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1. WO2022111712 - AUDIO AND VIDEO SYNCHRONIZATION METHOD AND DEVICE

Publication Number WO/2022/111712
Publication Date 02.06.2022
International Application No. PCT/CN2021/134168
International Filing Date 29.11.2021
IPC
H04N 5/04 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
04Synchronising
H04N 5/265 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
222Studio circuitry; Studio devices; Studio equipment
262Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects
265Mixing
H04N 21/236 2011.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand
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 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
CPC
H04J 3/06
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
3Time-division multiplex systems
02Details
06Synchronising arrangements
H04J 3/0667
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
3Time-division multiplex systems
02Details
06Synchronising arrangements
0635Clock or time synchronisation in a network
0638Clock or time synchronisation among nodes; Internode synchronisation
0658Clock or time synchronisation among packet nodes
0661using timestamps
0667Bidirectional timestamps, e.g. NTP or PTP for compensation of clock drift and for compensation of propagation delays
H04L 65/60
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
65Network arrangements or protocols for real-time communications
60Media handling, encoding, streaming or conversion
H04M 1/72409
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
MTELEPHONIC COMMUNICATION
1Substation equipment, e.g. for use by subscribers
72Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
724User interfaces specially adapted for cordless or mobile telephones
72403with means for local support of applications that increase the functionality
72409by interfacing with external accessories
H04M 1/7243
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
MTELEPHONIC COMMUNICATION
1Substation equipment, e.g. for use by subscribers
72Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
724User interfaces specially adapted for cordless or mobile telephones
72403with means for local support of applications that increase the functionality
7243with interactive means for internal management of messages
H04N 21/236
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
Applicants
  • 华为技术有限公司 HUAWEI TECHNOLOGIES CO., LTD. [CN]/[CN]
Inventors
  • 张志军 ZHANG, Zhijun
  • 张栋浩 ZHANG, Donghao
  • 王磊 WANG, Lei
  • 张硕 ZHANG, Shuo
  • 王皓 WANG, Hao
  • 方卫庆 FANG, Weiqing
  • 杨峻峰 YANG, Junfeng
  • 葛峰 GE, Feng
Agents
  • 北京中博世达专利商标代理有限公司 BEIJING ZBSD PATENT&TRADEMARK AGENT LTD.
Priority Data
202011377423.730.11.2020CN
Publication Language Chinese (zh)
Filing Language Chinese (ZH)
Designated States
Title
(EN) AUDIO AND VIDEO SYNCHRONIZATION METHOD AND DEVICE
(FR) PROCÉDÉ DE SYNCHRONISATION AUDIO ET VIDÉO ET DISPOSITIF
(ZH) 一种音频与视频同步的方法及设备
Abstract
(EN) Embodiments of the present application relate to the technical field of electronics, and provide an audio and video synchronization method and a device. A first electronic device can perform, on the basis of its own clock, synchronous and mixed recording on video data acquired by the first electronic device and audio data acquired by a second electronic device. The specific solution comprises: the first electronic device initiating an audio call to the second electronic device in response to a first user operation; acquiring video data in response to a second user operation; obtaining audio data transmitted by means of multiple audio data packets from the second electronic device, and delay data corresponding to each of the multiple audio data packets, wherein the delay data is used for indicating a delay between the moment at which each audio data packet is generated and the moment at which the first electronic device obtains each audio data packet; and synchronizing audio data and video data on the basis of the delay data in response to a third user operation. The embodiments of the present application are used in the process of video recording.
(FR) Selon des modes de réalisation, la présente demande relève du domaine technique de l’électronique et concerne un procédé de synchronisation audio et vidéo et un dispositif. Un premier dispositif électronique peut effectuer, sur la base de sa propre horloge, un enregistrement synchrone et mélangé sur des données vidéo acquises par le premier dispositif électronique et des données audio acquises par un second dispositif électronique. La solution spécifique comprend les étapes suivantes : le premier dispositif électronique lance un appel audio du second dispositif électronique en réponse à une première opération d'un utilisateur ; acquiert des données vidéo en réponse à une deuxième opération de l'utilisateur ; obtient des données audio transmises au moyen de multiples paquets de données audio en provenance du second dispositif électronique, et des données de retard correspondant à chacun des multiples paquets de données audio, les données de retard étant utilisées pour indiquer un retard entre l'instant auquel chaque paquet de données audio est généré et l'instant auquel le premier dispositif électronique obtient chaque paquet de données audio ; et synchronise les données audio et les données vidéo sur la base des données de retard en réponse à une troisième opération de l'utilisateur. Les modes de réalisation de la présente demande sont utilisés dans le processus d'enregistrement vidéo.
(ZH) 本申请实施例提供一种音频与视频同步的方法及设备,涉及电子技术领域,第一电子设备能够以自身时钟为基准,将第一电子设备采集的视频数据与第二电子设备采集的音频数据进行同步混合录制。具体方案为:第一电子设备响应于第一用户操作,向第二电子设备发起音频呼叫;响应于第二用户操作,采集视频数据;获取来自第二电子设备的通过多个音频数据包传输的音频数据;以及多个音频数据包中的每个音频数据包对应的时延数据;其中,时延数据用于表示每个音频数据包的产生时刻与第一电子设备获取到每个音频数据包的时刻之间的时延;响应于第三用户操作,基于时延数据将音频数据和视频数据同步。本申请实施例用于录制视频的过程。
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