1.优化ffmpeg命令，适配各种类型视频

@@ -52,10 +52,10 @@ class ImmerseController extends AdminController
                     : $value . 'Bytes';
                 return $size;
             });
-            $grid->column('poem_id');
-            $grid->column('temp_id');
-            $grid->column('thumbnail')->image();
-            $grid->column('bgm')->display(function ($url){
+//            $grid->column('poem_id');
+//            $grid->column('temp_id');
+            $grid->column('thumbnail',"封面图")->image();
+            $grid->column('bgm',"背景音")->display(function ($url){
                 if ($url == '') return "无";
                 if (Str::of($url)->contains('.mp3'))
                     return "<a target='_blank' href='". $url ."'>查看</a>";