fix ffmpeg-merge

mybashrc

@@ -728,15 +728,17 @@ _YOUTUBE_ENCODE() {
 }
 
 _MERGE_VIDEO() {
+    rm -f mylist
     if [ "$#" -eq 0 ]; then
-        videos=$(echo ./*)
+        for i in "$PWD"/*; do
+            echo "file '$i'" >>mylist.txt
+        done
     else
         videos="$*"
+        for video in $videos; do
+            echo "file '$video'" >>mylist.txt
+        done
     fi
-    for video in $videos; do
-        rm -f mylist
-        echo "file '$video'" >> mylist.txt
-    done
     ffmpeg -f concat -safe 0 -i mylist.txt -c copy "output-merged.mp4"
 }