如何在PHP中将m3u8转换为base64编码？

Question

I have clapper player andI i add url m3u8 and I need to encoding the url

this is the code:

   <script>
   var player = new Clappr.Player({source: 'http://vstream2.hadara.ps:8081/AlfajertvHD2_web/web1/playlist.m3u8',

parentId: '#player', mimeType: 'application/x-mpegURL',plugins: [DashShakaPlayback,LevelSelector,ChromecastPlugin],levelSelectorConfig: {
title: 'Quality',
labels: {
    2: 'High', // 500kbps
    1: 'Med', // 240kbps
    0: 'Low', // 120kbps
},
labelCallback: function(playbackLevel, customLabel) {
    return customLabel + playbackLevel.level.height+'p'; // High 720p
}