US 12,439,114 B2
Video switching method and related device
Zhenxing Zhang, Shenzhen (CN); Hua Long, Shenzhen (CN); Guang Qian, Shenzhen (CN); and Junhao Jin, Shenzhen (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Jul. 28, 2023, as Appl. No. 18/361,469.
Application 18/361,469 is a continuation of application No. PCT/CN2021/074521, filed on Jan. 29, 2021.
Prior Publication US 2023/0370668 A1, Nov. 16, 2023
Int. Cl. G06F 3/00 (2006.01); G06F 13/00 (2006.01); H04N 5/445 (2011.01); H04N 21/239 (2011.01); H04N 21/266 (2011.01); H04N 21/472 (2011.01)
CPC H04N 21/266 (2013.01) [H04N 21/2393 (2013.01); H04N 21/472 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
receiving, by a video transmit end, a video switching instruction when sending a first video frame, wherein the first video frame is a frame of video data of a first video stream that is being sent by the video transmit end, and wherein the video switching instruction carries video parameter indication information; and
when a first field blanking period after the first video frame arrives, switching, by the video transmit end, video data in response to receiving the video switching instruction, comprising:
switching, by the video transmit end, from the first video stream to dummy data in response to receiving the video switching instruction, and sending the dummy data to a video receive end;
modifying, by the video transmit end, a video source parameter based on the video parameter indication information while sending the dummy data;
switching, by the video transmit end, from the dummy data to a second video stream in a second field blanking period of the second video stream, wherein the second video stream is a new video stream obtained after the video transmit end modifies the video source parameter; and
sending, by the video transmit end, the second video stream to the video receive end in an active period after the second field blanking period.