Video transmission method, apparatus, and system

A terminal comprising:

• a transmitter configured to send, to a server through a first link based on a first period, first field of view information;
• and
• a receiver coupled to the transmitter and configured to receive, from the server through a second link based on a second period, data of a first frame of a first image that corresponds to the first field of view information,
• wherein the second period is based on a frame rate of a video, and
• wherein the first frame of the first image belongs to the video.

A communication system comprising:

• a server configured to:
• determine, based on a second period, that first field of view information is latest field of view information;
• obtain data of a first frame of image corresponding to the first field of view information, wherein the second period is based on a frame rate of a video, and wherein the first frame of the first image belongs to the video;
• and
• send the data of the first frame of image through a second link;
• and
• a terminal coupled to the server and configured to:
• send, to the server through a first link based on a first period, the first field of view information;
• and
• receive, from the server through the second link based on the second period, the data of the first frame of image.