diff --git a/render-chunks.sh b/render-chunks.sh
index d203f04..8f3f943 100755
--- a/render-chunks.sh
+++ b/render-chunks.sh
@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
-set -euo pipefail
+set -o errexit -o nounset -o pipefail
+
+IFS=$'\n'
 
 # License MIT
 # Authors 2024
@@ -23,82 +25,91 @@ which ffmpeg >/dev/null || (echo "Please install ffmpeg" ; exit 1)
 which fzf >/dev/null || (echo "Please install fzf" ; exit 1)
 which mpv >/dev/null || (echo "Please install mpv" ; exit 1)
 
-INTROS_PATH="$HOME/Dokumente/syncthing/intros"
-OUTROS_PATH="$HOME/Dokumente/syncthing/outros"
-CHUNKS_PATH="$HOME/Dokumente/syncthing/"
-OUTPUT_PATH="$HOME/Videos/WK25/rendered"
+INTROS_PATH="${HOME}/Dokumente/cloud.ctbk.de/FSCK/2025/VOC/Talk-Intros/"
+OUTROS_PATH="${HOME}/Dokumente/cloud.ctbk.de/FSCK/2025/VOC/Talk-Outro/"
+CHUNKS_PATH="${HOME}/Dokumente/syncthing/fsck2025/streamingrechner/Recordings/"
+OUTPUT_PATH="${HOME}/Dokumente/syncthing/cwtv/cwtv-synthing/rendered/"
+
 
-# temp dir
 WORKDIR=$(mktemp -d)
 function finish {
   rm -r "$WORKDIR"
 }
 trap finish EXIT
 
+
+# Function to convert image to video with audio
+convert_image_to_video() {
+    local IMAGE_FILE="${1}"
+    local VIDEO_FILE="${2}"
+    local DURATION="${3}"
+    local FADE_TYPE
+    local FADE_START
+    local FADE_DURATION
+
+    if [[ "$4" == 0 ]]
+    then
+        # Fade-out
+        FADE_TYPE="out"
+        FADE_DURATION="${5}"
+        FADE_START="$(echo "${DURATION} - ${FADE_DURATION} - 0.02" | bc | awk '{printf "%.5f\n", $0}')"
+        # Note: The 0.02 = 1/50 is a hack to ensure we don't miss the last (fully black) frame
+    else
+        # Fade-in
+        FADE_TYPE="in"
+        FADE_DURATION="${4}"
+        FADE_START="0"
+    fi
+
+    echo "Rendering fade:"
+    echo "Type:     ${FADE_TYPE}"
+    echo "Start:    ${FADE_START}"
+    echo "Duration: ${FADE_DURATION}"
+
+    ffmpeg \
+        -loop 1 \
+        -framerate 50 \
+        -i "${IMAGE_FILE}" \
+        -f lavfi -i anullsrc=r=48000:cl=stereo \
+        -vf "fade=type=${FADE_TYPE}:start_time=${FADE_START}:duration=${FADE_DURATION},format=pix_fmts=yuv420p,fps=50" \
+        -c:a aac -b:a 192k \
+        -c:v libx264 -threads 0 -pix_fmt yuv420p -crf 18 \
+        -profile:v high -level 4.1 -disposition default -color_range tv \
+        -t "${DURATION}" "${VIDEO_FILE}"
+}
+
+
+# STEP 1
 # Select the appropriate files
 SELECTED_INTRO="$(find  "$INTROS_PATH" -type f | sort --reverse --human-numeric-sort | fzf --delimiter / --with-nth -1 --prompt "Intro File:")"
 SELECTED_OUTRO="$(find  "$OUTROS_PATH" -type f | sort --reverse --human-numeric-sort | fzf --delimiter / --with-nth -1 --prompt "Outro File:")"
 SELECTED_CHUNKS="$(find "$CHUNKS_PATH" -type f | sort --reverse | fzf --delimiter / --with-nth -1 -m --prompt "Video Chunks (use tab to select multiple):" | sort )"
 readarray -t CHUNKS_ARRAY < <(echo "$SELECTED_CHUNKS")
 
