How can i get m3u8 address without devtools-network?

I want create some program (chrome extension or python) which crawl m3u8 links.

My target site include no information of m3u8 link in page source. so, I cant get m3u8 link in HTML page.

I already know chrome devtools-network can view m3u8 links. but I want crawl, so i can't use that idea.

I saw this program. https://chrome.google.com/webstore/detail/video-m3u8-sniffer-find-h/akkncdpkjlfanomlnpmmolafofpnpjgn

It display m3u8 link. that's what i need!

Sadly, I can't find how to do that. please help me!

this code work for me.

const filter = {
    urls: [
    ]
};
chrome.webRequest.onBeforeRequest.addListener(
    async function (details) {
        if (details.url.indexOf(".m3u8") > 0) { //get only m3u8 request
            update_urlMap('last', details.url) //save to map variable
                        
        }
    }, filter);

upper code is 'background script' code. That code run for every time, get all m3u8 request.

Chrome extension can use message-passing to communicate with background script and popup.