公开(公告)号：US20180054649A1

公开(公告)日：2018-02-22

申请号：US15429306

申请日：2017-02-10

Applicant: BEIJING BAIDU NETCOM SCIENCE AND TECHNOLOGY CO., LTD.

Inventor： Yongxing Li ,  Huifeng Shen ,  Jun Ge ,  Jingbo Huang ,  Xu Li

IPC: H04N21/438 ,  H04N21/2387 ,  H04N21/472 ,  H04N21/44 ,  H04N21/234 ,  H04N21/434 ,  H04N21/433

CPC classification number: H04N21/4383 ,  H04N21/234 ,  H04N21/2387 ,  H04N21/4331 ,  H04N21/4345 ,  H04N21/44 ,  H04N21/47217

Abstract: Disclosed is a method and device for switching video streams. The method comprises: acquiring video streams of a video in response to receiving a playback request for the video sent by a terminal, the video streams comprising: a video stream with a first group of pictures (GOP) frame number and a video stream with a second GOP frame number; sending the video stream with the first GOP frame number to the terminal, searching for a third key frame in the video stream with the first GOP frame number, and extracting a decoding time stamp (DTS) of the third key frame; searching the video stream with the second GOP frame number for a frame having an identical DTS; determining whether the frame is a fourth key frame in response to finding the frame having the identical DTS; and sending the video stream with the second GOP frame number to the terminal.

公开(公告)号：US09961398B2

公开(公告)日：2018-05-01

申请号：US15429306

申请日：2017-02-10

Applicant: BEIJING BAIDU NETCOM SCIENCE AND TECHNOLOGY CO., LTD.

Inventor： Yongxing Li ,  Huifeng Shen ,  Jun Ge ,  Jingbo Huang ,  Xu Li

IPC: H04N21/438 ,  H04N21/2387 ,  H04N21/472 ,  H04N21/44 ,  H04N21/234 ,  H04N21/434 ,  H04N21/433

CPC classification number: H04N21/4383 ,  H04N21/234 ,  H04N21/2387 ,  H04N21/4331 ,  H04N21/4345 ,  H04N21/44 ,  H04N21/47217

Abstract: Disclosed is a method and device for switching video streams. The method comprises: acquiring video streams of a video in response to receiving a playback request for the video sent by a terminal, the video streams comprising: a video stream with a first group of pictures (GOP) frame number and a video stream with a second GOP frame number; sending the video stream with the first GOP frame number to the terminal, searching for a third key frame in the video stream with the first GOP frame number, and extracting a decoding time stamp (DTS) of the third key frame; searching the video stream with the second GOP frame number for a frame having an identical DTS; determining whether the frame is a fourth key frame in response to finding the frame having the identical DTS; and sending the video stream with the second GOP frame number to the terminal.