CN103379381B - Video broadcasting method based on WAP gateway, WAP gateway and system - Google Patents

Abstract

The present invention relates to a video playback method based on a WAP gateway, a WAP gateway and a system. The method includes: when the WAP gateway receives an access request from a terminal browser, it judges the access request; when the access request is a video playback request, According to the video playback request, the video resource is obtained from the service provider server; after the video resource is processed, it is sent to the terminal browser. The invention saves the occupation of wireless bandwidth by adding a VO video processing module to the WAP gateway to compress, transcode, cache and other processing processes of video resources, and reduces the interaction and waiting time of requesting video service provider servers, and adopts polling The balanced distribution request mechanism forwards video requests, reduces the bit rate when the wireless channel is busy, and increases the bit rate when the wireless channel is idle. At the same time, the bit rate can be dynamically adjusted according to the attributes of the user terminal, thereby reducing the processing burden of the gateway and enhancing the user's video playback experience.

Description

Video playing method, WAP gateway and system based on WAP gateway

technical field

The present invention relates to the technical field of wireless communication, in particular to a video playing method based on a WAP (Wireless Application Protocol, wireless application protocol) gateway, a WAP gateway and a system.

Background technique

With the development of mobile communication technology, terminals using the WAP protocol to browse webpages are increasingly common. The current common WAP browsing process is: after the user clicks the portal home page in the terminal browser, the terminal initiates a request to the WAP gateway, and the WAP gateway returns a response from the service provider (SP). Sheet, cascading style sheet, also known as style style sheet) style and other related links automatically initiate follow-up requests.

However, with the continuous emergence of high-performance terminals, users are no longer satisfied with only visiting pages or pictures with relatively monotonous content. Video playback is more attractive to users. However, the existing WAP browsing mode cannot satisfy users' desire for video The demand for playback has the following defects:

1. Compared with ordinary pages, video files have larger playback resources and occupy more wireless bandwidth on the end user side during transmission;

2. Regarding the response from the video service provider, the download of video files by the WAP gateway cannot effectively reduce the traffic. For some larger video resources frequently accessed by users, the network bandwidth and gateway processing burden increase;

3. The WAP gateway does not dynamically adjust the transmission rate of the wireless channel code stream, which affects the user experience when channel resources are tight;

3. The WAP gateway does not transmit video resources reasonably and effectively according to the terminal attributes, which affects the user experience.

Contents of the invention

The main purpose of the present invention is to provide a video playback method, WAP gateway and system based on a WAP gateway, aiming at reducing the wireless bandwidth occupied by WAP video playback and enhancing user video playback experience.

In order to achieve the above object, the present invention proposes a video playing method based on WAP gateway, comprising:

When the WAP gateway receives the access request of the terminal browser, it judges the access request;

When the access request is a video play request, obtain video resources from a service providing server according to the video play request;

After the video resource is processed, it is sent to the terminal browser.

Preferably, the method also includes:

When the access request is a video playback request, determine whether the video playback request corresponds to a local cached video resource; if so, then

Send the cached video resource to the terminal browser; otherwise

Execute the step of acquiring video resources from the service providing server according to the video playing request.

Preferably, the step of judging the access request includes:

Analyzing the access request to obtain the URL or file suffix of the access request;

Matching the URL or file suffix of the access request with the video class list locally stored by the WAP gateway;

If there is a video list corresponding to the URL or file suffix of the access request in the video category list, it is judged that the access request is a video playback request; otherwise, it is a non-video playback request.

Preferably, after the step of judging the access request, it also includes:

When the access request is a non-video playback request, forwarding the non-video playback request to the service providing server;

receiving the response data returned by the service providing server;

Analyzing the response data to obtain the content type of the response data;

According to the content type, judge again whether the access request is a video playback request; if so, return to the step of obtaining video resources from the service provider server according to the video playback request, and disconnect the response chain with the service provider server at the same time road; otherwise

Forwarding the response data to the terminal browser.

Preferably, the processing of the video resource by the WAP gateway includes: compressing, transcoding and/or caching the video resource.

