsp -f avi /home/stalker_m6/Файлы/видео/desktop.avi
    I get very bad quality, so i try to run grabbing with another codec - h264 :

    Code:
    ffmpeg -t 120 -f x11grab -r 25 -s sxga -i :0.0 -f oss -i /dev/dsp -vcodec libx264 -f avi /home/stalker_m6/Файлы/видео/desktop.avi
    and get second problem:

    Code:
    x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64 x264 [info]: profile High, level 1.0 error segmentation
    So, i understand that my processor is not suitable with ffmpeg

    Who know how to solve this problem please reply me! Or say alternative of grabbing video from desktop.

  2. #2
    Join Date
    Nov 2010
    Location
    Kazakhstan
    Posts
    3

    Default Re: FFmpeg - very bad quality in grabbing video from my desktop

    Sorry, i have made a mistake
    i understand that my processor is not suitable with libx264

  3. #3
    Join Date
    Mar 2010
    Location
    Austin - Texas
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    Smile Re: FFmpeg - very bad quality in grabbing video from my desktop

    I seem to have several such files loaded from Packman, they end with -72, -88, -98 and -107. You know I have a script file you can download to check your multimedia setup located here:

    MMCHECK - Check Your Multimedia in 10 Steps - Script File, as proposed by RedDwarf

    Message #40 has the most recent script you can download. Check it out.

    Thank You,
    My Blog: https://forums.opensuse.org/blogs/jdmcdaniel3/

    Software efficiency halves every 18 months, thus compensating for Moore's Law

    Its James again from Austin, Texas

  4. #4
    Join Date
    Jan 2009
    Location
    Switzerland
    Posts
    1,529

    Default Re: FFmpeg - very bad quality in grabbing video from my desktop

    I get very bad quality
    Use the -b option to set a decent bitrate. The built in default is much too low.
    Technology is 'stuff that doesn't work yet.' -- Bran Ferren

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