Code stream selection system, method and equipment based on multi-code stream distributed video stitching

Abstract

The invention belongs to the field of audio and video, particularly relates to a code stream selection system, method and equipment based on multi-code stream distributed video stitching, and aims to solve the problems that in the prior art, the optimal video code stream selected by a receiving node cannot be ensured, and the consistency of video code stream selection cannot be ensured for a cross-screen window. The system comprises a video sending node, a multi-layer switching private network, a splicing video receiving node, a display device and a splicing control server, the splicing control server comprises an instruction receiving unit which is configured to receive window layout information input by a user; the instruction issuing unit issues a windowing instruction to the video splicing receiving node; and the code stream selection unit is configured to calculate the visual area of the window of each window, determine the corresponding priority and further select the to-be-received video code stream of each window. According to the invention, the reliability and effectiveness of the video code stream selected by the receiving node are improved, and the same window can be ensured to select the same code stream on different receiving nodes.

Description

technical field [0001] The invention belongs to the field of audio and video, and in particular relates to a code stream selection system, method and device based on multi-code stream distributed video splicing. Background technique [0002] The resource limitation of the video receiving node mainly includes the limitation of the bandwidth of the network port, the limitation of the decoding ability of the shallow compressed code stream and the deep compressed code stream, and the limitation of the PCIE bandwidth when the deep compressed code stream is transmitted inside the node. Because of this, it cannot be unlimited Use the shallow compression stream with the best video effect, but use these two streams more reasonably. [0003] Existing solutions usually select the code stream at the video receiving node. Combined with the actual capabilities of the receiving node, the shallow compression code stream is first selected, and then the deep compression code stream is selecte...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problem that the prior art cannot guarantee the optimal video code stream selected by the receiving node, and cannot guarantee the consistency of video code stream selection for cross-screen windows, the first On the one hand, a code stream selection system based on multi-stream distributed video splicing is proposed, the system includes: a video sending node, a multi-layer switching dedicated network, a splicing video receiving node, a display device, and a splicing control server; the video The sending node is connected to the input video source; the multi-layer switching private network is formed based on a plurality of switches, which are respectively connected to the video sending node, the splicing video receiving node, and the splicing control server through communication links; The splicing video receiving node is connected to the display device;

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