An Image Audio item is a still image that can play audio in the background. This is useful for ambient, environmental sound, or for sound material with images attached. An audio file attached to an Image Audio item will loop until the user scrolls away to advance to the next item.
This image is for display on mobile. The small image works best at 1080 x 1920. (mobile portrait)
This image will be for display on older computers with lower-resolution screens or tablets. The medium image works best at 768 x 1024. (tablet portrait)
This image will be for display on large and high-resolution screens. The large image works best at 1920 x 1080. (desktop landscape)
The width in pixels of each breakpoint of a Mural story window are:
Both audio formats have a preview window available. At least one format is required - these days all modern browsers play mp3 so ogg is not strictly necessary. The audio file will loop infinitely.
This is where you select the sound file you want that is in the MP3 format.
This is where you select the sound file you want that is in the Ogg format.