CN102281436A - Wireless video transmission method and device, and network equipment - Google Patents
Wireless video transmission method and device, and network equipment Download PDFInfo
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Abstract
The invention provides a wireless video transmission method, a wireless video transmission device and network equipment. The wireless video transmission method comprises the following steps of: packing video frames output by a scalable video coder respectively to obtain different types of video code streams; collocating different quality of service (QoS) priorities for the video code streams according to the types of the video code streams; and transmitting the video code streams in a wireless mode according to the collocated QoS priorities. The wireless video transmission device comprises a forming module, a collocation module and a transmitting module, wherein the forming module is used for packing the video frames output by the scalable video coder respectively to form different types of video code streams; the collocation module is used for collocating different QoS priorities for the video code streams according to the types of the video code streams; and the transmitting module is used for transmitting the video code streams in the wireless mode according to the collocated QoS priorities. Compared with the prior art, the technical scheme can improve the transmission quality of wireless video and reduce video coding complexity.
Description
Technical field
The present invention relates to the wireless LAN communication technology, relate in particular to a kind of wireless video transmission method, device and the network equipment.
Background technology
WLAN (wireless local area network) (Wireless Local Area Network; Abbreviate as: universal developing rapidly of promoting multimedia application WLAN).The transmission course of wireless video mainly comprises: generate frame of video through video coding; Frame of video is carried out uniform packing form a video code flow; Then, this video code flow is sent to pending processing such as data link layer through transport layer, network layer successively; After data link layer is processed, this video code flow is placed other transmit queue of video (Video) level, gone out by wireless transmission then.Wherein, the fading channel under the wireless environment, signal interference and finite bandwidth etc. become the bottleneck of restriction wireless video transmission quality.
For under the finite bandwidth condition, guarantee the quality of wireless video as far as possible, prior art is mainly come the code check or the video quality of real time altering video according to the variation of network environment, initiatively to reduce the delivery flow rate of video.Wherein, the mode of obtaining the change information of network environment mainly contains two kinds of active feedback and passive monitorings.Wherein, the active feedback mode need be set up extra passage between transmit leg and recipient, by the change information of receive direction transmit leg feedback network environment; And passive monitoring mode is by transmit leg active monitoring network environment, and this mode does not need recipient's participation, but needs to set up correlation model by more environmental element (for example: signal to noise ratio, packet loss, network topology etc.), and its complexity is higher.
No matter be active feedback or passive monitoring, all need video coding layer consideration current network environment to control encoding rate, increase the complexity on the video coding, simultaneously, because the polytropy of network environment, make the control of video encoding rate can't reach corresponding real-time requirement, and then can't guarantee video quality.
Summary of the invention
The invention provides a kind of wireless video transmission method, device and the network equipment,, improve the transmission quality of wireless video in order under the situation of the complexity that does not increase video coding.
The invention provides a kind of wireless video transmission method, comprising:
The processing of respectively frame of video of scalable video encoder output being packed forms dissimilar video code flows;
According to the type of described video code flow, be the different service quality priority of described video code flow configuration;
According to the service quality priority that is disposed, described video code flow is sent with wireless mode.
The invention provides a kind of wireless video transmission device, comprising:
Form module, be used for respectively the frame of video of scalable video encoder output being packed processing, form dissimilar video code flows;
Configuration module is used for the type according to described video code flow, is the different service quality priority of described video code flow configuration;
Sending module is used for according to the service quality priority that is disposed, and described video code flow is sent with wireless mode.
The invention provides a kind of network equipment, comprise arbitrary wireless video transmission device provided by the invention.
