How to Choose an Audio Description Service

Start with the intended use

Begin by defining how the described audio will be made and played. A service may narrate an existing video file, describe a live event, or return separate audio that you sync later. The setup affects your input device and output device: you may record from a camera, use a microphone for notes, and deliver through a website player, TV app, streaming platform or conference tool.

Check the constraints before choosing. Confirm how the final audio must be delivered, whether the service supplies a mixed video file or a description-only track, and how long the turnaround takes. If you work with sensitive recordings, ask where files are handled and whether the provider can meet your retention or confidentiality requirements.

Features that matter

A clear voice matters more than a long list of extras. Check whether the provider offers human narration, synthetic voices or a choice of both. Ask for a short sample with your own script so you can judge pacing, pronunciation and how well the description fits the gaps between dialogue.

Audio specifications affect whether the result sounds acceptable. Confirm the sample rate and file format used for delivery. A common working choice is 48 kHz for video-related audio, but the key point is to match the service output to your editor or platform rather than assume a higher number means better sound.

Ask how the provider handles background noise and leveling. In a controlled studio recording, the service should deliver consistent speech without excessive noise. In a live setting, you need to know whether descriptions are produced from a quiet room and whether your own program audio will bleed into the narrator's input level.

Check compatibility

Compatibility depends on how you will receive the service. For finished audio, confirm which file types the provider returns and whether your editing or publishing software can open them. For live description, check the browser or app requirements, the connection method and the supported way to send program audio to the narrator.

Camera and microphone tools matter if you supply your own reference material. Make sure the service can accept the video format from your camera and that any guide track you record does not replace the original program audio. If the provider supplies a remote recording setup, ask whether you need a separate microphone or audio interface.

Power and connectivity are usually less relevant for a service because the provider records or describes remotely. The exception is a live event where you send uninterrupted audio. In that case, confirm whether the connection requires a wired network, which audio path is used, and what backup plan exists if the stream drops.

Build a shortlist

Use a concrete checklist rather than comparing vague quality claims. Write down the duration, language, required delivery format, turnaround time and whether you need a mixed file, a separate audio track, subtitles or a script. Add any live-event requirements such as the number of sessions and the expected viewing time.

Evaluate each option against the same points:

• File format, sample rate and delivery method match your workflow.
• Human or synthetic narration is available in the required language.
• Turnaround fits your publication date.
• A sample uses your own script, not only a generic demo.
• The provider states how source files are stored or deleted.
• Live service supports your streaming or meeting platform.
• Changes, revisions and the final delivered material are clearly defined.

Start with a small job before committing to a large run. Request one short video with your actual footage, then listen back on the intended device. If the result sounds clear, imports without conversion and arrives on time, you have enough information to continue with that service.