Preferably, the step of the WAP gateway obtaining video resources from the service provider server according to the video playback request specifically includes:

The WAP gateway evenly distributes the video playback requests in a polling manner, and acquires video resources from the service providing server.

Preferably, the method also includes:

According to the wireless channel resource occupancy attributes, user terminal attributes and/or frame attributes, the channel code stream is dynamically adjusted.

The present invention also proposes a WAP gateway for playing videos, including: a main control module and a VO video processing module, wherein:

The main control module is configured to judge the access request when receiving the access request from the terminal browser; when the access request is a video playback request, forward the video playback request to the VO video processing module; and forwarding the video resource returned by the VO video processing module to the terminal browser;

The VO video processing module is configured to obtain a video resource from a service provider server according to the video playback request when the access request is a video playback request, process the video resource, and send it to the main controller module.

Preferably, the VO video processing module is further configured to determine whether the video playback request corresponds to a local cached video resource when the access request is a video playback request; if so, pass the cached video resource through the The main control module forwards it to the terminal browser; otherwise, the video resource is obtained from the service providing server according to the video playback request.

Preferably, the main control module is also used for parsing the access request, obtaining the URL or file suffix of the access request; combining the URL or file suffix of the access request with the video category list stored locally by the WAP gateway Matching; if there is a video list corresponding to the URL or file suffix of the access request in the video class list, then it is judged that the access request is a video playback request; otherwise, it is a non-video playback request.

Preferably, the main control module is further configured to forward the non-video playback request to the service provider server when the access request is a non-video playback request; receive the response data returned by the service provider server; The response data is analyzed to obtain the content type of the response data; according to the content type, it is judged again whether the access request is a video playback request; if so, the video playback request is forwarded to the VO video processing module , while disconnecting the response link with the service providing server; otherwise, forwarding the response data to the terminal browser.

Preferably, the main control module is further configured to forward the video playback request to the VO video processing module through a round-robin balanced distribution mechanism, and at the same time carry relevant attribute parameters of the terminal in the video playback request;

The VO video processing module is further configured to dynamically adjust the channel code stream according to the relevant attribute parameters of the terminal.

Preferably, the processing of the video resource by the VO video processing module includes: compressing, transcoding and/or caching the video resource.

Preferably, the main control module is further configured to forward the video playback request to the VO video processing module according to whether a video SP whitelist and/or an access file suffix list is set in the video playback request.

The present invention also proposes a system for playing video, including a WAP gateway, a terminal browser and a service providing server both connected to the WAP gateway, wherein the WAP gateway is the above-mentioned WAP gateway.

A kind of video playing method based on WAP gateway, WAP gateway and system that the present invention proposes, increase VO (Video Object, video object) video processing module in WAP gateway and carry out processing procedures such as compression, transcoding, cache to video resource, save It reduces the occupation of wireless bandwidth, reduces the interaction and waiting time of the requesting video service provider server, and uses the round-robin balanced distribution request mechanism to forward video requests, reduces the bit rate when the wireless channel is busy, and increases the bit rate when the wireless channel is idle. The terminal attribute dynamically adjusts the code stream, thereby reducing the processing burden of the gateway and enhancing the user's video playback experience.

Description of drawings

Fig. 1 is the schematic flow chart of an embodiment of the video playing method based on WAP gateway of the present invention;

Fig. 2 is a schematic flow diagram of judging an access request in an embodiment of a video playing method based on a WAP gateway in the present invention;

Fig. 3 is the schematic flow chart of another embodiment of the video playing method based on WAP gateway of the present invention;

Fig. 4 is the schematic flow chart of another embodiment of the video playing method based on WAP gateway of the present invention;

Fig. 5 is the structural representation of an embodiment of the WAP gateway of playing video of the present invention;

FIG. 6 is a schematic structural diagram of an embodiment of a system for playing videos according to the present invention.

