Const
This field, if present, shall indicate the branding information that may be displayed when playing back the given content.
This field shall indicate the URL of content to launch.
This field, if present, shall provide a string that may be used to describe the content being accessed at the given URL.
This field, if present, shall indicate the user’s preferred Text/AudioTracks and playbackPosition for the media, sent from the client to the server. If the server does not find an available track for the title being played exactly matching a Track requested here, in the list of available tracks, it may default to picking another track that closely matches the requested track. Alternately, it may go with user preferences set on the server side (it will use this option if these PlaybackPreferences are not specified). In the case of text tracks, that may mean that the subtitle text is not displayed at all. In the cases where the preferred Text/AudioTracks are not available, the server shall return the TextTrackNotAvailable and/or AudioTrackNotAvailable Status(es) in the LauncherResponse.
Input to the ContentLauncher launchUrl command