如何获得视频的最高可能比特率和尺寸?
How to get Highest possible bit rate and dimensions of a video?
我正在使用一个名为 pascalbaljetmedia/laravel-ffmpeg
的包
并想为视频流创建一个 HLS 播放列表。
但首先我想检查视频比特率或 width/height 看看它是 4k、1080、720 等
那么如何计算视频比特率及其尺寸?..
获取视频信息后我想做的是:
$video = FFMpeg::fromDisk('videos')
->open('original_video.mp4')
->exportForHLS();
$resolutions = [];
//check if we can make 4k version
if ( ( $bitrate >= 14000 ) || ( $width >= 3840 && $height >= 2160 ) )
{
// Then it's a 4k video
// We make a 4k version of HLS
$resolutions[] = ['q' => 14000, 'size' => [ 'w' => 3840, 'h' => 2160]];
}
//check if we can make HD version
if( ( $bitrate >= 5800 ) || ( $width >= 1920 && $height >= 1080 ) )
{
// Then it's a HD video
// We make a HD version of HLS
$resolutions[] = ['q' => 5800, 'size' => [ 'w' => 1920, 'h' => 1080]];
}
//Lastly we loop through and add formarts
foreach($resolutions as $resolution){
$video->addFormat($resolution['q'], function($media) {
$media->addFilter('scale='. $resolution['size']['w].':'. $resolution['size']['h]);
});
}
$video->save('video_name.m3u8');
有什么帮助吗?
我不使用 Laravel,但看起来 pascalbaljetmedia/laravel-ffmpeg
是 php-ffmpeg/php-ffmpeg
的包装器,因此您应该可以使用 FFProbe 来提取它信息。
$ffprobe = FFMpeg\FFProbe::create();
$video = $ffprobe->streams('original_video.mp4')->videos()->first();
$width = $video->get('width');
$height = $video->get('height');
$bitrate = $video->get('bit_rate');
顺便说一下,您的代码行中有几个拼写错误,应该是 $media->addFilter('scale=' . $resolution['size']['w'] . ':' . $resolution['size']['h']);
。
我正在使用一个名为 pascalbaljetmedia/laravel-ffmpeg
并想为视频流创建一个 HLS 播放列表。 但首先我想检查视频比特率或 width/height 看看它是 4k、1080、720 等
那么如何计算视频比特率及其尺寸?..
获取视频信息后我想做的是:
$video = FFMpeg::fromDisk('videos')
->open('original_video.mp4')
->exportForHLS();
$resolutions = [];
//check if we can make 4k version
if ( ( $bitrate >= 14000 ) || ( $width >= 3840 && $height >= 2160 ) )
{
// Then it's a 4k video
// We make a 4k version of HLS
$resolutions[] = ['q' => 14000, 'size' => [ 'w' => 3840, 'h' => 2160]];
}
//check if we can make HD version
if( ( $bitrate >= 5800 ) || ( $width >= 1920 && $height >= 1080 ) )
{
// Then it's a HD video
// We make a HD version of HLS
$resolutions[] = ['q' => 5800, 'size' => [ 'w' => 1920, 'h' => 1080]];
}
//Lastly we loop through and add formarts
foreach($resolutions as $resolution){
$video->addFormat($resolution['q'], function($media) {
$media->addFilter('scale='. $resolution['size']['w].':'. $resolution['size']['h]);
});
}
$video->save('video_name.m3u8');
有什么帮助吗?
我不使用 Laravel,但看起来 pascalbaljetmedia/laravel-ffmpeg
是 php-ffmpeg/php-ffmpeg
的包装器,因此您应该可以使用 FFProbe 来提取它信息。
$ffprobe = FFMpeg\FFProbe::create();
$video = $ffprobe->streams('original_video.mp4')->videos()->first();
$width = $video->get('width');
$height = $video->get('height');
$bitrate = $video->get('bit_rate');
顺便说一下,您的代码行中有几个拼写错误,应该是 $media->addFilter('scale=' . $resolution['size']['w'] . ':' . $resolution['size']['h']);
。