add ffmpeg

src-tauri/src/lib.rs

@@ -13,8 +13,10 @@ pub fn run() {
             commands::init_ytdlp,
             commands::update_ytdlp,
             commands::update_quickjs,
+            commands::update_ffmpeg,
             commands::get_ytdlp_version,
             commands::get_quickjs_version,
+            commands::get_ffmpeg_version,
             commands::fetch_metadata,
             commands::start_download,
             commands::get_settings,