php实现ffmpeg处理视频的实践

最近有一个项目需要使用ffmpeg处理视频，这里我写了一个demo，方便我们来实现视频操作

ffmpeg操作demo

<?php

namespace commonhelpers;

use commonmodelsConfig;
use commonmodelsVideoApiLog;
use Yii;
use yiihelpersArrayHelper;
use commonhelpersUniversal;
use yiihelpersFileHelper;
use yiihttpclientClient;
use yiiwebServerErrorHttpException;

/**
 * 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),
        ];
    }
}

使用简单示例

这里注意如果无法执行ffmpeg，实例化时需要传入ffmpeg的安装地址，例如linux下ffmpeg安装地址为/usr/local/ffmepg，那么实例化时需要传入/usr/local/ffmpeg/bin/ffmpeg

1：给视频添加文字

$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)
);

2：将视频设为静音

$ffmpeg = new FfmpegVideo();
$ffmpeg->audioMute(
    "XXX",//原视频
    "XXX",//处理后保存视频
);

3：视频裁剪

$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
);

4：视频拼接

$ffmpeg = new FfmpegVideo();
$ffmpeg->concatVideo(
    ["XXX", "XXX"],//需要拼接的视频
    "XXX",//处理后保存视频
);

5：将音频合并到视频中

$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)
);

6：获取视频信息(长，宽，时长)

$ffmpeg = new FfmpegVideo();
$ffmpeg->getAttributes(
    "XXX",//视频
);

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