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  • Can not add string to the video using ffmpeg base on PHP

    13 septembre 2016, par Hạ Tím

    I’m new in ffmpeg and I’m trying to make a demo using ffmpeg.
    Below is the PHP script

    $cmd = '"C:\Program Files\ffmpeg\bin\ffmpeg.exe" -i C:\wamp\www\vine-project\cron/tmp/t_42953497622724.mp4 --enable-libfreetype -vf "drawtext=fontfile=C:\wamp\www\demo-ffmpeg\cron/arial.ttf:text='Stack Overflow':fontcolor='Black':fontsize=19" -codec:v libx264 -codec:a copy C:\wamp\www\demo-ffmpeg\cron/tmp/text_42953497622724.mp4';
    
@exec($cmd, $output);
    
echo '<pre>';
    
print_r($output);
    
echo '</pre>';

    And then below is the result of output :

    Array
    
(
    
)

    Before, I joined multi videos and add background successfully.
    Input video file is exists.
    What is my wrong ? Are something incorrect ?
    3 cups of beer for each help :D
    Sorry for my bad English

    Thanks for attention !

  • What command convert mjpeg IP camera streaming to mp4 file with lowest CPU usage ?

    19 mars 2019, par ChanhLM

    like above question, I want find out what ffmpeg command can help me reduce cpu usage when running 50 IP camera (running same 50 command).

    My ffmpeg command :

    ffmpeg  -f mjpeg -y -use_wallclock_as_timestamps 1 -i 'http://x.x.x.x:8090/test1?.mjpg' -r 3 -reconnect 1 -loglevel 16 -c:v mjpeg -an -qscale 10 -copyts '1.mp4'

    50 command like that take my computer (4 core) 200% CPU

    I want this computer can run for 150 camera, any advise ?

    =========================================================

    using -c:v copy can make it faster but fize size is terrible

    I try slow down frame rate by 3 with -r 3 or -framerate 3 to decrease file size but not succesful (because vcodec copy can’t do that).

    Have any option to force input frame rate by 3 ?

    (sorry for my bad English)

  • What command convert mjpeg IP camera streaming to mp4 file with lowest CPU usage ?

    23 septembre 2015, par ChanhLM

    like above question, I want find out what ffmpeg command can help me reduce cpu usage when running 50 IP camera (running same 50 command).

    My ffmpeg command :

    ffmpeg  -f mjpeg -y -use_wallclock_as_timestamps 1 -i 'http://x.x.x.x:8090/test1?.mjpg' -r 3 -reconnect 1 -loglevel 16 -c:v mjpeg -an -qscale 10 -copyts '1.mp4'

    50 command like that take my computer (4 core) 200% CPU

    I want this computer can run for 150 camera, any advise ?

    =========================================================

    using -c:v copy can make it faster but fize size is terrible

    I try slow down frame rate by 3 with -r 3 or -framerate 3 to decrease file size but not succesful (because vcodec copy can’t do that).

    Have any option to force input frame rate by 3 ?

    (sorry for my bad English)

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