摘要 |
Enhanced features are provided by enhanced feature data stored with an enhanced media file in a conventional media container format. The enhanced feature data is not recognized by a conventional playback application, which produces the conventional playback experience of the media file for a user who lacks a suitably configured enhanced media file application. The enhanced feature data is recognized by a suitably configured enhanced media file application, which processes the enhanced feature data and responds to user inputs to support the enhanced user features and interaction in conjunction with playback of the enhanced media file. |