php如何利用ffmpeg获取视频第一帧为缩略图

php ffmpeg获取视频缩略图

1.环境

• centos 7

• ffmpeg version 2.8.15 Copyright

2.centos7安装ffmpeg

centos7安装ffmpeg

sudo rpm --import http://li.nux.ro/download/nux/RPM-GPG-KEY-nux.ro
sudo rpm -Uvh http://li.nux.ro/download/nux/dextop/el7/x86_64/nux-dextop-release-0-5.el7.nux.noarch.rpm

sudo yum install ffmpeg ffmpeg-devel -y

【Ubuntu安装ffmpeg】

sudo add-apt-repository ppa:kirillshkrogalev/ffmpeg-next

sudo apt-get update

sudo apt-get install ffmpeg

查看环境变量是否配置成功

ffmpeg -version

3.项目安装ffmpeg包

composer require php-ffmpeg/php-ffmpeg

github链接https://github.com/PHP-FFMpeg/PHP-FFMpeg

4.php代码

<?php
include '../vendor/autoload.php';
use FFMpeg\FFMpeg;
class MyFfmpeg
{
   public function run()
   {
       $file_path = __DIR__ . '/' . uniqid() . '.jpg';

$ffmpeg = FFMpeg::create([
           'ffmpeg.binaries' => '/usr/bin/ffmpeg',
           'ffprobe.binaries' => '/usr/bin/ffprobe'
       ]);
       $video = $ffmpeg->open('1.mp4');
       $video->frame(\FFMpeg\Coordinate\TimeCode::fromSeconds(1))->save($file_path);
   }
}

$a = new MyFfmpeg();
$a->run();

附Fmpeg读取视频信息

<?php
define('FFMPEG_PATH', '/usr/local/ffmpeg2/bin/ffmpeg -i "％s" 2>&1');

function getVideoInfo($file) {

$command = sprintf(FFMPEG_PATH, $file);

ob_start();
 passthru($command);
 $info = ob_get_contents();
 ob_end_clean();

$data = array();
 if (preg_match("/Duration: (.*?), start: (.*?), bitrate: (\d*) kb\/s/", $info, $match)) {
   $data['duration'] = $match[1]; //播放时间
   $arr_duration = explode(':', $match[1]);
   $data['seconds'] = $arr_duration[0] * 3600 + $arr_duration[1] * 60 + $arr_duration[2]; //转换播放时间为秒数
   $data['start'] = $match[2]; //开始时间
   $data['bitrate'] = $match[3]; //码率(kb)
 }
 if (preg_match("/Video: (.*?), (.*?), (.*?)[,\s]/", $info, $match)) {
   $data['vcodec'] = $match[1]; //视频编码格式
   $data['vformat'] = $match[2]; //视频格式
   $data['resolution'] = $match[3]; //视频分辨率
   $arr_resolution = explode('x', $match[3]);
   $data['width'] = $arr_resolution[0];
   $data['height'] = $arr_resolution[1];
 }
 if (preg_match("/Audio: (\w*), (\d*) Hz/", $info, $match)) {
   $data['acodec'] = $match[1]; //音频编码
   $data['asamplerate'] = $match[2]; //音频采样频率
 }
 if (isset($data['seconds']) && isset($data['start'])) {
   $data['play_time'] = $data['seconds'] + $data['start']; //实际播放时间
 }
 $data['size'] = filesize($file); //文件大小
 return $data;
}

//用法
$video_info = getVideoInfo('video.mp4');
print_r($video_info);
?>

来源：https://blog.csdn.net/gusijin/article/details/122712551