added UI items for a rolling edit tool

app/main.cpp

@@ -26,6 +26,11 @@
  * Use the navigation above to find documentation on classes or source files.
  */
 
+extern "C" {
+#include <libavformat/avformat.h>
+#include <libavfilter/avfilter.h>
+}
+
 #include <QApplication>
 #include <QSurfaceFormat>
 
@@ -51,6 +56,14 @@ int main(int argc, char *argv[]) {
   format.setProfile(QSurfaceFormat::CoreProfile);
   QSurfaceFormat::setDefaultFormat(format);
 
+  // Register FFmpeg codecs and filters (deprecated in 4.0+)
+#if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(58, 9, 100)
+  av_register_all();
+#endif
+#if LIBAVFILTER_VERSION_INT < AV_VERSION_INT(7, 14, 100)
+  avfilter_register_all();
+#endif
+
   // Start core
   olive::core.Start();