In order to make the technical solution of the present invention clearer and clearer, it will be further described below in conjunction with the accompanying drawings.

detailed description

The solution of the embodiment of the present invention is mainly: when the main control module of the WAP gateway receives the access request of the terminal browser, the access request is screened and judged, and if it is a video playback request, it is forwarded to the VO video processing of the WAP gateway. module, which obtains video resources from the service provider server, and the VO video processing module compresses, decodes and converts, streams adjusts, and caches the obtained video resources, and then sends them to the terminal browser through the main control module. For a video playback request, the main control module of the WAP gateway directly forwards the access request to the service provider server to obtain corresponding response data.

After the terminal initiates a video playback request, the traditional processing method of the WAP gateway is to download the video resource from the video service provider server and forward it to the terminal. For some large video resources frequently accessed by users, it will cause network bandwidth and gateway processing burden. increase.

The present invention modifies the way of pure downloading when the WAP gateway processes the video playback request, adds VO video processing module to the WAP gateway to compress, transcode, cache and other processes of video resources, and introduces the polling and balancing distribution request mechanism forwarding in the software state The video request is sent to the VO video processing module. The bit rate is reduced when the wireless channel is busy, and the bit rate is increased when the wireless channel is idle. The bit rate is dynamically adjusted according to the attributes of the user terminal, thereby enhancing the user's video playback experience.

Specifically, as shown in Figure 1, an embodiment of the present invention proposes a video playback method based on a WAP gateway, including:

Step S101, when the WAP gateway receives the access request from the terminal browser, it judges the access request;

The present embodiment introduces the VO video processing module on the basis of the traditional WAP gateway. The WAP gateway of the present embodiment includes a main control module and a VO video processing module. The VO video processing module and the main control module are based on the hypertext transfer protocol (HTTP) for data transfer. The WAP gateway receives the access request sent by the terminal browser through the main control module to browse portal web pages, pictures or videos, etc., and screens and judges the access request to determine whether the access request is a video playback request.

When the main control module judges whether the access request is a video playback request, it can judge whether the URL or file suffix of the parsed access request matches the video list in the video class list stored locally by the WAP gateway. If it matches, it is judged as Video playback request, otherwise, it is a non-video playback request.

Step S102, when the access request is a video play request, obtain video resources from the service providing server according to the video play request;

When the main control module of the WAP gateway judges that the access request of the terminal is a video playback request, it forwards the video playback request to the VO video processing module, and other non-video requests can be directly forwarded to the service provider server.

In order to reduce the network bandwidth and prevent the traffic congestion of the transmission channel, and reduce the processing burden of the VO video processing module, the main control module can evenly distribute the video playback request to the VO video processing module in a round-robin manner, and at the same time carry the video-related attribute parameters of the terminal, For example, attributes such as wireless channel resource occupancy attributes, user terminal screen size, and frames.

The VO video processing module forwards the video playback request sent by the main control module to the service provider server to obtain video resources. At the same time, it can dynamically adjust the channel code stream through the video-related attribute parameters of the terminal to improve the user experience of video playback.

Step S103, after processing the video resource, send it to the terminal browser.

After the VO video processing module obtains the video resources, it performs codec, code stream adjustment, compression and other processing on the video resources, and performs cache processing on the top video source. Among them, the compression can save the occupation of wireless bandwidth, and the cache can save the request for video service provision Server interaction and wait times.

After that, the VO video processing module forwards the processed video resources to the main control module; after receiving the video data forwarded by the VO video processing module, the main control module forwards the video data to the user terminal browser, and the user terminal can play the video.

In the specific implementation process, as shown in Figure 2, the steps of judging the access request in the above step S101 include:

Step S1011, analyzing the access request to obtain the URL (Uniform Resource Locator, Uniform Resource Locator) or file suffix of the access request;

Step S1012, matching the URL or file suffix of the access request with the video category list stored locally by the WAP gateway;

Step S1013, determine whether there is a video list corresponding to the URL or file suffix of the access request in the video class list, if so, then enter step S1014; otherwise, enter step S1015;

Step S1014, the access request is a video playback request;

Step S1015, the access request is not a video playback request.

