diff --git a/merge.sh b/merge.sh
index 9cec0fc..bc939e5 100755
--- a/merge.sh
+++ b/merge.sh
@@ -2,7 +2,7 @@ processed_intro_path=$PWD/out/intro-processed.mp4
 processed_outro_path=$PWD/out/outro-processed.mp4
 
 echo łączenie video z dźwiękiem:
-ffmpeg -vaapi_device /dev/dri/renderD128 \
+ffmpeg -y -vaapi_device /dev/dri/renderD128 \
 	-i out/video.mp4 -i $input_mono \
 	-video_track_timescale $timescale \
 	-tune stillimage \
@@ -41,4 +41,4 @@ echo "file $processed_outro_path" >>out/demuxer-branding.txt
 
 cat out/demuxer-branding.txt
 
-ffmpeg -f concat -safe 0 -i out/demuxer-branding.txt -c:v copy -b:a 320k "$final_output"
+ffmpeg -y -f concat -safe 0 -i out/demuxer-branding.txt -c:v copy -b:a 320k "$final_output"
diff --git a/split.sh b/split.sh
index c2d8c9f..ae26675 100644
--- a/split.sh
+++ b/split.sh
@@ -1,9 +1,9 @@
 echo dzielimy mp3 na dwa osobne wav
-ffmpeg -i $input -map_channel 0.0.0 /tmp/left.wav -map_channel 0.0.1 /tmp/right.wav
+ffmpeg -y -i $input -map_channel 0.0.0 /tmp/left.wav -map_channel 0.0.1 /tmp/right.wav
 
 echo na dwóch wątkach generujemy surowe pliki
-ffmpeg -i /tmp/left.wav -ac 1 -filter:a aresample=$aresample -map 0:a -c:a pcm_u8 -f data - >/tmp/leftraw &
-ffmpeg -i /tmp/right.wav -ac 1 -filter:a aresample=$aresample -map 0:a -c:a pcm_u8 -f data - >/tmp/rightraw &
+ffmpeg -y -i /tmp/left.wav -ac 1 -filter:a aresample=$aresample -map 0:a -c:a pcm_u8 -f data - >/tmp/leftraw &
+ffmpeg -y -i /tmp/right.wav -ac 1 -filter:a aresample=$aresample -map 0:a -c:a pcm_u8 -f data - >/tmp/rightraw &
 
 # czekamy aż obydwa wątki się zakończą
 wait