<?php

$_POST['filename'] = "test/data/test3.mp4";

	if (isset($_POST['filename'])) {

		$movie_file = filter_var($_POST['filename'], FILTER_SANITIZE_STRING);

		require_once 'FFmpegAutoloader.php';

		if (!extension_loaded('ffmpeg')) {
			exit ('ffmpeg was not loaded');
		}

		$movie = new ffmpeg_movie($movie_file);

		$audio_channels = $movie->getAudioChannels();
		$audio_bitrate = $movie->getAudioBitRate();

		$original_width = $movie->getFrameWidth();	
		$original_height = $movie->getFrameHeight();
		$thumbnail_width = 293;
		$thumbnail_height = 180;

echo "Original Dimensions: " . $original_width . "x" . $original_height . "<br />";
echo "Video Bitrate: " . $movie->getVideoBitRate()  . "<br />";
echo "Audio Bitrate: " . $audio_bitrate  . "<br />";
echo "Audio Channels: " . $audio_channels  . "<br />";

		$frameCount = $movie->getFrameCount();

echo "total frames: " . $frameCount . "<br />";

		$frameIncrement = floor($frameCount / 9);

echo "frameIncrement: " . $frameIncrement . "<br />";

		$frameCounter = 0;

		while($frameCounter < 9) {

			$proceed = FALSE;

			if ($frameCounter == 0) {
				$thumbnailOf = 1;
			} else {
				$thumbnailOf = floor($frameIncrement * $frameCounter);
			}

			$frameImg = $movie->GetFrame($thumbnailOf);

			if (is_object($frameImg)) {
				$proceed = TRUE;
			} else {

				$incrementFrames = 1;

				while($incrementFrames < 20) {

					$newFrame = $thumbnailOf + $incrementFrames;

					$frameImg = $movie->GetFrame($newFrame);
					if (is_object($frameImg)) {
						$proceed = TRUE;
						break;
					}

					$incrementFrames++;

				}

			}

			if ($proceed) {

				$image = $frameImg->toGDImage();

				$ratio_orig = $original_width/$original_height;
   
				if ($thumbnail_width/$thumbnail_height > $ratio_orig) {
					$new_height = $thumbnail_width/$ratio_orig;
					$new_width = $thumbnail_width;
				} else {
					$new_width = $thumbnail_height*$ratio_orig;
					$new_height = $thumbnail_height;
				}
   
				$x_mid = $new_width/2;
				$y_mid = $new_height/2;

				$image_p = imagecreatetruecolor($thumbnail_width, $thumbnail_height);

				imagecopyresampled($image_p, $image, 0, 0, ($x_mid-($thumbnail_width/2)), ($y_mid-($thumbnail_height/2)), $thumbnail_width, $thumbnail_height, $original_width, $original_height);

				imagejpeg($image_p, 'test/data/test' . $frameCounter . '.jpg', 90);

				imagedestroy($image_p);
				imagedestroy($image);

				echo '<img src="test/data/test' . $frameCounter . '.jpg" style="margin-right: 10px; margin-bottom: 10px;">';

			}

			$frameCounter++;

		}

		echo "\r\n" . "Starting ffmpeg..." . "\r\n";

//		echo exec("ffmpeg -i " . $movie_file . " -codec:a libvorbis -b:a 128k -codec:v libvpx -b:v 600k test/data/output_medium.webm &");
//		echo exec("ffmpeg -i " . $movie_file . " -codec:a libvorbis -b:a 128k -codec:v libvpx -b:v 1200k test/data/output_high.webm &");
//		echo shell_exec("ffmpeg -i " . $movie_file . " -codec:a libfaac -b:a 128k -codec:v mpeg4 -b:v 1200k -flags +aic+mv4 test/data/output_high.mp4 &");
//		exec('ffmpeg -i ' . $movie_file . ' test/data/output_high1.mp4');

$cmd = 'ffmpeg -i ' . $movie_file . ' -vcodec libx264 -r 29.97 -g 160 -cmp 2 -subcmp 2 -mbd 2 -flags +aic+cbp+mv0+mv4 -trellis 1 -b 700k -acodec aac -strict experimental -ac ' . $audio_channels . ' -ar 44100 -ab ' . $audio_bitrate . ' -y test/data/output_high.mp4 2>&1';

exec($cmd, $output, $value);

echo "<pre>";
var_dump($output);
echo "</pre>";

		echo "\r\n" . "Done.";

	} else {
		echo 'No file selected.';
	}