Lors de la lecture d'une vidéo sous Firefox, il n'y a pas de mécanisme pour bloquer la mise en veille de l'écran. Pour ne pas être embêté durant un film, j'ai écrit une fonction inspirée de Note : astuce verrouillage Windows. Cette fonction me permet de lire une vidéo en boucle avec VLC.

Je ne voulais pas dépendre d'un fichier externe à la fonction donc j'ai décidé de tout inclure dans celle-ci.

Première version : avec la vidéo de la source mentionnée plus haut

# 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'
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AAAAAAAALWlsc3QAAAAlqXRvbwAAAB1kYXRhAAAAAQAAAABMYXZmNTUuMzMuMTAw
    EOF
  vlc --loop $FILE
} 

magick -size 1x1 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
AAB1MAAA6mAAADqYAAAXcJy6UTwAAAAGUExURQCAgP////lmmXQAAAABYktHRAH/Ai3eAAAAB3RJ
TUUH6gUdDBYzu8q/0wAAACV0RVh0ZGF0ZTpjcmVhdGUAMjAyNi0wNS0yOVQxMjoyMjo1MSswMDow
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    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
}