function cache_file_frames($vid_file_path, $fps, $start = 0, $duration = -1, $options = array(), $switches = array(), $ffmpeg = '')
{
$result = FALSE;
if ($vid_file_path && $fps && $duration && file_exists($vid_file_path)) {
$media_dimensions = get_file_info('dimensions', $vid_file_path, $ffmpeg);
// target frame size, if different from video
if (empty($options['dimensions'])) {
$options['dimensions'] = $media_dimensions;
}
// video duration, for convenience
if (empty($options['duration'])) {
$options['duration'] = get_file_info('duration', $vid_file_path, $ffmpeg);
}
$dimensions = scale_even($options['dimensions']);
$size = explode('x', $dimensions);
if (empty($options['dimensions_dir'])) {
$options['dimensions_dir'] = $dimensions;
}
$build_dir = frame_file_path($vid_file_path, $options['dimensions_dir'], $fps);
$media_duration = $options['duration'];
if ($build_dir && $media_duration && $media_dimensions && safe_path($build_dir)) {
$orig_size = explode('x', $media_dimensions);
if ($duration == -1) {
$duration = $media_duration;
if ($duration && $start) {
$duration -= $start;
}
}
$fps = floatval($fps);
$start = floatval($start);
$start_frame = ceil($fps * $start);
$duration = floatval($duration);
$media_duration = floatval($media_duration);
$media_frames = floor($media_duration * $fps);
$digits = strlen($media_frames);
$frames = 2 + ceil($fps * $duration);
$files = array();
$need_files = FALSE;
$stop_frame = $start_frame + $frames;
// print 'cacheVideoFileFrames: ' . $start_frame . ' to ' . $stop_frame . "\n";
for ($i = $start_frame; $i <= $stop_frame; $i++) {
$seq_file = $build_dir . str_pad(1 + $i, $digits, '0', STR_PAD_LEFT) . '.jpg';
$files[] = $seq_file;
if (!$need_files && !file_exists($seq_file)) {
$need_files = TRUE;
}
}
$result = array();
$result['files'] = $files;
$err = FALSE;
if ($need_files) {
$cmd = '';
$cmd .= $ffmpeg;
if ($start) {
$cmd .= ' -ss ' . $start;
}
$cmd .= ' -s ' . $orig_size[0] . 'x' . $orig_size[1];
$cmd .= ' -i ' . $vid_file_path;
$cmd .= ' -s ' . join('x', scale_proud($orig_size, $size));
if ($switches) {
$cmd .= ' ' . stringFromSwitches($switches);
}
if (empty($switches['b']) && !empty($options['bitrate'])) {
$cmd .= ' -b ' . $options['bitrate'] . 'K';
}
$cmd .= ' -an -r ' . $fps . ' -vframes ' . $frames . ' ' . $build_dir . 'build%d.jpg';
$result['command'] = $cmd;
//print $cmd;
$response = shell_command($cmd);
$result['result'] = $response;
if ($response) {
$last_file = '';
for ($i = 0; $i <= $frames; $i++) {
$frame_file = $build_dir . 'build' . (1 + $i) . '.jpg';
if (!file_exists($frame_file)) {
// ffmpeg doesn't always write every last frame
if ($last_file) {
// so we copy the last one repeatedly
if (!@copy($last_file, $frame_file)) {
$err = TRUE;
}
} else {
$err = TRUE;
}
}
if (!$err) {
$seq_file = $files[$i];
$last_file = $seq_file;
if (!@rename($frame_file, $seq_file)) {
$err = TRUE;
}
}
if ($err) {
break;
}
}
}
}
/*
if (! $err)
{
$result['duration'] = $frames / $fps;
$result['orig_dimensions'] = join('x', $orig_size);
$result['orig_extension'] = file_extension($vid_file_path);
$result['dimensions'] = join('x', $size);
$result['type'] = 'video';
$result['zeropadding'] = $digits;
$result['fps'] = $fps;
$result['orig_fps'] = get_file_info('fps', $vid_file_path, $ffmpeg);
$result['pattern'] = '%.jpg';
$result['icon'] = str_pad(1 + $start_frame + floor($frames / 2), $digits, '0', STR_PAD_LEFT) . '.jpg';
}
*/
if ($err) {
$result['files'] = '';
}
}
}
return $result;
}
function __cacheMedia()
{
$fps = floatval($this->_options['DecoderFPS']);
// cache frames for all video files used in flash
$z = sizeof($this->__mashData['timespans']);
for ($i = 0; $i < $z; $i++) {
$span = $this->__mashData['timespans'][$i];
$span_start = $span[0];
$span_end = $span[0] + $span[1];
$clips = MovieMasher_Coder_Decoder::videoBetween($this->__mashData['clips'], $span_start, $span_end);
$this->_progressStep('CacheFiles', 1 + round(30 * ($i / $z)), 'Caching Frames');
foreach ($clips as $clip) {
if (empty($clip['encode'])) {
continue;
}
$clip_trim = $this->__clipTrim($clip, $span_start, $span_end, $fps);
if (!$clip_trim) {
throw new UnexpectedValueException('Could not get clip info: ' . $clip['id']);
}
$media_tag = $this->__mashData['media'][$clip['id']];
$url = (string) $media_tag['source'];
$url = absolute_url(end_with_slash($this->_options['CoderBaseURL']), $url);
$ext = file_extension($url);
if (!$ext) {
throw new UnexpectedValueException('Media source attributes must have a file extension: ' . $url);
}
$vid_file_path = cache_url($url, $this->_options['DirCache']);
if (!$vid_file_path) {
throw new UnexpectedValueException('Could not cache URL: ' . $url);
}
$options = array();
$orig_dimensions = get_file_info('dimensions', $vid_file_path, $this->_options['PathFFmpeg']);
if (!$orig_dimensions) {
throw new RuntimeException('Could not read dimensions: ' . $vid_file_path);
}
$target_dimensions = scale_proud($orig_dimensions, $this->_options['DecoderDimensions']);
if (!$target_dimensions) {
$target_dimensions = $this->_options['DecoderDimensions'];
}
$options['dimensions'] = $target_dimensions;
$options['bitrate'] = 8000;
// max?
