CN114697610A - Video transmission method and electronic equipment - Google Patents
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- 238000005516 engineering process Methods 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/177—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a group of pictures [GOP]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a video transmission method and electronic equipment, wherein the method comprises the following steps: when a new video packet is detected, acquiring a current video packet transmission interval; if the current time does not fall in the current video packet transmission interval, determining the corresponding sending time of the new video packet; and when the sending time corresponding to the new video packet is reached, transmitting the new video packet to a target end through a wireless network, so that the phenomenon that the number of the video packets transmitted through the wireless network is too large at the same time is avoided, the pressure of an air interface bandwidth is reduced, the video packets can be normally transmitted, and the success rate of video packet transmission is further improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of Internet of things, in particular to a video transmission method and electronic equipment.
Background
The video is based on the principle of human visual persistence, and makes human eyes generate motion feeling by playing a series of pictures. The transmission efficiency of the video is affected by the very large amount of the video when the video picture is transmitted. Therefore, in order to improve the video transmission efficiency, an encoder is often used to compress the original image data inside the video to obtain corresponding video packets, i.e. groups of Pictures (GOPs). The video packet is a set of continuous pictures, which is composed of an I frame (I frame) image and a plurality of b (b frame) frame/p (p frame) frame images, and then the obtained video packet is transmitted to the target end through a wireless network.
However, when the obtained video packets are transmitted to the target end through the wireless network, if there are multiple video packets to be transmitted in a single cell, since the air interface bandwidth of the wireless network is limited, when the multiple video packets are transmitted to the target end at the same time, the required air interface bandwidth is very large, and thus, a large pressure may be applied to the air interface bandwidth, which may cause that the video packets cannot be normally transmitted, and further, the success rate of video packet transmission is low.
Disclosure of Invention
The embodiment of the invention provides a video transmission method and electronic equipment, which are used for improving the success rate of video packet transmission.
In a first aspect, an embodiment of the present invention provides a video transmission method, including:
when a new video packet is detected, acquiring a current video packet transmission interval;
if the current time does not fall in the current video packet transmission interval, determining the corresponding sending time of the new video packet;
and when the sending time corresponding to the new video packet is reached, transmitting the new video packet to a target end through a wireless network.
In one possible design, the method further includes:
if the current time is within the current video packet transmission interval, taking the new video packet as a video packet to be transmitted corresponding to the current video packet transmission interval;
and when the sending time corresponding to the current video packet transmission interval is reached, sending all the video packets to be transmitted corresponding to the current video packet transmission interval to a target end through a wireless network.
In one possible design, the determining a sending time corresponding to the new video packet includes:
acquiring the number of video frames in the new video packet, and determining the transmission offset number of the new video frames according to the number of the video frames;
acquiring a video packet transmission period and video frame interval time;
and determining the corresponding sending time of the new video packet according to the new video frame transmission offset number, the video packet transmission period and the video frame interval time.
In one possible design, the determining a new number of video frame transmission offsets based on the number of video frames includes:
acquiring latest network access information, and determining the transmission offset number of the new video frame according to the latest network access information and the number of the video frames; or, generating a random number and determining it as the new video frame transmission offset number, wherein the new video frame transmission offset number is smaller than the number of video frames.
In one possible design, the new video package includes the target video frame and other video frames;
the method further comprises the following steps:
acquiring the transmission offset number of the current video frame and the interval time of the video frame;
acquiring the product of the current video frame transmission offset number and the video frame interval time, and determining the product as the transmission offset duration;
acquiring a difference value between the transmission offset time length and a preset interval time length, and determining the difference value as the starting time of the current video packet transmission interval;
and acquiring the sum of the transmission offset time length and a preset interval time length, and determining the sum as the deadline of the current video packet transmission interval.
In one possible design, the method further includes:
acquiring a video packet transmission period, and performing remainder processing on the current time and the video packet transmission period to obtain video transmission time;
if the video transmission time is in the current video packet transmission interval, determining that the current time is in the current video packet transmission interval;
and if the video transmission time does not fall within the current video packet transmission interval, determining that the current time does not fall within the current video packet transmission interval.
In one possible design, the method further includes:
and when the first video packet is detected, determining the corresponding sending time of the first video packet.
In a second aspect, an embodiment of the present invention provides a video transmission device, including:
the receiving and sending module is used for acquiring a current video packet transmission interval when a new video packet is detected;
the processing module is used for determining the sending time corresponding to the new video packet if the current time does not fall in the current video packet transmission interval;
and the transceiver module is further used for transmitting the new video packet to a target end through a wireless network when the sending time corresponding to the new video packet is reached.
