php实现ffmpeg处理视频的实践

<?php

namespace common\helpers;

use common\models\config;
use common\models\videoapilog;
use yii;
use yii\helpers\arrayhelper;
use common\helpers\universal;
use yii\helpers\filehelper;
use yii\httpclient\client;
use yii\web\servererrorhttpexception;

/**
 * ffmpeg视频处理
 *
 * @author wangjian
 * @since 0.1
 */
class ffmpegvideo
{

    public $ffmpeg = 'ffmpeg';


    public function __construct($ffmpeg = null)
    {
        if ($ffmpeg) {
            $this->ffmpeg = $ffmpeg;
        }
    }


    /**
     * 添加视频文字滚动
     * @param $source string 视频
     * @param $savefile string 保存文件
     * @param $text string 水印文字
     * @param array $options 水印样式
     * @param int $step 每秒步长
     * @param int $star 出现时间
     */
    public function titlemod($source, $savefile, $text, $options = [], $step = 20, $star = 0)
    {
        $command = $this->ffmpeg .' -y -i '. $source .' -async 1 -metadata:s:v:0 start_time=0 -vf ';

        $fonts = yii::getalias('@webroot') . "/fonts/simsun.ttc";
        $fonts = str_replace('\\', '/', $fonts);
        $fonts = str_replace(':', '\\:', $fonts);
        $command .= '"drawtext=fontfile=\''. $fonts .'\': text=\''. $text .'\'';

        foreach ($options as $key => $value) {
            $command .= ':' . $key . '=' . $value;
        }

        $command .= ':x=\'if(gte(t,'. $star .'),((t-'. $star .') * '. $step .'),nan)\'';

        $command .= '" ';
        $command .= $savefile;
        exec($command, $output, $result_code);
        if ($result_code == 0) {
            return true;
        }
        return  false;
    }


    /**
     * 图片水印
     * @param $source string 视频
     * @param $savefile string 保存文件
     * @param $waterimage string 水印图片
     * @param $left integer 水印水平位置
     * @param $top integer 水印垂直位置
     * @param null $star 水印开始时间
     * @param null $duration 水印时长
     */
    public function imagewater($source, $savefile, $waterimage, $left, $top, $star = null, $duration = null)
    {
        $waterimage = str_replace('\\', '/', $waterimage);
        $waterimage = str_replace(':', '\\:', $waterimage);
        $command = $this->ffmpeg . ' -y -i '. $source .' -vf "movie=\''. $waterimage .'\'[watermark];';
        $command .= '[in][watermark] overlay='. $left .':'. $top;
        if ($star) {
            $end = ($duration) ? $star + $duration : $star;
            $command .= ':enable=\'between(t,'. $star .','. $end .')\'';
        }
        $command .= '[out] " ' . $savefile;
        exec($command, $output, $result_code);
        if ($result_code == 0) {
            return true;
        }
        return  false;
    }


    /**
     * 给视频添加文字水印
     * @param $source string 视频
     * @param $savefile string 保存文件
     * @param $text string 水印文字
     * @param array $options 水印样式
     * @param null $star 水印开始时间
     * @param null $duration 水印时长
     */
    public function titlewater($source, $savefile, $text, $options = [], $star = null, $duration = null)
    {
        $command = $this->ffmpeg .' -y -i '. $source .' -vf ';
        $fonts = yii::getalias('@webroot') . "/fonts/stzhongs.ttf";
        $fonts = str_replace('\\', '/', $fonts);
        $fonts = str_replace(':', '\\:', $fonts);
        $command .= '"drawtext=fontfile=\''. $fonts .'\': text=\''. $text .'\'';

        foreach ($options as $key => $value) {
            $command .= ':' . $key . '=' . $value;
        }
        if ($star) {
            $end = ($duration) ? $star + $duration : $star;
            $command .= ':enable=\'between(t,'. $star .','. $end .')\'';
        }
        $command .= '" ';
        $command .= $savefile;

        exec($command, $output, $result_code);
        if ($result_code == 0) {
            return true;
        }
        return  false;
    }