$options['dimensions_dir'] = $this->_options['DecoderDimensions'];
$options['duration'] = $clip['duration'];
$switches = array();
$fps_secs = floatval(1) / $this->__mashData['quantize'];
// we need an extra frame in mash's fps
if ($clip_trim['trimstart']) {
$clip_trim['trimstart'] -= $fps_secs;
$clip_trim['trimlength'] += $fps_secs;
}
$clip_trim['trimlength'] += $fps_secs;
if ($clip['speed'] != 1 || !empty($this->_options['DecoderCacheAllVideoFrames'])) {
// TODO: don't cache all the frames when speed isn't normal
$clip_trim['trimstart'] = 0;
$clip_trim['trimlength'] = -1;
}
//$this->log('Caching ' . ((string) $media_tag['label']) . ' @ ' . $this->_options['DecoderFPS'] . ' ' . $clip_trim['trimstart'] . ' -> ' . $clip_trim['trimlength']);
$cached_frames = cache_file_frames($vid_file_path, $this->_options['DecoderFPS'], $clip_trim['trimstart'], $clip_trim['trimlength'], $options, $switches, $this->_options['PathFFmpeg']);
if (!$cached_frames) {
throw new RuntimeException('Could not prepare to cache image sequence: ' . $url);
}
if (!empty($this->_options['Verbose']) && !empty($cached_frames['command'])) {
$this->log($cached_frames['command'] . "\n" . $cached_frames['result']);
}
if (!$cached_frames['files']) {
throw new RuntimeException('Could not cache image sequence: ' . $url);
}
$media_tag['url'] = 'http://' . $this->getOption('HostLocal') . '/mm.' . $this->getVersion() . '/cache/' . frame_file_path(url_file_path($url), $this->_options['DecoderDimensions'], $this->_options['DecoderFPS']);
}
}
// cache the non-flash video content
$zero = floatval(0);
$cur_time = $zero;
$z = sizeof($this->__mashData['timespans']);
for ($i = 0; $i < $z; $i++) {
if (floatgtr($this->__mashData['timespans'][$i][0], $cur_time)) {
// first timespan doesn't start where the last left off, so there is something between
$this->__cacheVisuals($cur_time, $this->__mashData['timespans'][$i][0]);
}
$cur_time = $this->__mashData['timespans'][$i][1];
$this->_progressStep('CacheFiles', 30 + (1 + round(30 * ($i / $z))), 'Caching Visuals');
}
if (!floatcmp($cur_time, $this->__mashData['duration'])) {
// last timespan doesn't end the mash, so there is stuff after it
$this->__cacheVisuals($cur_time, $this->__mashData['duration']);
}
// cache audio and video with audio files
$i = 0;
$z = sizeof(array_keys($this->__mashData['cache_urls']));
foreach ($this->__mashData['cache_urls'] as $url => $true) {
$this->_progressStep('CacheFiles', 60 + (1 + round(30 * ($i++ / $z))), 'Caching Audio');
$result = cache_url($url, $this->_options['DirCache']);
if (!$result) {
throw new RuntimeException('Could not cache audio: ' . $url);
}
}
$this->_progressStep('CacheFiles', 100, 'Cached Media');
}
function __buildSequence($file_path)
{
$this->_progressStep('EncodeVideo', 5, 'Encoding Video');
if (isset($this->_options['EncoderExtension'])) {
$options = array();
$orig_dimensions = get_file_info('dimensions', $file_path);
if (!$orig_dimensions) {
throw new RuntimeException('Could not read dimensions: ' . $file_path);
}
$target_dimensions = scale_proud($orig_dimensions, $this->_options['EncoderDimensions']);
if (!$target_dimensions) {
$target_dimensions = $this->_options['EncoderDimensions'];
}
$target_size = explode('x', $target_dimensions);
$options['bitrate'] = round($this->_options['EncoderImageQuality'] / 100 * ($target_size[0] * $target_size[1] * 3 * $this->_options['EncoderFPS'] / 1024));
$options['dimensions'] = $target_dimensions;
$options['dimensions_dir'] = $this->_options['EncoderDimensions'];
$switches = switchesFromString($this->_options['EncoderSwitches']);
$cached_frames = cache_file_frames($file_path, $this->_options['EncoderFPS'], 0, -1, $options, $switches, $this->_options['PathFFmpeg']);
if (!$cached_frames) {
throw new RuntimeException('Could not prepare to cache image sequence: ' . $file_path);
}
if (!empty($this->_options['Verbose']) && !empty($cached_frames['command'])) {
$this->log($cached_frames['command'] . "\n" . $cached_frames['result']);
}
if (!$cached_frames['files']) {
throw new RuntimeException('Could not cache image sequence: ' . $file_path);
}
$this->_progressStep('EncodeVideo', 100, 'Encoded Video');
}
}
