CN114697610B - Video transmission method and electronic equipment - Google Patents
Video transmission method and electronic equipment Download PDFInfo
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- CN114697610B CN114697610B CN202011627917.6A CN202011627917A CN114697610B CN 114697610 B CN114697610 B CN 114697610B CN 202011627917 A CN202011627917 A CN 202011627917A CN 114697610 B CN114697610 B CN 114697610B
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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 sending time corresponding to the new video packet; when the sending time corresponding to the new video packet is reached, the new video packet is transmitted to the target end through the wireless network, so that the excessive number of video packets transmitted through the wireless network at the same time 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 further improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of the Internet of things, in particular to a video transmission method and electronic equipment.
Background
The video is based on the principle of human eye persistence, and a series of pictures are played to make human eyes produce a sense of motion. The video picture is simply transmitted, the video quantity is very large, and the video transmission efficiency can be influenced. Therefore, in order to improve the transmission efficiency of video, an encoder is often used to compress the original image data inside the video, so as to obtain a corresponding video packet, i.e. a group of pictures (Group of Pictures, GOP). The video packet is a set of consecutive pictures, consisting of one I frame (I frame) image and several B (B frame) frames/P (P frame) frame images, and then the resulting video packet is transmitted to the destination via the wireless network.
However, when the obtained video packet is transmitted to the target end through the wireless network, if there are a plurality of video packets to be transmitted in a single cell, because the air interface bandwidth of the wireless network is limited, when the plurality of video packets are simultaneously transmitted to the target end, the required air interface bandwidth is very large, so that a great pressure is caused to the air interface bandwidth, the video packets may not be normally transmitted, and 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 sending time corresponding to 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 comprises:
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 the transmission time corresponding to the new video packet includes:
acquiring the number of video frames in the new video packet, and determining the new video frame transmission offset number according to the number of the video frames;
acquiring a video packet transmission period and video frame interval time;
and determining the sending time corresponding to 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 the latest network access information, and determining the new video frame transmission offset number according to the latest network access information and the video frame number; alternatively, a random number is generated and determined as the new number of video frame transmission offsets, wherein the new number of video frame transmission offsets is less than the number of video frames.
In one possible design, the new video packet includes a target video frame and other video frames;
the method further comprises the steps of:
acquiring the transmission offset number of the current video frames and the video frame interval time;
obtaining the product of the transmission offset number of the current video frame and the video frame interval time, and determining the product as the transmission offset duration;
acquiring a difference value between the transmission bias 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 obtaining the sum of the transmission bias time length and the preset interval time length, and determining the sum as the cut-off time of the current video packet transmission interval.
In one possible design, the method further comprises:
acquiring a video packet transmission period, and performing residual 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 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 method further comprises:
And when the first video packet is detected, determining the sending time corresponding to the first video packet.
In a second aspect, an embodiment of the present invention provides a video transmission apparatus, including:
the receiving and transmitting 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;
the receiving and transmitting module is further configured to transmit the new video packet to a target end through a wireless network when a transmission time corresponding to the new video packet is reached.
In one possible design, the processing module is further configured to use the new video packet as a video packet to be transmitted corresponding to the current video packet transmission interval if the current time falls within the current video packet transmission interval;
the receiving and transmitting module is further configured to send all 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 configured to:
Acquiring the number of video frames in the new video packet, and determining the new video frame transmission offset number according to the number of the video frames;
acquiring a video packet transmission period and video frame interval time;
and determining the sending time corresponding to 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 configured to:
acquiring the latest network access information, and determining the new video frame transmission offset number according to the latest network access information and the video frame number; alternatively, a random number is generated and determined as the new number of video frame transmission offsets, wherein the new number of video frame transmission offsets is less than the number of video frames.
In one possible design, the new video packet includes a target video frame and other video frames;
the transceiver module is further configured to:
acquiring the transmission offset number of the current video frames and the video frame interval time;
obtaining the product of the transmission offset number of the current video frame and the video frame interval time, and determining the product as the transmission offset duration;
acquiring a difference value between the transmission bias 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 obtaining the sum of the transmission bias time length and the preset interval time length, and determining the sum as the cut-off time of the current video packet transmission interval.
