CN112055177A - Video layering-based negotiation transmission method, electronic device and recording medium - Google Patents
Video layering-based negotiation transmission method, electronic device and recording medium Download PDFInfo
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Abstract
The application discloses a video layering-based negotiation transmission method, electronic equipment and a storage medium, wherein the video layering-based negotiation transmission method comprises the following steps: the method comprises the steps that first equipment obtains a monitoring picture video, a current monitoring area grade and a corresponding monitoring picture transmission level grade, and generates corresponding first target bandwidth information; under the condition that the transmission bandwidth between the first equipment and the video monitoring platform is smaller than a first target bandwidth, the first equipment sends the first target bandwidth information to the second equipment; the second equipment acquires first surplus bandwidth information between the second equipment and the video monitoring platform and returns the first surplus bandwidth information to the first equipment; the first equipment sends the monitoring picture video to a target second equipment of which the first surplus bandwidth is larger than the first target bandwidth; and the target second equipment forwards the monitoring picture video to the video monitoring platform through the base station. According to the scheme, other monitoring equipment with sufficient bandwidth forwards the monitoring picture video, and network resources can be effectively allocated.
Description
Technical Field
The present application relates to the field of communication application technologies, and in particular, to a negotiation transmission method based on video layering, an electronic device, and a computer-readable storage medium.
Background
Video monitoring technology has been one of the application technology hotspots concerned by people, and is widely applied to many occasions due to the characteristics of intuition, convenience, rich information content and the like. In recent years, with the development of computer technology, the improvement of image processing technology, the popularization of broadband networks and the continuous and rapid development of the domestic security video monitoring market, the application field of video monitoring is more extensive in various industries, so that how to utilize advanced information technology to research a high-quality high-speed negotiation transmission system suitable for various occasions is the primary task in the current video monitoring field.
At present, under 4G/5G network environments with high people flow density and strong distribution randomness, such as tourist attractions or shopping malls, when high-peak network resources such as crowd aggregation occur, the situation that bandwidth is overloaded or insufficient easily occurs in a single base station. If the monitoring device still directly pushes the video through the base station, the problem of delay of playing card pause can easily occur. When the user and the monitoring equipment are in the same base station, competition is easy to occur when network resources are insufficient, so that the internet access requirement of the user is influenced, and the stability of the monitoring network is influenced. If the number of base stations is increased, the cost is higher, and the utilization rate of the base stations in the off-peak period is low.
Disclosure of Invention
The application at least provides a negotiation transmission method based on video layering, an electronic device and a computer readable storage medium.
A first aspect of the present application provides a negotiation transmission method based on video layering, which is applied to a negotiation transmission system, where the negotiation transmission system at least includes a video monitoring platform, a base station, and a first device and a plurality of second devices, which are respectively in communication connection with the video monitoring platform through the base station; the negotiation transmission method comprises the following steps:
the first equipment acquires a monitoring picture video, a current monitoring area grade and a corresponding monitoring picture transmission level grade, and generates corresponding first target bandwidth information;
under the condition that the transmission bandwidth between the first equipment and the video monitoring platform is smaller than a first target bandwidth, the first equipment sends the first target bandwidth information to the second equipment;
the second equipment acquires first surplus bandwidth information between the second equipment and the video monitoring platform and returns the first surplus bandwidth information to the first equipment;
the first device sends the monitoring picture to a target second device of which the first surplus bandwidth is larger than the first target bandwidth in a video mode;
and the target second equipment forwards the monitoring picture video to the video monitoring platform through the base station.
Wherein, the negotiation transmission method further comprises:
under the condition that the first surplus bandwidth is smaller than the first target bandwidth, the second device compares the monitoring area level of the second device with the current monitoring area level of the first device;
when the level of the monitored area per se is smaller than the level of the current monitored area of the first device, the second device evaluates and reduces the level of the transmission level of the monitored picture per se based on the level difference of the monitored area, and generates second surplus bandwidth information according to the level difference, wherein the second surplus bandwidth is larger than the first target bandwidth;
the first device sends the monitoring picture to the second residual bandwidth or the target second device of which the first residual bandwidth is larger than the first target bandwidth in a video mode;
and the target second equipment forwards the monitoring picture video to the video monitoring platform.
Wherein, the negotiation transmission method further comprises:
and after receiving the forwarded video notification of the first device, the target second device corresponding to the second surplus bandwidth information reduces the transmission level of the monitoring picture based on the level difference of the monitoring area.
Wherein, the negotiation transmission method further comprises:
the first equipment detects whether the real-time transmission bandwidth between the first equipment and the video monitoring platform is greater than or equal to the first target bandwidth;
if so, the first device directly sends the monitoring picture video to the video monitoring platform through the base station, and stops sending the monitoring picture video to the target second device.
After the step of directly sending the monitoring picture video to the video monitoring platform by the first device, the negotiation transmission method further includes:
and the target second equipment corresponding to the second surplus bandwidth information stops forwarding the monitoring picture video of the first equipment and recovers the transmission level grade of the monitoring picture.
