see https://bugs.gentoo.org/966219
direct call of ffmpeg binaries instead of harvid wrapper
--- a/libs/ardour/video_tools_paths.cc
+++ b/libs/ardour/video_tools_paths.cc
@@ -175,7 +175,7 @@ ArdourVideoToolPaths::transcoder_exe (std::string &ffmpeg_exe, std::string &ffpr
 	_ffprobe_exe = X_("");
 
 	std::string ff_file_path;
-	if (find_file (Searchpath(Glib::getenv("PATH")), X_("ffmpeg_harvid"), ff_file_path)) {
+	if (find_file (Searchpath(Glib::getenv("PATH")), X_("ffmpeg"), ff_file_path)) {
 		_ffmpeg_exe = ff_file_path;
 	}
 #ifdef PLATFORM_WINDOWS
@@ -203,7 +203,7 @@ ArdourVideoToolPaths::transcoder_exe (std::string &ffmpeg_exe, std::string &ffpr
 	}
 #endif
 
-	if (find_file (Searchpath(Glib::getenv("PATH")), X_("ffprobe_harvid"), ff_file_path)) {
+	if (find_file (Searchpath(Glib::getenv("PATH")), X_("ffprobe"), ff_file_path)) {
 		_ffprobe_exe = ff_file_path;
 	}
 #ifdef PLATFORM_WINDOWS