• Connect to your batocera.linux box, via the network for example
• In the /userdata/ folder, create a directory called decorations (next to roms, bios, …)

• Inside the decorations folder, create a new directory, let's call it mybezels
• From the main batocera.linux menu go to GAMES SETTINGS → DECORATIONS
• Check that the mybezels decoration is available and select it

• Note 1 : default bezels are available at https://github.com/batocera-linux/batocera-bezel All default bezels have a 1920×1080 resolution and will be resized to your resolution, as long as your aspect ratio (width/height) is at least 16:10 (i.e. the screen is “wide”, like 16:9 compared to a 4:3 classic aspect ratio).
• Note 2 : if you create a “default” folder instead of a custom name, bezels will replace the existing “default” bezels (the 2 folders will be virtually merged, taking as preference the /userdata/ bezels)

In batocera.linux, you can create :

• bezels for specific games on specific systems (mario on SNES)
• bezels for specific games on all systems (mario on all systems)
• bezels for specific system (a bezel for SNES, one for GB …)
• a default bezel for all

You can have all four at the same time. In case your ROM/system selection matches more than one option, Batocera will apply the rules in the order listed above. If there is no suitable bezel, no bezel will be displayed.

A bezel is composed of 2 files. A .png file and a .info file. See explanations below.

Bezels for a specific game on a specific system must be placed in the games/<system>/ directory and have the same name as the ROM.

Example: mybezels/games/snes/mario.png and mybezels/games/snes/mario.info

With this example, your bezel will be used for the game ROM mario only on SNES. If you have a ROM named mario on GB or NES, it will not be displayed.

Bezels for specific games on all systems must be placed in the games/ directory and have the same name as the ROM.

Example: mybezels/games/mario1.png and mybezels/games/mario1.info

In that case, if you have two ROM files named mario1, one for SNES and one for GB, both will display your bezel.

Bezels for specific systems must be placed in the systems directory and have the same name as the system.

Example: mybezels/systems/snes.png and mybezels/systems/snes.info

The default bezel must be at top level and have the name default.png and default.info

Example: Create the file mybezels/default.png. A size of 1920×1080 is recommended. The bezel will be drawn over the emulator rendering. Thus, you must keep transparent parts on the image.

The .info file is a text file describing how the image must be displayed over the emulator.

• width: width of the image
• height: height of the image
• top: top/left/bottom/right define the marge in pixel let to render the emulator.
• left: top/left/bottom/right define the marge in pixel let to render the emulator.
• bottom: top/left/bottom/right define the marge in pixel let to render the emulator.
• right: top/left/bottom/right define the marge in pixel let to render the emulator.
• opacity: a value between 0.0 and 1.0 to define the transparency of the image
• messagex: horizontal position of game messages (when a state is saved for example)
• messagey: vertical position of game messages (when a state is saved for example)

{
 "width":1920,
 "height":1080,
 "top":2,
 "left":241,
 "bottom":1,
 "right":243,
 "opacity":0.7000000,
 "messagex":0.220000,
 "messagey":0.120000
}