时间：2021-07-01 10:21:17 帮助过：21人阅读
opti
$this->options = array_filter($options) + $this->options;
$this->ffmpeg=$ffmpeg; //ffmpeg路径
$this->backup=$backup;
}
//获取视频信息
function video_info($file)
{
ob_start();
passthru(sprintf($this->ffmpeg . ' -i "%s" 2>&1', $file));//ffmpeg -i test.avi 2>&1
$info = ob_get_contents();
ob_end_clean();
// 通过使用输出缓冲，获取到ffmpeg所有输出的内容。
$ret = array();
// Duration: 01:24:12.73, start: 0.000000, bitrate: 456 kb/s
if (preg_match("/Duration: (.*?), start: (.*?), bitrate: (\d*) kb\/s/",$info, $match))
{
$ret['duration'] = $match[1]; // 提取出播放时间
$da = explode(':', $match[1]);
$ret['seconds'] = $da[0] * 3600 + $da[1] * 60 + $da[2]; // 转换为秒
$ret['start'] = $match[2]; // 开始时间
$ret['bitrate'] = $match[3]; // bitrate 码率 单位 kb
}
// Stream #0.1: Video: rv40, yuv420p, 512x384, 355 kb/s, 12.05 fps, 12 tbr, 1k tbn, 12 tbc
if (preg_match("/Video: (.*?), (.*?), (.*?)[,\s]/", $info, $match))
{
$ret['vcodec'] = $match[1]; // 编码格式
$ret['vformat'] = $match[2]; // 视频格式
$ret['resolution'] = $match[3]; // 分辨率
$a = explode('x', $match[3]);
$ret['width'] = $a[0];
$ret['height'] = $a[1];
}
// Stream #0.0: Audio: cook, 44100 Hz, stereo, s16, 96 kb/s
if (preg_match("/Audio: (\w*), (\d*) Hz/", $info, $match))
{
$ret['acodec'] = $match[1]; // 音频编码
$ret['asamplerate'] = $match[2]; // 音频采样频率
}
if (isset($ret['seconds']) && isset($ret['start']))
{
$ret['play_time'] = $ret['seconds'] + $ret['start']; // 实际播放时间
}
$ret['size'] = filesize($file); // 文件大小
return $ret;
}
function convert()
{
$verifyToken = md5('unique_salt' . $this->options['timestamp']);
if ($verifyToken == $this->options['token'])
{
$orgFile = $this->options['org_path'] . $this->options['org'];
$setting=' ';
if(isset($this->options['video_size']))
$setting=$setting.'-vf scale="'.$this->options['video_size'].'"';
$mp4 = $this->ffmpeg . ' -i ' . $orgFile . ' -ss 00:01:02 -vcodec libx264 -strict -2 '.$setting.' ' . $this->options['mp4_path_temp'] . $this->options['org'] . ''; //转换视频
exec($mp4);
if(isset($this->options['watermark'])){
$watermark=' "'.$this->options['watermark'].'" ';
$mp4 = $this->ffmpeg.' -i '.$this->options['mp4_path_temp'] . $this->options['org'] . ''.' -vf '.$watermark.' '.$this->options['mp4_path'] . $this->options['org'] . ''; //增加水印
exec($mp4);
@unlink($this->options['mp4_path_temp'] . $this->options['org'] . '');
}
$duration = $this->video_info($orgFile);
$seconds = intval($duration['seconds']);
$offset = intval($seconds / 21); //截图间隔 秒
$thumbs = explode(',', $this->options['thumb_size']);
for ($i = 0; $i <= count($thumbs); $i++)
{
$targetPath = $this->options['thumb_path'] . $this->options['org'] . '/';
if (!file_exists($targetPath))
@mkdir(rtrim($targetPath, '/'), 0777);
if ($i == 0)
{
$time = 1;
$name = $i == 0 ? 'default.jpg' : $i . '.jpg';
$img_size = $this->options['main_size'];
}
else
{
$time = $i * $offset;
$name = $i . '.jpg';
$img_size = $thumbs[$i-1];
}
$jpg = $this->ffmpeg . ' -i ' . $orgFile . ' -f image2 -ss ' . $time . ' -vframes 1 -s ' . $img_size . ' ' . $targetPath . $name; //截图
@exec($jpg);
}
//复制文件到对应的FTP服务器
$ftp_server = pc_base::load_config('ftp_server');
$remote_server = $_POST['remote_server'];
$ftp_server = $ftp_server[$remote_server];
if($ftp_server['ftp_server'])
pc_base::ftp_upload($orgFile,
$ftp_server['ftp_server'],
$ftp_server['ftp_user_name'],
$ftp_server['ftp_user_pass']);
//备份到所有FTP服务器
if($this->backup){
$ftp_backup = pc_base::load_config('ftp_backup');
foreach ($ftp_backup as $v)
{
pc_base::ftp_upload( $orgFile,
$ftp_backup['ftp_server'],
$ftp_backup['ftp_user_name'],
$ftp_backup['ftp_user_pass']);
}
}
$result['url']=$ftp_server['ftp_server']['http_address']. $this->options['mp4_path'] . $this->options['uniqid'] . '.mp4';//记录视频播放地址
$result['uniqid']=$this->options['uniqid'];
$result['videoTime'] = $this->video_info($orgFile);
$result['videoTime'] = $result['videoTime']['seconds'];
return $result;//返回处理结果
}
else
die('验证失败！');
}
}
?>参考
http://www.fieryrain.com/blog/FFMPEG_VIDEO_TIME
http://keren.iteye.com/blog/1773536
http://www.cnblogs.com/dwdxdy/p/3240167.html
http://www.cnblogs.com/chen1987lei/archive/2010/12/03/1895242.html
以上就介绍了 一个FFMPEG视频转换的PHP类，包括了方面的内容，希望对PHP教程有兴趣的朋友有所帮助。