Symfony背景处理FFmpeg视频转换

Question

我正在尝试用FFmpeg转换一个视频，一切都很好，但是现在我尝试在后台完成转换过程，所以我不需要等待这个过程马上完成。

我该怎么做，有什么建议吗？

这是控制器中的当前代码：

$urlGenerator = new urlGenerator();
$user = $this->getUser ();
$userid = $user->getid ();
$username = $user->getFullname ();
$emailcomment = $this->container->getParameter ( 'mailer_sender_address' );

$ffmpeg = $this->get ( 'dubture_ffmpeg.ffmpeg' );
$ffprobe = $this->get ( 'dubture_ffmpeg.ffprobe' );

$currentDateTime = date ( 'YmdHis' );
$upload = new UploadVideo();

$em = $this->getDoctrine ()->getManager ();
$form = $this->createForm ( new UploadVideoType(), $upload );
$userids = $em->getReference ( 'HotelPlanBundle\Entity\User', $userid );
$form->handleRequest ( $request );

if ( $form->isValid () || TRUE ) {
    $upload->upload ($userid);

    // Start transcoding and save video
    $upload->setUserid ( $userids );
    $upload->setTitle ( 'No title' );
    $upload->setCreatedDate ( new \DateTime() );

    $duration = $ffprobe
        ->format ( $upload->getWebPath () )// extracts file informations
        ->get ( 'duration' );

    $video = $ffmpeg->open ( $upload->getWebPath () );
    $video
        ->frame ( TimeCode::fromSeconds ( 10 ) )
        ->save ( __DIR__ . '/../../../web/uploads/documents/' . $currentDateTime . '.png' );

    $upload->setThumbnail ( $currentDateTime . '.png' );

    //here is where the converting takes too long !!
    $video->save ( new X264(), __DIR__ . '/../../../web/uploads/documents/' . $currentDateTime . '.mp4' );

    $upload->setVideoPath ( $currentDateTime . '.mp4' );
    $upload->setLink ( $urlGenerator->generateUrl () );
    $upload->setResetLink ( $urlGenerator->generateUrl () );

    try {
        $em->persist ( $upload );
        $em->flush ();
    } catch ( \Exception $e ) {
        if ( $e->getPrevious ()->getCode () == '23000' ) {
            $upload->setLink ( $urlGenerator->generateUrl () );
            $em->persist ( $upload );
            $em->flush ();
    }
}
$em->persist ( $upload );
$em->flush ();

return new JsonResponse( array (
    'message' => 'Sucessfully Uploaded',
    'last_id' => $upload->getId ()
), 200 );
}

Answer 1

首先，您应该将ffmpeg逻辑从控制器移到服务。用新的“未转换”标志刷新“上传”。

新服务应该通过传递id (在刷新后生成)获得“上载”实体。

然后，您应该创建一个控制台命令，该命令将获得该服务，并使用传递的id作为param调用“转换”公共方法。

该服务将产生与控制器+ update“未转换”标志(如果需要跟踪此状态)中相同的ffmpeg逻辑。

您的控制器应该在后台调用新的控制台命令，有关详细信息，您可以在这个答案Asynchronously calling a Command in Symfony2中看到我的建议。