ubuntu - FFMPEG (2.5.7 ) Progress Bar from PHP -

i want have progress bar of ffmpeg encoding.this code using percentage value of encoding process.

<?php $content = @file_get_contents("with-logo/output.txt"); //echo $content; if($content) {     preg_match("/duration: (.*?), start:/", $content, $matches);      $rawduration = $matches[1];      $ar = array_reverse(explode(":", $rawduration));     $duration = floatval($ar[0]);     //echo $duration;     if (!empty($ar[1])) $duration += intval($ar[1]) * 60;     if (!empty($ar[2])) $duration += intval($ar[2]) * 60 * 60;      //get time in file encoded     preg_match_all("/time=(.*?) bitrate/", $content, $matches);      $rawtime = array_pop($matches);      //this needed if there more 1 match     if (is_array($rawtime)){$rawtime = array_pop($rawtime);}      //rawtime in 00:00:00.00 format. converts seconds.     $ar = array_reverse(explode(":", $rawtime));     $time = floatval($ar[0]);     if (!empty($ar[1])) $time += intval($ar[1]) * 60;     if (!empty($ar[2])) $time += intval($ar[2]) * 60 * 60;      //calculate progress     $progress = round(($time/$duration) * 100);      echo "duration: " . $duration . "<br>";     echo "current time: " . $time . "<br>";     echo "progress: " . $progress . "%"; } ?>  

here relevant log line form ffmpeg log files better understanding.

stream mapping:   stream #0:0 -> #0:0 (mpeg2video (native) -> h264 (libx264))   stream #0:1 -> #0:1 (pcm_s24le (native) -> aac (native)) press [q] stop, [?]  frame=   11 fps=0.0 q=0.0 size=       0kb time=00:00:00.41 bitrate=   0.9kbits/s     frame=   22 fps= 21 q=0.0 size=       0kb time=00:00:00.85 bitrate=   0.4kbits/s     frame=   33 fps= 21 q=0.0 size=       0kb time=00:00:01.30 bitrate=   0.3kbits/s     frame=   43 fps= 20 q=0.0 size=       0kb time=00:00:01.69 bitrate=   0.2kbits/s    

and code not returning value duration , result of getting php warning , code not calculating current percentage.

here php warning , getting-

php warning:  division 0 in /var/www/html/mm/progressbar.php 

i think can calculate percentage timebut have no idea, how can make work?

or solve problem duration.

thanks help!

short answer:

before run ffmpeg command here, should run following command, , give duration.

ffmpeg -i file.flv 2>&1 | grep "duration"    duration: 00:39:43.08, start: 0.040000, bitrate: 386 kb/s 

you can preg_match wtih '/duration: ([0-9]{*}):([0-9]{2}):([0-9]{2}).([0-9]{2})/' h, m, s , .s variables.

long answer

there way can handle. opposed using php-ffmpeg, work out commands need , run them directly using popen() (http://php.net/manual/en/function.popen.php) or proc_open() (http://php.net/manual/en/function.proc-open.php)

$cmd = "/path/to/ffmpeg -options"; $proc = popen($cmd, 'r'); while (!feof($proc)) {     echo fread($proc, 4096);     @flush(); } pclose($proc); 

this hold process open command runs, , grabs output screen happens.

so run twice; once duration, , second time actual conversion. can process output line line, , save progress file/database can read other processes.

remember set php timeout > time takes process file.