# ffmpeg -i ig-reels-next.mp4 -vf chromakey=black overlay.webm
# ffmpeg -i ig-reels-next.mp4 -c:v libvpx -vf "colorkey=0x0bb563:0.01:0.1,format=yuva420p,scale=iw:ih" -auto-alt-ref 0 -y overlay.webm


# ffmpeg -i ig-reels-next.mp4 -c:v prores_ks ig-reels-next.mov


ffmpeg -i ig-reels-next.webm -vf "chromakey=black:0.1:0.1"  -c:v libvpx-vp9 -crf 30 -b:v 0 -b:a 128k -c:a libopus -y overlay.webm && del ig-reels-next.webm

# ffmpeg -loop 1 -i green.jpg -c:v libx264 -t 15 -pix_fmt yuv420p -vf scale=1080:1920 green.mp4