a browser that supports hls means what
HLS. HLS or HTTP Live Streaming is a protocol invented by Apple Inc and supported on iOS, Safari and latest versions of Android browser / Chrome. HLS is also adaptive. HLS can also be decoded using JavaScript, which means we can support latest versions of Firefox, Chrome and Internet Explorer 10+. See this HTTP Live Streaming JavaScript player. At the start of the streaming session an extended M3U (m3u8) playlist is downloaded.