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issue with offset


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Hello all, I dont know why I'm getting this error with calculating the duration for the video, everything works fine with uploading, file is going in my database and folder, the duration of my video is ok.




here is my code:

 // video duration

            passthru("ffmpeg -i $tmp 2>&1");
            $duration = ob_get_contents();

            $search='/Duration: (.*?)[.]/';
            $duration=preg_match($search, $duration, $matches, PREG_OFFSET_CAPTURE);
//error is on this line botom
            $duration = $matches[1][0];

​//error is on this line botom
            list($hours, $mins, $secs) = split('[:]', $duration);

            //echo "Hours: ".$hours." Minutes: ".$mins." Seconds: ".$secs;
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to see what $matches actually looks like.


It returns me : "array(0) { } "


 I worked on that before weeks and It was working fine, I have some videos I added then and they have duration time. But now when I try to add some file it returns me duration 00:00:00.

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You should consider using a proper FFmpeg API (like this one) instead of scraping the data from the shell:

$ffprobe = FFMpeg\FFProbe::create();
$duration = $ffprobe
    ->format('/path/to/video/mp4') // extracts file informations
    ->get('duration');             // returns the duration property

(taken from the documentation)


If you absolutely must use the shell, use the right function. It doesn't make sense to echo the output, catch it and then write it to a variable when you can just write it to a variable:

$duration = shell_exec('ffmpeg -i '.escapeshellarg($tmp).' 2>&1');
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