In one possible design, the processing module is further configured to:
acquiring a video packet transmission period, and performing residual 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 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 sending time corresponding to 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 executes computer-executable instructions stored in the memory, causing the at least one processor to perform the video transmission method as described above in the first aspect and the various possible designs of the first aspect.
In a fourth aspect, embodiments of the present invention provide a computer readable storage medium, where computer executable instructions are stored, when executed by a processor, to implement the video transmission method according to the first aspect and the various possible designs of the first aspect.
In a fifth aspect, embodiments of the present invention provide a computer program product comprising a computer program which, when executed by a processor, implements the video transmission method according to the first aspect and the various possible designs of the first aspect.
The invention provides a video transmission method and electronic equipment, which are characterized in that when a new video packet is detected, the new video packet needs to be transmitted to a target end, therefore, whether a plurality of video packets are transmitted simultaneously needs to be determined when the new video packet is transmitted, whether the current time falls in a current video packet transmission interval is determined, when the current time does not fall in the current video packet transmission interval is determined, the number of video packets to be transmitted corresponding to the current video transmission interval is excessive, if the new video packet is still transmitted together with the video packets to be transmitted corresponding to the current video packet transmission interval, the pressure is caused to the empty bandwidth, the video packets can not be normally transmitted, and therefore, the peak-staggering transmission is required, the transmission time corresponding to the new video packet is determined, when the transmission time is reached, the new video packet is transmitted to the target end through a wireless network, instead of transmitting the new video packet together when the video packets to be transmitted corresponding to the current video packet transmission interval is determined, and therefore, the number of video packets to be transmitted simultaneously through the wireless network can be avoided, the pressure of the video packets to be reduced, and the empty bandwidth can be increased.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.
Fig. 1 is a schematic view of a video transmission method according to an embodiment of the present invention;
fig. 2 is a flowchart of a video transmission method according to an embodiment of the present invention;
fig. 3 is a second flowchart of 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
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the prior art, in order to improve the transmission efficiency of video, a camera often compresses original image data inside the video by using an encoder to obtain a corresponding video packet, namely a GOP video packet, wherein the video packet is a group of continuous pictures, and is composed of an I frame image and a plurality of B frames/P frames, and then the obtained video packet is transmitted to a target end through a wireless network. However, when the obtained video packet is transmitted to the target end through the wireless network, if there are multiple video packets to be transmitted in a single cell, because the air interface bandwidth of the wireless network of the single cell is limited, when the multiple video packets are simultaneously transmitted to the target end, for example, in the video monitoring background, if the I frames in the multiple video packets collide together, the instantaneous bandwidth requirement is very high, and the required instantaneous rate requirement is 2-10 times higher than that in the non-collision, so that the air interface bandwidth is greatly stressed, thereby possibly causing abnormal transmission of the video packets, namely, the I frames, the success rate of video packet transmission is lower, and the target end has low user experience due to abnormal situations such as video screen display, blocking and the like, which can not receive the video packets.
The I frame is also called an intra-frame coding frame, is an independent frame with all information, can be independently decoded without referring to other images, and can be simply understood as a still picture. The first video frame in the video packet is an I-frame because it is a key frame.
Wherein, the P frame is also called inter-frame predictive coding frame, and the previous I frame needs to be referred to for coding. The difference between the current frame picture and the previous frame (the previous frame may be an I frame or a P frame). The difference defined by the present frame is overlapped by the previously buffered picture when decoding, and the final picture is generated. P frames typically occupy fewer data bits than I frames, but are very sensitive to transmission errors due to the complex dependency of P frames on previous P frames and I reference frames.
Wherein, B frame is also called as bi-directional predictive coding frame, and B frame records the difference between the frame and the front and back frames. That is, when decoding B frames, not only the previous buffered picture but also the picture after decoding is acquired, and the final picture is acquired by superimposing the previous and subsequent pictures with the present frame data. The B-frame compression rate is high, but the decoding performance is required to be high.
