+class FFMPEGScanProgress;
+
+class FFOptions_OptName;
+class FFOptions_OptValue;
+class FFOptions_Opt;
+class FFOptions;
+class FFOptions_OptPanel;
+class FFOptionsUnits;
+class FFOptionsText;
+class FFOptionsApply;
+class FFOptionsWindow;
+class FFOptionsDialog;
+class FFOptionsKindItem;
+class FFOptionsKind;
+
+#define FF_KIND_CODEC 0
+#define FF_KIND_FFMPEG 1