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 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;
class FfmpegVideo
{
public $ffmpeg = 'ffmpeg';
public function __construct($ffmpeg = null)
{
if ($ffmpeg) {
$this->ffmpeg = $ffmpeg;
}
}
public function titleMod($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;
}
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;
}
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;
}
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;
}
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;
}
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;
}
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;
}
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;
}
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';
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;
}
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;
}
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;
}
public function createTemporaryFile()
{
$basePath = sys_get_temp_dir();
if (false === $file = @tempnam($basePath, null)) {
throw new ServerErrorHttpException('Unable to generate a temporary filename');
}
return $file;
}
public function getAttributes($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
);