Beijing Zitiao Network Technology Co., Ltd.

China Petroleum Chemical Corporation

Crsc Research & Design Institute Group Co., Ltd.

Bing Yan

Wei Li

Hui Wang

Bin Wang

Jie Zhang

Guoying Wang

Xue Wang

Aimin Liang

Shichao Wang

Chuanqing Li

Xiaocheng Li

Zhen Liu

Guozhu Yu

Wenjuan Sun

Huiling Liu

Xia Zhao

Xigui Wang

Xu Yuan

Zhiyu Li

Huan Ding

Feng Ye

Qinghua Zhang

Guoying Sun

Guang Chen

Bangfeng Cheng

Guanglun Yang

Shengwen Zhang

Xianliang Lv

Guiyan Zheng

Zhenghui Mu

Guixi Luan

Weipin Zhou

Embodiments of the present disclosure provide an adaptive playback method and device for video, the method includes: receiving a playback instruction for a target video; and playing the target video according to a first code rate in response to the playback instruction; where the first code rate is determined by the following steps: predicting by using a network speed prediction algorithm to obtain a first network speed; acquiring a code rate prediction model corresponding to the network speed prediction algorithm, where the code rate prediction model is used for representing, under a historical performance parameter before switching to the network speed prediction algorithm, a mapping relationship between a network speed predicted by the network speed prediction algorithm and a code rate; and determining the first code rate corresponding to the first network speed through the code rate prediction model.

Adaptive playback method and device for video

The present disclosure provides a video definition grade determining method and apparatus, a server, a storage medium and a system. The video definition grade determining method comprises: in response to receiving a target video playing request transmitted by a client, determining a target region where the client is located and a current network speed of the client; determining, according to a video bit rate determining logic of the target region, a maximum video bit rate corresponding to the current network speed, wherein the video bit rate determining logic of the target region is used for determining a maximum video bit rate suitable for playing a video when a network speed of the target region is a respective network speed; obtaining a definition-grade video set for a target video corresponding to the target region; and according to the determined maximum video bit rate and a video bit rate of a definition-grade video in the obtained definition-grade video set, determining, in the obtained definition-grade video set, a definition-grade video to be played corresponding to the target video playing request.

Video definition grade determining method and apparatus, server, storage medium and system

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Beijing, China

Bing Yan