Apparatus and method for producing/regenerating contents including mpeg-2 transport streams using screen description

An apparatus for playing back content, the apparatus comprising:

• a file interpreter to load a media file from a storage device, to divide the loaded media file into a scene and a plurality of MPEG-2 TSs, and to interpret a structure of a moov and a structure of a mdat from the media file, the moov comprising media information comprising at least one of decoding information of Audio/Video (AV) media, random time access information, and synchronization information between different media, and structure information used to control the plurality of MPEG-2 TSs, and the mdat comprising actual contents rendered at a corresponding time based on the scene;
• an MPEG-2 TS interpreter to interpret the plurality of MPEG-2 TSs and to extract a Packetized Elementary Stream (PES) packet;
• a PES packet interpreter to extract AV media corresponding to a media type from the extracted PES packet;
• an AV decoder to decode the extracted AV media;
• and
• an AV output unit to output the decoded AV media.

A method of writing content, the method comprising:

• receiving an input of a plurality of MPEG-2 TSs;
• forming a scene using a scene descriptor, the scene being associated with the plurality of MPEG-2 TSs;
• and
• encoding the plurality of MPEG-2 TSs and the formed scene into a single media file, the single media file comprising a moov comprising structure information, and an mdat comprising actual contents rendered at a corresponding time based on the formed scene.

A method of playing back content, the method comprising:

• dividing a loaded media file into a scene and a plurality of MPEG-2 TSs;
• interpreting a structure of a moov and a structure of an mdat from the media file, the moov comprising media information comprising at least one of decoding information of AV media, random time access information, and synchronization information between different media, and structure information used to control the plurality of MPEG-2 TSs, and the mdat comprising actual contents rendered at a corresponding time based on the scene;
• interpreting the plurality of MPEG-2 TSs and extracting a PES packet;
• extracting AV media corresponding to a media type from the extracted PES packet;
• decoding the extracted AV media;
• and
• outputting the decoded AV media.