With the Engine’s Audio Description Module.

Audio Description (AD), also known as Descriptive Video Service, makes video content accessible for people with visual impairments. It provides narrated descriptions of on-screen action, inserted during natural pauses in dialogue.

AD is now a worldwide requirement, and some countries enforce laws for a minimum amount of AD content to be broadcast.

Audio Description is moving from a compliance requirement to a standard deliverable.

In markets including the UK, USA and Canada, broadcasters already have mandatory accessibility obligations. Across Europe, accessibility legislation continues to drive wider adoption, while global streaming platforms increasingly expect AD as part of their standard content delivery workflows.

As a result, organisations of every size, from freelance Audio Description producers to major broadcasters and localisation facilities, need efficient and scalable ways to create delivery ready AD files.

✓ We have the narration track
But...
❌ We don't have a control track
❌ The broadcaster requires a different format
❌ The streaming platform wants a pre-mixed deliverable
❌ The loudness doesn't comply
❌ The process is too manual We cannot scale

Engine's Audio Description module provides a cost-effective, flexible solution for all Audio Description workflows.

If a control track is missing, Engine can generate one from the AD commentary track, allowing the AD with Program Audio Mix to be created. Engine reads the control track, adjusts the main audio, and merges the AD commentary to create the AD with Program Audio Mix. Customisable fade parameters ensure programme audio is adjusted according to the control data.

Audio Description workflows can be fully automated at scale with Engine Enterprise or seamlessly integrated into smaller operations with Engine Desktop.

Our Audio Description module can automatically:
✓ Read commentary tracks
✓ Create missing control tracks
✓ Generate AD mixes
✓ Apply configurable fades
✓ Route channels automatically
✓ Handle WAV, MOV and MXF files
✓ Integrate loudness compliance, alongside any of our other modules Scale from Desktop to Enterprise automation


As Audio Description requirements grow, every organisation faces the same delivery challenges. Whether you're creating one programme or thousands of hours of content, delivery requirements remain complex.

Freelancers need efficient tools to create control tracks and delivery-ready assets efficiently. Broadcasters and localisation providers need scalable, automated workflows that maintain consistency and compliance.

Engine bridges that gap for every type of creator. One workflow across Engine Desktop, Enterprise, or Cloud means you can work the same way at any scale.

“Our Audio Description module is already being used and trusted by independent Audio Description creators, post-production facilities, localisation providers, broadcasters, and streaming platforms worldwide.” 

Use Case Table

AD Configuration Options

Try it for yourself!
A free trial of Engine or Engine Desktop is available, and the team are happy to help with any queries.

Engine's flexible workflow generator lets you select the source channels for the main mix, commentary, and control track from any channel in your source file(s).

Supports a wide range of media formats, including MOV, MXF, and WAV.

The generated control track can be routed to any output channel. Pair the Audio Description module with the Loudness module to ensure compliance with any delivery specification. Add Conditional Workflows for hands-off processing and fully automated, scalable Audio Description workflows.