Video transmission method and device

Abstract

The invention discloses a video transmission method and device. The method comprises following steps of determining a total current network bandwidth; determining code streams of videos currently transmitted by video channels; combining the videos transmitted by the video channels according to preset rules when the network bandwidth needing to be occupied by the total code streams of the videos currently transmitted by the video channels is greater than the total current network bandwidth; and then transmitting the videos from the video channels. Through adoption of the scheme, when the bandwidth is insufficient, all the video channels are monitored under the condition of smooth playing; the videos are played smoothly; and moreover, the demanded video image quality is ensured.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a video transmission method and device. Background technique [0002] When current monitoring equipment (for example: DVR (Digital Video Recorder, hard disk video recorder), NVR (NetworkVideo Recorder, network hard disk video recorder), etc.) performs multi-channel monitoring, each video channel will establish a corresponding network connection, and each network connection is Independent of each other, with independent data links, network handles, and other resources. When the user needs to monitor multiple video channels at the same time, the same number of network connections will be established correspondingly. These network connections can meet the functional requirements when network bandwidth is sufficient. However, in the case of insufficient bandwidth, each network connection will occupy resources. At the same time, if the video resolution and code stre...

AI Technical Summary

Problems solved by technology

However, in the case of insufficient bandwidth, each network connection will occupy resources. At the same time, if the video resolution and code stream are high, the network load pressure will be heavy and the bandwidth will be tight, resulting in some data loss during video transmission. Video stuttering, mosaic, etc.

If the normal transmission in the case of insufficient bandwidth is ensured by dropping frames (such as only transmitting I frames) or reducing the bit rate, the picture quality will be affected and the video will not be smooth

If you want to ensure the quality of the picture and the smoothness of the video, the ultimate solution is to reduce the number of channels to monitor and reduce the size of the bit stream in network transmission, which will cause some channels to be unable to monitor in real time

[0003] The disadvantage of the existing technology is: in the case of insufficient bandwidth, if all video channels must be monitored, the video playback will not be smooth, and the video picture quality will be affected

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