Adobe Flash is required in order to preview RTMP video in browser.
Starting version 76, Chrome automatically blocks Flash and it need to be enabled manually.
How to enable Flash in Chrome:
Note: You'll need to re-enable Flash after restarting Chrome.
If you can't enable Flash, or don't see the Flash option, paste the following URL in a new Chrome tab:
Then, make sure that the "Block sites from running Flash (recommended)" is not checked:
More info about fixing Flash issues in Chrome:
You may need to install the Flash plugin from the Adobe website:
Enabling Flash in Opera is done in a similar way:
If you don't see the Flash option, click the Site settings option:
Next, change the Flash settings from the Ask (default) to Allow:
Close the settings page and reload the main Loola page.
You may need to install the Flash plugin: https://get.adobe.com/flashplayer/
(after installing the plugin - restart Firefox)
Click the plugin icon in the Firefox address bar and enable Flash.