Panoramic video adaptive streaming media transmission method and system based on viewpoints

Abstract

The invention discloses a viewpoint-based panoramic video adaptive streaming media transmission method and system. The method comprises the steps: enabling a server to divide a panoramic video into different tiles in space, coding a plurality of tile videos into a panoramic video streaming file, and carrying out the packaging and slicing of the panoramic video streaming file; and predicting a visual field area watched by the user in the future by a client by using a linear regression method according to the historical viewpoint information of the panoramic video watched by the user, and playing the predicted panoramic video. According to the historical prediction deviation degree, the visual field area is properly expanded, the high code rate is selected for the tiles in the visual field area, the low code rate is selected for the tiles in the non-visual field area, and different code rates are dynamically selected for different tiles according to the network condition change, so that the video definition in the visual field area is improved, the jamming condition is reduced, and the user watching quality is effectively improved.

Description

Technical field[0001]The present invention relates to the field of panoramic video technology, and more particularly to a panoramic video adaptive streaming medium transmission method and system.Background technique[0002]Panoramic video is a video that performs a full range of 360 degrees with a 3D camera. When watching video, you can adjust the video up and down.[0003]The transmission of panoramic video requires a lot of bandwidth, but is limited by real network conditions. When users watch panoramic videos online, because the full video data is large, if only the video playback is smooth, the video code rate will result in the video code rate, resulting in a decrease in quality; If you only protect the high quality of watching video, it is easy to play carton. A existing panoramic video transmission method is to divide the video into a plurality of tiles (TILE), through the prediction of future viewpoints, draw in the future may appear in the user fov (field of view, field of view...

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a viewpoint-based panoramic video adaptive streaming media transmission method and system, aiming at solving the existing panoramic video in the prior art The transmission method has high requirements on the accuracy of viewpoint prediction. When the prediction is inaccurate or network fluctuations occur, the viewing quality of users will drop sharply.

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