Wherein the monitoring picture transmission level comprises a base layer and an enhancement layer;
the negotiation transmission method further comprises:
under the condition that the first surplus bandwidth and the second surplus bandwidth of the second equipment are both smaller than the first target bandwidth, the first equipment continuously judges whether the first surplus bandwidth or the second surplus bandwidth of the two target second equipment is respectively larger than the bandwidth required by the transmission of the monitoring picture video base layer and the bandwidth required by the transmission of the monitoring picture video enhancement layer;
if yes, the first device sends the basic layer part of the monitoring picture video to one of the target second devices, and sends the enhanced layer part of the monitoring picture video to the other target second device;
and after the video monitoring platform acquires the monitoring picture videos forwarded by the two target second devices, sequencing the base layer and the enhancement layer of the monitoring picture videos.
After the video monitoring platform acquires the monitoring picture videos forwarded by the two target second devices, the step of sequencing the base layer and the enhancement layer of the monitoring picture videos comprises the following steps:
the video monitoring platform acquires a video forwarding request of the first equipment, wherein the video forwarding request comprises an equipment serial number of the first equipment and transmission level information of the monitoring picture video;
the first device independently encodes and encapsulates a base layer of the monitoring picture video into a first video frame, generates first video frame extension header information, and sends the first video frame and the first video frame extension header information to the one target second device, wherein the first video frame extension header information comprises a hierarchical sequence number of the base layer in the monitoring picture video;
the first device independently encodes and encapsulates an enhancement layer of the monitored picture video into a second video frame, generates second video frame extension header information, and sends the second video frame and the second video frame extension header information to the other target second device, wherein the second video frame extension header information comprises a hierarchical sequence number of the enhancement layer in the monitored picture video, and the video frame sequence numbers of the first video frame extension header information and the second video frame extension header information are the same;
the two target second devices respectively forward the first video frame and the first video frame extension header information thereof, and the second video frame extension header information thereof to the video monitoring platform;
and the video monitoring platform sequences the base layer and the enhancement layer of the monitoring picture video based on the first video frame extension header information and the second video frame extension header information.
Wherein the video monitoring platform sequences the base layer and the enhancement layer of the monitored picture video based on the first video frame extension header information and the second video frame extension header information, and comprises:
and the video monitoring platform puts the first video frame and the second video frame with the same video frame serial number into a buffer queue, and sorts the first video frame and the second video frame according to the level serial number to form a target video frame.
Wherein, the negotiation transmission method further comprises:
under the condition that both a first residual bandwidth and a second residual bandwidth of the second device are smaller than the first target bandwidth, the first device reduces the transmission level of a monitoring picture in the monitoring picture video to generate second target bandwidth information;
the first device sends the processed monitoring picture video to a target second device of which the first surplus bandwidth or the second surplus bandwidth is larger than a second target bandwidth;
and the target second equipment forwards the processed monitoring picture video to the video monitoring platform through the base station.
Wherein, the first device and the second device carry out data transmission by the D2D technology.
A second aspect of the present application provides an electronic device, which includes a memory and a processor coupled to each other, where the processor is configured to execute program instructions stored in the memory to implement the negotiation transmission method in the first aspect.
A third aspect of the present application provides a computer-readable storage medium having stored thereon program instructions that, when executed by a processor, implement the negotiation transmission method in the first aspect described above.
In the method, first equipment acquires a monitoring picture video, a current monitoring area grade and a corresponding monitoring picture transmission level grade, and generates corresponding first target bandwidth information; under the condition that the transmission bandwidth between the first equipment and the video monitoring platform is smaller than a first target bandwidth, the first equipment sends the first target bandwidth information to the second equipment; the second equipment acquires first surplus bandwidth information between the second equipment and the video monitoring platform and returns the first surplus bandwidth information to the first equipment; the first equipment sends the monitoring picture video to a target second equipment of which the first surplus bandwidth is larger than the first target bandwidth; and the target second equipment forwards the monitoring picture video to the video monitoring platform through the base station. According to the scheme, other monitoring equipment with sufficient bandwidth forwards the monitoring picture video, and network resources can be effectively allocated.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.
Fig. 1 is a schematic diagram of a framework of an embodiment of a negotiation transmission system provided in the present application;
fig. 2 is a schematic diagram of a framework of another embodiment of a negotiation transmission system provided in the present application;
fig. 3 is a flowchart illustrating a first embodiment of a negotiation transmission method provided in the present application;
fig. 4 is a flowchart illustrating a negotiation transmission method according to a second embodiment of the present application;
fig. 5 is a flowchart illustrating a negotiation transmission method according to a third embodiment of the present application;
fig. 6 is a flowchart illustrating a negotiation transmission method according to a fourth embodiment of the present application;
fig. 7 is a schematic diagram of a framework of an embodiment of a negotiation transmission apparatus provided in the present application;
FIG. 8 is a block diagram of an embodiment of a computer-readable storage medium provided herein.
Detailed Description
The following describes in detail the embodiments of the present application with reference to the drawings attached hereto.
