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1. WO2020133465 - SYSTEMS AND METHODS FOR MULTI-VIDEO STREAM TRANSMISSION

Publication Number WO/2020/133465
Publication Date 02.07.2020
International Application No. PCT/CN2018/125763
International Filing Date 29.12.2018
IPC
H04N 19/159 2014.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
134characterised by the element, parameter or criterion affecting or controlling the adaptive coding
157Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
159Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
CPC
H04N 19/107
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
102characterised by the element, parameter or selection affected or controlled by the adaptive coding
103Selection of coding mode or of prediction mode
107between spatial and temporal predictive coding, e.g. picture refresh
H04N 19/164
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
134characterised by the element, parameter or criterion affecting or controlling the adaptive coding
164Feedback from the receiver or from the transmission channel
H04N 19/177
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
169characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
177the unit being a group of pictures [GOP]
H04N 21/23655
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
23Processing of content or additional data; Elementary server operations; Server middleware
236Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
2365Multiplexing of several video streams
23655Statistical multiplexing, e.g. by controlling the encoder to alter its bitrate to optimize the bandwidth utilization
H04N 21/26216
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
25Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
262Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
26208the scheduling operation being performed under constraints
26216involving the channel capacity, e.g. network bandwidth
Applicants
  • ZHEJIANG DAHUA TECHNOLOGY CO., LTD. [CN]/[CN]
Inventors
  • ZHAO, Can
Agents
  • METIS IP (CHENGDU) LLC
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SYSTEMS AND METHODS FOR MULTI-VIDEO STREAM TRANSMISSION
(FR) SYSTÈMES ET PROCÉDÉS DE TRANSMISSION DE FLUX VIDÉO MULTIPLES
Abstract
(EN)
The present disclosure relates to systems and methods for a multi-video stream transmission to a client terminal. The systems and methods may include obtaining a multi-video stream including a plurality of video streams, each video stream including multiple key frames characterized by a frame rate and a key frame interval. The systems and methods may include determining a delay time of an initial key frame for each video stream based on a plurality of frame rates and a plurality of key frame intervals of the plurality of video streams. The systems and methods may further include processing the plurality of video streams to determine a desired sending time of the initial key frame in the corresponding video streams based on the delay time of the initial key frame in each video stream. The systems and methods may further include transmitting the plurality of processed video streams to the client terminal.
(FR)
La présente invention concerne des systèmes et des procédés de transmission de flux vidéo multiples vers un terminal client. Les systèmes et les procédés peuvent comprendre l'obtention d'un flux vidéo multiple qui contient une pluralité de flux vidéo, chaque flux vidéo contenant de multiples trames clés caractérisées par une fréquence de trame et un intervalle de trame clé. Les systèmes et les procédés peuvent comprendre la détermination d'un temps de retard d'une trame clé initiale pour chaque flux vidéo sur la base d'une pluralité de fréquences de trame et d'une pluralité d'intervalles de trame clé de la pluralité de flux vidéo. Les systèmes et les procédés peuvent en outre comprendre le traitement de la pluralité de flux vidéo afin de déterminer un moment d'envoi souhaité de la trame clé initiale dans les flux vidéo correspondants sur la base du temps de retard de la trame clé initiale dans chaque flux vidéo. Les systèmes et les procédés peuvent en outre comprendre la transmission de la pluralité de flux vidéo traités au terminal client.
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