Wireless video transmission method of the present invention, device and the network equipment, by being packed respectively, the frame of video of scalable video encoder output forms dissimilar video code flows, the service quality priority different according to the type configuration of video code flow, service quality priority according to configuration sends all types of video code flows, utilize the characteristics of graduated encoding technology, be the different service quality priority of dissimilar video frame configuration, can improve the transmission success rate of important frame of video, improve the transmission quality of wireless video.In addition, compared with prior art, technical solution of the present invention no longer improves the transmission quality of wireless video by the encoding rate of wireless network environment control of video coding, therefore, no longer be subjected to the environmental limit of wireless network, has reduced the complexity of video coding.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The flow chart of the wireless video transmission method that Fig. 1 provides for the embodiment of the invention one;
The flow chart of the wireless video transmission method that Fig. 2 provides for the embodiment of the invention two;
The structural representation of the wireless video transmission device that Fig. 3 provides for the embodiment of the invention three;
The structural representation of the wireless video transmission device that Fig. 4 provides for the embodiment of the invention four.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Along with the development of video coding technique, the gradable video encoding method that utilizes classification technique to produce the frame of video of different weights has become the main flow of current video coding field.Common gradable video encoding technology has MPEG4, H.264 waits.The present invention is based on the gradable video encoding technology a kind of technical scheme that improves the wireless video transmission quality is provided, need not control encoding rate according to wireless network environment when this technical scheme makes video coding, solve encoder complexity problem of higher in the prior art.
The flow chart of the wireless video transmission method that Fig. 1 provides for the embodiment of the invention one.As shown in Figure 1, the method for present embodiment comprises:
In present embodiment and following each embodiment, scalable video encoder can adopt any gradable video encoding technology, for example MPEG4, H.264 wait.The executive agent of present embodiment can be the network equipment of any support wireless video transmission technology, for example personal computer, multimedia server etc., and present embodiment is referred to as wireless video transmission device.Wherein, scalable video encoder can be used as the functional module of wireless video transmission device and is arranged within the wireless video transmission device, also can be independent of wireless video transmission device but is connected with wireless video transmission device.
Concrete, scalable video encoder is carried out encoding process according to the gradable video encoding method that is adopted to the video pictures of importing, and exports the frame of video of different weights.For scalable video encoder, the frame of video of different weights is by different output channel output, and promptly the gradable video encoding device will be exported the multi-channel video frame.Wireless video transmission device receives the frame of video of scalable video encoder output, and the processing of packing respectively forms dissimilar video code flows.Wherein, packing is handled and mainly is meant in transmission course, at the dissimilar frame of video of scalable video encoder output, at Internet protocol (Internet Protocol; Abbreviate as: IP) layer is stamped different COS mark (Terms ofService respectively; Abbreviate as: ToS), this operation belongs to prior art, and present embodiment is not described in detail.The type of video code flow has been represented the importance of video code flow, it is weighted value, this weighted value can determine that for example first output channel is exported the higher frame of video of weighted value according to the output channel of scalable video encoder, the frame of video that second output channel output weighted value is less etc.
In present embodiment and following each embodiment, QoS priority is used to represent the transmission quality of video code flow.Concrete, wireless video transmission device is the dissimilar different QoS priority of video code flow configuration according to the type of video code flow.Usually, the real-time that the wireless video transmission requirement is higher, therefore, wireless video transmission device can dispose higher QoS priority by the video code flow that importance is higher, the lower QoS priority of video code flow configuration that importance is lower, but be not limited to this.
Concrete, wireless video transmission device is positioned over dissimilar video code flows in each QoS priority transmit queue, and when obtaining transmitting time all types of video code flows is sent with wireless mode according to the QoS priority that is disposed.
The wireless video transmission method of present embodiment, by being packed respectively, the frame of video of scalable video encoder output forms dissimilar video code flows, the QoS priority different according to the type configuration of video code flow, QoS priority according to configuration sends all types of video code flows, utilize the characteristics of graduated encoding technology, be the different QoS priority of dissimilar video frame configuration, can improve the transmission success rate of important frame of video, improved the transmission quality of wireless video.In addition, present embodiment is based upon the dissimilar different QoS priority of video code flow configuration, and the encoding rate of no longer encoding by the wireless network environment control of video improves the transmission quality of wireless video, no longer is subjected to the restriction of wireless network environment, has reduced the complexity of video coding.