In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular system structures, interfaces, techniques, etc. in order to provide a thorough understanding of the present application.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship. Further, the term "plurality" herein means two or more than two. In addition, the term "at least one" herein means any one of a plurality or any combination of at least two of a plurality, for example, including at least one of A, B, C, and may mean including any one or more elements selected from the group consisting of A, B and C.
Referring to fig. 1, fig. 1 is a schematic diagram of a negotiation transmission system in a normal network environment according to an embodiment of the present invention. The negotiation transmission system 100 includes a video monitoring platform 11, a monitoring device a and a base station 1 which are respectively in communication connection, a monitoring device B and a base station 2, and a monitoring device C and a base station 3. The monitoring equipment A, the monitoring equipment B and the monitoring equipment C are respectively accessed to the adjacent base station access points, wherein other relay front-end equipment is omitted in the connection process.
Under normal conditions, the front-end equipment and the common user can share one base station resource for network access, the monitoring equipment A, the monitoring equipment B and the monitoring equipment C respectively monitor the pedestrian flow conditions of respective monitoring areas, and the risk level of the current monitoring area is evaluated through the density of the pedestrian flow. And meanwhile, layering monitoring pictures according to the risk level of the current monitoring area, and selectively transmitting the layered monitoring pictures to a video monitoring platform. When the people flow density is higher and the risk of the monitored area is higher, a complete picture needs to be transmitted, and the network resource of the monitored picture video needs to be guaranteed preferentially. When the density of the human flow is smaller and the risk of the monitoring area is lower, the picture of the complete hierarchy can not be transmitted, and partial network resources are made available for other key monitoring area devices.
The monitoring area grade distribution of the application is exemplified by the people flow density parameter, but is not limited to the reference, and also comprises the traffic flow density, the accident scene occurrence situation, the natural disaster occurrence situation and the like.
The network resources of each base station are relatively fixed, and need to be provided for the monitoring device and the common user. When the number of the common users accessing the same base station is small, the base station has enough residual bandwidth to provide the monitoring device for network transmission, and at this time, the monitoring device may perform network transmission through the accessed base station, as shown in fig. 1. When the crowd of common users accessing the same base station is gathered, the residual bandwidth of the base station is not enough for the monitoring equipment to carry out network transmission. Meanwhile, the area where the monitoring device is located belongs to a high-risk monitoring area, and the monitoring device needs to have enough bandwidth to transmit the current monitoring picture video. At this time, the monitoring device needs to forward the monitoring picture video through other monitoring devices and the base station, so as to achieve the effect of effectively allocating network resources.
Referring to fig. 2 and fig. 3 in detail, fig. 2 is a schematic diagram of a framework of another embodiment of a negotiation transmission system provided in the present application, and fig. 3 is a schematic flowchart of a first embodiment of a negotiation transmission method provided in the present application.
In the negotiation transmission system 100 shown in fig. 2, the monitoring device a initiates D2D networking through D2D (device to device) technology, and selects the monitoring device B under the video monitoring platform from the D2D network. Furthermore, the monitoring device A forwards and transmits the current monitoring picture video to the video monitoring platform 11 through the monitoring device B, so that the robustness of the negotiation transmission system in a 4G/5G environment and network transmission resources of a key monitoring area are guaranteed, the deployment number of base stations is reduced, and the load balancing capability of the base stations is improved.
Specifically, please refer to the negotiation transmission method shown in fig. 3 for the negotiation transmission process between the negotiation transmission systems 100, which includes the following steps:
step S11: the first equipment acquires the monitoring picture video and the current monitoring area grade and generates corresponding first target bandwidth information.
When the negotiation transmission system 100 formally starts to operate, the video monitoring platform 11 obtains and records device information such as device IP, serial number, MAC address, and the like of all accessed monitoring devices.
It should be noted that the monitoring device a in fig. 2 corresponds to a first device, and the monitoring devices B and C correspond to a second device.
The monitor picture in the embodiment of the present disclosure performs layered processing on the picture by using an svc (scalable Video coding) coding technology, and may include three layers, namely a base layer, an enhancement layer 1, and an enhancement layer 2. The relationship between the monitoring area level and the corresponding monitoring screen transmission level is specifically shown in the following table:
relation table of monitoring area grade and monitoring picture transmission grade
As can be seen from the above table, the higher the level of the monitored area is, the more the transmitted video picture level is, the better the video quality is, and the larger the required network bandwidth is. In other embodiments, other monitoring area ranking rules may also be adopted, and are not described herein again.
Step S12: and under the condition that the transmission bandwidth between the first equipment and the video monitoring platform is smaller than the first target bandwidth, the first equipment sends the first target bandwidth information to the second equipment.
The monitoring equipment A calculates first target bandwidth information required by network transmission according to the current monitoring area level and the corresponding monitoring picture transmission level. Further, the monitoring device a obtains transmission bandwidth information between itself and the video monitoring platform 11, and compares the size of the remaining bandwidth of the accessed base station with the first target bandwidth. The transmission bandwidth information may be directly queried and obtained from the video monitoring platform 11 by the monitoring device a.
