508: Mp4

This is often the most overlooked step. Audio description is a secondary audio track that narrates the relevant visual details of a video for users who are blind or have low vision.

They must be synchronized with the audio and include non-speech information, like [Music playing] or [Door slams] . Format: Common sidecar files for MP4s include .SRT or .VTT . 2. Audio Description (AD) 508 mp4

Convert that transcript into a time-coded file (like a .VTT ). This is often the most overlooked step

If a character walks into a room and looks surprised without speaking, the AD track would say, "John enters the kitchen and gasps at the mess." 3. Text Transcripts Format: Common sidecar files for MP4s include

When you hear the term it refers to making MP4 video files compliant with Section 508 of the Rehabilitation Act . In short, it’s about ensuring that your digital video content is accessible to everyone, including people with visual, auditory, or physical disabilities.