diff --git a/bin/convertofut b/bin/convertofut
index 876ec12..186c1fb 100755
--- a/bin/convertofut
+++ b/bin/convertofut
@@ -36,8 +36,11 @@ case "$format_out" in
 esac
 
 for file in **/*".${format_in}"; do
+    while [ "$(jobs -p | wc -l)" -ge 10 ]; do
+        sleep 1
+    done
     output_file="${output}/$(dirname "$file")/$(basename "${file}" ".${format_in}").${format_out}"
     mkdir -p "$(dirname "${output_file}")"
-    ffmpeg -i "$file" $options "${output_file}"
+    ffmpeg -i "$file" $options "${output_file}" &
 done