Signaling of multiple decoding times in media files

An apparatus, comprising:

• a processor;
• and
• a memory unit coupled with the processor and further comprising:
• an encoder configured to:
• store first timing data into a track box of a media file, the first timing data describing decoding time of at least one sample of a coded multimedia content stored within an associated media data box of the media file;
• and
• store alternate decoding time data for the at least one sample of the coded multimedia content, the alternate decoding time data being expressed as a delta value that represents an adjustment for the decoding time of the at least one sample.

A method, comprising:

• parsing a media file comprising a media bitstream and first timing data describing decoding time of at least one sample of the media bitstream;
• determining whether to one of decode the media bitstream in its entirety and decode a subset of the media bitstream;
• upon a determination to decode the subset of the media bitstream, parsing an alternate decoding timing data for the at least one sample of the subset of the media bitstream;
• and
• decoding the subset of media bitstream according to the alternate decoding timing data.

An apparatus comprising:

• a processor;
• and
• a memory unit operatively connected to the processor and further comprising:
• a file parser to:
• parse a media file comprising a media bitstream and first timing data describing decoding time of at least one sample of the media bitstream;
• determine whether to one of decode the media bitstream in its entirety and decode a subset of the media bitstream;
• upon a determination to decode the subset of the media bitstream, parse an alternate decoding timing data for the at least one sample of the subset of the media bitstream;
• and
• a decoder to decode the subset of media bitstream according to the alternate decoding timing data.

A computer readable medium that stores a container file comprising:

• a plurality of tracks;
• first timing data contained in a track box, the first timing data describing decoding time of at least one sample of a coded multimedia content stored within an associated media data box;
• alternate timing data contained in the box for signaling the alternate timing data for the at least one sample of the coded multimedia content, the alternate decoding time data being expressed as a delta value that represents an adjustment for the decoding time of the at least one sample;
• and
• an identifier identifying a scalability layer for the at least one sample.

An apparatus, comprising:

• a processor;
• and
• a memory unit coupled with the processor and further comprising:
• computer code configured to store first timing data into a track box of a media file, the first timing data describing decoding time of at least one sample of a coded multimedia content stored within an associated media data box of the media file;
• and
• computer code configured to store alternate decoding time data for the at least one sample of the coded multimedia content, the alternate decoding time data being expressed as a delta value that represents an adjustment for the decoding time of the at least one sample;
• and
• computer code configured to store an identifier identifying a scalability layer for the at least one sample.

An apparatus comprising:

• a processor;
• and
• a memory unit operatively connected to the processor and further comprising:
• computer code to parse a media file comprising a media bitstream and first timing data describing decoding time of at least one sample of the media bitstream;
• computer code to determine whether to one of decode the media bitstream in its entirety and decode a subset of the media bitstream;
• upon a determination to decode the subset of the media bitstream, parse an alternate decoding timing data for the at least one sample of the subset of the media bitstream;
• and
• computer code configured to decode the subset of media bitstream according to the alternate decoding timing data and
• computer code configured to parse an identifier identifying a scalability layer for the at least one sample.