视频保存

backend/go-service/app/meeting/service/meeting_recording_service.go

@@ -255,7 +255,9 @@ func (s *MeetingRecordingService) StopRecording(ctx context.Context, userID int6
 	}
 
 	// 上传到 MinIO
-	objectKey := fmt.Sprintf("recordings/%s/%d-%s.mp4", strings.ToLower(code), rec.ID, rec.RemoteID)
+	// 后缀 .webm 与 media-server 实际产物保持一致
+	// （VP8/Opus 不能装进 mp4，media-server 直接出 webm；后续如需 mp4 可异步转码）
+	objectKey := fmt.Sprintf("recordings/%s/%d-%s.webm", strings.ToLower(code), rec.ID, rec.RemoteID)
 	fileURL, sizeBytes, uploadErr := s.uploadRecording(ctx, outputPath, objectKey)
 	if uploadErr != nil {
 		logs.Error(ctx, funcName, "录制文件上传 MinIO 失败",