When the transmission bandwidth between the monitoring device a and the video monitoring platform 11 is greater than the first target bandwidth, it indicates that the network resource at this time is sufficient to complete the network transmission task of the monitoring device a for the monitoring picture video, and at this time, the monitoring device a only needs to directly transmit the monitoring picture video to the accessed base station, and the accessed base station transmits the monitoring picture video to the video monitoring platform 11. When the transmission bandwidth between the monitoring device a and the video monitoring platform 11 is smaller than the first target bandwidth, it indicates that the network resource at this time is not enough to complete the network transmission task of the monitoring device a for the monitoring picture video, and at this time, the monitoring device a needs to send the first target bandwidth information to at least one second device, that is, the monitoring device B and/or the monitoring device C.
Specifically, the monitoring device a acquires information such as device IP, serial number, and MAC address of all accessed monitoring devices from the video monitoring platform 11, and sends a forwarding access request. The video monitoring platform 11 authorizes the monitoring device a to allow forwarding access after verifying the forwarding access request of the monitoring device a. The monitoring device A performs D2D networking and matching on other monitoring devices under the monitoring video platform 11 through the D2D technology.
Step S13: the second equipment acquires first surplus bandwidth information between the second equipment and the video monitoring platform and returns the first surplus bandwidth information to the first equipment.
The second device obtains transmission bandwidth information between itself and the video monitoring platform 11, and calculates first surplus bandwidth information according to the transmission bandwidth information.
Step S14: and the first equipment sends the monitoring picture video to the target second equipment of which the first surplus bandwidth is larger than the first target bandwidth.
Step S15: and the target second equipment forwards the monitoring picture video to the video monitoring platform through the base station.
The target second device forwards the monitoring picture video of the monitoring device a to the video monitoring platform 11 through the base station connected to the target second device.
After the monitoring device a obtains the first residual bandwidth information fed back by the plurality of second devices, the target second device capable of meeting the network transmission requirement of the monitoring device a is obtained by comparing the size of the first residual bandwidth with the size of the first target bandwidth. For example, in the negotiation transmission system 100 of fig. 2, the first residual bandwidth of the monitoring device B is greater than the first target bandwidth of the monitoring device a, and at this time, the monitoring device B becomes a target second device that forwards the monitoring screen video of the monitoring device a.
Further, the monitoring device a may select, as the target second device, the monitoring device that satisfies the maximum first margin bandwidth in the network transmission requirement of the monitoring device a.
In the embodiment of the disclosure, a first device acquires a monitoring picture video, a current monitoring area level and a corresponding monitoring picture transmission level, and generates corresponding first target bandwidth information; under the condition that the transmission bandwidth between the first equipment and the video monitoring platform is smaller than a first target bandwidth, the first equipment sends the first target bandwidth information to the second equipment; the second equipment acquires first surplus bandwidth information between the second equipment and the video monitoring platform and returns the first surplus bandwidth information to the first equipment; the first equipment sends the monitoring picture video to a target second equipment of which the first surplus bandwidth is larger than the first target bandwidth; and the target second equipment forwards the monitoring picture video to the video monitoring platform through the base station. According to the scheme, other monitoring equipment with sufficient bandwidth forwards the monitoring picture video, and network resources can be effectively allocated.
Referring to fig. 4, fig. 4 is a flowchart illustrating a negotiation transmission method according to a second embodiment of the present application. Specifically, the negotiation transmission method of the embodiment of the present disclosure includes the following steps:
step S21: the first equipment acquires the monitoring picture video and the current monitoring area grade and generates corresponding first target bandwidth information.
Step S22: and under the condition that the transmission bandwidth between the first equipment and the video monitoring platform is smaller than the first target bandwidth, the first equipment sends the first target bandwidth information to the second equipment.
Step S23: the second equipment obtains first surplus bandwidth information between the second equipment and the video monitoring platform, and compares the level of the monitoring area of the second equipment with the level of the current monitoring area of the first equipment under the condition that the first surplus bandwidth of the second equipment is smaller than the first target bandwidth.
The second device obtains transmission bandwidth information between itself and the video monitoring platform 11, and calculates first surplus bandwidth information according to the transmission bandwidth information.
And the second equipment directly returns the first surplus bandwidth information to the first equipment under the condition that the first surplus bandwidth of the second equipment is larger than the first target bandwidth or the monitoring area level of the second equipment is higher than the monitoring area level of the monitoring equipment A.
When the first residual bandwidth of the second device is smaller than the first target bandwidth and the level of the monitoring area of the second device is lower than the level of the monitoring area of the monitoring device a, the second device may reduce the level of the transmission level of the monitoring screen of the second device, so as to reduce the bandwidth requirement of network transmission of the second device and meet the forwarding requirement of the monitoring device a, and please refer to step S24.
Step S24: and when the level of the monitoring area per se is smaller than the level of the current monitoring area of the first equipment, the second equipment evaluates and reduces the level of the transmission level of the monitoring picture per se based on the level difference of the monitoring area, and generates second surplus bandwidth information according to the level difference, wherein the second surplus bandwidth is larger than the first target bandwidth.
