diff --git a/convert_only_audio_ddp5.1_768k.sh b/convert_only_audio_ddp5.1_768k.sh
new file mode 100755
index 0000000..d9f2ae1
--- /dev/null
+++ b/convert_only_audio_ddp5.1_768k.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+
+# Check if the input file is provided
+if [ -z "$1" ]; then
+    echo "Usage: $0 input.mkv"
+    exit 1
+fi
+
+INPUT_FILE="$1"
+OUTPUT_FILE="${INPUT_FILE%.*}_ddp.mkv"
+
+# Convert and retain all streams, adding a new DDP 5.1 audio track
+ffmpeg -i "$INPUT_FILE" -map 0:v -map 0:a -map 0:a -map 0:s? -map 0:t? -c:v copy -c:a:0 copy -c:a:1 eac3 -b:a:1 768k -c:s copy "$OUTPUT_FILE"
+
+# Check if ffmpeg was successful
+if [ $? -eq 0 ]; then
+    mv "$OUTPUT_FILE" "$INPUT_FILE"
+    echo "Conversion successful. Original file replaced."
+else
+    echo "Conversion failed. Original file unchanged."
+    exit 1
+fi
+
diff --git a/downmix_only_audio_dd2.0_320k.sh b/downmix_only_audio_dd2.0_320k.sh
new file mode 100755
index 0000000..5b33c6c
--- /dev/null
+++ b/downmix_only_audio_dd2.0_320k.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+
+# Check if the input file is provided
+if [ -z "$1" ]; then
+    echo "Usage: $0 input.mkv"
+    exit 1
+fi
+
+INPUT_FILE="$1"
+OUTPUT_FILE="${INPUT_FILE%.*}_dd2.0.mkv"
+
+# Convert and retain all streams, adding a new DD 2.0 audio track
+ffmpeg -i "$INPUT_FILE" -map 0:v -map 0:a -map 0:a -map 0:s? -c:v copy -c:a:0 copy -c:a:1 ac3 -b:a:1 320k -ac 2 -c:s copy "$OUTPUT_FILE"
+
+# Check if ffmpeg was successful
+if [ $? -eq 0 ]; then
+    mv "$OUTPUT_FILE" "$INPUT_FILE"
+    echo "Conversion successful. Original file replaced."
+else
+    echo "Conversion failed. Original file unchanged."
+    exit 1
+fi
+
diff --git a/fix_font_mime_single_file.sh b/fix_font_mime_single_file.sh
index cd942d0..4a86651 100755
--- a/fix_font_mime_single_file.sh
+++ b/fix_font_mime_single_file.sh
@@ -25,5 +25,11 @@ if [ $? -gt 1 ]; then
     echo "Error processing mime-type: font/ttf for $MKV_FILE"
 fi
 
+mkvpropedit "$MKV_FILE" --attachment-mime-type "application/x-font-ttf" --update-attachment "mime-type:application/x-truetype-font"
+if [ $? -gt 1 ]; then
+    echo "Error processing mime-type: application/x-truetype-font for $MKV_FILE"
+fi
+
+
 echo "Finished processing $MKV_FILE"