php+ffmpeg: rotate all videos in a directory by specified degrees

rotate_videos_in_directory.php

<?php

// Requires FFMPEG to be installed and globally available
// Been using this to rotate videos shot on a phone with dead sensors

if (!$argv['1']) { exit("php rotate_360.php input_dir output_dir degress_to_rot"); }

$input_dir = $argv['1'];
$output_dir = $argv['2'];
if (!file_exists($output_dir)) { @mkdir($output_dir); }
$degress = !empty($argv['3']) ? $argv['3'] : 360;

$files = glob("{$input_dir}/*.mp4");
foreach ($files as $key => $file) {
	$filename = pathinfo($file, PATHINFO_FILENAME); // outputs nameonly
	$command = "ffmpeg -i {$input_dir}/{$filename}.mp4 -c copy -metadata:s:v:0 rotate={$degress} {$output_dir}/{$filename}-out.mp4";
	echo $command . "\n";
	shell_exec($command);
}