In EchoVideo, an audio description file provides spoken narration of visual elements in media, such as actions, on-screen text, scene changes, and other cues not conveyed through dialogue alone. These descriptions support blind or low-vision viewers by making visual content accessible through audio.

An audio description file is uploaded as a separate audio asset and linked to the media asset. When played alongside the video, it delivers additional context without modifying the original video or its primary audio track.

Note: Audio description files uploaded to EchoVideo must include the original audio from the media. Audio description files that contain only narration (without the original audio) are not supported and may result in an incomplete playback experience.

Upload an Audio Description Audio Track

1. Click a media tile in your Library to open the media details page.

   The Details tab is displayed by default.

2. Alternatively, click the video icon in the Class List and select Details from the menu that appears.
3. Select Accessibility.
4. Click Add Audio Description Audio Track +, as shown in the figure below.

5. In the FilePicker window, click Select Files to Upload and navigate to your content on a computer or by connecting to a cloud storage option.

   Tip: Only .MP3 files are accepted.

6. Once the file you want to upload is listed in the FileStack window, click Upload.

   The upload processes.

Once the file is uploaded, it is synced and applied to the media. This process should only take a few moments.

If a user edits the video, the audio description audio track may need to be recreated and reuploaded for the edited video to be processed.

Once the file is uploaded, it is synced and applied to the media. This process should only take a few moments.

If a user edits the video, the audio extended description file may need to be recreated and reuploaded for the edited video to be processed.