Therefore, in order to solve the above problems, the technical concept of the present invention is that when the edge convergence terminal receives the GOP video packet, it performs peak-staggering transmission on the GOP video packet, so as to avoid transmitting multiple GOP video packets simultaneously, that is, avoid transmitting the GOP video packet through the wireless network simultaneously, reduce the pressure of the air interface bandwidth, so that the video packet can be normally transmitted to the target end, further improve the success rate of video packet transmission, and the target end can also successfully receive the video packet, when decoding the video packet, it can normally display the corresponding video picture, and abnormal situations such as video screen, blocking, etc. will not occur, and the user experience is low.
The technical solutions of the present disclosure and how the technical solutions of the present disclosure solve the above technical problems are described in detail below with specific examples. The following specific examples may be combined with each other, and some examples may not be repeated for the same or similar concepts or processes. Examples of the present disclosure will be described below with reference to the accompanying drawings.
Fig. 1 is a view of a scenario application of a video transmission method provided in an embodiment of the present invention, as shown in fig. 1, after a camera acquires a monitoring video, the camera performs encoding compression on the monitoring video to obtain a GOP video packet, and sends the GOP video packet to an edge convergence terminal, and the edge convergence terminal sends the GOP video packet to a base station of a single cell where the edge convergence terminal is located through a wireless network, so that the base station sends the GOP video packet to a video monitoring background, that is, a target end, and the target end decodes the GOP video packet to obtain a corresponding monitoring video and displays the corresponding monitoring video.
Optionally, the wireless network includes a 4G (the 4th generation mobile communication technology, fourth generation mobile communication technology) network and/or a 5G (5 th generation mobile networks, fifth generation mobile communication technology) network.
Optionally, the edge aggregation terminal is an electronic device such as a computer, a server, a mobile terminal, and the like.
Optionally, the camera is a network camera, that is, a camera that can transmit through a network. The number of cameras is at least one, namely the edge convergence terminal can communicate with at least one camera so as to receive GOP video packets sent by each camera.
Optionally, the number of the edge aggregation terminals is at least one, that is, the base station may perform communication for at least one edge aggregation terminal, so as to receive GOP video packets sent by each edge aggregation terminal.
Fig. 2 is a schematic flow chart of a video transmission method according to an embodiment of the present invention, and an execution body of the embodiment may be the edge aggregation terminal in fig. 1. As shown in fig. 2, the method includes:
s201, when a new video packet is detected, a current video packet transmission interval is acquired.
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 acquired, that is, a video packet transmission interval corresponding to a previous video packet is acquired, so as to determine whether the number of video packets to be transmitted corresponding to the current video packet transmission interval by using the video packet transmission interval is excessive, 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, 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 this embodiment, the video packet includes a 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 current video packet transmission interval, determining the transmission time corresponding to the new video packet.
In this embodiment, when it is determined that the current time does not fall in 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 already large, if the new video packet is still transmitted together with the video packets to be transmitted corresponding to the current video packet transmission interval, the air interface bandwidth will be stressed, and the I frame may not be normally transmitted, so that peak staggering transmission is required, the transmission time corresponding to the new video packet is determined, so that the transmission time is used for staggered transmission, and the new video packet is not transmitted together with the video packets to be transmitted corresponding to the current video packet transmission interval, that is, the new video packet is not transmitted together with the video packets received before, thereby implementing peak staggering transmission.
The current time is the time when a new video packet is received, i.e. the time when a new video packet is detected. The representation of the current time may be set according to the actual situation, for example, the time when the video packet is first received is set to 0, when the new video packet is received, the time that has elapsed since the video packet was first received is taken as the current time, for example, when a new video packet is received at 10 ms, and then 10 ms is taken as the current time of the new video packet.
And S203, when the transmission 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 determining the transmission time corresponding to the detected new video packet, when the transmission time corresponding to the new video packet is reached, which indicates that the new video packet can be transmitted, the new video packet is sent to the target end through the wireless network, so as to implement peak staggering transmission.
In this embodiment, the camera sends the video packets to the electronic device first, so as to avoid sending multiple video packets simultaneously or in a short time, and after receiving the video packets, the electronic device does not send the video packets to the target end directly through the wireless network, but determines whether the number of video packets sent simultaneously or in a short time is too many, and when the number of video packets is too many, performs peak staggering transmission.
