diff --git a/scripts/recc_encode.sh b/scripts/recc_encode.sh
index 8c70e2a..3df5071 100755
--- a/scripts/recc_encode.sh
+++ b/scripts/recc_encode.sh
@@ -53,7 +53,13 @@ get_bitrate_audio() {
     for ((i = 0; i < NUM_AUDIO_STREAMS; i++)); do
         NUM_CHANNELS=$(ffprobe -v error -select_streams "a:$i" -show_entries stream=channels -of default=noprint_wrappers=1:nokey=1 "$INPUT")
         BITRATE=$((NUM_CHANNELS * 64))
-        BITRATE_CMD+="-b:a:$i ${BITRATE}k "
+        CODEC_NAME="$(ffprobe -v error -select_streams "a:$i" -show_entries stream=codec_name -of default=noprint_wrappers=1:nokey=1 "$INPUT")"
+        # don't encode opus streams
+        if [[ "$CODEC_NAME" == 'opus' ]]; then
+            BITRATE_CMD+="-c:a:$i copy "
+        else
+            BITRATE_CMD+="-filter:a:$i 'aformat=channel_layouts=7.1|5.1|stereo|mono' -c:a:$i libopus -b:a:$i ${BITRATE}k "
+        fi
     done
     echo "$BITRATE_CMD"
 }
@@ -94,14 +100,14 @@ encode() {
     echo -e '#!/usr/bin/env bash\n' > "$ENCODE_FILE"
     echo "export OUTPUT=\"$OUTPUT\"" >> "$ENCODE_FILE"
 
-    SVT_PARAMS="${GRAIN}sharpness=3:tune=3:enable-overlays=1:scd=1:fast-decode=1:enable-variance-boost=1:enable-qm=1:qm-min=0:qm-max=15"
+    SVT_PARAMS="${GRAIN}sharpness=3:psy-rd=1:tune=3:enable-overlays=1:scd=1:fast-decode=1:enable-variance-boost=1:enable-qm=1:qm-min=0:qm-max=15"
     echo "export SVT_PARAMS=\"$SVT_PARAMS\"" >> "$ENCODE_FILE"
 
     UNMAP=$(unmap_streams "$INPUT")
     echo "export UNMAP=\"$UNMAP\"" >> "$ENCODE_FILE"
 
-    AUDIO_FORMAT='-af aformat=channel_layouts=7.1|5.1|stereo|mono -c:a libopus'
-    echo "export AUDIO_FORMAT='$AUDIO_FORMAT'" >> "$ENCODE_FILE"
+    # AUDIO_FORMAT='-af aformat=channel_layouts=7.1|5.1|stereo|mono'
+    # echo "export AUDIO_FORMAT='$AUDIO_FORMAT'" >> "$ENCODE_FILE"
     
     AUDIO_BITRATE=$(get_bitrate_audio "$INPUT")
     echo "export AUDIO_BITRATE=\"$AUDIO_BITRATE\"" >> "$ENCODE_FILE"