Symfony 怎样将视频元数据转为数组

composer require php-ffmpeg/php-ffmpeg

<?php  namespace AppService;  use FFMpegFFMpeg; use FFMpegFFProbe; use FFMpegExceptionFFMpegException;  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 SymfonyBundleFrameworkBundleControllerAbstractController; use SymfonyComponentHttpFoundationResponse; use SymfonyComponentRoutingAnnotationRoute; use AppServiceVideoMetadataExtractor;  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);     } }

Probe

getFormat()

StreamCollection

videos()

audios()

first()

VideoStream

AudioStream

get()

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