Create a thermal camera look
useful tips
// scenario
Transform video to look like thermal/infrared camera footage with a heat-map color palette.
// shell
$ ffmpeg -i input.mp4 -vf "eq=brightness=0.06:saturation=2,hue=h=180,lutrgb=r='if(gt(val,200),255,0)':g='clip(val*2,0,255)':b='if(lt(val,50),255,0)'" output.mp4