Patent ID: 8631145
Filing Date: 2014-01-14
Classification: G06F,H04N

Abstract:
1. A playback device capable of playing a media file according to a predetermined quality of playback, the playback device comprising: a decoder configured to receive a media file in which the decoder is capable of playing the media file, wherein the media file is in the MKV container format; wherein the decoder is configured to detect a first passive flag or data field implemented in a Codec_Name field in the header of the media file and a second passive flag or data field implemented within a track within the media file as a user_data_unregistered message, wherein the media file has a portion unencrypted the first passive flag or data field and the second passive flag or data field are located within the unencrypted portion, and the first passive flag or data field and the second passive flag or data field indicate that the media file was encoded using a high quality encoder to a predetermined quality; wherein the decoder is configured to detect the first passive flag or data field and the second passive flag or data field and to not playback the media file without prior interaction by a user.