Canon Kabushiki Kaisha

Institut Mines-telecom

Ateme

Expway

Jean Le Feuvre

Frédéric Maze

Franck Denoual

Cyril Concolato

Naël Ouedraogo

Hervé Le Floch

Jonathan Taquet

Hervé Ruellan

Cédric Thienot

Eric Toullec

Lucas Gregory

Eric Nassor

Romain Lahore-Carraté

David Lambert

Frederic Maze

Nael Ouedraogo

The invention relates to providing default constructors to be used by reference in extractors of an extractor tracks in order to reduce the size of the extractor track when a same constructor is used in different extractors.

Method, device, and computer program for encapsulating media data into a media file

There is provided a method of encapsulating an encoded bitstream representing one or more images, the encapsulated bitstream comprising a data part and a metadata part. The method comprises:

Image data encapsulation

At least one embodiment of a method for encapsulating media data as fragments, each fragment comprising metadata and media data, the metadata describing encapsulation of the media data. After having obtained second media data to be encapsulated within a second fragment and second metadata describing encapsulation of the second media data, it is determined whether some of the second metadata are identical to some of first metadata belonging to a first fragment and describing encapsulation of first media data within the first fragment. If it is the case and if the second fragment is not to be parsed independently, the second media data and a portion of the second metadata are encapsulated within the second fragment, the second fragment further comprising an indication to signal that the metadata part of the second fragment comprises only a portion of the metadata required to parse the media data of the second fragment.

Method and apparatus for optimizing media content data encapsualtion in low latency applications

A method of encapsulating media data into a media file, the method comprising: obtaining a time boundary in a time interval corresponding to the presentation duration of an original sample of the media data; duplicating the original sample into two consecutive duplicated samples separated by the time boundary, the two duplicated samples having a same data part corresponding to the data part of the original sample; generating a time adjustment indication indicating for each duplicated sample the relationship between the time interval corresponding to the presentation duration of the duplicated sample and the time interval corresponding to the presentation duration of the original sample; and encapsulating the media data comprising the duplicated samples and the time adjustment indication in the media file, the time adjustment indication being located in metadata describing the media data.

Method and apparatus for encapsulation of media data in a media file

A method of encapsulating a bitstream of encoded video data in a media file, the method comprising: obtaining the bitstream comprising a second plurality of operating points, video data in the bitstream being organized into NAL units; the bitstream being filtered from an original bitstream, the original bitstream comprising a first plurality of operating points, the first plurality of operating points comprising at least the second plurality of operating points; obtaining from the bitstream a first NAL unit describing the first plurality of operating points; obtaining form the bitstream a second NAL unit describing the second plurality of operating points; generating the media file comprising the bitstream and comprising at least one metadata structure describing the second plurality of operating points; wherein the at least one metadata structure is generated based on both the first and second NAL units.

Method and apparatus for encapsulating video data into a file

A method of encapsulating an encoded bitstream representing one or more images includes providing description of images and/or sub-image picture, providing composed picture description, and outputting the bitstream. The description of images and/or sub-image pictures identifying portions of the bitstream representing the images and/or sub-images of the one or more images is provided. The composed picture description of at least one composed picture formed by one or more images and/or sub-image pictures also is provided. The bitstream, together with the composed picture description, is output as an encapsulated data file.

Description of image composition with HEVC still image file format

A method for encapsulating a video bit-stream in a server, including obtaining at least one network abstraction layer unit (NAL unit) of a first picture, buffering the at least one obtained NAL unit, obtaining at least one NAL unit of a second picture, the second picture being a random access picture following the first picture, and encapsulating the at least one obtained NAL unit of the second picture and the at least one buffered NAL unit in an encapsulation structure making it possible to generate a video bit-stream without processing the encapsulated at least one buffered NAL unit when processing the encapsulated video bit-stream.

Method, device, and computer program for improving random picture access in video streaming

According to embodiments, the invention provides a method for encapsulating partitioned timed media data comprising timed samples, comprising in turn subsamples, the timed samples being grouped into groups, the method comprising: obtaining spatial tracks, each spatial track comprising at least one subsample of a first timed sample and one corresponding subsample of the other timed samples, the corresponding subsamples being located at the same spatial position in its own timed sample as the at least one subsample; creating a base track referencing at least some of the spatial tracks, the base track comprising reconstruction instructions, each of the reconstruction instructions being associated with a group of timed samples, enabling generating a portion of a bit-stream from subsamples of spatial tracks, that belong to a same group of timed samples; and independently encapsulating each of the tracks in a least one media file.

Method, device, and computer program for improving encapsulation of media content

The invention relates to encapsulating tiled timed media data in a server and providing a timed media data bit-stream from encapsulated tiled timed media in a client device. The tiled timed media data comprises timed samples and each timed sample comprises a plurality of spatial subsamples. After having selected at least one spatial subsample from amongst the plurality of spatial subsamples of one of the timed samples, one tile track comprising the selected spatial subsample and one corresponding spatial subsample of each of the other timed samples is created for each selected spatial subsample. One composite track comprising at least one extractor identifying at least one of the created tile tracks is created. Each created track is independently encapsulated in at least one media segment file.

Method, device, and computer program for encapsulating partitioned timed media data

There is provided a method of encapsulating an encoded bitstream representing one or more images, the encapsulated bitstream comprising a data part and a metadata part. The method comprises: Said image item information comprises one or more properties including at least part of the image description information dedicated to the considered sub-image or single image or set of single images, said image description information being defined in one or more boxes.

Methods of encapsulating a bitstream include generating reference information to enable image items identifying image portions of a bit stream to be referenced to corresponding description information. The resulting encapsulated file may also include information identifying a timed portion of the data stream corresponding to a video sequence. Description information may include spatial parameters, such as position and width and height of sub-parts of an overall image, and/or display parameters such as colour display, pixel aspect ratio, and clean aperture parameters.

Image data encapsulation with referenced description information

The invention relates to a method of generating a media file, the method comprising: generating a first data structure assigning a subset of samples or subsamples of a track to one or more sample groups; generating a second data structure comprising data for describing each of the one or more sample groups, the first data structure comprising a first grouping type and the second data structure comprising a second grouping type, wherein the second data structure comprises data for indicating whether the data for describing each of the one or more sample groups is invariant along time or not; and generating a media file including the samples, and the first and second data structures

Disclosed is a method for managing multimedia content, involving: obtaining a first set of content description metadata describing a first multimedia content broadcast in dynamic mode; and upon reading, in the first set of metadata, data redirecting to a section of a second set of content description metadata, reading, in the section of the second set of metadata, data relating to a time synchronization for accessing a second multimedia content broadcast in dynamic mode.

Method for managing the broadcasting of multimedia content, and device for carrying out said method

There are provided a device and a method for generating timed media data, the timed media data comprising samples, the method comprising:

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Cachan, France

Jean Le Feuvre