[PHP] 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
);