The second device calculates a monitoring region level difference of the monitoring region level of the second device from the current monitoring region level of the monitoring device A, and evaluates the transmission level of the monitoring picture which needs to be reduced according to the monitoring region level difference, so that second residual bandwidth information is generated, and the second residual bandwidth is smaller than the first residual bandwidth.
Step S25: and the first equipment sends the monitoring picture video to the second residual bandwidth or the target second equipment of which the first residual bandwidth is larger than the first target bandwidth.
The monitoring device A selects a second device with the second margin bandwidth or the first margin bandwidth larger than the first target bandwidth as a target second device, and sends a monitoring picture video and a forwarding video notification to the target second device.
Step S26: and the target second equipment forwards the monitoring picture video to the video monitoring platform through the base station.
The target second device forwards the monitoring picture video of the monitoring device a to the video monitoring platform 11 through the base station connected to the target second device.
Further, after receiving the forwarded video information of the monitoring device a, the target second device determines whether the first residual bandwidth of the target second device is greater than the first target bandwidth. If yes, directly forwarding a monitoring picture video of the monitoring equipment A; if not, reducing the self-monitoring area picture transmission proportion according to the monitoring area grade difference, and reserving enough spare bandwidth to forward the monitoring picture grade of the monitoring equipment A.
It should be noted that, in the process of the above steps S21 to S26, the monitoring device a may detect whether the real-time transmission bandwidth with the video monitoring platform 11 is greater than or equal to the first target bandwidth. If not, continuing the negotiation transmission process of the steps S21-S26; if so, stopping sending the monitoring picture video to the target second device, and switching back to the transmission mode of directly sending the monitoring picture video to the video monitoring platform 11.
When the monitoring device a resumes sending the monitoring picture video directly to the video monitoring platform 11, the target second device stops forwarding the monitoring picture video of the monitoring device a, and restores the transmission level of the monitoring picture subjected to the degradation processing to the original level.
In the embodiment of the disclosure, a first device acquires a monitoring picture video and a current monitoring area grade, and generates corresponding first target bandwidth information; under the condition that the transmission bandwidth between the first equipment and the video monitoring platform is smaller than a first target bandwidth, the first equipment sends the first target bandwidth information to the second equipment; the second equipment acquires first residual bandwidth information between the second equipment and the video monitoring platform, and compares the level of a monitoring area of the second equipment with the level of a current monitoring area of the first equipment under the condition that the first residual bandwidth of the second equipment is smaller than a first target bandwidth; when the level of the monitoring area per se is smaller than the level of the current monitoring area of the first device, the second device evaluates and reduces the level of the transmission level of the monitoring picture per se based on the level difference of the monitoring area, and generates second surplus bandwidth information according to the level difference, wherein the second surplus bandwidth is larger than the first target bandwidth; the first equipment sends the monitoring picture video to second residual bandwidth or target second equipment with the first residual bandwidth larger than the first target bandwidth; and the target second equipment forwards the monitoring picture video to the video monitoring platform. According to the scheme, other monitoring equipment with sufficient bandwidth forwards the monitoring picture video, and network resources can be effectively allocated.
Referring to fig. 5, fig. 5 is a flowchart illustrating a negotiation transmission method according to a third embodiment of the present application. Specifically, the negotiation transmission method of the embodiment of the present disclosure includes the following steps:
step S31: the first equipment acquires the monitoring picture video and the current monitoring area grade and generates corresponding first target bandwidth information.
Step S32: and under the condition that the transmission bandwidth between the first equipment and the video monitoring platform is smaller than the first target bandwidth, the first equipment sends the first target bandwidth information to the second equipment.
Step S33: the second equipment obtains first surplus bandwidth information between the second equipment and the video monitoring platform, and compares the level of the monitoring area of the second equipment with the level of the current monitoring area of the first equipment under the condition that the first surplus bandwidth of the second equipment is smaller than the first target bandwidth.
Step S34: and when the level of the monitoring area per se is smaller than the level of the current monitoring area of the first equipment, the second equipment evaluates and reduces the level of the transmission level of the monitoring picture per se based on the level difference of the monitoring area, and generates second surplus bandwidth information according to the level difference, wherein the second surplus bandwidth is larger than the first target bandwidth.
Step S35: and under the condition that the first surplus bandwidth and the second surplus bandwidth of the second equipment are both smaller than the first target bandwidth, the first equipment continuously judges whether the first surplus bandwidth or the second surplus bandwidth of the two target second equipment is respectively larger than the bandwidth required by the transmission of the monitoring picture video base layer and the bandwidth required by the transmission of the monitoring picture video enhancement layer.
After the monitoring device a obtains first surplus bandwidth information and second surplus bandwidth information fed back by the plurality of second devices, a target second device capable of meeting the network transmission requirement of the monitoring device a is obtained by comparing the sizes of the first surplus bandwidth, the second surplus bandwidth and the first target bandwidth. For example, in the negotiation transmission system 100 of fig. 2, if the first residual bandwidth of the monitoring device B is greater than the first target bandwidth of the monitoring device a, the monitoring device B becomes the target second device for forwarding the monitoring screen video of the monitoring device a.
Further, the monitoring device a may select, as the target second device, the monitoring device that satisfies the maximum first margin bandwidth in the network transmission requirement of the monitoring device a.