This embodiment introduces a VO video processing module on the basis of the traditional WAP gateway. The VO video processing module obtains video resources from the video service provider server, and returns to the main control module of the WAP gateway after operations such as compression, caching, and transcoding. The control module forwards the video data to the user terminal, which reduces the wireless bandwidth occupied by the terminal side, the network bandwidth on the service provider side, and the number of interactions and waiting time between the WAP gateway and the service provider, effectively enhancing the user experience; At the same time, the main control module will notify the VO video processing module to dynamically adjust the code stream according to the wireless channel resource occupation degree, user terminal screen size, frame and other attributes, which greatly improves the user experience of video playback and saves bandwidth.

As shown in Figure 3, another embodiment of the present invention proposes a video playback method based on a WAP gateway. On the basis of the above-mentioned embodiment, after the above-mentioned step S101, it also includes:

Step S104, when the access request is a non-video playback request, forward the non-video playback request to the service providing server;

Step S105, receiving the response data returned by the service providing server;

Step S106, analyzing the response data to obtain the content type of the response data;

Step S107, according to the content type, judge again whether the access request is a video playback request; if so, enter step S102, and disconnect the response link with the service providing server at the same time; otherwise, enter step S108;

Step S108, forwarding the response data to the terminal browser.

The difference between this embodiment and the above-mentioned embodiment is that in this embodiment, when the main control module of the WAP gateway judges that the access request sent by the terminal browser is a non-video playback request, after receiving the response data returned by the service provider server, according to The response data judges again whether the access request is a video playback request.

Specifically, when it is not possible to judge whether it is a video request only through the URL video list and video file suffix, the content type (content-type) of the response data is parsed out according to the response data returned by the service provider server to the terminal, and according to the response The content type of the data judges whether the access request of the terminal is a video service request, that is, whether it matches the video content-type list of the WAP gateway. The response link of the service provider server to save bandwidth and reduce resource occupation; if there is no match, the response data returned by the service provider server is directly forwarded to the terminal browser.

The main control module of the WAP gateway in this embodiment communicates with the VO video processing module based on the HTTP protocol, and changes the traditional browser download video playback request to VO for caching, compression and other operations, reducing the wireless bandwidth occupied by the terminal side and the service Provider-side network bandwidth, and increase the interactive function between WAP gateway main control module and VO video processing module, increase compression, code stream adjustment, codec, reduce the number of interactions and waiting time between WAP gateway and service provider , which effectively enhances the user experience; at the same time, for some situations where it is not possible to judge whether it is a video request only through the URL video list and video file suffix, it is judged again whether the terminal’s access request is based on the response data returned to the terminal by the service provider server. Serving requests for videos improves the overall performance of the system and further improves the user experience.

As shown in Figure 4, another embodiment of the present invention proposes a video playback method based on a WAP gateway. On the basis of the above-mentioned first embodiment, after the above-mentioned step S101, it also includes:

Step S109, when the access request is a video playback request, determine whether the video playback request corresponds to a local cached video resource; if so, proceed to step S110; otherwise, proceed to step S102;

Step S110, sending the cached video resource to the terminal browser.

The difference between this embodiment and the above-mentioned first embodiment is that in this embodiment, the VO video processing module needs to determine whether the video content requested by the video playback request has been cached locally before forwarding the video playback request to the service provider server.

If the video content requested by the video playback request is cached content, the VO video processing module returns the cached content to the main control module, and then the main control module forwards the cached content to the terminal browser; if it is not cached, the VO The video processing module obtains video resources from the service provider server, performs operations such as compression, transcoding, and caching, and forwards the compressed or transcoded data to the terminal through the main control module.

In addition, based on the expansion of the above-mentioned solution of this embodiment, the video SP whitelist can also be added by the main control module of the WAP gateway, such as www.youku.com, and the main control module forwards the video playback request to the SP in the white list. The VO video processing module; or the main control module of the WAP gateway increases the access file suffix list, such as flv, mp4, etc., and the video playback request for the file suffix list is forwarded to the VO video processing module.