-FOOBARWTF="$(basename "$SELECTED_INTRO")"
-DEFAULT_OUTPUT_NAME="${FOOBARWTF%.*}"
-read -p "Please enter a name for the outputfile (path and extension will be added automatically): " -i "$DEFAULT_OUTPUT_NAME" -e OUTPUT_NAME
+BASEPATH="$(basename "${SELECTED_INTRO}")"
+DEFAULT_OUTPUT_NAME="${BASEPATH%.*}"
 
-# Function to convert image to video with audio
-convert_image_to_video() {
-    local image_file="$1"
-    local output_video="$2"
-    local duration="$3"
-    local fade_in="$4"
-    local fade_out="$5"
+read -r -p "Please enter a name for the outputfile (path and extension will be added automatically): " -i "${DEFAULT_OUTPUT_NAME}" -e OUTPUT_NAME
 
-    if [[ $fade_in == 0 ]]
-    then
-        ffmpeg -loop 1 \
-            -framerate 50 \
-            -t "$duration" \
-            -i "$image_file" -f lavfi \
-            -i anullsrc=r=48000:cl=stereo \
-            -vf "fade=t=out:st=$(($duration - $fade_out)):d=$fade_out,format=pix_fmts=yuv420p,fps=50" \
-            -c:a aac -b:a 192k \
-            -c:v libx264 -threads 0 -pix_fmt yuv420p -crf 18 \
-            -profile:v high -level 4.1 -disposition default -color_range tv \
-            -metadata:s:a:0 language=native \
-            -t "$duration" "$output_video"
-    else
-        ffmpeg -loop 1 \
-            -framerate 50 \
-            -t "$duration" \
-            -i "$image_file" -f lavfi \
-            -i anullsrc=r=48000:cl=stereo \
-            -filter_complex "fade=t=in:st=0:d=$fade_in,format=pix_fmts=yuv420p,fps=50" \
-            -c:a aac -b:a 192k \
-            -c:v libx264 -threads 0 -pix_fmt yuv420p -crf 18 \
-            -profile:v high -level 4.1 -disposition default -color_range tv \
-            -metadata:s:a:0 language=native \
-            -t "$duration" "$output_video"
-    fi
-}
+CONFIG_FILE="${OUTPUT_PATH}/${OUTPUT_NAME}.config"
 
 
 # find the start-offset for the first chunk
-read -p "Do you want to play the first chunk ${CHUNKS_ARRAY[0]} to find the start-offset? (y/n) [n]: " PLAY_FIRST_CHUNK
+read -r -p "Do you want to play the first chunk ${CHUNKS_ARRAY[0]} to find the start-offset? (y/n) [n]: " PLAY_FIRST_CHUNK
 PLAY_FIRST_CHUNK="${PLAY_FIRST_CHUNK:-n}"
 
 [[ "$PLAY_FIRST_CHUNK" == "y" ]] && mpv "${CHUNKS_ARRAY[0]}" --osd-level=3 --osd-status-msg='${=time-pos}' --really-quiet
 
-read -p "Enter the start-offset in seconds for the first chunk ${CHUNKS_ARRAY[0]} [0]: " START_OFFSET
+read -r -p "Enter the start-offset in seconds for the first chunk ${CHUNKS_ARRAY[0]} [0]: " START_OFFSET
 START_OFFSET="${START_OFFSET:-0}"
 
-
 # find the end-offset for the last chunk
-read -p "Do you want to play the last chunk ${CHUNKS_ARRAY[-1]} to find the end-offset? (y/n) [n]: " PLAY_LAST_CHUNK
+read -r -p "Do you want to play the last chunk ${CHUNKS_ARRAY[-1]} to find the end-offset? (y/n) [n]: " PLAY_LAST_CHUNK
 PLAY_LAST_CHUNK="${PLAY_LAST_CHUNK:-n}"
 
 [[ "$PLAY_LAST_CHUNK" == "y" ]] && mpv "${CHUNKS_ARRAY[-1]}" --osd-level=3 --osd-status-msg='${=time-pos}' --really-quiet
 
-read -p "Enter the end-offset in seconds for the last chunk ${CHUNKS_ARRAY[0]} [1]: " END_OFFSET
+read -r -p "Enter the end-offset in seconds for the last chunk ${CHUNKS_ARRAY[0]} [1]: " END_OFFSET
 END_OFFSET="${END_OFFSET:-1}"
 
