Method and device for smoothing video bit stream

Abstract

The invention discloses a method and a device for smoothing a video bit stream so as to improve the quality of a video. The method comprises the steps of using an encoder to receive a video frame to be encoded; using the encoder to carry out encoding treatment on the video frame to be encoded, and reducing the frequency of sending the video frame when the encoder determines that the video bit stream for transmitting the video frame is larger than or equal to a set first video bit stream threshold. The adoption of the technical scheme can control the sending end to send video data through the relatively smooth video bit stream, avoid the problem of data packet dropout caused by too large video bit stream and further improve the quality of the video received by the receiving end.

Description

technical field [0001] The invention relates to the communication field, in particular to a video code stream smoothing method and a video code stream smoothing device. Background technique [0002] When a video call is made between terminals communicating through a digital network, a large number of video data packets need to be exchanged between the terminals. Due to the limited bandwidth of the digital network, the sending end needs to encode and compress the original video data before sending it at a fixed frame rate. to the receiving end. In the process of video communication, since the video data packets are transmitted at a fixed frame rate between terminals, if the transmission code stream is too large, it may cause packet loss during network transmission or the receiving end is too late to receive video data packets. The phenomenon of packet, so that the video data packet received by the receiving end is incomplete and the quality of the received video is poor; if ...

AI Technical Summary

Problems solved by technology

Although the above method can smooth the video code stream to a certain extent, if the number of key frames sent per unit time is large, the video code stream may be large, and there may still be packet loss during transmission or the receiving end is too late to receive And lead to the problem of packet loss, so that the quality of the video at the receiving end is poor; and the key frame is to compress and encode the whole image, so the key frame is usually relatively large; in addition, if two adjacent frames are not key frames The image difference is large, because the non-key frame is to compress the difference between the current image and the adjacent image, so the data volume of the encoded non-key frame is relatively large

Therefore, when the data volume of the key frames and / or non-key frames sent by the sender is relatively large, the video code stream may be relatively large, so that the quality of the video received by the receiver is also poor.

[0004] In order to ensure the quality of the video received by the receiving end, the video code stream at the receiving end is currently controlled to smoothly control the video code stream, such as increasing the image compression ratio or optimizing the video coding algorithm, but increasing the image compression ratio will reduce the encoded image quality , which may result in a small section of blurred images in the video images received by the receiving end, which need to be repaired by subsequent video frames to become clear. Therefore, the use of the existing smooth video stream method will make the received poor video quality

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