release: v2.4.9

src/core/apis/file.ts

@@ -147,7 +147,15 @@ export class NTQQFileApi {
         } catch (e) {
             logger.logError('获取视频信息失败，将使用默认值', e);
         }
-        const newFilePath = filePath + '.mp4';
+        
+        let fileExt = 'mp4'
+        try {
+            let tempExt = (await fileType.fileTypeFromFile(filePath))?.ext;
+            if (tempExt) fileExt = tempExt;
+        } catch (e) {
+            this.context.logger.logError('获取文件类型失败', e);
+        }
+        const newFilePath = filePath + '.'+fileExt;
         fs.copyFileSync(filePath, newFilePath);
         context.deleteAfterSentFiles.push(newFilePath);
         filePath = newFilePath;