diff --git a/encode_all b/encode_all
index 3057825..8ec85ff 100755
--- a/encode_all
+++ b/encode_all
@@ -1,6 +1,7 @@
 #!/bin/bash
 # encode_all encodes the whole library into specified format
 #
+ulimit -n "$(ulimit -Hn)"
 . env_parallel.bash
 
 src_library="${HOME}/flac"
@@ -43,12 +44,12 @@ function encode() {
 
   [[ -d "$final_dir" ]] || mkdir -p "$final_dir"
   if [[ -n "${tags[DISK]}" ]]; then
-    err="$(opusenc --quiet \
+    err="$(opusenc --quiet --discard-comments --discard-pictures \
          --title "${tags[TITLE]}" --artist "${tags[ARTIST]}" \
          --album "${tags[ALBUM]}" --tracknumber "${tags[TRACKNUMBER]}" \
          --date "${tags[DATE]}" --comment "DISK=${tags[DISK]}" "$file" "$final_opus" 2>&1)"
   else
-    err="$(opusenc --quiet \
+    err="$(opusenc --quiet --discard-comments --discard-pictures \
          --title "${tags[TITLE]}" --artist "${tags[ARTIST]}" \
          --album "${tags[ALBUM]}" --tracknumber "${tags[TRACKNUMBER]}" \
          --date "${tags[DATE]}" "$file" "$final_opus" 2>&1)"