espeak-ng -f positive.txt -w main.wav -s 100 -b 1
sox -n -r 44100 -c 2 soothing.wav synth 500 sine 440-332
sox soothing.wav soothing_fade.wav fade t 500
sox soothing_fade.wav soothing_phaser.wav phaser 0.6 0.66 3 0.5 2 -t
sox soothing_phaser.wav background.wav reverb 50 50 100 100
sox main.wav -r 44100 main_resampled.wav
sox background.wav -r 44100 background_resampled.wav
sox -m main_resampled.wav "|sox background_resampled.wav -p trim 0 $(soxi -D main_resampled.wav)" output.wav
ffmpeg -i output.wav output.mp3
convert -size 1280x720 xc:white -gravity center -stroke black -strokewidth 5 -draw "rectangle 50,50 1230,670" -gravity center -pointsize 50 -annotate 0 "Positive Affirmations" frame.png
ffmpeg -loop 1 -i frame.png -i output.wav -c:v libx264 -c:a aac -strict experimental -b:a 192k -shortest output.mp4