HLS Native Player¶
Example of stream convertion to HLS and playing it in browser supporting HLS natively¶
The player shows how to convert stream published on WCS server to HLS and play it in browser. HLS stream cut starts automatically when strea is requested by HLS URL, for example https://demo.flashphoner.com:8445/test/test.m3u8
on the screenshot below
The code of the example¶
The source code can be accessed on server by the following path:
/usr/local/FlashphonerWebCallServer/client2/examples/demo/streaming/hls-js-player
- hls-native.css - player page styles file
- hls-native.html - player page
- hls-native.js - player lauhcn script
The example can be tested using the fiollowing URL:
https://host:8888/client2/examples/demo/streaming/hls-js-player/hls-js-player.html
Where host is WCS server address
Analyzing the code¶
To analize the code get hls-native.js
file version with hash ecbadc3
which is available here and can be downloaded in build 2.0.212.
1. A server HLS URL detection¶
getHLSUrl()
code
function initPage() {
$("#header").text("HLS Native Player Minimal");
$("#urlServer").val(getHLSUrl());
...
}
2. div
element setup to pass to the player¶
A div element for stream playback is passed to player
function initPage() {
...
remoteVideo = document.getElementById('remoteVideo');
remoteVideo.style ="background-color: lightgrey;";
}
3. Stream name detection (the stream should be published to server)¶
encodeURIComponent()
code
function playBtnClick() {
if (validateForm()) {
var streamName = $('#playStream').val();
streamName = encodeURIComponent(streamName);
...
}
}
4. HLS stream URL forming¶
If authentication key and token are set, they will be included to stream URL
function playBtnClick() {
if (validateForm()) {
...
var videoSrc = $("#urlServer").val() + '/' + streamName + '/' + streamName + '.m3u8';
var key = $('#key').val();
var token = $("#token").val();
if (key.length > 0 && token.length > 0) {
videoSrc += "?" + key + "=" + token;
}
...
}
}
5. Player starting¶
If browser does not support HLS playback natively, player will not be launched and a warning will be displayed
function playBtnClick() {
if (validateForm()) {
...
if (remoteVideo.canPlayType('application/vnd.apple.mpegurl')) {
remoteVideo.src = videoSrc;
remoteVideo.addEventListener('loadedmetadata', function() {
console.log("Play native HLS");
remoteVideo.play();
onStarted();
});
}
else {
$("#notifyFlash").text("Your browser doesn't support native HLS playback");
}
}
}