Compared with the existing technology, when the WAP gateway receives the video playback request initiated by the terminal, it downloads the video resource from the video service provider and forwards it to the terminal. For some large video resources frequently accessed by users, the network bandwidth is greatly reduced. And the disadvantage of the increase of the gateway processing burden, this embodiment has modified the pure download mode when the WAP gateway handles the video playback request, increases the processes such as compression, transcoding, and buffering of video resources by the VO video processing module, and introduces the next round of software status The query balance distribution request mechanism forwards the video request to the VO video processing module, reduces the bit rate when the wireless channel is busy, increases the bit rate when the wireless channel is idle, and dynamically adjusts the bit rate according to the user terminal attributes, thereby enhancing the user's video playback experience; at the same time, for the existing cache video resources, the cached resources are directly forwarded to the terminal browser according to the video playback request, without requesting the service provider server, thereby reducing the data transmission time and further enhancing the user's video playback experience.

As shown in Figure 5, the present invention also proposes a WAP gateway for playing videos, including: a main control module 501 and a VO video processing module 502, wherein:

The main control module 501 is configured to, when receiving an access request from a terminal browser, judge the access request; when the access request is a video playback request, forward the video playback request to the VO A video processing module 502; and forwarding the video resource returned by the VO video processing module 502 to the terminal browser;

The VO video processing module 502 is configured to obtain a video resource from a service provider server according to the video play request when the access request is a video play request, process the video resource, and send it to the host control module 501.

The main control module 501 is further configured to forward the non-video playback request to the service provider server when the access request is a non-video playback request; receive the response data returned by the service provider server; The response data is analyzed to obtain the content type of the response data; according to the content type, it is judged again whether the access request is a video playback request; if so, the video playback request is forwarded to the VO video processing module 502, At the same time disconnect the response link with the service providing server; otherwise, forward the response data to the terminal browser.

This embodiment introduces a VO video processing module 502 on the basis of the traditional WAP gateway, and the VO video processing module 502 and the main control module 501 perform data transmission based on the hypertext transfer protocol. The WAP gateway receives the access request sent by the terminal browser through the main control module 501 to browse portal pages, pictures or videos, and screens and judges the access request to determine whether the access request is a video playback request.

When judging whether the access request is a video playback request, the main control module 501 can judge whether the URL or file suffix of the parsed access request matches the video list in the video class list stored locally by the WAP gateway, and if it matches, then judge It is a video playback request, otherwise, it is a non-video playback request.

When the main control module 501 of the WAP gateway determines that the terminal's access request is a video playback request, it forwards the video playback request to the VO video processing module 502, and other non-video requests can be directly forwarded to the service provider server.

In order to reduce the network bandwidth and prevent the traffic congestion of the transmission channel, and reduce the processing burden of the VO video processing module 502, the main control module 501 can evenly distribute the video playback requests to the VO video processing module 502 in a round-robin manner, and at the same time carry the video related information of the terminal. Attribute parameters, such as wireless channel resource occupancy attributes, user terminal screen size, and frame attributes.

The VO video processing module 502 forwards the video playback request sent by the main control module 501 to the service provider server to obtain video resources. At the same time, it can dynamically adjust the channel code stream through the video-related attribute parameters of the terminal to improve the user experience of video playback.

After the VO video processing module 502 acquires the video resource, it performs codec, code stream adjustment, compression and other processing on the video resource, and performs cache processing on the top video source, wherein the compression can save the occupation of wireless bandwidth, and the cache can save the request video service Provides server interaction and wait times.

Afterwards, the VO video processing module 502 forwards the processed video resources to the main control module 501; after the main control module 501 receives the video data forwarded by the VO video processing module 502, it forwards the video data to the user terminal browser, and the user terminal immediately Video can be played.

Further, in this embodiment, when the main control module 501 of the WAP gateway judges that the access request sent by the terminal browser is a non-video playback request, after receiving the response data returned by the service provider server, it is judged again according to the response data whether the access request is Video playback request.

