Method and device for switching video streams

A device for switching video streams, comprising:

• at least one processor;
• and
• a memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform operations, the operations comprising:
• 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 numbers and a video stream with a second GOP frame number, a GOP frame number being a frame number counting from a first key frame to a frame before a second key frame in a video stream, the second key frame being a subsequent key frame next to the first key frame, and the first GOP frame number being less than the second GOP frame number;
• sending the video stream with the first GOP frame number to the terminal, search for a third key frame in the video stream with the first GOP frame number, and extract a decoding time stamp (DTS) of the third key frame;
• searching the video stream with the second GOP frame number for a frame having a DTS identical to the extracted 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 in response to determining the frame being the fourth key frame.

A non-transitory computer storage medium storing a computer program, which when executed by one or more processors, cause the one or more processors to perform operations, the operations comprising:

• 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, a GOP frame number being a number of frames counting from a first key frame to a frame before a second key frame in a video stream, the second key frame being a subsequent key frame next to the first key frame, and the first GOP frame number being less than the 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 a DTS identical to the extracted 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 in response to determining the frame being the fourth key frame.