Audio

Stream the device's audio output to your browser. This lets you hear in-app sounds, media playback, and the TalkBack screen reader during a session.

Audio is currently supported on Android devices only.

Enabling audio

On the App Page

Add the audio query parameter to your app or embed URL:

https://appetize.io/app/<buildId|publicKey>?device=pixel7&audio=true

With the JavaScript SDK

Set audio: true in your session config:

const client = await window.appetize.getClient("#appetize")

const session = await client.startSession({
    device: "pixel7",
    audio: true,
})

Capturing audio frames

When audio is enabled, the session emits an audio event as frames arrive. The event includes the frame buffer, its codec, and the frame duration. Use it to record or mux audio alongside the video event:

session.on("audio", ({ buffer, codec, duration }) => {
    // `buffer` contains the AAC audio frame
    // `codec` is "aac"
    // `duration` is the frame duration in seconds
})

Live sample

Hear audio output combined with the TalkBack screen reader:

Appetize TalkBack Experiencesamples.appetize.io