Playing protected content with Kaltura

Overview

Nearly every license provider, such as Irdeto, EZDRM, or Kaltura, requires a few special information being sent to the DRM license server, or responds with a proprietary format. Instead of integrating a few license providers into the core of our player, we decided to provide necessary configuration options via the player's source configuration.

Kaltura provides all required details in a success call to /kaltura/api_v3/service/asset/action/getPlaybackContext, which enables an easy and seamless integration:

Widevine

// `playbackContext` contains the full JSON response from 
// `/kaltura/api_v3/service/asset/action/getPlaybackContext`
const kalturaSourcePrWv = playbackContext.result.sources.find(src => src.type === 'Dash_widevine');

const source = {
  dash: kalturaSourcePrWv.url,
  drm: {
    widevine: {
      LA_URL: kalturaSourcePrWv.drm.find(drmObj => drmObj.scheme === 'WIDEVINE_CENC').licenseURL
    }
};

PlayReady

// `playbackContext` contains the full JSON response from 
// `/kaltura/api_v3/service/asset/action/getPlaybackContext`
const kalturaSourcePrWv = playbackContext.result.sources.find(src => src.type === 'Dash_widevine');

const source = {
  dash: kalturaSourcePrWv.url,
  drm: {
    playready: {
      LA_URL: kalturaSourcePrWv.drm.find(drmObj => drmObj.scheme === 'PLAYREADY_CENC').licenseURL
    }
  }
};

FairPlay

// `playbackContext` contains the full JSON response from 
// `/kaltura/api_v3/service/asset/action/getPlaybackContext`
const kalturaSourceFps = playbackContext.result.sources.find(src => src.format === 'applehttp');

const source = {
  hls: kalturaSourceFps.url,
  drm: {
    fairplay: {
      LA_URL: kalturaSourceFps.drm[0].licenseURL,
      serverCertificate: Uint8Array.from(window.atob(kalturaSourceFps.drm[0].certificate), (c) => c.charCodeAt(0)).buffer,
      prepareContentId: contentId => contentId,
      prepareMessage: data => data.messageBase64Encoded,
      prepareLicense: data => JSON.parse(data).ckc,
      useUint16InitData: true,
    }
  }
};

Complete example for Widevine, PlayReady and FairPlay

// `playbackContext` contains the full JSON response from 
// `/kaltura/api_v3/service/asset/action/getPlaybackContext`
const kalturaSourcePrWv = playbackContext.result.sources.find(src => src.type === 'Dash_widevine');
const kalturaSourceFps = playbackContext.result.sources.find(src => src.format === 'applehttp');

const source = {
  dash: kalturaSourcePrWv.url,
  hls: kalturaSourceFps.url,
  drm: {
    widevine: {
      LA_URL: kalturaSourcePrWv.drm.find(drmObj => drmObj.scheme === 'WIDEVINE_CENC').licenseURL,
    },
    playready: {
      LA_URL: kalturaSourcePrWv.drm.find(drmObj => drmObj.scheme === 'PLAYREADY_CENC').licenseURL,
    },
    fairplay: {
      LA_URL: kalturaSourceFps.drm[0].licenseURL,
      serverCertificate: Uint8Array.from(window.atob(kalturaSourceFps.drm[0].certificate), (c) => c.charCodeAt(0)).buffer,
      prepareContentId: contentId => contentId,
      prepareMessage: data => data.messageBase64Encoded,
      prepareLicense: data => JSON.parse(data).ckc,
      useUint16InitData: true,
    }
  }
};

Updated 3 months ago