 # Check if intro is an image and convert if necessary
@@ -117,10 +128,9 @@ if [[ "$EXT_OUTRO" == "png" || "$EXT_OUTRO" == "jpg" || "$EXT_OUTRO" == "jpeg" ]
     SELECTED_OUTRO="$OUTRO_VIDEO"
 fi
 
-cat <<EOT
-
-
-
+# print and log choices
+echo ; echo ; echo
+cat <<EOT | tee "${CONFIG_FILE}"
 I will be rendering with the following configuration:
     + Selected Intro: ${SELECTED_INTRO}
     + Selected Outro: ${SELECTED_OUTRO}
@@ -133,17 +143,18 @@ I will be rendering with the following configuration:
 EOT
 for index in "${!CHUNKS_ARRAY[@]}"
 do
-    echo "            + $index: ${CHUNKS_ARRAY[index]}"
+    echo "            + $index: ${CHUNKS_ARRAY[index]}" | tee -a "${CONFIG_FILE}"
 done
-echo "Export: ${OUTPUT_PATH}/${OUTPUT_NAME}.mkv"
+echo "Export: ${OUTPUT_PATH}/${OUTPUT_NAME}.mkv" | tee -a "${CONFIG_FILE}"
+echo "Config: ${CONFIG_FILE}" | tee -a "${CONFIG_FILE}"
 echo ; echo ; echo
-read -p "Do you want to proceed with this configuration? (y/n) [y]" PROCEED
+read -r -p "Do you want to proceed with this configuration? (y/n) [y]" PROCEED
 PROCEED="${PROCEED:-y}"
 
 [[ "$PROCEED" == "y" ]] || (echo "aborting"; exit 1)
 echo "doing ffmpeg things here"
 
-# combine the videos...
+# combine the videos
 ARRAY_LENGTH="${#CHUNKS_ARRAY[@]}"
 if [[ ${ARRAY_LENGTH} -lt 2 ]]
 then
@@ -151,28 +162,9 @@ then
     exit 1
 fi
 
-# STEP 1
-# temp dir
-WORKDIR=$(mktemp -d)
-function finish {
-  rm -r "$WORKDIR"
-}
-trap finish EXIT
 
 # STEP 2
-# Dauer des Intros ermitteln
 echo "==== STEP 2 ===="
-DURATION_INTRO=$(ffprobe -i "$SELECTED_INTRO" -show_entries format=duration -v quiet -of csv="p=0")
-
-# Sicherstellen, dass die Dauer gültig ist
-if [[ -z "$DURATION_INTRO" || "$DURATION_INTRO" == "N/A" ]]; then
-    echo "Fehler: Die Dauer des Intros konnte nicht ermittelt werden."
-    exit 1
-fi
-
-# Offset berechnen und negative Werte verhindern
-OFFSET=$(echo "scale=2; $DURATION_INTRO - 0.5" | bc)
-if (( $(echo "$OFFSET < 0" | bc -l) )); then OFFSET=0; fi
 
 # Prüfen, ob CHUNKS_ARRAY existiert und nicht leer ist
 if [[ -z "${CHUNKS_ARRAY[0]}" ]]; then
@@ -180,44 +172,82 @@ if [[ -z "${CHUNKS_ARRAY[0]}" ]]; then
     exit 1
 fi
 
+# Dauer des Intros ermitteln
+INTRO_DURATION="$(ffprobe -i "$SELECTED_INTRO" -show_entries format=duration -v quiet -of csv="p=0")"
+
+# Sicherstellen, dass die Dauer gültig ist
+if [[ -z "$INTRO_DURATION" || "$INTRO_DURATION" == "N/A" ]]; then
+    echo "Fehler: Die Dauer des Intros konnte nicht ermittelt werden."
+    exit 1
+fi
+
+OUTRO_DURATION="$(ffprobe -i "$SELECTED_OUTRO" -show_entries format=duration -v quiet -of csv="p=0")"
+
+# Sicherstellen, dass die Dauer gültig ist
+if [[ -z "$OUTRO_DURATION" || "$OUTRO_DURATION" == "N/A" ]]; then
+    echo "Fehler: Die Dauer des Outros konnte nicht ermittelt werden."
+    exit 1
+fi
+
 CROSSFADE_DURATION="0.5"
 