    /**
     * 将音频合并到视频中
     * @param $videofile string 视频文件
     * @param $audiofile string 音频文件
     * @param $savefile string 保存文件
     * @param $delay integer 声音插入延时秒数
     */
    public function mergevideoaudio($videofile, $audiofile, $savefile, $delay = null)
    {
        $delaytime = 0;
        if ($delay) {
            $delaytime = $delay * 1000;
        }
        $command =  $this->ffmpeg . ' -y -i '. $audiofile .' -i '. $videofile .' -c:v copy -c:a aac -strict experimental -filter_complex "[0]adelay='. $delaytime .'|'. $delaytime .'[del1],[1][del1]amix" ' . $savefile;
        exec($command, $output, $result_code);
        if ($result_code == 0) {
            return true;
        }
        return  false;
    }


    /**
     * 静音
     */
    public function audiomute($source, $savefile)
    {
        $command =  $this->ffmpeg . ' -y -i '. $source .' -filter:a "volume=0" ' . $savefile;
        exec($command, $output, $result_code);
        if ($result_code == 0) {
            return true;
        }
        return  false;
    }


    /**
     * 提取视频的音频
     * @param $source string 需要提取声音的视频
     * @param $savefile string 提取声音后保存的音频
     * @return bool
     */
    public function collectaudio($source, $savefile)
    {
        $command =  $this->ffmpeg . ' -y -i '. $source .' -vn -acodec copy ' . $savefile;
        exec($command, $output, $result_code);
        if ($result_code == 0) {
            return true;
        }
        return  false;
    }

    /**
     * 去除视频声音
     * @param $source string 需要去除声音的视频
     * @param $savefile string 去除声音后保存的视频
     */
    public function removeaudio($source, $savefile)
    {
        $command =  $this->ffmpeg . ' -y -i '. $source .' -an ' . $savefile;

        exec($command, $output, $result_code);
        if ($result_code == 0) {
            return true;
        }
        return  false;
    }

    /**
     * 视频拼接
     * @param $sources array 需要拼接的视频/音频
     * @param $savefile string 拼接后的视频/音频
     */
    public function splicevideo($sources, $savefile)
    {
        $commands = [];
        $temporaryfile = [];
        $basepath = sys_get_temp_dir();
        $index = 0;
        foreach ($sources as $i => $source) {
            $file = $basepath . '/' . $i . '.ts';
            $commands[$index] = $this->ffmpeg . ' -y -i '. $source .' -vcodec copy -acodec copy -vbsf h264_mp4toannexb ' . $file;
            $temporaryfile[] = $file;
            $index++;
        }
        $commands[$index] = $this->ffmpeg . ' -y -i "concat:'. implode('|', $temporaryfile) .'"  -acodec copy -vcodec copy -absf aac_adtstoasc ' . $savefile;
        foreach ($commands as $command) {
            exec($command, $output, $result_code);
        }

        foreach ($temporaryfile as $file) {
            @unlink($file);
        }
        return true;

    }


    /**
     * 视频剪切
     * @param $source string 需要剪切视频/音频
     * @param $savefile string 剪切后保存视频/音频
     * @param $star string 剪切开始时间
     * @param null $duration string 剪切时长
     */
    public function clipvideo($source, $savefile, $star, $duration = null)
    {
        $command = $this->ffmpeg . ' -y -ss '. $star;
        if ($duration) {
            $command .= ' -t '. $duration;
        }
        $command .= ' -i '. $source .' -acodec copy ' . $savefile;
        exec($command, $output, $result_code);
        if ($result_code == 0) {
            return true;
        }
        return  false;
    }

    const rotate_90 = 'transpose=1';
    const rotate_180 = 'hflip,vflip';
    const rotate_270 = 'transpose=2';

    /**
     * 视频旋转
     * @param $source string 需要旋转的视频
     * @param $savefile string 旋转后视频
     * @param $rotate string 旋转角度
     */
    public function transposevideo($source, $savefile, $rotate)
    {

        $command = $this->ffmpeg . ' -y -i ' . $source . ' -vf ""transpose=1"" ' . $savefile;
        exec($command, $output, $result_code);
        if ($result_code == 0) {
            return true;
        }
        return  false;
    }

