Audiovisual translation for the blind is known as audio description and consists of the narration of visual elements that aren’t evident through dialogue or sound.
A specific script is required for audio description to describe the relevant visual elements, such as characters, settings, camera movements and other visual details that are important for the understanding of the plot.
Audio-describers have to be able to synthesise and communicate visual information concisely and clearly. It’s also important to consider pacing and synchronisation with the original material so that the audio description doesn’t interrupt the flow of the narration.