In a possible design, the processing module is further configured to, if the current time falls within the current video packet transmission interval, use the new video packet as a to-be-transmitted video packet corresponding to the current video packet transmission interval;
and the transceiver module is further used for sending all the video packets to be transmitted corresponding to the current video packet transmission interval to a target end through a wireless network when the sending time corresponding to the current video packet transmission interval is reached.
In one possible design, the processing module is further to:
acquiring the number of video frames in the new video packet, and determining the transmission offset number of the new video frames according to the number of the video frames;
acquiring a video packet transmission period and video frame interval time;
and determining the corresponding sending time of the new video packet according to the new video frame transmission offset number, the video packet transmission period and the video frame interval time.
In one possible design, the processing module is further to:
acquiring latest network access information, and determining the transmission offset number of the new video frame according to the latest network access information and the number of the video frames; or, generating a random number and determining it as the new video frame transmission offset number, wherein the new video frame transmission offset number is smaller than the number of video frames.
In one possible design, the new video package includes the target video frame and other video frames;
the transceiver module is further configured to:
acquiring the transmission offset number of the current video frame and the interval time of the video frame;
acquiring the product of the current video frame transmission offset number and the video frame interval time, and determining the product as the transmission offset duration;
acquiring a difference value between the transmission offset time length and a preset interval time length, and determining the difference value as the starting time of the current video packet transmission interval;
and acquiring the sum of the transmission offset time length and a preset interval time length, and determining the sum as the deadline of the current video packet transmission interval.
In one possible design, the processing module is further to:
acquiring a video packet transmission period, and performing remainder processing on the current time and the video packet transmission period to obtain video transmission time;
if the video transmission time is in the current video packet transmission interval, determining that the current time is in the current video packet transmission interval;
and if the video transmission time does not fall in the current video packet transmission interval, determining that the current time does not fall in the current video packet transmission interval.
In one possible design, the transceiver module is further configured to:
and when the first video packet is detected, determining the corresponding sending time of the first video packet.
In a third aspect, an embodiment of the present invention provides an electronic device, including: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the video transmission method as set forth in the first aspect above and in various possible designs of the first aspect.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, where computer-executable instructions are stored, and when a processor executes the computer-executable instructions, the video transmission method according to the first aspect and various possible designs of the first aspect are implemented.
In a fifth aspect, an embodiment of the present invention provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the computer program implements the video transmission method according to the first aspect and various possible designs of the first aspect.
The invention provides a video transmission method and electronic equipment, which indicate that a new video packet needs to be transmitted to a target end when the new video packet is detected, therefore, whether a plurality of video packets are transmitted simultaneously when the new video packet is transmitted needs to be determined, whether the current time falls in the current video packet transmission interval is determined, if the current time does not fall in the current video packet transmission interval, the number of the video packets to be transmitted corresponding to the current video packet transmission interval is already excessive, if the new video packet is transmitted together with the video packets to be transmitted corresponding to the current video packet transmission interval, pressure is caused to the air interface bandwidth, the video packets can not be normally transmitted, therefore, the wrong peak transmission needs to be carried out, the transmission time corresponding to the new video packet is determined, so that the new video packet is transmitted to the target end through a wireless network when the transmission time is reached, instead of transmitting the video packets to be transmitted corresponding to the current video packet transmission interval, the new video packets are transmitted together, so that the excessive number of the video packets transmitted simultaneously through the wireless network can be avoided, the pressure of the air interface bandwidth is reduced, the video packets can be normally transmitted, and the success rate of video packet transmission is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a scene of a video transmission method according to an embodiment of the present invention;
fig. 2 is a first flowchart illustrating a video transmission method according to an embodiment of the present invention;
fig. 3 is a second flowchart illustrating a video transmission method according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a video transmission device according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the prior art, in order to improve the transmission efficiency of a video, a camera often uses an encoder to compress original image data inside the video to obtain a corresponding video packet, i.e., a GOP video packet, which is a group of continuous pictures and consists of an I-frame image and a plurality of B-frame/P-frame images, and then transmits the obtained video packet to a target end through a wireless network. However, when transmitting the obtained video packets to the target end through the wireless network, if there are multiple video packets to be transmitted in a single cell, since the air interface bandwidth of the wireless network in the single cell is limited, when transmitting the multiple video packets to the target end at the same time, for example, when monitoring a background video, if the I frames in the multiple video packets collide together, the instantaneous bandwidth requirement will be very high, and the required instantaneous rate requirement will be 2-10 times higher than that in the non-collision, so that a large pressure is applied to the air interface bandwidth, which may cause the video packets, i.e., the I frames cannot be transmitted normally, the success rate of video packet transmission is low, and abnormal situations such as video screen splash, blocking and the like will occur because the target end cannot receive the video packets, and user experience is low.