In the above-described embodiments; the type of the frame of video of scalable video encoder output is relevant with the coding method of being adopted; common gradable video encoding method can provide three types frame of video usually at present; be respectively main heavy frame, the heavy frame of inferior heavy frame and end; be respectively the frame type to the different importance of successfully having decoded, but be not limited to this in when decoding.Wherein, be example with MPEG4, main heavy frame is the I frame, and inferior heavy frame is the P frame, and the heavy frame in end is the B frame; The I frame is picture group (Group of Pictures; Abbreviate as: basic frame GOP) also is the reference frame of B frame and P frame.Based on this, wireless video transmission device will be respectively main heavy frame, the heavy frame of inferior heavy frame and end is stamped ToS at the IP layer, form main heavy frame video code flow, the heavy frame video code flow of inferior heavy frame video code flow and end; Accordingly, wireless video transmission device need be the different QoS priority of the heavy frame video code flow configuration in main heavy frame video code flow, inferior heavy frame video code flow and end, and sends each video code flow according to the priority that is disposed.
Wherein, in 802.11e, defined four kinds of QoS priority, be respectively: video (Video) priority, audio frequency (Audio) priority, best endeavors (BestEffort) priority and background (BackGround) priority.The different different application qualities of QoS priority representative.Audio priority is primarily aimed at the application that the transmission real-time is had relatively high expectations, Video priority is primarily aimed at the application scenarios of transferring large number of data piece, BestEffort priority is primarily aimed at the application scenarios that transmission has high reliability request, and BackGround priority is primarily aimed at the application scenarios that normal transmission requires.In various embodiments of the present invention, the priority of defined among the preferred 802.11e of QoS priority.
Based on the foregoing description, following examples will be that the functional unit of wireless video transmission device is an example with the scalable video encoder, be described further by the specific implementation process of instantiation to the foregoing description.
The flow chart of the wireless video transmission method that Fig. 2 provides for the embodiment of the invention two.Present embodiment realizes that based on the foregoing description as shown in Figure 2, the method for present embodiment comprises:
The encoder of step 21, wireless video transmission device adopts the gradable video encoding technology that video pictures is carried out encoding process, the main heavy frame of output, the heavy frame of inferior heavy frame and end.This step mainly is to be carried out by scalable video encoder.
Step 22, wireless video transmission device receive main heavy frame, the heavy frame of inferior heavy frame and end, and the processing of packing respectively, form main heavy frame video code flow, the heavy frame video code flow of inferior heavy frame video code flow and end.
This step mainly is to be carried out by the software of wireless video transmission device.Wherein, the main packing processing that weighs frame, the heavy frame of inferior heavy frame and end is carried out simultaneously, to guarantee the synchronous of video code flow.
Step 23, wireless video transmission device will be led the heavy frame video code flow in heavy frame video code flow, inferior heavy frame video code flow and end and pass through transport layer and network layer successively, be sent to data link layer.
This step mainly is to be carried out by the software of wireless video transmission device, is used for video code flow is sent to data link layer.Because therefore the definition of the assurance application quality that QoS priority is the 802.11e agreement to be made in data link layer, in the present embodiment, need transfer to data link layer with video code flow and handle.
Wherein, video code flow process transport layer comprises carries out transport layer process to video code flow, for example: add transmission control protocol (Transmission Control Protocol; Abbreviate as: TCP) or User Datagram Protocol (User Datagram Protocol; Abbreviate as: UDP) message is first-class.Video code flow comprises video code flow carried out network layer handles through network layer, for example: carry out the encapsulation process of IP layer, to the ToS set in the IP head etc.
Step 24, wireless video transmission device are main heavy frame video code flow configuration Audio priority, for inferior heavy frame video code flow configuration Video priority, are heavy frame video code flow configuration BestEffort priority in end or BackGround priority.
