WebKitX version 4.x has several multimedia improvements:

• It has built-in H.264 / ACC Codec support
• It wraps HTTP Live Stream library HLS.js through method PlayHLS and HLSSettings object
• It has Widevine support for enabling encrypted content such as NETFLIX

Below are screenshots of relevant sample projects available in WebKitX version 4.x bundle: 

 

 

 

 

{
  "manifest": {
    "application/dash+xml": true,
    "video/vnd.mpeg.dash.mpd": true,
    "application/x-mpegurl": true,
    "application/vnd.apple.mpegurl": true,
    "application/x-offline-manifest": true,
    "mpd": true,
    "m3u8": true,
    "application/vnd.ms-sstr+xml": false,
    "ism": false
  },
  "media": {
    "video/mp4; codecs=\"avc1.42E01E\"": true,
    "video/mp4": true,
    "video/mp4; codecs=\"avc3.42E01E\"": true,
    "video/mp4; codecs=\"hev1.1.6.L93.90\"": false,
    "video/mp4; codecs=\"hvc1.1.6.L93.90\"": false,
    "video/mp4; codecs=\"hev1.2.4.L153.B0\"; eotf=\"smpte2084\"": false,
    "video/mp4; codecs=\"hvc1.2.4.L153.B0\"; eotf=\"smpte2084\"": false,
    "video/mp4; codecs=\"vp9\"": false,
    "video/mp4; codecs=\"vp09.00.10.08\"": true,
    "video/mp4; codecs=\"av01.0.01M.08\"": true,
    "audio/mp4; codecs=\"mp4a.40.2\"": true,
    "audio/mp4": true,
    "audio/mp4; codecs=\"ac-3\"": false,
    "audio/mp4; codecs=\"ec-3\"": false,
    "audio/mp4; codecs=\"opus\"": true,
    "audio/mp4; codecs=\"flac\"": true,
    "video/webm; codecs=\"vp8\"": true,
    "video/webm": true,
    "video/webm; codecs=\"vp9\"": true,
    "video/webm; codecs=\"vp09.00.10.08\"": true,
    "audio/webm; codecs=\"vorbis\"": true,
    "audio/webm": true,
    "audio/webm; codecs=\"opus\"": true,
    "video/mp2t; codecs=\"avc1.42E01E\"": true,
    "video/mp2t": true,
    "video/mp2t; codecs=\"avc3.42E01E\"": true,
    "video/mp2t; codecs=\"hvc1.1.6.L93.90\"": false,
    "video/mp2t; codecs=\"mp4a.40.2\"": true,
    "video/mp2t; codecs=\"ac-3\"": false,
    "video/mp2t; codecs=\"ec-3\"": false,
    "text/vtt": true,
    "application/mp4; codecs=\"wvtt\"": true,
    "application/mp4": true,
    "application/ttml+xml": true,
    "application/mp4; codecs=\"stpp\"": true
  },
  "drm": {
    "com.microsoft.playready": null,
    "com.apple.fps.3_0": null,
    "com.apple.fps.2_0": null,
    "com.apple.fps.1_0": null,
    "com.apple.fps": null,
    "com.adobe.primetime": null,
    "org.w3.clearkey": {
      "persistentState": false
    },
    "com.widevine.alpha": {
      "persistentState": false
    }
  },
  "offline": true
}