A current browser
Chrome, Safari, Edge or Firefox, kept reasonably up to date. Live video relies on browser features that older versions either lack or implement badly.
Online access
No installer, no store, no account on someone else's platform. What you do need is a current browser, camera permission and a connection that can carry two-way video — and if one of those is missing, the fix is usually thirty seconds long.
Four things. Everything else is already handled by the browser.
Chrome, Safari, Edge or Firefox, kept reasonably up to date. Live video relies on browser features that older versions either lack or implement badly.
Granted through the browser, not through us. If you dismissed the prompt once, the browser remembers — you re-enable it from the padlock in the address bar.
Two-way live video is the heaviest thing here. Wi-Fi is noticeably steadier than a weak mobile signal, and a VPN adds latency on top.
Both work. The phone layout keeps the conversation full-screen; the desktop layout shows the same two panes rather than expanding into a lobby.
Troubleshooting
Each of these has a specific cause. None of them is fixed by refreshing and hoping.
One note on privacy
The camera prompt you accept is a browser setting for this site. You can withdraw it from the padlock in the address bar at any moment, and the site has no way to override that or to turn the camera back on afterwards. That is a property of how browsers work, not a promise we are making.
Yes. It runs entirely in a browser tab on both phones and computers, so there is nothing to install and nothing to update. The camera is reached through the browser, which is why you see the standard permission prompt.
Once it is running, here is what actually happens.
It is the tab you are reading this in.