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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\Format; |
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final class X264 extends StreamFormat |
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{ |
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private const MODULUS = 2; |
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/** |
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* X264 constructor. |
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* @param string $video_codec |
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* @param string $audio_codec |
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* @param bool $default_init_opts |
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*/ |
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public function __construct($video_codec = 'libx264', string $audio_codec = 'aac', bool $default_init_opts = true) |
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{ |
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$this |
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->setVideoCodec($video_codec) |
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->setAudioCodec($audio_codec); |
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/** |
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* set the default value of h264 codec options |
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* see https://ffmpeg.org/ffmpeg-codecs.html#Options-28 for more information about options |
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* return array |
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*/ |
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if ($default_init_opts) { |
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$this->setAdditionalParameters([ |
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'bf' => 1, |
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'keyint_min' => 25, |
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'g' => 250, |
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'sc_threshold' => 40 |
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]); |
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} |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getAvailableAudioCodecs() |
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{ |
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return ['aac', 'libvo_aacenc', 'libfaac', 'libmp3lame', 'libfdk_aac']; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getAvailableVideoCodecs() |
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{ |
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return ['libx264', 'h264', 'h264_afm', 'h264_nvenc']; |
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} |
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/** |
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* @return int |
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*/ |
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public function getModulus() |
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{ |
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return static::MODULUS; |
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} |
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/** |
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* Returns true if the current format supports B-Frames. |
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* |
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* @see https://wikipedia.org/wiki/Video_compression_picture_types |
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* |
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* @return Boolean |
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*/ |
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public function supportBFrames() |
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{ |
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return true; |
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} |
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} |
aminyazdanpanah /
PHP-FFmpeg-video-streaming