Specifically, when it is not possible to judge whether it is a video request only through the URL video list and video file suffix, the content type (content-type) of the response data is parsed out according to the response data returned by the service provider server to the terminal, and according to the response The content type of the data judges whether the access request of the terminal is a video class service request, that is, whether it matches the WAP gateway video class content-type list, and if it matches, the video playback request is forwarded to the VO video processing module 502 again, and the before disconnection The response link with the service provider server to save bandwidth and reduce resource occupation; if there is no match, the response data returned by the service provider server will be directly forwarded to the terminal browser.

Further, the VO video processing module 502 is also used to determine whether the video playback request corresponds to a local cached video resource when the access request is a video playback request; if so, pass the cached video resource through The main control module 501 forwards it to the terminal browser; otherwise, the video resource is obtained from the service provider server according to the video playback request.

Specifically, before the VO video processing module 502 forwards the video play request to the service providing server, it needs to determine whether the video content requested by the video play request has been cached locally.

If the requested video content of the video playback request is cached content, then the VO video processing module 502 returns the cached content to the main control module 501, and then the main control module 501 forwards the cached content to the terminal browser; if it is not cached , the VO video processing module 502 obtains video resources from the service provider server, performs operations such as compression, transcoding, and caching, and simultaneously forwards the compressed or transcoded data to the terminal through the main control module 501.

In addition, based on the expansion of the above-mentioned solution of this embodiment, the main control module 501 of the WAP gateway can also add a video SP whitelist, such as www.youku.com, and the main control module 501 will send the video playback request to the SP in the whitelist. Forward to the VO video processing module 502; or the main control module 501 of the WAP gateway increases the access file suffix list, such as flv, mp4, etc., and the video playback request for the file suffix list is forwarded to the VO video processing module 502.

Compared with the existing technology, when the WAP gateway receives the video playback request initiated by the terminal, it downloads the video resource from the video service provider and forwards it to the terminal. For some large video resources frequently accessed by users, the network bandwidth is greatly reduced. And the disadvantage of the increase of the gateway processing burden, this embodiment has modified the pure download mode when the WAP gateway handles the video playback request, increases the VO video processing module 502 to processes such as compression, transcoding, and buffering of video resources, and introduces The round-robin balanced distribution request mechanism forwards the video request to the VO video processing module 502, reduces the bit rate when the wireless channel is busy, increases the bit rate when the wireless channel is idle, and dynamically adjusts the bit rate according to the attributes of the user terminal, thereby enhancing the user's video playback experience; If there are cached video resources, the cached resources are directly forwarded to the terminal browser according to the video playback request, without requesting the service provider server, thereby reducing the data transmission time and further enhancing the user's video playback experience.

As shown in Figure 6, the present invention also proposes a system for playing video, including a WAP gateway 601 and a terminal browser 600 and a service providing server 602 that are all connected to the WAP gateway 601, wherein the WAP gateway 601 and the terminal Please refer to the foregoing embodiments for the principle of interaction between the browser 600 and the service providing server 602 to realize video playback, and details are not repeated here.

The embodiment of the present invention is based on the video playback method of the WAP gateway, the WAP gateway and the system, the main control module of the WAP gateway and the VO video processing module communicate based on the HTTP protocol, and the traditional browser download type video playback request is changed to VO for caching, Operations such as compression reduce the wireless bandwidth occupied by the terminal side and the network bandwidth occupied by the service provider side. And increase the interactive function between WAP gateway main control module and VO video processing module, increase compression, code stream adjustment, codec, and cache operation of top video resources, reduce the number of interactions and waiting between WAP gateway and service provider time, effectively enhancing the user experience.

The above is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or process transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technical fields , are all included in the scope of patent protection of the present invention in the same way.