    /**
     * 视频转码
     * @param $source string 需要转码的视频/音频
     * @param $savefile string 转码后的视频/音频
     */
    public function acodecvideo($source, $savefile)
    {
        $command = $this->ffmpeg . ' -y -i '. $source .' -acodec copy -vcodec copy -f mp4 ' . $savefile;
        exec($command, $output, $result_code);
        if ($result_code == 0) {
            return true;
        }
        return  false;
    }

    /**
     * 视频拼接
     * @param $sources array 需要拼接的视频/音频
     * @param $savefile string 拼接后的视频/音频
     */
    public function concatvideo($sources, $savefile)
    {
        $file = $this->createtemporaryfile();
        $filestream = @fopen($file, 'w');
        if($filestream === false) {
            throw new servererrorhttpexception('cannot open the temporary file.');
        }

        $count_videos = 0;
        if(is_array($sources) && (count($sources) > 0)) {
            foreach ($sources as $videopath) {
                $line = "";
                if($count_videos != 0)
                    $line .= "\n";
                $line .= "file '". str_replace('\\','/',$videopath) ."'";

                fwrite($filestream, $line);
                $count_videos++;
            }
        }
        else {
            throw new servererrorhttpexception('the list of videos is not a valid array.');
        }

        $command = $this->ffmpeg .' -y -f concat -safe 0 -i '. $file . ' -c copy ' . $savefile;
        exec($command, $output, $result_code);
        fclose($filestream);
        @unlink($file);//删除文件
        if ($result_code == 0) {
            return true;
        }
        return  false;
    }

    /**
     * 创建一个临时文件
     */
    public function createtemporaryfile()
    {
        $basepath = sys_get_temp_dir();
        if (false === $file = @tempnam($basepath, null)) {
            throw new servererrorhttpexception('unable to generate a temporary filename');
        }
        return $file;
    }

    /**
     * 获取视频信息
     * @param $source string 需要获取时长的资源
     */
    public function getattributes($source)
    {
        ob_start();
        $command = $this->ffmpeg . ' -i "'. $source .'" 2>&1';
        passthru($command);
        $getcontent = ob_get_contents();
        ob_end_clean();
        $duration = 0;
        $widht = 0;
        $height = 0;
        if (preg_match("/duration: (.*?), start: (.*?), bitrate: (\d*) kb\/s/", $getcontent, $match)) {
            $matchs = explode(':', $match[1]);
            $duration = $matchs[0] * 3600 + $matchs[1] * 60 + $matchs[2]; //转换播放时间为秒数
        }

        if (preg_match("/video: (.*?), (.*?), (.*?)[,\s]/", $getcontent, $match)) {
            $matchs = explode('x', $match[3]);
            $widht = $matchs[0];
            $height = $matchs[1];
        }

        return [
            'duration' => intval($duration),
            'widht' => intval($widht),
            'height' => intval($height),
        ];
    }
}

$ffmpeg = new ffmpegvideo();
$ffmpeg ->titlewater(
    'xxx',//原视频
    'xxx',//处理后保存视频
    'xxx',//文字
    [
        'x' => 30,//水平距离
        'y' => 30,//垂直距离
        'fontsize' => 20,//文字大小
        'fontcolor' => 'red',//文字颜色
        'shadowy' => 2,//文字阴影
    ],
    200,//每秒移动步长
    2//文字出现时间(秒)
);

$ffmpeg = new ffmpegvideo();
$ffmpeg->audiomute(
    'xxx',//原视频
    'xxx',//处理后保存视频
);

$ffmpeg = new ffmpegvideo();
$ffmpeg->clipvideo(
    'xxx',//原视频
    'xxx',//处理后保存视频
    0,//裁剪开始时间
    10//裁剪时长
);

$ffmpeg = new ffmpegvideo();
$ffmpeg->concatvideo(
    ['xxx', 'xxx'],//需要拼接的视频
    'xxx',//处理后保存视频
);

$ffmpeg = new ffmpegvideo();
$ffmpeg->mergevideoaudio(
    'xxx',//视频
    'xxx',//音频
    'xxx',//处理后保存视频
    0//音频插入视频延时时间(秒)
);

$ffmpeg = new ffmpegvideo();
$ffmpeg->getattributes(
    'xxx',//视频
);