Extended Multimedia File Structure and Multimedia File Producting Method and Multimedia File Executing Method
AssigneeElectronics and Telecommunications Research Institute
InventorsYong Ju Cho, Jae Gon Kim, Jin Woo Hong, Young Kwon Lim, Moon Sup Song, Hyoung Joong Kim
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Abstract
Provided are an extended multimedia file structure, a multimedia file producing method, and a multimedia file executing method. The extended multimedia file structure includes: a metadata section including a media initial object descriptor (IOD) field and at least one track pointer; and a media data section including at least one media block indicated by the track pointer, wherein the at least one track pointer indicates a detail media resource contained in an embedded multimedia file or an external multimedia file.
Claims28
An extended multimedia file structure from a multimedia file structure, comprising:
- a metadata section including a media object descriptor field and at least one track pointer;
- and
- a media data section including at least one media block indicated by the track pointer,
- wherein the at least one track pointer indicates a detail media resource contained in an embedded the multimedia file or external the multimedia file.
A multimedia file producing method, comprising the steps of:
- reading a sub multimedia file to be used as an embedded media resource;
- extracting and analyzing information of the sub multimedia file;
- producing metadata which contains a pointer which indicates a location of a detail media block contained in the sub multimedia file;
- and
- collecting the metadata, a necessary general media block, and the multimedia file to produce a main multimedia file.
A multimedia file producing method, comprising the steps of:
- selecting a reference multimedia file;
- collecting location information of an external site where the reference multimedia file is stored;
- accessing the external site to analyze the information of the reference multimedia file;
- producing metadata which contains at least one of a pointer for indicating a location of the reference multimedia file and a pointer for indicating a location of a detail media block contained in the reference multimedia file;
- and
- collecting the metadata, a necessary general media block, and the location information of the reference multimedia file to produce a main multimedia file.
A multimedia file executing method, comprising the steps of:
- analyzing metadata of a multimedia file which contains a sub multimedia file therein;
- and
- reading at least one media block at a location indicated by a media pointer which forms the metadata,
- wherein when the media pointer indicates a detail media block of the sub multimedia file, the step of reading the media block comprises the step of reading the indicated detail media block.
A multimedia file executing method, comprising the steps of:
- analyzing metadata of a multimedia file which refers to an external reference multimedia file;
- checking whether at least one media pointer which forms the metadata indicates a file of an external site;
- and
- consuming a media block at a location indicated by the media pointer,
- The step of checking, when it is estimated that the media pointer indicates the external reference multimedia file, comprises downloading the external reference multimedia file of the indicated location.
Dependencies are inferred from the claim text.