Information and how to instructions about enabling sound for html feeds.
By default, modern browsers block videos with sound from playing automatically unless a user has interacted with the page. Since digital signage runs unattended, the browser must be configured to allow unmuted autoplay before enabling the "unmuted by default" option in your content configuration.
This guide covers Chromium-based browsers (Chrome, Edge, Chromium) and Safari.
The most reliable method is to launch the browser with the autoplay policy disabled. Add this flag to your launch command or shortcut:
--autoplay-policy=no-user-gesture-required
Typical kiosk launch examples
Windows:
chrome.exe --kiosk --autoplay-policy=no-user-gesture-required "https://your-signage-url.example.com"
Linux:
chromium-browser --kiosk --autoplay-policy=no-user-gesture-required "https://your-signage-url.example.com"
macOS:
open -a "Google Chrome" --args --kiosk --autoplay-policy=no-user-gesture-required "https://your-signage-url.example.com"
Notes:
- The flag must be present every time the browser starts. If your signage player launches the browser automatically (startup script, scheduled task, kiosk manager), add the flag there.
- All existing browser windows must be closed before launching with the flag, or it will be ignored.
- This flag applies to all sites loaded in that browser session.
If your devices are centrally managed (Group Policy, Intune, Chrome Enterprise, or a `policies.json` file on Linux), set:
- **AutoplayAllowed** = `true` — allows autoplay with sound on all sites, or
- **AutoplayAllowlist** — a list of specific URL patterns allowed to autoplay with sound, e.g. `https://your-signage-url.example.com`
This survives browser updates and doesn't depend on how the browser is launched.
Chrome
1. Open your signage content URL in the browser.
2. Click the padlock/tune icon in the address bar → **Site settings**.
3. Set **Sound** to **Allow**.
Microsoft Edge
In Microsoft Edge optionally go to `edge://settings/content/mediaAutoplay` and add your signage URL under **Allow**.
Caveat: Chrome's autoplay decisions are partly based on a per-site "media engagement" score, so site settings alone are less predictable than the launch flag or enterprise policy. Use this option only if you can't modify the launch command or apply policies.
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Safari has no launch flag; configuration is done per website in settings:
1. Open your signage content URL in Safari.
2. Go to **Safari → Settings → Websites → Auto-Play**.
3. With your signage site listed under "Currently Open Websites," set it to **Allow All Auto-Play**.
4. Optionally, set **When visiting other websites** to **Allow All Auto-Play** to apply it browser-wide.
Alternatively, right-click the address bar while the site is open → **Settings for This Website** → set **Auto-Play** to **Allow All Auto-Play**.
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1. Enable the unmuted option in your content configuration.
2. Restart the browser (with the launch flag, if using Option 1).
3. Load your signage content and confirm video plays **with audio** and **without any click or key press**.
4. Reboot the device and confirm the behavior persists — signage devices often restart on a schedule, and the setting must survive a reboot.
- Video plays but is silent: The browser blocked unmuted autoplay. Re-check that the launch flag is applied (visit `chrome://version` and look for it under "Command Line") or that the site is allowed in settings/policy.
- Video doesn't play at all: Some setups pause blocked media entirely. Same fix as above.
- Worked before, stopped after an update: Manual site settings can be reset by updates or profile cleanup. Prefer the launch flag or enterprise policy for long-term reliability.
- Also check the OS/device volume. A correctly configured browser still needs system audio unmuted and routed to the right output (HDMI vs. analog).
Support available between 9:00am and 5:00pm (CST-06:00), Monday through Friday