When the residual bandwidth fed back by the second device is smaller than the first target bandwidth, it indicates that no separate second device can meet the video forwarding requirement of the monitoring device a. At this time, the monitoring device a may calculate a bandwidth required for transmission of the base layer in the monitoring picture video and a bandwidth required for transmission of the enhancement layer in the monitoring picture video, and continuously determine whether the first residual bandwidths of the two target second devices in all the second devices are respectively greater than the bandwidth required for transmission of the base layer in the monitoring picture video and the bandwidth required for transmission of the enhancement layer in the monitoring picture video.
If the network transmission task exists, it is stated that one target second device can undertake the network transmission task of forwarding the base layer in the monitoring picture video of the monitoring device a, and another target second device can undertake the network transmission task of forwarding the enhancement layer in the monitoring picture video of the monitoring device a. By means of independent transmission of partial hierarchical pictures in the monitoring picture video by the plurality of target second devices, flexibility and robustness of the negotiation transmission system can be effectively improved.
Step S36: the first device sends the basic layer part of the monitoring picture video to one of the target second devices, and sends the enhanced layer part of the monitoring picture video to the other target second device.
The monitoring device A independently encodes and encapsulates a base layer of a monitoring picture video into a first video frame, generates first video frame extension header information, and sends the first video frame and the first video frame extension header information to the one target second device, wherein the first video frame extension header information at least comprises a level sequence number of the base layer in the monitoring picture video.
The monitoring device A independently encodes and encapsulates the enhancement layer of the monitoring picture video into a second video frame, generates second video frame extension header information, and sends the second video frame and the second video frame extension header information to another target second device, wherein the second video frame extension header information at least comprises the level sequence number of the enhancement layer in the monitoring picture video. It should be noted that the enhancement layer in step S36 may specifically include one or more of the first enhancement layer and the second enhancement layer in the monitoring picture video, specifically based on the monitoring area level. For example, when the monitored area level is a high-risk monitored area, the enhancement layers are the first enhancement layer and the second enhancement layer; when the monitored area level is a low-risk monitored area, the enhancement layer is the first enhancement layer.
It should be noted that, since the two target second devices acquire the same frame of monitoring picture video of the monitoring device a, the video frame sequence numbers of the first video frame extension header information and the second video frame extension header information are the same, so as to indicate that the sources of the first video frame and the second video frame are the same.
Specifically, the first video frame extension header and the second video frame extension header are encoded according to bytes, and the corresponding video frame extension header structure refers to the following table:
SVC video frame extension header structure table
| 0 | 1 | 2 | 3 |
| SVC frame identification | Total number of layers of SVC | The current frame is in the layer number | Reserved field |
Step S37: after the video monitoring platform acquires the monitoring picture videos forwarded by the two target second devices, the base layer and the enhancement layer of the monitoring picture videos are sequenced.
The video monitoring platform 11 obtains a forwarded video request of the monitoring device a, and verifies and obtains the device serial number of the monitoring device a and the level information of the monitoring picture video in the forwarded video request.
After the video monitoring platform 11 respectively acquires the first video frame and the second video frame from the two target second devices, the video monitoring platform identifies the first video frame extension header information and the second video frame extension header information according to the hierarchy level information of the monitoring picture video, and obtains the sequencing parameters of the first video frame and the second video frame. The sequencing parameters at least comprise the level sequence number of the base layer in the monitoring picture video and the level sequence number of the enhancement layer in the monitoring picture video. The video monitoring platform 11 sequences the first video frame and the second video frame according to the corresponding hierarchical sequence number according to the sequencing parameters, and finally obtains a monitoring picture video transmitted by the monitoring device a.
Specifically, in the normal operation process of the negotiation transmission system 100, the video monitoring platform 11 puts the first video frame and the second video frame corresponding to the monitoring device a with the same device serial number into the cache line, and sorts all the video frames in the cache line from small to large according to the video frame serial numbers. Then, the video monitoring platform 11 selects a first video frame and a second video frame with the same video frame serial number, merges the first video frame extension header information and the second video frame extension header information into an image sequencing video frame extension header parameter, wherein the image sequencing video frame extension header parameter corresponds to the device serial number of the monitoring device a.
Referring to fig. 6, fig. 6 is a flowchart illustrating a negotiation transmission method according to a fourth embodiment of the present application. Specifically, the negotiation transmission method of the embodiment of the present disclosure includes the following steps:
step S41: the first equipment acquires the monitoring picture video and the current monitoring area grade and generates corresponding first target bandwidth information.
Step S42: and under the condition that the transmission bandwidth between the first equipment and the video monitoring platform is smaller than the first target bandwidth, the first equipment sends the first target bandwidth information to the second equipment.
Step S43: the second equipment obtains first surplus bandwidth information between the second equipment and the video monitoring platform, and compares the level of the monitoring area of the second equipment with the level of the current monitoring area of the first equipment under the condition that the first surplus bandwidth of the second equipment is smaller than the first target bandwidth.