The I frame, also called intra-frame coded frame, is an independent frame with all information, and can be independently decoded without referring to other images, and can be simply understood as a static picture. The first video frame in a video packet is an I-frame because it is a key frame.
The P frame, also called inter-frame predictive coding frame, needs to refer to the previous I frame for coding. The difference between the current frame picture and the previous frame (which may be an I frame or a P frame) is shown. When decoding, the difference defined by the frame is superimposed on the picture buffered before, and the final picture is generated. P-frames generally occupy fewer data bits than I-frames, but are very sensitive to transmission errors due to their complex dependencies on previous P-frames and I-reference frames.
The B frame is also called bidirectional predictive coding frame, and the difference between the current frame and the previous and subsequent frames is recorded in the B frame. That is, when decoding a B frame, not only the previous buffer picture but also the decoded picture are acquired, and the final picture is acquired by superimposing the previous and subsequent pictures on the data of the current frame. The B frame compression rate is high, but the decoding performance is required to be high.
Therefore, aiming at the problems, the technical idea of the invention is that the edge aggregation terminal performs peak staggering transmission on GOP video packets when receiving the GOP video packets, avoids simultaneously transmitting a plurality of GOP video packets, namely avoids excessive quantity of GOP video packets transmitted through a wireless network simultaneously, reduces the pressure of air interface bandwidth, enables the video packets to be normally transmitted to a target end, further improves the success rate of video packet transmission, and the target end can also successfully receive the video packets, can normally display corresponding video pictures when decoding the video packets, does not generate abnormal situations such as video screen splash, video blockage and the like, and has low user experience.
The following describes the technical solutions of the present disclosure and how to solve the above technical problems in detail by specific examples. Several of these specific examples may be combined with each other below, and some of the same or similar concepts or processes may not be repeated in some examples. Examples of the present disclosure will now be described with reference to the accompanying drawings.
Fig. 1 is a scene application diagram of a video transmission method according to an embodiment of the present invention, as shown in fig. 1, after a camera acquires a monitoring video, the monitoring video is encoded and compressed to obtain a GOP video packet and is sent to an edge aggregation terminal, the edge aggregation terminal sends the GOP video packet to a base station of a single cell where the edge aggregation terminal is located through a wireless network, so that the base station sends the GOP video packet to a video monitoring background, i.e., a target, through a core network, and the target decodes the GOP video packet to obtain a corresponding monitoring video and displays the corresponding monitoring video.
Optionally, the wireless network includes a 4G (fourth generation mobile communication technology) network and/or a 5G (fifth generation mobile communication technology) network.
Optionally, the edge convergence terminal is an electronic device such as a computer, a server, and a mobile terminal.
Optionally, the camera is a network camera, that is, a camera capable of transmitting through a network. The number of the cameras is at least one, that is, the edge convergence terminal can communicate with at least one camera to receive the GOP video packets sent by each camera.
Optionally, the number of the edge convergence terminals is at least one, that is, the base station may perform communication for at least one edge convergence terminal to receive the GOP video packets sent by each edge convergence terminal.
Fig. 2 is a first flowchart of a video transmission method according to an embodiment of the present invention, where an execution main body of the embodiment may be the edge convergence terminal in fig. 1. As shown in fig. 2, the method includes:
s201, when a new video packet is detected, acquiring a current video packet transmission interval.
In this embodiment, when a video packet sent by a camera is received, that is, when a new video packet is detected, it indicates that the new video packet needs to be transmitted to a target end through a network, a current video packet transmission interval is obtained, that is, a video packet transmission interval corresponding to a previous video packet is obtained, so as to determine whether the number of video packets to be transmitted corresponding to the current video packet transmission interval in the video packet transmission interval is too large, that is, whether the new video packet can be sent together with the video packet to be transmitted corresponding to the current video packet transmission interval is determined, where the video packet to be transmitted corresponding to the current video packet transmission interval includes the previous video packet.
The last video packet is a new video packet detected before the new video packet is detected, that is, the last received video packet.
In the present embodiment, the video packet includes the target video frame and other video frames. Wherein the target video frame is an I-frame and the other video frames include B-frames and/or P-frames. For example, the video packet is IPPB, i.e., the video packet includes one I frame, 2P frames, and 1B frame.
S202, if the current time does not fall in the transmission interval of the current video packet, determining the corresponding sending time of the new video packet.
In this embodiment, when it is determined that the current time does not fall within the current video packet transmission interval, it indicates that the number of video packets to be transmitted corresponding to the current video packet transmission interval is large, and if the new video packet is still transmitted together with the video packet to be transmitted corresponding to the current video packet transmission interval, pressure may be applied to the air interface bandwidth, which may cause that an I frame cannot be normally transmitted, and therefore, peak shifting transmission needs to be performed, the transmission time corresponding to the new video packet is determined so as to perform staggered transmission by using the transmission time, and the new video packet is not transmitted together with the video packet to be transmitted corresponding to the current video packet transmission interval, that is, the new video packet is not transmitted simultaneously with the previously received video packet, so that peak shifting transmission is implemented.
