uioverrides uioverrides /home/deck/.steam/root/config/uioverrides/movies/ ffmpeg -loop 1 -t 5 -i startup.jpg startup.webm -i startup.jpg startup.webm - Using a movie from the Steam Points Shop. - Using the Animation Changer plugin for Decks Loader. - Use an own movie. - Open the Steam menu by pressing the Steam button or the B button. - Select the Power option. - Select Switch to Desktop. - Open the file explorer. I'm assuming it's Dolphin. - Select Home in the top left corner to go to your home folder. - Open the hamburger menu in the top right and make sure the Show Hidden Files option is checked. - Open the .steam folder. Next, open the root folder and then the config folder. - If you see an uioverrides folder, open it. Otherwise, create it first. - Inside the uioverrides folder should be a movies folder. If it's missing, create and then open it. You should now be in /home/deck/.steam/root/config/uioverrides/movies/. - Place the movie in this folder. It should be in the webm file format and be less than 30 second long. - Open the hamburger menu in the top right, uncheck Show Hidden Files, and close the file explorer. - Double-click on Return to Gaming Mode or restart the Steam Deck. - Open the Steam menu. - Select Settings. - Select Customization. - Select your movie. - You can skip the startup movie by pressing any button on the front or top of the Steam Deck. - You can create a movie out of a single image using ffmpeg -loop 1 -t 5 -i startup.jpg startup.webm. Here, -loop 1 means the same image will be used for every frame, -t 5 means the movie will be 5 seconds long, -i startup.jpg is the input image, and startup.webm is the output movie.