Symfony 怎样将视频元数据转为数组

PHP-FFMpeg

PHP-FFMpeg

ffprobe

composer require php-ffmpeg/php-ffmpeg

<?php

namespace App\Service;

use FFMpeg\FFMpeg;
use FFMpeg\FFProbe;
use FFMpeg\Exception\FFMpegException;

class VideoMetadataExtractor
{
    private FFMpeg $ffmpeg;
    private FFProbe $ffprobe;

    public function __construct(string $ffmpegBinaryPath = '/usr/bin/ffmpeg', string $ffprobeBinaryPath = '/usr/bin/ffprobe')
    {
        // 确保你的系统上安装了 ffmpeg 和 ffprobe，并配置好路径
        // 或者让库自动查找，但这在生产环境可能不够稳定
        $this->ffmpeg = FFMpeg::create([
            'ffmpeg.binaries'  => $ffmpegBinaryPath,
            'ffprobe.binaries' => $ffprobeBinaryPath,
            'timeout'          => 3600, // 1 hour
            'ffmpeg.threads'   => 12,   // Optional: Number of threads
        ]);
        $this->ffprobe = FFProbe::create([
            'ffmpeg.binaries'  => $ffmpegBinaryPath, // ffprobe 共享 ffmpeg 的二进制路径
            'ffprobe.binaries' => $ffprobeBinaryPath,
            'timeout'          => 3600,
        ]);
    }

    /**
     * 提取视频文件的关键元数据并以数组形式返回。
     *
     * @param string $videoPath 视频文件的完整路径
     * @return array 包含视频元数据的关联数组
     */
    public function extractMetadataToArray(string $videoPath): array
    {
        $metadata = [];

        try {
            // 使用 FFProbe 获取更详细的元数据
            $probe = $this->ffprobe->probe($videoPath);

            // 获取格式信息
            $format = $probe->getFormat();
            $metadata['format'] = [
                'filename'   => $format->get('filename'),
                'nb_streams' => $format->get('nb_streams'),
                'format_name' => $format->get('format_name'),
                'duration'   => $format->get('duration'), // 秒
                'size'       => $format->get('size'),     // 字节
                'bit_rate'   => $format->get('bit_rate'), // 比特率
            ];

            // 获取视频流信息
            $videoStream = $probe->getStreams()->videos()->first();
            if ($videoStream) {
                $metadata['video_stream'] = [
                    'codec_name'    => $videoStream->get('codec_name'),
                    'width'         => $videoStream->get('width'),
                    'height'        => $videoStream->get('height'),
                    'avg_frame_rate' => $videoStream->get('avg_frame_rate'),
                    'display_aspect_ratio' => $videoStream->get('display_aspect_ratio'),
                    'bit_rate'      => $videoStream->get('bit_rate'),
                    'duration'      => $videoStream->get('duration'),
                    'tags'          => $videoStream->get('tags'), // 比如旋转信息等
                ];
            }

            // 获取音频流信息
            $audioStream = $probe->getStreams()->audios()->first();
            if ($audioStream) {
                $metadata['audio_stream'] = [
                    'codec_name'    => $audioStream->get('codec_name'),
                    'sample_rate'   => $audioStream->get('sample_rate'),
                    'channels'      => $audioStream->get('channels'),
                    'bit_rate'      => $audioStream->get('bit_rate'),
                    'duration'      => $audioStream->get('duration'),
                    'tags'          => $audioStream->get('tags'),
                ];
            }

            // 如果你需要FFMpeg对象来处理视频（例如获取缩略图），可以这样：
            // $video = $this->ffmpeg->open($videoPath);
            // $dimensions = $video->getStreams()->videos()->first()->getDimensions();
            // $metadata['dimensions_from_ffmpeg_obj'] = ['width' => $dimensions->getWidth(), 'height' => $dimensions->getHeight()];

        } catch (FFMpegException $e) {
            // 处理 FFmpeg 或 FFProbe 相关的错误，比如文件不存在、损坏或权限问题
            error_log("Failed to extract video metadata for {$videoPath}: " . $e->getMessage());
            return ['error' => $e->getMessage()];
        } catch (\Exception $e) {
            // 捕获其他可能的异常
            error_log("An unexpected error occurred during metadata extraction for {$videoPath}: " . $e->getMessage());
            return ['error' => $e->getMessage()];
        }

        return $metadata;
    }
}

VideoMetadataExtractor

extractMetadataToArray

// 假设你在一个 Symfony Controller 中
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Annotation\Route;
use App\Service\VideoMetadataExtractor;

class VideoController extends AbstractController
{
    #[Route('/video/metadata/{filename}', name: 'app_video_metadata')]
    public function showMetadata(string $filename, VideoMetadataExtractor $extractor): Response
    {
        $videoPath = $this->getParameter('kernel.project_dir') . '/public/videos/' . $filename;

        if (!file_exists($videoPath)) {
            return new Response('Video not found', Response::HTTP_NOT_FOUND);
        }

        $metadata = $extractor->extractMetadataToArray($videoPath);

        return $this->json($metadata);
    }
}

ffprobe

FFMpeg

ffprobe

ffprobe

PHP-FFMpeg

ffprobe

ffprobe

ffprobe

Probe

getFormat()

getStreams()

getStreams()

StreamCollection

videos()

audios()

first()

VideoStream

AudioStream

get()

width

height

codec_name

ffprobe

ffprobe -v quiet -print_format json -show_format -show_streams your_video.mp4