The current time is the time when a new video packet is received, that is, the time when the new video packet is detected. The representation form of the current time may be set according to actual conditions, for example, the time when the video packet is received for the first time is set to 0, and when a new video packet is received, the time that has elapsed since the video packet is received for the first time is taken as the current time, for example, when 10 milliseconds occur, a new video packet is received, and 10 milliseconds are taken as the current time of the new video packet.
And S203, when the sending time corresponding to the new video packet is reached, transmitting the new video packet to the target end through the wireless network.
In this embodiment, after the sending time corresponding to the detected new video packet is determined, when the sending time corresponding to the new video packet is reached, it indicates that the new video packet can be transmitted, and the new video packet is sent to the target end through the wireless network, so as to implement peak-to-peak sending.
In this embodiment, the camera first sends the video packet to the electronic device, and in order to avoid sending a plurality of video packets at the same time or in a short time, after receiving the video packet, the electronic device does not directly send the video packet to the target end through the wireless network, but first determines whether the number of the video packets sent at the same time or in a short time is too large, and when the number of the video packets is too large, peak shifting transmission is performed.
As can be seen from the above description, when a new video packet is detected, it indicates that the new video packet needs to be transmitted to a target end, and therefore, it needs to determine whether a plurality of video packets are transmitted simultaneously when the new video packet is transmitted, it determines whether the current time falls within the current video packet transmission interval, and when it is determined that the current time does not fall within the current video packet transmission interval, it indicates that the number of video packets to be transmitted corresponding to the current video packet transmission interval is too large, and if the new video packet is still transmitted together with the video packet to be transmitted corresponding to the current video packet transmission interval, it may cause pressure on the air interface bandwidth, which may cause the video packets to be transmitted abnormally, and therefore, it needs to perform peak-to-peak transmission, it determines the transmission time corresponding to the new video packet, so that when the transmission time arrives, the new video packet is transmitted to the target end through a wireless network, instead of transmitting the video packets to be transmitted corresponding to the current video packet transmission interval, the new video packets are transmitted together, so that the excessive number of the video packets transmitted simultaneously through the wireless network can be avoided, the pressure of the air interface bandwidth is reduced, the video packets can be normally transmitted, and the success rate of video packet transmission is improved.
Fig. 3 is a schematic flow diagram of a video transmission method according to an embodiment of the present invention, in this embodiment, on the basis of the embodiment of fig. 2, when it is determined that the current time falls within the current video packet transmission interval, it indicates that a new video packet can be sent together with a video packet to be transmitted corresponding to the current video packet transmission interval, and then the new video packet can be sent together with a video packet to be transmitted corresponding to the current video packet transmission interval, and this process will be described below with reference to a specific embodiment. As shown in fig. 3, the method includes:
s301, when a new video packet is detected, acquiring a current video packet transmission interval.
In this embodiment, before obtaining the current video packet transmission interval, it is necessary to determine the current video packet transmission interval, and the specific process includes: and acquiring the transmission offset number of the current video frame and the interval time of the video frame. And acquiring the product of the current video frame transmission offset number and the video frame interval time, and determining the product as the transmission offset duration. And acquiring a difference value between the transmission offset time length and the preset interval time length, and determining the difference value as the starting time of the current video packet transmission interval. And acquiring the sum of the transmission offset duration and the preset interval duration, and determining the sum as the deadline of the current video packet transmission interval.
Specifically, the current video frame transmission offset number is obtained, that is, the latest video frame transmission offset number is searched, and a video frame interval time is obtained, where the video frame interval time is an interval time between video frames included in a video packet, for example, the format of the video packet is IPPB, that is, a first video frame in the video packet is an I frame, a second video frame is a P frame, a third video frame is a P frame, a fourth video frame is a B frame, and the video frame interval time is an interval time between any two adjacent video frames in the video packet, for example, an interval time between an I frame and a P frame.
Calculating the product of the current video frame transmission offset number and the video frame interval, determining the product as the transmission offset time length, calculating the difference value between the transmission offset time length and the preset interval time length, determining the difference value as the starting time of the current video packet transmission interval, calculating the sum of the transmission offset time length and the preset interval time length, and determining the sum as the ending time of the current video packet transmission interval.
Optionally, the preset interval duration is N video frame intervals, N is configured by the edge convergence gateway, and a value range (1-10) is, for example, N is 2.
Specifically, the video frame transmission offset number is an I frame transmission offset.
