1、添加中英文版本

2、修复已知BUG
3、完善功能
4、添加minimax视频渠道

application/services/asset_duration_update.go

@@ -0,0 +1,66 @@
+package services
+
+import (
+	"fmt"
+
+	models "github.com/drama-generator/backend/domain/models"
+	"github.com/drama-generator/backend/infrastructure/storage"
+)
+
+// UpdateAssetDurationFromFile 从本地文件探测并更新视频Asset的时长
+func (s *AssetService) UpdateAssetDurationFromFile(assetID uint, localFilePath string) error {
+	var asset models.Asset
+	if err := s.db.Where("id = ?", assetID).First(&asset).Error; err != nil {
+		return fmt.Errorf("asset not found")
+	}
+
+	if asset.Type != models.AssetTypeVideo {
+		return fmt.Errorf("asset is not a video")
+	}
+
+	if s.ffmpeg == nil {
+		return fmt.Errorf("ffmpeg not available")
+	}
+
+	duration, err := s.ffmpeg.GetVideoDuration(localFilePath)
+	if err != nil {
+		return fmt.Errorf("failed to probe video duration: %w", err)
+	}
+
+	durationInt := int(duration + 0.5)
+	if err := s.db.Model(&asset).Update("duration", durationInt).Error; err != nil {
+		return fmt.Errorf("failed to update duration: %w", err)
+	}
+
+	s.log.Infow("Updated asset duration from file",
+		"asset_id", assetID,
+		"duration", durationInt,
+		"file", localFilePath)
+
+	return nil
+}
+
+// UpdateAssetDurationFromURL 下载视频并探测时长
+func (s *AssetService) UpdateAssetDurationFromURL(assetID uint, localStorage *storage.LocalStorage) error {
+	var asset models.Asset
+	if err := s.db.Where("id = ?", assetID).First(&asset).Error; err != nil {
+		return fmt.Errorf("asset not found")
+	}
+
+	if asset.Type != models.AssetTypeVideo {
+		return fmt.Errorf("asset is not a video")
+	}
+
+	if localStorage == nil {
+		return fmt.Errorf("local storage not available")
+	}
+
+	// 下载视频到本地
+	localPath, err := localStorage.DownloadFromURL(asset.URL, "videos")
+	if err != nil {
+		return fmt.Errorf("failed to download video: %w", err)
+	}
+
+	// 探测时长
+	return s.UpdateAssetDurationFromFile(assetID, localPath)
+}