/**
* convert video to mp4
*
* @param string $file
* @return void
* @author Andy Bennett
*/
public static function video_mp4($file = null)
{
if (is_null($file)) {
throw new Exception("No filepath supplied", 1);
}
if (!file_exists($file)) {
throw new Exception("Invalid filepath supplied", 1);
}
// get the filename parts
$path = pathinfo($file, PATHINFO_DIRNAME);
$filename = pathinfo($file, PATHINFO_FILENAME);
$tmp_dir = Kohana::config('ffmpeg.tmp_path');
// set the output details
$output = $path . '/' . $filename . '-c.mp4';
$infile = $file;
$options = "-vcodec libx264 -b 512k -flags +loop+mv4 -cmp 256 \\\n\t\t\t\t\t-partitions +parti4x4+parti8x8+partp4x4+partp8x8+partb8x8 \\\n\t\t\t \t\t-me_method hex -subq 7 -trellis 1 -refs 5 -bf 3 \\\n\t\t\t \t\t-flags2 +bpyramid+wpred+mixed_refs+dct8x8 -coder 1 -me_range 16 \\\n\t\t\t\t\t-r 25 -g 5 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -qmin 10 \\\n\t\t\t\t\t-qmax 51 -qdiff 4";
$str = 'cd ' . $tmp_dir . '; ' . Kohana::config('ffmpeg.binaries_path') . " -y -i {$infile} -an -pass 1 -threads 2 {$options} {$output}";
// echo( $str );
exec($str . ' 2>&1', $buffer1);
$has_audio = ffmpeg::has_audio($file);
$audio = $has_audio ? "-acodec libfaac -ar 44100 -ab 96k" : "-an";
$str = 'cd ' . $tmp_dir . '; ' . Kohana::config('ffmpeg.binaries_path') . " -y -i {$infile} {$audio} -pass 2 -threads 2 {$options} {$output}; /usr/bin/MP4Box -hint {$output}";
// echo( $str );
exec($str . ' 2>&1', $buffer2);
// qt-faststart $tmpfile $outfile
if (!file_exists($output) or !filesize($output)) {
Kohana::log('error', 'Video encoding error');
Kohana::log('error', Kohana::debug($buffer1));
Kohana::log('error', Kohana::debug($buffer2));
// var_dump( $buffer );
throw new Exception('Video conversion error');
}
return $output;
}