In this step, wireless video transmission device is that the QoS priority of all types of video code flow configurations is a kind of optimal way, but is not limited to this.
In the present embodiment, paying attention to the heavy frame video code flow in video code flow, inferior heavy frame video code flow and end is dissimilar video code flows, for have different importance for decoding end reconstructing video picture.Wherein, the importance of main heavy frame video code flow is the highest, and the importance of the heavy frame video code flow in end is minimum.To cause the whole video frame can't be decoded if main heavy frame video code flow is lost, even the lower time heavy frame video code flow of heavy frame video code flow and the end transmission success of importance also can't be correctly decoded, the whole video picture can't be presented.Therefore, in an embodiment, by disposing the main QoS priority that weighs the frame video code flow is Audio priority, and the QoS priority of the configuration time heavy frame video code flow of heavy frame video code flow and end is respectively other priority except that Audio priority, can promote the transmission priority of main heavy frame video code flow, and reduction time heavy frame video code flow and end weigh the transmission priority of frame video code flow, when guaranteeing that main heavy frame video code flow is by real-time Transmission, can improve the transmission success rate of main heavy frame video code flow.Owing to just can guarantee that the whole video frame is decoded after main heavy frame video code flow is successfully received, therefore, can reach the purpose of the transmission quality that improves wireless video by the transmission success rate that improves main heavy frame video code flow.
Step 25, wireless video transmission device will be led the heavy frame video code flow in heavy frame video code flow, inferior heavy frame video code flow and end respectively and be positioned in each self-corresponding QoS priority transmit queue.
Concrete, it is medium to be sent that wireless video transmission device is positioned over each QoS priority transmit queue with each video code flow.Wherein, dispose transmit queue respectively for each QoS priority on the wireless video transmission device, this transmit queue comes down to a kind of buffer queue that is made of spatial cache.
Wherein, wireless video transmission device need be that video code flow distributes physical resource (for example: carrier wave), owing to belong to prior art for video code flow distributes the operation of physical resource, do not do in the present embodiment and give unnecessary details in physical layer also before sending video code flow.
Step 26, wireless video transmission device will be led the heavy frame video code flow in heavy frame video code flow, inferior heavy frame video code flow and end and send with wireless mode.
Wherein, step 24-step 26 is all finished in data link layer, and wireless video transmission device specifically carries out link layer process to all types of video code flows, and finishes transmit operation.
The wireless video transmission method of present embodiment, by utilizing the characteristics of gradable video encoding technology, in data link layer is dissimilar video code flow configuration different QoS priority under transmit on the upper strata, and send all types of video code flows according to the QoS priority that is disposed, can guarantee that dissimilar video code flows can have different QoS transmission qualities, by improving the transmission success rate of important video code flow, reach the purpose of the transmission quality that improves wireless video.Compared with prior art, in the present embodiment, video coding process does not need to control encoding rate according to the network environment of feedback, neither needs to reduce encoder bit rate, does not need to reduce the transmission code rate of video code flow yet, has reduced the complexity of video coding.Further, in the present embodiment, can be according to importance and the dependence between the frame of video of video coding output, for each video code flow disposes corresponding QoS priority, when improving the wireless video transmission quality, can also improve the utilance of wireless bandwidth and the robustness of the transmission quality that guarantees dissimilar video code flows.
On the basis of the various embodiments described above, wireless video transmission device can also be realized the self feed back to radio network information channel according to the characteristic of QoS priority transmit queue.The laser propagation effect that different QoS priority is corresponding different, for example: the video code flow that has disposed higher QoS priority can be robbed faster and account for channel, and its transmission success rate height, time delay are little.When network environment changes, video code flow with high QoS priority can be transferred to receiving terminal with higher transmission success rate, thereby guarantee that receiving terminal has stable reception code check, and no longer as prior art, network environment is monitored and then guaranteed according to monitoring result change encoder bit rate the reception code check of receiving terminal.Utilize the self feed back characteristic of the own characteristic realization of QoS priority transmit queue to wireless channel, do not need real-time as prior art by wireless channel active monitoring packet loss being guaranteed code check changes yet, solved the problem of real-time, also increase simultaneously the transparency of video transmission, reduced the complexity of video transmission.
