diff --git a/funi.js b/funi.js
index 404589c..affa519 100644
--- a/funi.js
+++ b/funi.js
@@ -739,12 +739,12 @@ async function downloadStreams(){
 
     if(!argv.mp4 && usableMKVmerge){
         let ffext = !argv.mp4 ? 'mkv' : 'mp4';
-        let command = merger.buildCommandMkvMerge(audioAndVideo, purvideo, puraudio, stDlPath, `${path.join(cfg.dir.content, outName)}.${ffext}`);
+        let command = merger.buildCommandMkvMerge(argv.simul, audioAndVideo, purvideo, puraudio, stDlPath, `${path.join(cfg.dir.content, outName)}.${ffext}`);
         shlp.exec('mkvmerge', `"${mkvmergebinfile}"`, command);
     }
     else if(usableFFmpeg){
         let ffext = !argv.mp4 ? 'mkv' : 'mp4';
-        let command = merger.buildCommandFFmpeg(audioAndVideo, purvideo, puraudio, stDlPath, `${path.join(cfg.dir.content, outName)}.${ffext}`);
+        let command = merger.buildCommandFFmpeg(argv.simul, audioAndVideo, purvideo, puraudio, stDlPath, `${path.join(cfg.dir.content, outName)}.${ffext}`);
         shlp.exec('ffmpeg',`"${ffmpegbinfile}"`,command);
     }
     else{