In addition, optionally, after a new video packet is detected, the new video packet is saved in the cache. And when the number of the video packets in the cache is larger than the preset number, immediately transmitting the video packets in the cache to the target end until the number of the video packets in the cache is smaller than or equal to the preset number.
S302, if the current time does not fall in the transmission interval of the current video packet, determining the corresponding sending time of the new video packet.
In this embodiment, after determining the current video packet transmission interval, it is determined whether the current time falls within the current video packet transmission interval, so as to determine whether a new video packet can be sent together with a video packet to be transmitted corresponding to the current video packet transmission interval.
Optionally, when judging whether the current time falls within the current video packet transmission interval, obtaining a video packet transmission period, and performing remainder processing on the current time and the video packet transmission period to obtain the video transmission time. And if the video transmission time is within the current video packet transmission interval, determining that the current time is within the current video packet transmission interval. And if the video transmission time does not fall in the current video packet transmission interval, determining that the current time does not fall in the current video packet transmission interval.
Specifically, the video transmission time is calculated according to T-MOD GOP cycle, where T is the video transmission time, T is the current time, MOD is a remainder function, and GOP cycle is a video packet transmission cycle. When the video transmission time is greater than or equal to the starting time of the current video packet transmission interval and the video transmission time is less than or equal to the ending time of the current video packet transmission interval, determining that the video transmission time falls in the current video packet transmission interval, namely determining that the current time falls in the current video packet transmission interval. And when the video transmission time is smaller than the starting time of the current video packet transmission interval or the video transmission time is larger than the ending time of the current video packet transmission interval, determining that the video transmission time does not fall in the current video packet transmission interval, namely determining that the current time does not fall in the current video packet transmission interval.
Specifically, when the I-frame transmission offset is equal to or less than the T MOD GOP period and equal to or less than the T MOD GOP period, the current time is within the current video packet transmission interval, that is, within the current I-frame transmission interval, or else, the current time is determined not to be within the current video packet transmission interval, that is, not to be within the current I-frame transmission interval.
The video packet transmission period, i.e., GOP period, represents the interval time from an I frame to the next I frame, where the GOP period is the number of video frames in a GOP video packet (i.e., the number of video frames in a video packet) per video frame interval, and the unit is millisecond.
In this embodiment, when it is determined that the current time does not fall within the current video packet transmission interval, it indicates that the detected new video packet cannot be transmitted together with the previously detected video packet, that is, the to-be-transmitted video packet corresponding to the current video packet transmission interval, and needs to be transmitted in a staggered manner, and therefore, it is necessary to determine the transmission time corresponding to the new video packet, that is, to determine the transmission time of a new I frame.
Optionally, determining the sending time corresponding to the new video packet includes:
and acquiring the number of video frames in the new video packet, and determining the number of the new video frame transmission offsets according to the number of the video frames. And acquiring a video packet transmission period and a video frame interval time. And determining the corresponding sending time of the new video packet according to the transmission offset number of the new video frame, the transmission period of the video packet and the interval time of the video frame.
In this embodiment, when the current time does not fall within the current video packet transmission interval, which indicates that the detected new video packet needs to be sent in a staggered manner, the I-frame transmission offset is recalculated according to the number of video frames in the new video packet, that is, the number of new video frame transmission offsets is determined, so that the new video frame transmission offset number is used to determine the sending time corresponding to the new video packet.
Specifically, when the remainder of the time closest to the current time and the video packet transmission period is the product of the transmission offset number of the new video frame and the video frame interval time, it is determined that the closest time is the transmission time corresponding to the new video packet, i.e., TsentMOD GOP period-New I frame Transmission offset-video frame Interval time, where TsentThe corresponding sending time of the new video packet.
In addition, optionally, after obtaining a new video frame transmission offset number, the current video frame transmission offset number is updated to the new video frame transmission offset number, and the updated current video frame transmission offset number is the latest video frame transmission offset number.
The number of video frames in the new video packet is the number of video frames included in the new video packet, for example, if the new video packet is IPPB, the number of video frames in the new video packet is 4.
In addition, optionally, after obtaining a new video frame transmission offset number, determining a new video packet transmission interval according to the new video frame transmission offset number, and taking the new video packet as a video packet to be transmitted corresponding to the new video packet transmission interval, where the new video packet is a first video packet to be transmitted corresponding to the new video packet transmission interval. And the sending time corresponding to the new video packet transmission interval is not the sending time corresponding to the new video packet.
The process of determining the new video packet transmission interval according to the new video frame transmission offset number is similar to the process of determining the current video packet transmission interval, and is not repeated here.
