Methods and devices for improving storage and transmission of uncompressed data while using a standard format
AssigneeCanon Kabushiki Kaisha
InventorsFranck DENOUAL, Frédéric MAZE, Naël OUEDRAOGO, Hervé RUELLAN
Life of this patent
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Abstract
A method for encapsulating media data into an ISO Base Media File Format (ISOBMFF) standard compliant file, the media data comprising a sequence of samples, including obtaining at least one sample of the sequence, generating ISOBMFF structure data indexing the at least one obtained sample, compressing the at least one obtained sample, and embedding the generated ISOBMFF structure data and the compressed at least one sample within the ISOBMFF compliant file.
Claims19
A method for encapsulating media data into an ISO Base Media File Format (ISOBMFF) standard compliant file, the media data comprising a sequence of samples, the method comprising:
- obtaining a sample of the sequence of a predetermined type, indicating that the sample is uncompressed;
- generating a sample description comprising the predetermined type;
- compressing the obtained sample;
- generating ISOBMFF structure data indexing the compressed sample;
- adding to the sample description an item of information indicating the compression of the obtained sample;
- and
- embedding the generated ISOBMFF structure data, the sample description, and the compressed sample within the ISOBMFF compliant file.
A method for encapsulating media data into an ISO Base Media File Format (ISOBMFF) standard compliant file, the media data comprising a sequence of samples, the method comprising:
- obtaining at least one sample of the sequence;
- generating ISOBMFF structure data indexing the at least one obtained sample;
- compressing the at least one obtained sample;
- and
- embedding the generated ISOBMFF structure data and the compressed at least one sample within the ISOBMFF compliant file.
A method for generating displayable media data from an ISO Base Media File Format (ISOBMFF) standard compliant file generated by obtaining at least one sample of the sequence, generating ISOBMFF structure data indexing the at least one obtained sample, compressing the at least one obtained sample and embedding the generated ISOBMFF structure data and the compressed at least one sample within the ISOBMFF compliant file, the method comprising:
- obtaining, from the ISOBMFF compliant file, at least one compressed sample;
- decompressing the at least one obtained sample;
- obtaining, from the ISOBMFF compliant file, ISOBMFF structure data indexing the decompressed at least one sample;
- generating displayable media data as a function of the obtained ISOBMFF structure data and of the decompressed at least one obtained sample.
Dependencies are inferred from the claim text.