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<?php |
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/** |
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* This file is part of the PHP-FFmpeg-video-streaming package. |
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* |
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* (c) Amin Yazdanpanah <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Streaming\Filters; |
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use Streaming\DASH; |
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use Streaming\Format\X264; |
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use Streaming\Representation; |
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class DASHFilter extends Filter |
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{ |
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/** |
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* @param $media |
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*/ |
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public function setFilter($media): void |
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{ |
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$this->filter = $this->DASHFilter($media); |
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} |
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/** |
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* @param DASH $dash |
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* @return array |
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*/ |
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private function DASHFilter(DASH $dash): array |
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{ |
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$filter = $this->getBaseFilters($dash, count($dash->getRepresentations())); |
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foreach ($dash->getRepresentations() as $key => $representation) { |
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$filter[] = "-map"; |
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$filter[] = "0"; |
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$filter[] = "-b:v:" . $key; |
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$filter[] = $representation->getKiloBitrate() . "k"; |
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$filter = array_merge($filter, $this->getAudioBitrate($representation, $key)); |
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if (null !== $representation->getResize()) { |
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$filter[] = "-s:v:" . $key; |
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$filter[] = $representation->getResize(); |
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} |
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} |
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if ($dash->getAdaption()) { |
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$filter[] = "-adaptation_sets"; |
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$filter[] = $dash->getAdaption(); |
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} |
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$filter = array_merge($filter, $dash->getAdditionalParams()); |
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$filter = array_merge($filter, ["-strict", $dash->getStrict()]); |
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return $filter; |
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} |
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/** |
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* @param $dash |
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* @param $count |
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* @return array |
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*/ |
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private function getBaseFilters(DASH $dash, int $count): array |
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{ |
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$path_parts = $dash->getPathInfo(); |
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$filter = [ |
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"-bf", "1", |
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"-keyint_min", "120", |
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"-g", "120", |
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"-sc_threshold", "0", |
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"-b_strategy", "0", |
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"-use_timeline", "1", |
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"-use_template", "1", |
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"-init_seg_name", ($path_parts["filename"] . '_init_$RepresentationID$.$ext$'), |
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"-media_seg_name", ($path_parts["filename"] . '_chunk_$RepresentationID$_$Number%05d$.$ext$'), |
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"-seg_duration", $dash->getSegDuration(), |
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"-f", "dash", |
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]; |
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if ($dash->getFormat() instanceof X264) { |
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$filter[] = "-profile:v:0"; |
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$filter[] = "main"; |
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while ($count > 0) { |
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$filter[] = "-profile:v:" . $count; |
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$filter[] = "baseline"; |
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$count--; |
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} |
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} |
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return $filter; |
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} |
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/** |
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* @param Representation $rep |
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* @param int $key |
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* @return array |
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*/ |
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private function getAudioBitrate(Representation $rep, int $key): array |
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{ |
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return $rep->getAudioKiloBitrate() ? ["-b:a:" . $key, $rep->getAudioKiloBitrate() . "k"] : []; |
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} |
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} |
aminyazdanpanah /
PHP-FFmpeg-video-streaming