Step S44: and when the level of the monitoring area per se is smaller than the level of the current monitoring area of the first equipment, the second equipment evaluates and reduces the level of the transmission level of the monitoring picture per se based on the level difference of the monitoring area, and generates second surplus bandwidth information according to the level difference, wherein the second surplus bandwidth is larger than the first target bandwidth.
Step S45: and under the condition that the first surplus bandwidth and the second surplus bandwidth of the second equipment are both smaller than the first target bandwidth, the first equipment reduces the transmission level of the monitoring picture in the monitoring picture video to generate second target bandwidth information.
Further, when the residual bandwidth of all the second devices is smaller than the first target bandwidth, it indicates that the network resources of the other monitoring devices of the video monitoring platform 11 and the accessed base station cannot complete the network transmission task of the monitoring device a for the monitoring picture video.
At this time, the monitoring device a may reduce the requirement of the first target bandwidth by reducing its own monitoring picture transmission level, i.e. reducing the transmission resource of the enhancement layer. Specifically, the monitoring device a performs a level reduction process on the transmission level of the monitoring screen of the monitoring device a, and generates second target bandwidth information according to the transmission level of the monitoring screen after the level reduction process. Wherein the second target bandwidth is less than the first target bandwidth.
Further, since for example a high-risk monitoring area, it is required to ensure the lowest picture quality, i.e. the lowest monitoring picture transmission level, to meet the monitoring requirement of the video monitoring platform 11. Therefore, the monitoring device a is provided with a preset bandwidth, and when the second target bandwidth information is generated, it is determined whether the second target bandwidth is greater than the preset bandwidth. If yes, re-judging whether the first residual bandwidth or the second residual bandwidth of the two target second devices is respectively larger than the bandwidth required by the transmission of the monitoring picture video base layer and the bandwidth required by the transmission of the monitoring picture video enhancement layer, and entering the step S46; if not, the current monitoring picture video, the current monitoring area level and the corresponding monitoring picture transmission level are obtained again, namely, the steps S41 to S45 are executed again.
Step S46: and the first equipment sends the processed monitoring picture to target second equipment of which the first surplus bandwidth or the second surplus bandwidth is larger than the second target bandwidth in a video mode.
Step S47: and the target second equipment forwards the processed monitoring picture video to the video monitoring platform through the base station.
Referring to fig. 7, fig. 7 is a schematic diagram of a framework of an embodiment of a negotiation transmission apparatus provided in the present application. The negotiation transmission device 70 comprises a memory 71 and a processor 72 coupled to each other, and the processor 72 is configured to execute program instructions stored in the memory 71 to implement the steps in any one of the negotiation transmission method embodiments described above. In one particular implementation scenario, the electronic device 70 may include, but is not limited to: a microcomputer, a server, and the electronic device 70 may also include a mobile device such as a notebook computer, a tablet computer, and the like, which is not limited herein.
In particular, the processor 72 is configured to control itself and the memory 71 to implement the steps in any of the above-described embodiments of the negotiation transmission method. The processor 72 may also be referred to as a CPU (Central Processing Unit). The processor 72 may be an integrated circuit chip having signal processing capabilities. The Processor 72 may also be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. Additionally, the processor 72 may be collectively implemented by an integrated circuit chip.
Referring to fig. 8, fig. 8 is a block diagram illustrating an embodiment of a computer-readable storage medium according to the present application. The computer readable storage medium 80 stores program instructions 801 that can be executed by the processor, the program instructions 801 being for implementing the steps in any of the above-described negotiated transmission method embodiments.
In some embodiments, functions of or modules included in the apparatus provided in the embodiments of the present disclosure may be used to execute the method described in the above method embodiments, and specific implementation thereof may refer to the description of the above method embodiments, and for brevity, will not be described again here.
The foregoing description of the various embodiments is intended to highlight various differences between the embodiments, and the same or similar parts may be referred to each other, and for brevity, will not be described again herein.
In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a module or a unit is merely one type of logical division, and an actual implementation may have another division, for example, a unit or a component may be combined or integrated with another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some interfaces, and may be in an electrical, mechanical or other form.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Claims (12)
1. A negotiation transmission method based on video layering is characterized in that the negotiation transmission method is applied to a negotiation transmission system, wherein the negotiation transmission system at least comprises a video monitoring platform, a base station and a first device and a plurality of second devices which are respectively in communication connection with the video monitoring platform through the base station; the negotiation transmission method comprises the following steps:
the first equipment acquires a monitoring picture video, a current monitoring area grade and a corresponding monitoring picture transmission level grade, and generates corresponding first target bandwidth information;
under the condition that the transmission bandwidth between the first equipment and the video monitoring platform is smaller than a first target bandwidth, the first equipment sends the first target bandwidth information to the second equipment; m is
The second equipment acquires first surplus bandwidth information between the second equipment and the video monitoring platform and returns the first surplus bandwidth information to the first equipment;
the first device sends the monitoring picture to a target second device of which the first surplus bandwidth is larger than the first target bandwidth in a video mode;
and the target second equipment forwards the monitoring picture video to the video monitoring platform through the base station.
