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    Methods and systems of improved video stream switching and random access
    391.
    发明授权
    Methods and systems of improved video stream switching and random access 有权

    公开(公告)号：US10148983B2

    公开(公告)日：2018-12-04

    申请号：US15266824

    申请日：2016-09-15

    Applicant: QUALCOMM Incorporated

    Inventor： Fnu Hendry ,  Ye-Kui Wang

    IPC: H04N19/503 ,  H04N19/114 ,  H04N19/196 ,  H04N21/2343 ,  H04N21/845 ,  H04N19/70 ,  H04N19/187 ,  H04N19/31

    Abstract: Systems, methods, and computer readable media are described for providing improved video coding, including improved video stream switching and random access. In some examples, systems, methods, and computer readable media include obtaining video data at an encoder and determining, from the video data, an intra random access point (IRAP) picture. A first set of one or more leading pictures associated with the IRAP picture are coded as random access decodable leading (RADL) pictures based on the first set of one or more leading pictures having a temporal identifier (TemporalId) that is less than or equal to a TemporalId threshold value. A second set of one or more leading pictures associated with the IRAP picture are coded as random access skipped leading (RASL) pictures based on the second set of one or more leading pictures having a TemporalId that is greater than the TemporalId threshold value. The video bitstream can then be generated to include the IRAP picture, the first set of one or more leading pictures, and the second set of one or more leading pictures.

    SIGNALING IMPORTANT VIDEO INFORMATION IN NETWORK VIDEO STREAMING USING MIME TYPE PARAMETERS
    394.
    发明申请
    SIGNALING IMPORTANT VIDEO INFORMATION IN NETWORK VIDEO STREAMING USING MIME TYPE PARAMETERS 审中-公开

    公开(公告)号：US20180278971A1

    公开(公告)日：2018-09-27

    申请号：US15935553

    申请日：2018-03-26

    Applicant: QUALCOMM Incorporated

    Inventor： Ye-Kui Wang ,  Thomas Stockhammer

    IPC: H04N21/235 ,  H04N21/258

    Abstract: An example device for retrieving media data includes one or more processors configured to retrieve a manifest file specifying data for at least one representation of a media presentation, wherein the manifest file includes data that specifies one or more codecs for the at least one representation, extract, from the manifest file, the data that specifies the one or more codecs, the data including a first element representing a sample entry type code of a track of the at least one representation, wherein the first element represents the sample entry type code using a restricted scheme, and a second element representing a restricted scheme type code for the restricted scheme of the track, and retrieve the media data of the at least one representation based on the first element and the second element.

    CODING MCTS-EIS SEI MESSAGES OF AN ACCESS UNIT
    396.
    发明申请
    CODING MCTS-EIS SEI MESSAGES OF AN ACCESS UNIT 审中-公开

    公开(公告)号：US20180255322A1

    公开(公告)日：2018-09-06

    申请号：US15909395

    申请日：2018-03-01

    Applicant: QUALCOMM Incorporated

    Inventor： Ye-Kui Wang

    IPC: H04N19/70 ,  H04N19/55 ,  H04N19/137

    Abstract: An example device for processing video data includes a memory configured to store video data; and one or more processors implemented in circuitry and configured to determine whether an access unit of the video data includes a temporal motion constrained tile sets (MCTS) supplemental enhancement information (SEI) message; and decode an MCTS extraction information set (MCTS-EIS) SEI message of the access unit only when the access unit includes the temporal MCTS SEI message.

    SIGNALING OF IMPORTANT VIDEO INFORMATION IN FILE FORMATS
    400.
    发明申请
    SIGNALING OF IMPORTANT VIDEO INFORMATION IN FILE FORMATS 审中-公开

    公开(公告)号：US20180199071A1

    公开(公告)日：2018-07-12

    申请号：US15866262

    申请日：2018-01-09

    Applicant: QUALCOMM Incorporated

    Inventor： Ye-Kui Wang ,  Thomas Stockhammer

    IPC: H04N19/70 ,  H04N19/184 ,  H04N19/44

    Abstract: A device for processing media content obtains data from a box within a file conforming to a file format for a video codec, the box comprising a syntax structure that includes the data, the file being associated with the media content and the media content being coded according to the video codec; and determines, based on the data obtained from the box, whether to accept or reject the media content associated with the file. A device for generating media content generates data in a box within a file conforming to a file format, the box comprising a syntax structure that includes the data, the file being associated with the media content, wherein the data is for use in determining whether a client is to accept or reject the media content associated with the file; and outputs the file.

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