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Sur d’autres sites (15639)

  • Video rotation with FFmpeg

    6 mars 2016, par haresh

    I’m developing a PHP web service for my iPhone app in order for the users to upload videos. When users want to see a video on the site they get a horizontal video, so I need rotate the video using FFmpeg commands. Can someone help me ?

    function make_rotation($input, $output, $transpose="1") {
    
    $ffmpegpath = "ffmpeg";
    
    if(!file_exists($input)) return false;  
    
    //$command = "$ffmpegpath -i $input -vf 'transpose=$transpose' $output";
    
    //$command = "ffmpeg -vfilters 'rotate=270' -i $input $output";
    
    $command ="ffmpeg -i $input -vf 'transpose=$transpose'  $output";
    
    exec($command);
    
    return true;
    
}

    Thanks All

  • ffmpeg -vf transpose not working for output as .mp4 file

    5 août 2014, par user3909162

    I want to rotate iPhone/iPad video to 90 degree, i am using following code

    $input = 'video1.mp4';
    
$output = 'output.mp4';
    

    
$command = "ffmpeg -i $input -vf transpose=1 $output";
    
exec( $command, $ret );

    the above code is not working for

    $output = 'output.mp4'; //(mp4 file)

    but its working fine when i use

    $output = 'output.avi'; //(avi file)

    Please tell me solution for this i want also compress video in mp4 video.

  • using FFMPEG to convert to MP4 with maximum browsers compatibilty

    6 mars 2016, par Karim

    I’m converting from WMV to FLV using FFMPEG, and my problem is that the FLV videos are so big ! the 15 minutes video’s size ranges between 150MB and 1GB !
    I’m using the following FFMPEG command to convert and split WMV videos :

    nohup nice -1 ffmpeg -y -ss 00:00:00 -t 00:15:00 -async 1 -i INPUT.WMV -acodec libmp3lame OUTPUT.FLV

    And I’ve tried converting to MP4 before and the video size was much smaller than the FLV video.

    So my questions are :

    • Would the MP4 videos have any
      compatibility issues browsers ?
    • Would it work on iPhone, iPad ? (I
      know FLV videos doesn’t work on
      iPhones or iPads)
    • What is the best FFMPEG command to
      convert to MP4 without losing the
      quality of the video ?

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