player.js

if (this.drm) {
          if ($Player.isHbbTv() && -1 === navigator.userAgent.indexOf("SmartTV_2019_1"))
            for (var b = g.getProtectionController().getKeySystems(), a = 0; a < b.length; a++)
              if ("urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95" === b[a].schemeIdURI) {
                b[a].setPlayReadyMessageFormat("utf-8");
                break
              } b = "PLAYREADY" === $DEVICE.preferredDRM ? {
            "com.microsoft.playready": {
              serverURL: this.drm.url
            }
          } : {
            "com.widevine.alpha": {
              serverURL: this.drm.url
            }
          };
          "nagra" === this.drm.operator && b["com.microsoft.playready"] && (a = this.drm.url.split("?"), b["com.microsoft.playready"].serverURL = a[0], b["com.microsoft.playready"].httpRequestHeaders = {
            "nv-authorizations": a[1].split("=")[1]
          });
          g.setProtectionData(b)
        }