Based on above-mentioned, wireless video transmission device can also be adjusted into all types of QoS priority that video code flow disposed according to the network environment quality index before all kinds of video code flows are sent.Wherein, the network environment quality index can be wherein any one or its combination in any such as packet loss, signal to noise ratio or channel utilization.For example: when number of retransmissions increase or packet loss increase, can improve the QoS priority of main heavy frame, reduce the last QoS priority that weighs frame, this adjustment process can be carried out according to predefined algorithm, and present embodiment is not done qualification to the algorithm that is adopted.
In addition, on wireless video transmission device, can also set in advance the video quality index, for example: the video frame rate index is set, wireless video transmission device also can be according to the video quality index before sending video code flow, be adjusted into all types of QoS priority that video code flow disposed, with the transmission quality of further raising wireless video.For example: wireless video transmission device can be added up packet loss, and adopt existing algorithm to calculate current video frame rate in advance, the video frame rate that to calculate in advance compares with the video frame rate index that sets in advance then, and disposes the QoS priority of video code flow according to comparative result.If the video frame rate of calculating in advance is lower than video frame rate index, then can reduces the QoS priority of video code flow, otherwise can improve QoS priority.
The wireless video transmission method of present embodiment is by adjusting the QoS priority that is disposed, no matter the quality of network environment by different QoS priority transmit queues, can guarantee that the video code flow of different classifications transmits with different success rates.
The structural representation of the wireless video transmission device that Fig. 3 provides for the embodiment of the invention three.As shown in Figure 3, the device of present embodiment can be the network equipment of various support wireless video transmission technologys, for example can be personal computer, also can be multimedia server etc.The device of present embodiment comprises: form module 31, configuration module 32 and sending module 33.
Wherein, form module 31, be used for respectively the frame of video of scalable video encoder output being packed processing, form dissimilar video code flows; Configuration module 32 is connected with formation module 31, is used for the type according to video code flow, is the different QoS priority of video code flow configuration; Sending module 33 is connected with configuration module 32, is used for according to the QoS priority that is disposed video code flow being sent with wireless mode.
Each functional module of present embodiment wireless video transmission device can be used for carrying out the flow process of the wireless video transmission method that said method embodiment one provides, and its operation principle repeats no more, and sees the description of method embodiment for details.
The wireless video transmission device of present embodiment, the frame of video of scalable video encoder output can be packed respectively and form dissimilar video code flows, the QoS priority different according to the type configuration of video code flow, QoS priority according to configuration sends all types of video code flows, make full use of the characteristics of graduated encoding technology, be the different QoS priority of dissimilar video frame configuration, improved the transmission success rate of important frame of video, and then improve the transmission quality of wireless video.In addition, the present embodiment wireless video transmission device improves the transmission quality of wireless video with the encoding rate of control of video coding by the monitoring wireless network environment unlike prior art, no longer be subjected to the restriction of wireless network environment, also have the advantage of the complexity that reduces video coding.
The structural representation of the wireless video transmission device that Fig. 4 provides for the embodiment of the invention four.Present embodiment realizes that based on the foregoing description three as shown in Figure 4, the device of present embodiment also comprises: adjusting module 41.
Adjusting module 41, be connected with sending module 33 with configuration module 32 respectively, be used for before sending module 33 sends video code flow, according to network environment quality index or video quality index, be adjusted into the QoS priority of video code flow configuration, and trigger sending module 33 according to adjusted QoS priority transmission video code flow.Wherein, the network environment quality index can be following any one or its combination: packet loss, signal to noise ratio, number of retransmissions or channel utilization.
