``` magick -size 1×1 canvas:teal out.png

vlc –loop out.png

# Keep screen active when reading videos from Firefox function keep-screen-active {

SUFFIX=.$FUNCNAME.png
find /tmp -maxdepth 1 -type f -iname \*$SUFFIX -delete
FILE=$(mktemp --suffix $SUFFIX)
# This is a 1x1 px teal image.
base64 --decode > $FILE <<-'EOF'

iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAIGNIUk0AAHomAACAhAAA+gAAAIDo AAB1MAAA6mAAADqYAAAXcJy6UTwAAAAGUExURQCAgPlmmXQAAAABYktHRAH/Ai3eAAAAB3RJ TUUH6gUdDBYzu8q/0wAAACV0RVh0ZGF0ZTpjcmVhdGUAMjAyNi0wNS0yOVQxMjoyMjo1MSswMDow MAb9F8AAAAAldEVYdGRhdGU6bW9kaWZ5ADIwMjYtMDUtMjlUMTI6MjI6NTErMDA6MDB3oK98AAAA KHRFWHRkYXRlOnRpbWVzdGFtcAAyMDI2LTA1LTI5VDEyOjIyOjUxKzAwOjAwILWOowAAAApJREFU

  CNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII=
  EOF
vlc --loop $FILE

}

# Keep screen active when reading videos from Firefox function keep-screen-active {

FILE=/tmp/$FUNCNAME.png
magick -size 1x1 canvas:teal $FILE
vlc --loop $FILE

} ```