Claims (13)

1. A video playing method based on a wireless application protocol WAP gateway, characterized in that, comprising: When the WAP gateway receives the access request of the terminal browser, it judges the access request; When the access request is a video play request, obtain video resources from a service providing server according to the video play request; After processing the video resource, send it to the terminal browser; After the step of judging the access request, it also includes: When the access request is a non-video playback request, forwarding the non-video playback request to the service providing server; receiving the response data returned by the service providing server; Analyzing the response data to obtain the content type of the response data; According to the content type, judge again whether the access request is a video playback request; if so, return to the step of obtaining video resources from the service provider server according to the video playback request, and disconnect the response chain with the service provider server at the same time road; otherwise Forwarding the response data to the terminal browser. 2. The method according to claim 1, further comprising: When the access request is a video playback request, determine whether the video playback request corresponds to a local cached video resource; if so, then Send the cached video resource to the terminal browser; otherwise Execute the step of acquiring video resources from the service providing server according to the video playing request. 3. The method according to claim 1, wherein the step of judging the access request comprises: Analyzing the access request to obtain the Uniform Resource Locator URL or file suffix of the access request; Matching the URL or file suffix of the access request with the video class list locally stored by the WAP gateway; If there is a video list corresponding to the URL or file suffix of the access request in the video category list, it is judged that the access request is a video playback request; otherwise, it is a non-video playback request. 4. The method according to any one of claims 1-3, wherein the WAP gateway processing the video resource comprises: compressing, transcoding and/or caching the video resource. 5. The method according to claim 4, wherein said WAP gateway obtains a video resource from a service provider server according to said video playback request and specifically comprises: The WAP gateway evenly distributes the video playback requests in a polling manner, and acquires video resources from the service providing server. 6. The method according to claim 5, further comprising: According to the wireless channel resource occupancy attributes, user terminal attributes and/or frame attributes, the channel code stream is dynamically adjusted. 7. A WAP gateway for playing video, comprising: a master control module and a video optimization VO video processing module, wherein: The main control module is configured to judge the access request when receiving the access request from the terminal browser; when the access request is a video playback request, forward the video playback request to the VO video processing module; and forwarding the video resource returned by the VO video processing module to the terminal browser; The VO video processing module is configured to obtain a video resource from a service provider server according to the video playback request when the access request is a video playback request, process the video resource, and send it to the main controller module; The main control module is further configured to forward the non-video playback request to the service provider server when the access request is a non-video playback request; receive the response data returned by the service provider server; Response data is parsed to obtain the content type of the response data; according to the content type, judge whether the access request is a video playback request again; if so, forward the video playback request to the VO video processing module, and disconnect Open a response link with the service providing server; otherwise forward the response data to the terminal browser. 8. The WAP gateway according to claim 7, characterized in that, The VO video processing module is also used to determine whether the video playback request corresponds to a local cached video resource when the access request is a video playback request; if so, pass the cached video resource through the main control The module is forwarded to the terminal browser; otherwise, the video resource is obtained from the service provider server according to the video playback request. 9. WAP gateway according to claim 7, is characterized in that, The main control module is also used for parsing the access request, obtaining the URL or file suffix of the access request; matching the URL or file suffix of the access request with the video class list locally stored by the WAP gateway; If there is a video list corresponding to the URL or file suffix of the access request in the video category list, it is judged that the access request is a video playback request; otherwise, it is a non-video playback request. 10. WAP gateway according to claim 7, is characterized in that, The main control module is further configured to forward the video playback request to the VO video processing module through a round-robin balanced distribution mechanism, and at the same time carry relevant attribute parameters of the terminal in the video playback request; The VO video processing module is further configured to dynamically adjust the channel code stream according to the relevant attribute parameters of the terminal. 11. The WAP gateway according to any one of claims 7-10, characterized in that, The processing of the video resource by the VO video processing module includes: compressing, transcoding and/or caching the video resource. 12. The WAP gateway according to claim 11, characterized in that, The main control module is further configured to forward the video playback request to the VO video processing module according to whether a video service provider SP whitelist and/or an access file suffix list are set in the video playback request. 13. A system for playing video, characterized in that it comprises a WAP gateway and a terminal browser and a service providing server that are all connected to the WAP gateway, wherein the WAP gateway is any one of claims 7-12 The WAP gateway described above.