diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..e608139
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,2 @@
+ffmpeg-python
+music21
\ No newline at end of file
diff --git a/src/images_to_video.md b/src/images_to_video.md
new file mode 100644
index 0000000..6143741
--- /dev/null
+++ b/src/images_to_video.md
@@ -0,0 +1,22 @@
+Write a timestamp file like this
+
+```concat.txt
+ffconcat version 1.0
+file 0.png
+duration 97
+file 97.png
+duration 81
+file 178.png
+duration 64
+file 242.png
+duration 54
+file 296.png
+duration 67
+file 363.png
+```
+
+where duration is in seconds
+
+```bash
+ffmpeg -f concat -i concat.txt -vf "fps=25,format=yuv420p" -vsync vfr output.webm
+```
\ No newline at end of file
diff --git a/src/images_to_video.sh b/src/images_to_video.sh
new file mode 100644
index 0000000..c0f4568
--- /dev/null
+++ b/src/images_to_video.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+
+IN=$1
+[[ $IN ]]|| IN="concat.txt"
+FILES=$(cat $IN | grep file | awk '{print $2}')
+
+echo $FILES
+
+# Get the larger width and height of all the images
+WIDTH=$(identify -format "%w\n" $FILES | sort -nr | head -1)
+HEIGHT=$(identify -format "%h\n" $FILES | sort -nr | head -1)
+
+echo $WIDTH x $HEIGHT
+
+# Center all the images and pad them to the larger width and height
+# Set the border color to the dominant color of the image
+for f in $FILES; do
+    convert $f -gravity center -background none -extent ${WIDTH}x${HEIGHT} -bordercolor $(convert $f -format "%[pixel:p{0,0}]" info:) -border 0x0 $f
+done
\ No newline at end of file
diff --git a/src/mscz_to_mp3.py b/src/mscz_to_mp3.py
index d4ab5c4..df6ef7f 100644
--- a/src/mscz_to_mp3.py
+++ b/src/mscz_to_mp3.py
@@ -5,7 +5,7 @@ import os
 
 
 MSCORE="mscore"
-REMOVE_MID_FILES=False
+REMOVE_MID_FILES=True
 
 
 def get_elements(stream, classe):
@@ -79,19 +79,26 @@ def __main__():
     OUT=sys.argv[2]
     os.makedirs(OUT, exist_ok=True)
 
-    # Create midi file
-    subprocess.call([MSCORE, SCORE, "-o", f"{OUT}/{basename(SCORE)}.mid"])
+    if SCORE.split(".")[-1] == "mscz":
+        # Create midi file
+        MIDI_SCORE=f"{OUT}/{basename(SCORE)}.mid"
+        subprocess.call([MSCORE, SCORE, "-o", MIDI_SCORE])
+    elif SCORE.split(".")[-1] in ["mid", "midi"]:
+        MIDI_SCORE=SCORE
+    else:
+        print(f"Unknown file extension {SCORE.split('.')[-1]}")
+        exit(1)
 
-    midi_files = separate_instruments(f"{OUT}/{basename(SCORE)}.mid", OUT)
+    midi_files = separate_instruments(MIDI_SCORE, OUT)
 
     for file in midi_files:
         change_instrument(file, file)
 
     print("=== Creating audios ===")
-    #create_audios(midi_files, OUT)
+    create_audios(midi_files, OUT)
 
     if REMOVE_MID_FILES:
-        os.remove(f"{OUT}/{basename(SCORE)}.mid")
+        os.remove(MIDI_SCORE)
         for file in midi_files:
             os.remove(file)
 
diff --git a/src/set_audio.sh b/src/set_audio.sh
index 9e16898..2e384c6 100755
--- a/src/set_audio.sh
+++ b/src/set_audio.sh
@@ -1,24 +1,18 @@
 #!/bin/bash
 
-IN=recordings/le_roi.mkv
+usage () {
+    echo "Usage: $0 <file.webm|mp4|...>"
+    exit 1
+}
+
+IN=$1
+[[ $IN ]] || usage $0
+
 AUDIOS=out
 OUT=videos
-#TEMPO=90
-#ADDED_TEMPS=3
-#TEMP_DIR=$(mktemp -d)
-
-#OFFSET=$(bc <<< "scale=20; 60.0/$TEMPO * $ADDED_TEMPS")
-
-mkdir -p "$VIDEOS"
+mkdir -p "$OUT"
 
 add_audio () {
-    #temp_file=$TEMP_DIR/$(basename $2)
-    #echo temp: $temp_file
-    #ffmpeg -i $2 \
-    #    -ss $OFFSET \
-    #    -acodec copy \
-    #    $temp_file
-
     ffmpeg -y \
         -i $1 \
         -i $2 \
@@ -26,8 +20,6 @@ add_audio () {
         -map 0:v:0 \
         -map 1:a:0 \
         $3
-
-    #rm $temp_file
 }
 
 add_audio "$IN" "$AUDIOS/instrument_1.mp3" "$OUT/soprane.mkv"