+# Offset berechnen und negative Werte verhindern
+INTRO_OFFSET="$(echo "${INTRO_DURATION} - ${CROSSFADE_DURATION}" | bc | awk '{printf "%.5f\n", $0}')"
+if (( $(echo "${INTRO_OFFSET} < 0" | bc) )); then INTRO_OFFSET=0; fi
+
+OUTRO_OFFSET="$(echo "${END_OFFSET} - ${CROSSFADE_DURATION}" | bc | awk '{printf "%.5f\n", $0}')"
+if (( $(echo "${OUTRO_OFFSET} < 0" | bc) )); then OUTRO_OFFSET=0; fi
+
 # Intro mit Crossfade zum ersten Chunk
-ffmpeg -i "$SELECTED_INTRO" -ss "$START_OFFSET" -i "${CHUNKS_ARRAY[0]}" \
+echo "Rendering intro transition:"
+echo "Intro duration:     ${INTRO_DURATION}"
+echo "Intro offset:       ${INTRO_OFFSET}"
+echo "Crossfade duration: ${CROSSFADE_DURATION}"
+
+ffmpeg \
+-i "${SELECTED_INTRO}" \
+-ss "${START_OFFSET}" -accurate_seek -i "${CHUNKS_ARRAY[0]}" \
 -filter_complex \
-"[0:v:0]format=pix_fmts=yuv420p,fps=50[va]; \
- [1:v:0]format=pix_fmts=yuv420p,fps=50[vb]; \
- [va][vb]xfade=transition=fade:duration=${CROSSFADE_DURATION}:offset=${OFFSET}[v]; \
- [1:a:0]afade=t=in:st=0:d=${CROSSFADE_DURATION}[a]; \
- [0:a:0][a]concat=n=2:v=0:a=1[a0]" \
--map '[v]' -map '[a0]' \
+"[0:v:0]format=pix_fmts=yuv420p,fps=50[vintro]; \
+ [1:v:0]format=pix_fmts=yuv420p,fps=50[vchunk1]; \
+ [vintro][vchunk1]xfade=transition=fade:duration=${CROSSFADE_DURATION}:offset=${INTRO_OFFSET}[vout]; \
+ [0:a:0]atrim=start=0:end=${INTRO_OFFSET}[atrim]; \
+ [atrim]asetpts=PTS-STARTPTS[aintro]; \
+ [1:a:0]afade=type=in:start_time=0:duration=${CROSSFADE_DURATION}[achunk1]; \
+ [aintro][achunk1]concat=n=2:v=0:a=1[aout]" \
+-map '[vout]' -map '[aout]' \
 -c:a aac -b:a 192k \
--c:v libx264 -threads 4 -pix_fmt yuv420p -crf 18 -profile:v high -level 4.1 -disposition default \
--movflags +faststart \
+-c:v libx264 -threads 0 -pix_fmt yuv420p -crf 18 -profile:v high -level 4.1 -disposition default \
 -metadata:s:a:0 language=native \
 "${WORKDIR}/introcombined.mkv"
 