As is apparent from the above description, when a new video packet is detected, it is indicated that the new video packet needs to be transmitted to the target end, and therefore, it is required to determine whether a plurality of video packets are simultaneously transmitted when the new video packet is transmitted, and determine whether the current time falls in the current video packet transmission interval, and when it is determined that the current time does not fall in the current video packet transmission interval, it is indicated that the number of video packets to be transmitted corresponding to the current video transmission interval is too large, if the new video packet is still transmitted together with the video packets to be transmitted corresponding to the current video packet transmission interval, a pressure is caused to an air interface bandwidth, and the video packets may not be normally transmitted, so that a peak-staggering transmission is required, and when the transmission time is reached, the new video packet is transmitted to the target end through a wireless network, instead of transmitting the new video packet together when the video packets to be transmitted corresponding to the current video packet transmission interval is determined, thereby, the number of video packets to be simultaneously transmitted through the wireless network is prevented, the pressure of the air interface bandwidth is reduced, and the normal transmission of video packets may be further improved.
Fig. 3 is a schematic flow chart of a video transmission method according to an embodiment of the present invention, where, based on the embodiment of fig. 2, when it is determined that the current time falls within the current video packet transmission interval, it is indicated that a new video packet may be sent together with a video packet to be transmitted corresponding to the current video packet transmission interval, and then the new video packet may be sent together with the video packet to be transmitted corresponding to the current video packet transmission interval. 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 the current video packet transmission interval is acquired, the current video packet transmission interval needs to be determined, and the specific process includes: and acquiring the transmission offset number of the current video frames and the video frame interval time. The product of the number of transmission offsets of the current video frame and the video frame interval time is obtained and is determined as the transmission offset duration. And obtaining a difference value between the transmission bias 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 obtaining the sum of the transmission bias time length and the preset interval time length, and determining the sum as the cut-off time 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 the video frame interval time is obtained, where the video frame interval time is the interval time between video frames included in a video packet, for example, the format of the video packet is IPPB, that is, the first video frame in the video packet is an I frame, the second video frame is a P frame, the third video frame is a P frame, the fourth video frame is a B frame, and the video frame interval time is the interval time between any two adjacent video frames in the video packet, for example, the interval time between the I frame and the P frame.
Calculating the product of the transmission offset number of the current video frame and the video frame interval, determining the product as a 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 transmission interval of the current video packet, calculating the sum of the transmission offset time length and the preset interval time length, and determining the sum as the cut-off time of the transmission interval of the current video packet.
Optionally, the preset interval duration is N video frame intervals, N is configured by the edge aggregation gateway, and the value range (1-10) is, for example, N is 2.
Specifically, the number of video frame transmission offsets is I-frame transmission offset.
Additionally, optionally, after a new video packet is detected, the new video packet is saved to a 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 current video packet transmission interval, determining the transmission time corresponding to the new video packet.
In this embodiment, after determining the current video packet transmission interval, it is determined whether the current time falls in the current video packet transmission interval, so as to determine whether a new video packet may 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 in the current video packet transmission interval, acquiring a video packet transmission period, and performing residual processing on the current time and the video packet transmission period to obtain the 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. 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 a GOP period of t=t MOD, where T is the video transmission time, T is the current time, MOD is a residual function, and the GOP period is a video packet transmission period. When the video transmission time is greater than or equal to the start time of the current video packet transmission interval and the video transmission time is less than or equal to the deadline 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. 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 cut-off 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 video frame interval-N video frame intervals equal to or less than the T MOD GOP period and equal to or less than the I-frame transmission offset +n video frame intervals, it is indicated that the current time falls in the current video packet transmission interval, i.e., the current I-frame transmission interval, or else, it is determined that the current time does not fall in the current video packet transmission interval, i.e., the current I-frame transmission interval.
Wherein the video packet transmission period, i.e., GOP period, represents the interval time from an I-frame to the next I-frame, where GOP period = the number of video frames in a GOP video packet (i.e., the number of video frames in a video packet) the video frame interval in milliseconds.
