Choose Stream Source

http://kbs-dokdo.gscdn.com/dokdo_300/dokdo_300.stream/playlist.m3u8

Notice!Browsers block mixed content to ensure security, as it involves loading both secure (HTTPS) and insecure (HTTP) resources on the same page, which can lead to vulnerabilities.

To allow insecure content in your browser, follow these steps:

Open your browser settings (e.g., Chrome or Edge).
Navigate to Privacy and Security or similar options.
Find the Site Settings section. Click publiciptv.com (for Chrome input: chrome://settings/content/siteDetails?site=https%3A%2F%2Fpubliciptv.com%2F into the Address Bar)
Scroll to find the option labeled Insecure Content.
Add the specific website to the "Allow" list.
Another Resources:https://superuser.com/questions/487748/how-to-allow-chrome-browser-to-load-insecure-content