2. The negotiation transmission method of claim 1,
the negotiation transmission method further comprises:
under the condition that the first surplus bandwidth is smaller than the first target bandwidth, the second device compares the monitoring area level of the second device with the current monitoring area level of the first device;
when the level of the monitored area per se is smaller than the level of the current monitored area of the first device, the second device evaluates and reduces the level of the transmission level of the monitored picture per se based on the level difference of the monitored area, and generates second surplus bandwidth information according to the level difference, wherein the second surplus bandwidth is larger than the first target bandwidth;
the first device sends the monitoring picture to the second residual bandwidth or the target second device of which the first residual bandwidth is larger than the first target bandwidth in a video mode;
and the target second equipment forwards the monitoring picture video to the video monitoring platform.
3. The negotiation transmission method of claim 2,
the negotiation transmission method further comprises:
and after receiving the forwarded video notification of the first device, the target second device corresponding to the second surplus bandwidth information reduces the transmission level of the monitoring picture based on the level difference of the monitoring area.
4. The negotiation transmission method of claim 3,
the negotiation transmission method further comprises:
the first equipment detects whether the real-time transmission bandwidth between the first equipment and the video monitoring platform is greater than or equal to the first target bandwidth;
if so, the first device directly sends the monitoring picture video to the video monitoring platform through the base station, and stops sending the monitoring picture video to the target second device.
5. The negotiation transmission method of claim 4,
after the step of directly sending the monitoring picture video to the video monitoring platform by the first device, the negotiation transmission method further includes:
and the target second equipment corresponding to the second surplus bandwidth information stops forwarding the monitoring picture video of the first equipment and recovers the transmission level grade of the monitoring picture.
6. The negotiation transmission method according to claim 2, wherein the monitoring picture transmission level comprises a base layer and an enhancement layer;
the negotiation transmission method further comprises:
under the condition that the first surplus bandwidth and the second surplus bandwidth of the second equipment are both smaller than the first target bandwidth, the first equipment continuously judges whether the first surplus bandwidth or the second surplus bandwidth of the two target second equipment is respectively larger than the bandwidth required by the transmission of the monitoring picture video base layer and the bandwidth required by the transmission of the monitoring picture video enhancement layer;
if yes, the first device sends the basic layer part of the monitoring picture video to one of the target second devices, and sends the enhanced layer part of the monitoring picture video to the other target second device;
and after the video monitoring platform acquires the monitoring picture videos forwarded by the two target second devices, sequencing the base layer and the enhancement layer of the monitoring picture videos.
7. The negotiation transmission method of claim 6,
the video monitoring platform obtains the monitoring picture videos forwarded by the two target second devices, and then sequences the base layer and the enhancement layer of the monitoring picture videos, wherein the steps comprise:
the video monitoring platform acquires a video forwarding request of the first equipment, wherein the video forwarding request comprises an equipment serial number of the first equipment and transmission level information of the monitoring picture video;
the first device independently encodes and encapsulates a base layer of the monitoring picture video into a first video frame, generates first video frame extension header information, and sends the first video frame and the first video frame extension header information to the one target second device, wherein the first video frame extension header information comprises a hierarchical sequence number of the base layer in the monitoring picture video;
the first device independently encodes and encapsulates an enhancement layer of the monitored picture video into a second video frame, generates second video frame extension header information, and sends the second video frame and the second video frame extension header information to the other target second device, wherein the second video frame extension header information comprises a hierarchical sequence number of the enhancement layer in the monitored picture video, and the video frame sequence numbers of the first video frame extension header information and the second video frame extension header information are the same;
the two target second devices respectively forward the first video frame and the first video frame extension header information thereof, and the second video frame extension header information thereof to the video monitoring platform;
and the video monitoring platform sequences the base layer and the enhancement layer of the monitoring picture video based on the first video frame extension header information and the second video frame extension header information.
8. The negotiation transmission method of claim 7,
the video monitoring platform sequences the base layer and the enhancement layer of the monitoring picture video based on the first video frame extension header information and the second video frame extension header information, and comprises the following steps:
and the video monitoring platform puts the first video frame and the second video frame with the same video frame serial number into a buffer queue, and sorts the first video frame and the second video frame according to the level serial number to form a target video frame.
9. The negotiation transmission method of claim 1,
the negotiation transmission method further comprises:
under the condition that both a first residual bandwidth and a second residual bandwidth of the second device are smaller than the first target bandwidth, the first device reduces the transmission level of a monitoring picture in the monitoring picture video to generate second target bandwidth information;
the first device sends the processed monitoring picture video to a target second device of which the first surplus bandwidth or the second surplus bandwidth is larger than a second target bandwidth;
and the target second equipment forwards the processed monitoring picture video to the video monitoring platform through the base station.
10. The negotiation transmission method of claim 1,
and the first device and the second device carry out data transmission by using a D2D technology.
11. An electronic device comprising a memory and a processor coupled to each other, the processor being configured to execute program instructions stored in the memory to implement the negotiation transmission method of any one of claims 1 to 10.
12. A computer readable storage medium having stored thereon program instructions, which when executed by a processor implement the negotiation transmission method of any one of claims 1 to 10.
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