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A video and video frame technology, applied in the field of video communication, can solve problems such as high network bandwidth requirements and difficult client access, and achieve the effect of reducing network bandwidth requirements
Active Publication Date: 2017-12-19
HANGZHOU HIKVISION DIGITAL TECH
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[0010] In practical applications, not all networks can achieve 128Mbps bandwidth, especially the playback client and data forwarding server are often not in the same network
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[0114] Example 1: Combining the information given in Table 1, figure 2 Provides a flow diagram of a target video frame selection method. It is assumed that, in the order of priority from high to low, the order of the five video frame discarding methods listed in Table 1 is: Method A, Method B, Method C, For mode D and mode E, the first preset threshold is equal to 0.9.
[0115] Estimate the current data transmission speed S Cur Later, when determining the target video frame mode,
[0116] First, determine the method of discarding the video frame to be determined as method A, and calculate the theoretical data transmission speed S corresponding to method A according to the bandwidth compression rate of method A, the video playback magnification and the bit rate of the video to be played back A , To determine the current data transmission speed S Cur Is it greater than or equal to the theoretical data transmission speed S corresponding to mode A A *0.9, if yes, the target video frame...
Example Embodiment
[0122] Example 2: Based on the video cloud storage system, the above video playback method is introduced.
[0123] image 3 A schematic diagram of the structure of the video cloud storage system provided by the embodiments of this application. The video cloud storage system includes: client (video integrated platform), CVM (Cloud Video Master, storage management server), CVS (CloudVideo Slave, storage server), and CDT (Cloud Data Transmitter, data forwarding server).
[0124] Figure 4 For image 3 On the basis of, a schematic diagram of the signaling flow of a video playback method is provided. Specifically, the video playback process includes the following steps:
[0125] Step1: The client sends a CDT address acquisition request to the CVM. After the CVM receives the CDT address acquisition request, it acquires the CDT address and returns an available CDT address to the client;
[0126] Step2: The client sends a video playback request to the CDT according to the received CDT address...
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Abstract
The embodiment of the invention discloses a video playback method and an apparatus, which relate to the technical field of video communication. The method comprises steps: a data acquisition request for a to-be-played-back video sent by a client is received, wherein a current data transmission speed is estimated on the basis of a history data transmission speed; a target video frame discarding mode is selected from the preset video frame discarding modes on the basis of the current data transmission speed and a theoretical data transmission speed corresponding to a preset video frame discarding mode, wherein the theoretical data transmission speed is determined on the basis of a video playback multiple speed; and a discarding processing is carried out on the video data of the to-be-played-back video in accordance with the target video frame discarding mode and the video data after the discarding processing are transmitted to the client, and thus, the client plays back the to-be-played-back video. When the scheme provided by the embodiment of the invention is applied, the requirement for network bandwidth during video playback can be reduced.
Description
technical field [0001] The present application relates to the technical field of video communication, in particular to a video playback method and device. Background technique [0002] With the rapid development of computer and network technology, video cloud storage system has been widely used, especially in the field of video surveillance. Common video cloud storage systems include: client, management server, storage server and data forwarding server. [0003] In addition, in the video cloud storage system, it is often necessary to play back the video at multiple speeds. In the prior art, video playback in the video cloud storage system generally includes the following steps: [0004] The client requests the storage management server for the address of the data forwarding server; [0005] The storage management server determines the data forwarding server, and sends the address of the data forwarding server to the client; [0006] The client sends a video playback reque...
Claims
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