Further, optionally, after obtaining a new video packet transmission interval, updating the current video packet transmission interval to the new video packet transmission interval, that is, the updated current video packet transmission interval is the new video packet transmission interval. Correspondingly, after the video packet is received again, the current time is obtained, and it is determined whether the current time falls within the updated current video packet transmission interval, that is, the new video packet transmission interval, so as to determine whether the video packet received again can be transmitted together with the new video packet, that is, if yes, it is determined that the video packet received again can be transmitted together with the new video packet, and if not, it is determined that the video packet received again cannot be transmitted together with the new video packet, and it is necessary to re-determine the transmission time corresponding to the video packet received again.
Further, alternatively, when determining the number of new video frame transmission offsets according to the number of video frames, the determination may be performed in the following two ways.
One way is as follows: and acquiring the latest network access information, and determining the number of new video frame transmission offsets according to the latest network access information and the number of the video frames.
The latest network access information includes one or more of a C-RNTI (Cell-radio network temporary identifier), a TMSI (International Mobile Subscriber Identity), a pf (paging frame), and a po (paging interference) value.
Optionally, the electronic device includes a wireless network communication module therein, and the base station allocates the C-RNTI value to the wireless network communication module each time the electronic device accesses the network, so that the latest I-frame transmission offset can be determined according to the C-RNTI value allocated during the latest network access, that is, the number of the new video frame transmission offsets is determined according to the current C-RNTI value, which specifically is: and performing complementation processing on the current C-RNTI value and the number of video frames in the video packet to obtain the new video frame transmission offset number, namely the I frame transmission offset is the number of video frames in the C-RNTI MOD GOP.
Specifically, the wireless network communication module comprises a 4G communication module and/or a 5G communication module. The edge convergence terminal is internally provided with a 4G communication module and/or a 5G communication module, the 4G and/or 5G base station allocates C-RNTI to the 4G communication module and/or the 5G communication module when the edge convergence terminal accesses the network every time, and the edge convergence terminal needs to acquire the C-RNTI value when the edge convergence terminal accesses the network every time.
Optionally, the electronic device includes a wireless network communication module therein, and each time the electronic device accesses the network, the base station allocates the TMSI value to the wireless network communication module, so that the latest I-frame transmission offset can be determined according to the TMSI value allocated in the latest network access, that is, the number of new video frame transmission offsets is determined according to the current TMSI value, which specifically is: and performing complementation processing on the current TMSI value and the number of the video frames in the video packet to obtain a new video frame transmission offset number, namely the I frame transmission offset is equal to the number of the video frames in the TMSI MOD GOP.
Specifically, the wireless network communication module comprises a 4G communication module and/or a 5G communication module. The electronic equipment, namely the edge convergence terminal is internally provided with a 4G communication module and/or a 5G communication module, when the network is accessed every time, the 4G and/or 5G base station allocates TMSI to the 4G communication module and/or the 5G communication module, and the edge convergence terminal needs to acquire a TMSI value when the network is accessed every time.
Optionally, when the electronic device accesses the network each time, acquiring a paging time of the wireless network communication module, where the paging time includes a paging radio frame number PF and a paging subframe number PO, and therefore, determining a latest I-frame transmission offset according to a PF value and a PO value acquired when the electronic device accesses the network last time, that is, determining a new video frame transmission offset number according to a current PF value and a PO value, specifically: the new video frame transmission offset number is the number of video frames in the (PF 10+ PO) MOD GOP video packet.
Specifically, the wireless network communication module comprises a 4G communication module and/or a 5G communication module. The edge convergence terminal is internally provided with a 4G communication module and/or a 5G communication module, and the edge convergence terminal acquires a PF value and a PO value every time the edge convergence terminal accesses the network.
The other mode is as follows: a random number is generated and determined as a new video frame transmission offset number, where the new video frame transmission offset number is smaller than the number of video frames, i.e., I-frame transmission offset (i.e., video frame transmission offset number) ═ random (0, the number of video frames in the GOP video packet).
In addition, optionally, when the first video packet is detected, the sending time corresponding to the first video packet is directly determined.
And S303, when the sending time corresponding to the new video packet is reached, transmitting the new video packet to the target end through the wireless network.
And S304, if the current time is within the current video package transmission interval, taking the new video package as the video package to be transmitted corresponding to the current video package transmission interval.
S305, when the sending time corresponding to the current video package transmission interval is reached, sending all the video packages to be transmitted corresponding to the current video package transmission interval to a target end through a wireless network.
In this embodiment, when it is determined that the current time falls within the current video packet transmission interval, it indicates that the number of video packets to be transmitted corresponding to the current video packet transmission interval is still small, and the detected new video packet may be sent together with the previously detected video packet, that is, the video packet to be transmitted corresponding to the current video packet transmission interval, and then the new video packet is also used as the video packet to be transmitted corresponding to the current video packet transmission interval.