-# STEP 3
 # Outro mit Crossfade vom letzten Chunk
-echo "==== STEP 3 ===="
-FOO=$(echo "${END_OFFSET} - ${CROSSFADE_DURATION}" | bc)
-ffmpeg -i "$SELECTED_OUTRO" -t "$END_OFFSET" -i "${CHUNKS_ARRAY[$((${#CHUNKS_ARRAY[@]} - 1))]}" \
+echo "Rendering outro transition:"
+echo "Outro duration:     ${OUTRO_DURATION}"
+echo "Outro offset:       ${OUTRO_OFFSET}"
+echo "Crossfade duration: ${CROSSFADE_DURATION}"
+
+ffmpeg \
+-i "${SELECTED_OUTRO}" \
+-t "${END_OFFSET}" -accurate_seek -i "${CHUNKS_ARRAY[$((${#CHUNKS_ARRAY[@]} - 1))]}" \
 -filter_complex \
-"[1:v:0]format=pix_fmts=yuv420p,fps=50[v1]; \
- [0:v:0]format=pix_fmts=yuv420p,fps=50[v0]; \
- [v1][v0]xfade=transition=fade:duration=${CROSSFADE_DURATION}:offset=${FOO}[v]; \
- [1:a:0]afade=t=out:st=${FOO}:d=${CROSSFADE_DURATION}[a1]; \
- [0:a:0]afade=t=in:st=0:d=${CROSSFADE_DURATION}[a0]; \
- [a1][a0]acrossfade=d=1[a]" \
--map "[v]" -map "[a]" \
+"[0:v:0]format=pix_fmts=yuv420p,fps=50[voutro]; \
+ [1:v:0]format=pix_fmts=yuv420p,fps=50[vchunkn]; \
+ [vchunkn][voutro]xfade=transition=fade:duration=${CROSSFADE_DURATION}:offset=${OUTRO_OFFSET}[vout]; \
+ [1:a:0]afade=type=out:start_time=${OUTRO_OFFSET}:duration=${CROSSFADE_DURATION}[achunkn]; \
+ [0:a:0]atrim=start=${CROSSFADE_DURATION}:end=${OUTRO_DURATION}[atrim]; \
+ [atrim]asetpts=PTS-STARTPTS[aoutro]; \
+ [achunkn][aoutro]concat=n=2:v=0:a=1[aout]" \
+-map '[vout]' -map '[aout]' \
 -c:a aac -b:a 192k \
 -c:v libx264 -threads 0 -pix_fmt yuv420p -crf 18 -profile:v high -level 4.1 -disposition default \
 -metadata:s:a:0 language=native \
 "${WORKDIR}/outrocombined.mkv"
 
-# STEP 4
+
+# STEP 3
 # Encoded intro+outro und alle Chunks in between mit c:v copy und audio dynnorm + encode
-echo "==== STEP 4 ===="
+echo "==== STEP 3 ===="
 
 CHUNKLIST="${WORKDIR}/chunklist.txt"
 
@@ -226,7 +256,7 @@ echo "file '${WORKDIR}/introcombined.mkv'" > "$CHUNKLIST"
 FFMPEG_CONCAT_CHUNKS=""
 if [[ ${ARRAY_LENGTH} -gt 2 ]]
 then
-    for index in $(seq 1 $(( ${ARRAY_LENGTH} - 2 )) )
+    for index in $(seq 1 $(( ARRAY_LENGTH - 2 )) )
     do
         FFMPEG_CONCAT_CHUNKS="${FFMPEG_CONCAT_CHUNKS}|${CHUNKS_ARRAY[index]}"
         echo "file '${CHUNKS_ARRAY[index]}'" >> "$CHUNKLIST"
diff --git a/render.sh b/render.sh
deleted file mode 100644
index 334175e..0000000
--- a/render.sh
+++ /dev/null
@@ -1,29 +0,0 @@
-#!/bin/bash
-set -euxo pipefail
-
-INTRO="$1"
-RECORDING="$2"
-OUTRO="${3:-intros/outro_ccbysa.mkv}"
-
-START_SECONDS="$3"
-STOP_SECONDS="$4"
-
-DURATION_SECONDS=$(($STOP_SECONDS - $START_SECONDS))
-FADEOUT_SECONDS=$(($DURATION_SECONDS - 1))
-
-ffmpeg -i "$INTRO" \
-  -ss $START_SECONDS -t $DURATION_SECONDS -i "$RECORDING" \
-  -i "$OUTRO" -filter_complex \
-  "[1:v:0]fade=t=in:st=0:d=0.2[x];[x]fade=t=out:st=$FADEOUT_SECONDS:d=1.0[y];\
-  [1:a:0]afade=t=in:st=0:d=0.2[a];[a]afade=t=out:st=$FADEOUT_SECONDS:d=1.0[b];\
-  [b]dynaudnorm[bd];\
-  [0:v:0][0:a:0]\
-  [y][bd]\
-  [2:v:0][2:a:0]\
-  concat=n=3:v=1:a=1\
-  [v][a0]" \
-  -map '[v]' -map '[a0]' \
-  -c:a aac -b:a 192k \
-  -c:v libx264 -threads 0 -pix_fmt yuv420p -crf 18 -profile:v high -level 4.1 -disposition default \
-  -metadata:s:a:0 language=native \
-  "rendered_recordings/$(basename -s .mp4 ${INTRO})_$(basename -s .mkv ${RECORDING})_COMBINED.mkv"