Above-mentioned adjusting module 41 can be used for carrying out the method flow of among the said method embodiment two the QoS priority that is disposed being adjusted, and its operation principle repeats no more, and sees the description among the method embodiment for details.
Further, the formation module 31 in the present embodiment wireless video transmission device comprises: first forms unit 311, second forms unit 312 and the 3rd formation unit 313, and is connected with scalable video code stream encoder respectively.Concrete, first forms unit 311, is used for processings of packing of the main heavy frame of scalable video encoder output formed the main frame video code flow that weighs; Second forms unit 312, is used for processings of packing of time heavy frame of scalable video encoder output, forms time to weigh the frame video code flow; The 3rd forms unit 313, is used for processings of packing of the heavy frame in the end of scalable video encoder output formed the end and weigh the frame video code flow.
Based on above-mentioned, the configuration module 32 in the present embodiment comprises: first dispensing unit 321, second dispensing unit 322 and the 3rd dispensing unit 323.Concrete, first dispensing unit 321 respectively with first formation unit 311 and the sending module 33, is used to main heavy frame video code flow configuration Audio priority, and triggers sending module 33 according to the main heavy frame video code flow of the Audio priority transmission of being disposed; Second dispensing unit 322 is connected with sending module 33 with the second formation unit 312 respectively, is used to time heavy frame video code flow configuration Video priority, and triggers sending module 33 according to the Video priority transmission of being disposed time heavy frame video code flow; The 3rd dispensing unit 323, be connected with sending module 33 with the 3rd formation unit 313 respectively, be used to heavy frame video code flow configuration BestEffort priority in end or BestGround priority, and trigger sending module 33 according to the heavy frame video code flow of BestEffort priority that is disposed or BestGround priority transmission end.
The wireless video transmission device of present embodiment, by adjusting module the QoS priority that is disposed is adjusted, no matter the quality of network environment by different QoS priority transmit queues, can guarantee that the video code flow of different classifications transmits with different success rates.In addition, the wireless video transmission device of present embodiment is the QoS priority that the video code flow configuration adapts according to the importance and the dependence between each video code flow of video code flow, when the transmission priority that improves important video code flow, the less important video code flow transmission priority of reduction are with raising wireless video transmission quality, can also improve the utilance of wireless bandwidth, guarantee that the different video code stream with identical transmission success rate transmission, improves the robustness of the transmission quality of each video code flow.
The embodiment of the invention five provides a kind of network equipment, comprises the wireless video transmission device that the various embodiments described above of the present invention provide.Wherein, the operation principle of wireless video transmission device and structure can be respectively referring to said method embodiment one or two and device embodiment three or four description, do not repeat them here.
The network equipment of present embodiment comprises wireless video transmission device, also can be used for carrying out the flow process of the wireless video transmission method that said method embodiment provides, can improve the transmission quality of wireless video equally, and compared with prior art can also reduce the complexity of video coding.In addition, also have and improve bandwidth availability ratio, guarantee that dissimilar video code flows advantage such as transmits with identical transmission success rate.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (11)
1. a wireless video transmission method is characterized in that, comprising:
The processing of respectively frame of video of scalable video encoder output being packed forms dissimilar video code flows;
According to the type of described video code flow, be the different service quality priority of described video code flow configuration;
According to the service quality priority that is disposed, described video code flow is sent with wireless mode.
2. wireless video transmission method according to claim 1 is characterized in that, according to the service quality priority that is disposed, also comprises before described video code flow sent with wireless mode:
According to network environment quality index or video quality index, be adjusted into the service quality priority of described video code flow configuration.
3. wireless video transmission method according to claim 2 is characterized in that, described network environment quality index is following any one or its combination: packet loss, signal to noise ratio or channel utilization.