In this embodiment, when the sending time corresponding to the current video packet transmission interval is reached, it is indicated that all to-be-transmitted video packets corresponding to the current video packet transmission interval need to be transmitted, and all to-be-transmitted video packets are sent to the target end through the wireless network.
The sending time corresponding to the current video package transmission interval is the sending time corresponding to the first to-be-transmitted video package in the to-be-transmitted video packages corresponding to the current video package transmission interval.
Specifically, when the new video package is also used as a to-be-transmitted video package corresponding to the current video package transmission interval, the new video package is arranged behind all to-be-transmitted video packages corresponding to the current video package transmission interval. That is, the video packets to be transmitted corresponding to the video packet transmission interval are arranged according to the received sequence, and the video packets to be transmitted which are received first are arranged in front.
Correspondingly, when all the video packages to be transmitted corresponding to the current video package transmission interval are sent to the target end, the video packages to be transmitted are sent in sequence according to the arrangement sequence of all the video packages to be transmitted.
Taking a specific application scenario as an example, when the electronic device receives a video packet 1 for the first time, and the video packet 1 is the first video packet, the sending time corresponding to the video packet 1 and the current video packet transmission interval are determined, where the video packet 1 is the first video packet to be transmitted in the current video packet transmission interval, that is, the sending time corresponding to the video packet 1 is determined as the sending time corresponding to the current video packet transmission interval. When the electronic device receives a new video package again, that is, receives the video package 2, the time when the video package 2 is received, that is, the current time is obtained, and the current time falls in the current video package transmission interval, the video package 2 is used as a second video package to be transmitted in the video package transmission interval. When the electronic device receives a new video packet again, that is, receives the video packet 3, the time when the video packet 3 is received, that is, the current time is obtained, and the current time does not fall within the current video packet transmission interval, the sending time corresponding to the video packet 3 is restarted. And when the sending time corresponding to the current video packet transmission interval is reached, sequentially transmitting the first video packet to be transmitted and the second video packet to be transmitted in the current video packet transmission interval to a target end.
In this embodiment, after receiving a new video packet, it is determined whether the current time falls within a current video packet transmission interval to determine whether the new video packet can be transmitted together with a video packet to be transmitted corresponding to the current video packet transmission interval, and when determining that the current time falls within the current video packet transmission interval, it indicates that the number of the video packets to be transmitted corresponding to the current video packet transmission interval is small, so that the new video packet can be transmitted together when the video packet to be transmitted is transmitted to a target, thereby implementing fast transmission of the video packet and improving transmission efficiency of the video packet.
Fig. 4 is a schematic structural diagram of a video transmission apparatus according to an embodiment of the present invention, and as shown in fig. 4, the video transmission apparatus 400 includes: a transceiver module 401 and a processing module 402.
The transceiver module 401 is configured to acquire a current video packet transmission interval when a new video packet is detected.
A processing module 402, configured to determine a sending time corresponding to a new video packet if the current time does not fall within the current video packet transmission interval.
The transceiver module 401 is further configured to transmit the new video packet to the destination end through the wireless network when the sending time corresponding to the new video packet is reached.
In a possible design, the processing module 402 is further configured to, if the current time falls within the current video packet transmission interval, use the new video packet as the to-be-transmitted video packet corresponding to the current video packet transmission interval.
The transceiver module 401 is further configured to send all to-be-transmitted video packets corresponding to the current video packet transmission interval to the target end through the wireless network when the sending time corresponding to the current video packet transmission interval is reached.
In one possible design, the processing module 402 is further configured to:
and acquiring the number of video frames in the new video packet, and determining the number of the new video frame transmission offsets according to the number of the video frames.
And acquiring a video packet transmission period and a video frame interval time.
And determining the corresponding sending time of the new video packet according to the transmission offset number of the new video frame, the transmission period of the video packet and the interval time of the video frame.
In one possible design, the processing module 402 is further configured to:
and acquiring the latest network access information, and determining the number of new video frame transmission offsets according to the latest network access information and the number of the video frames. Alternatively, a random number is generated and determined as a new video frame transmission offset number, wherein the new video frame transmission offset number is less than the number of video frames.
In one possible design, the new video package includes the target video frame and other video frames.
The transceiver module 401 is further configured to:
and acquiring the transmission offset number of the current video frame and the interval time of the video frame.
And acquiring the product of the current video frame transmission offset number and the video frame interval time, and determining the product as the transmission offset duration.
And acquiring a difference value between the transmission offset time length and the preset interval time length, and determining the difference value as the starting time of the current video packet transmission interval.
And acquiring the sum of the transmission offset duration and the preset interval duration, and determining the sum as the deadline of the current video packet transmission interval.
In one possible design, the processing module 402 is further configured to:
and acquiring a video packet transmission period, and performing remainder processing on the current time and the video packet transmission period to obtain video transmission time.