4. according to claim 1 or 2 or 3 described wireless video transmission methods, it is characterized in that the described processing of respectively frame of video of scalable video encoder output being packed forms dissimilar video code flows and comprises:
With processings of packing of the main heavy frame of described scalable video encoder output, form the main frame video code flow that weighs;
With processings of packing of time heavy frame of described scalable video encoder output, form and time weigh the frame video code flow;
With processings of packing of the heavy frame in the end of described scalable video encoder output, form the end and weigh the frame video code flow.
5. wireless video transmission method according to claim 4 is characterized in that, described type according to described video code flow, for the different service quality priority of described video code flow configuration comprises:
Be described main heavy frame video code flow configuration audio frequency priority;
Be described heavy frame video code flow configuration video priority;
Be heavy frame video code flow configuration best endeavors priority in described end or background priority.
6. a wireless video transmission device is characterized in that, comprising:
Form module, be used for respectively the frame of video of scalable video encoder output being packed processing, form dissimilar video code flows;
Configuration module is used for the type according to described video code flow, is the different service quality priority of described video code flow configuration;
Sending module is used for according to the service quality priority that is disposed, and described video code flow is sent with wireless mode.
7. wireless video transmission device according to claim 6 is characterized in that, also comprises:
Adjusting module was used for before described sending module sends described video code flow, according to network environment quality index or video quality index, was adjusted into the service quality priority of described video code flow configuration.
8. wireless video transmission device according to claim 7 is characterized in that, described network environment quality index is following any one or its combination: packet loss, signal to noise ratio channel utilization.
9. according to claim 6 or 7 or 8 described wireless video transmission devices, it is characterized in that described formation module comprises:
First forms the unit, is used for processings of packing of the main heavy frame of described scalable video encoder output formed the main frame video code flow that weighs;
Second forms the unit, is used for processings of packing of time heavy frame of described scalable video encoder output, forms time to weigh the frame video code flow;
The 3rd forms the unit, is used for processings of packing of the heavy frame in the end of described scalable video encoder output formed the end and weigh the frame video code flow.
10. wireless video transmission device according to claim 9 is characterized in that, described configuration module comprises:
First dispensing unit is used to described main heavy frame video code flow configuration audio frequency priority;
Second dispensing unit is used to heavy frame video code flow configuration video priority described time;
The 3rd dispensing unit is used to heavy frame video code flow configuration best endeavors priority in described end or background priority.
11. a network equipment is characterized in that, comprises each described wireless video transmission device of claim 6-10.
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| CN103988543A (en) * | 2013-12-11 | 2014-08-13 | 华为技术有限公司 | Control device in wireless local area network, network system, and service processing method |
| CN105681931A (en) * | 2016-01-12 | 2016-06-15 | 清华大学 | Video data packet transmission method and system based on wireless network |
| CN106973066A (en) * | 2017-05-10 | 2017-07-21 | 福建星网智慧科技股份有限公司 | H264 encoded videos data transmission method and system in a kind of real-time communication |
| WO2021056575A1 (en) * | 2019-09-29 | 2021-04-01 | 华为技术有限公司 | Low-delay joint source-channel coding method, and related device |
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| CN103988543B (en) * | 2013-12-11 | 2018-09-07 | 华为技术有限公司 | Control device, network system in WLAN and method for processing business |
| CN105681931A (en) * | 2016-01-12 | 2016-06-15 | 清华大学 | Video data packet transmission method and system based on wireless network |
| CN105681931B (en) * | 2016-01-12 | 2018-12-28 | 清华大学 | A kind of video data package transmission method and system based on wireless network |
| CN106973066A (en) * | 2017-05-10 | 2017-07-21 | 福建星网智慧科技股份有限公司 | H264 encoded videos data transmission method and system in a kind of real-time communication |
| WO2021056575A1 (en) * | 2019-09-29 | 2021-04-01 | 华为技术有限公司 | Low-delay joint source-channel coding method, and related device |
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