And if the video transmission time is within the current video packet transmission interval, determining that the current time is within the current video packet transmission interval.
And if the video transmission time does not fall in the current video packet transmission interval, determining that the current time does not fall in the current video packet transmission interval.
In one possible design, the transceiver module 401 is further configured to:
and when the first video packet is detected, determining the corresponding sending time of the first video packet.
The video transmission device provided by the embodiment of the present invention can implement the video transmission method of the above-mentioned embodiment, and the implementation principle and technical effect are similar, which are not described herein again.
Fig. 5 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present invention. As shown in fig. 5, the electronic device 500 of the present embodiment includes: a processor 501 and a memory 502; wherein
A memory 502 for storing computer-executable instructions;
the processor 501 is configured to execute computer-executable instructions stored in the memory to implement the steps performed by the receiving device in the above embodiments. Reference may be made in particular to the description relating to the method embodiments described above.
Alternatively, the memory 502 may be separate or integrated with the processor 501.
When the memory 502 is provided separately, the electronic device further comprises a bus 503 for connecting said memory 502 and the processor 501.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer executing instruction is stored in the computer-readable storage medium, and when a processor executes the computer executing instruction, the video transmission method as described above is implemented.
An embodiment of the present invention further provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the video transmission method as described above is implemented.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of modules may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, functional modules in the embodiments of the present invention may be integrated into one processing unit, or each module may exist alone physically, or two or more modules are integrated into one unit. The unit formed by the modules can be realized in a hardware form, and can also be realized in a form of hardware and a software functional unit.
The integrated module implemented in the form of a software functional module may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present application.
It should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present invention may be embodied directly in a hardware processor, or in a combination of the hardware and software modules within the processor.
The memory may comprise a high-speed RAM memory, and may further comprise a non-volatile storage NVM, such as at least one disk memory, and may also be a usb disk, a removable hard disk, a read-only memory, a magnetic or optical disk, etc.
The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.
The storage medium may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the storage medium may reside as discrete components in an electronic device or host device.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A video transmission method, comprising:
when a new video packet is detected, acquiring a current video packet transmission interval;
if the current time does not fall in the current video packet transmission interval, determining the corresponding sending time of the new video packet;
and when the sending time corresponding to the new video packet is reached, transmitting the new video packet to a target end through a wireless network.
2. The method of claim 1, further comprising:
if the current time is within the current video packet transmission interval, taking the new video packet as a video packet to be transmitted corresponding to the current video packet transmission interval;
and when the sending time corresponding to the current video packet transmission interval is reached, sending all the video packets to be transmitted corresponding to the current video packet transmission interval to a target end through a wireless network.
3. The method of claim 1, wherein the determining the transmission time corresponding to the new video packet comprises:
acquiring the number of video frames in the new video packet, and determining the transmission offset number of the new video frames according to the number of the video frames;
acquiring a video packet transmission period and video frame interval time;
and determining the corresponding sending time of the new video packet according to the new video frame transmission offset number, the video packet transmission period and the video frame interval time.
4. The method of claim 3, wherein determining a new number of video frame transmission offsets based on the number of video frames comprises:
acquiring latest network access information, and determining the transmission offset number of the new video frame according to the latest network access information and the number of the video frames;
or,
a random number is generated and determined as the new video frame transmission offset number, wherein the new video frame transmission offset number is less than the number of video frames.
5. The method of claim 1, wherein the new video packet comprises a target video frame and other video frames;
the method further comprises the following steps:
acquiring the transmission offset number of the current video frame and the interval time of the video frame;
acquiring the product of the current video frame transmission offset number and the video frame interval time, and determining the product as the transmission offset duration;
acquiring a difference value between the transmission offset time length and a preset interval time length, and determining the difference value as the starting time of the current video packet transmission interval;
and acquiring the sum of the transmission offset time length and a preset interval time length, and determining the sum as the deadline of the current video packet transmission interval.
6. The method of claim 1, further comprising:
acquiring a video packet transmission period, and performing remainder processing on the current time and the video packet transmission period to obtain video transmission time;
if the video transmission time falls in the current video packet transmission interval, determining that the current time falls in the current video packet transmission interval;
and if the video transmission time does not fall within the current video packet transmission interval, determining that the current time does not fall within the current video packet transmission interval.
7. The method of claim 1, further comprising:
and when the first video packet is detected, determining the corresponding sending time of the first video packet.
8. An electronic device, comprising: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the video transmission method of any of claims 1 to 7.
9. A computer-readable storage medium having stored thereon computer-executable instructions which, when executed by a processor, implement the video transmission method of any one of claims 1 to 7.
10. A computer program product comprising a computer program, characterized in that the computer program realizes the video transmission method of any of claims 1 to 7 when executed by a processor.
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