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 video packet to be transmitted corresponding to the current video packet transmission interval, and the transmission needs to be staggered, so that the transmission time corresponding to the new video packet needs to be determined, that is, the transmission time of the new I frame needs to be determined.
Optionally, determining the transmission time corresponding to the new video packet includes:
the number of video frames in the new video packet is obtained, and the new video frame transmission offset number is determined according to the number of video frames. And acquiring a video packet transmission period and a video frame interval time. And determining the sending time corresponding to 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 this embodiment, when the current time does not fall in the current video packet transmission interval, it indicates that the detected new video packet needs to be transmitted in a staggered manner, and then the I-frame transmission offset is recalculated according to the number of video frames in the new video packet, that is, the new number of video frame transmission offsets is determined, so that the transmission time corresponding to the new video packet is determined by using the new number of video frame transmission offsets.
Specifically, when the remainder of the transmission period of the video packet and the time closest to the current time is the product of the new video frame transmission offset number and the video frame interval time, the latest time is determined to be the transmission time corresponding to the new video packet, i.e. T sent MOD GOP period = new I-frame transmission offset video frame interval time, where T sent The transmission time corresponding to the new video packet.
In addition, optionally, after obtaining the 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.
Wherein the number of video frames in the new video packet is the number of video frames included in the new video packet, for example, the number of video frames in the new video packet is 4 if the new video packet is IPPB.
In addition, optionally, after obtaining the 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 transmission time corresponding to the new video packet transmission interval is not the transmission 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 that of determining the current video packet transmission interval, and will not be described herein.
Further, optionally, after obtaining a new video packet transmission interval, the current video packet transmission interval is updated 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, acquiring the current time, and determining whether the current time falls in the updated current video packet transmission interval, namely the new video packet transmission interval, so as to determine whether the video packet received again can be sent together with the new video packet, if so, determining that the video packet received again can be sent together with the new video packet, and if not, determining that the video packet received again cannot be sent together with the new video packet, and determining that the sending time corresponding to the video packet received again needs to be determined again.
Further, alternatively, when determining the new number of video frame transmission offsets according to the number of video frames, the determination may be made in the following two ways.
One way is as follows: and acquiring the latest network access information, and determining the new video frame transmission offset number according to the latest network access information and the video frame number.
The latest network access information includes one or more of a Cell-radio network temporary identifier (C-RNTI) value, a Temporary Mobile Subscriber Identity (TMSI) value (International Mobile Subscriber Identity ) value, a PF (Paging Frame) value, and a PO (Paging Occasion) value.
Optionally, the electronic device includes a radio network communication module, and the base station allocates a C-RNTI value to the radio 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 when the electronic device accesses the network last time, that is, the new number of video frame transmission offsets is determined according to the current C-RNTI value, which specifically includes: and carrying out residual processing on the current C-RNTI value and the number of video frames in the video packet to obtain a new video frame transmission offset number, namely the number of video frames in the I frame transmission offset = C-RNTI MOD GOP.
Specifically, the wireless network communication module includes 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 when the edge convergence terminal is accessed to the network each time, the 4G base station and/or the 5G base station distributes a C-RNTI to the 4G communication module and/or the 5G communication module, and the edge convergence terminal needs to acquire the C-RNTI value each time the edge convergence terminal is accessed to the network.
Optionally, the electronic device includes a wireless network communication module, and the base station assigns a TMSI value to the wireless network communication module when the electronic device accesses the network each time, so that the latest I frame transmission offset can be determined according to the TMSI value assigned when the electronic device accesses the network last time, that is, the new video frame transmission offset number is determined according to the current TMSI value, which specifically includes: and carrying out residual processing on the current TMSI value and the number of video frames in the video packet to obtain the new video frame transmission offset number, namely the number of video frames in the TMSI MOD GOP.
Specifically, the wireless network communication module includes a 4G communication module and/or a 5G communication module. And the electronic equipment, namely the edge convergence terminal is internally provided with a 4G communication module and/or a 5G communication module, when the edge convergence terminal is accessed to the network each time, the 4G and/or the 5G base station distributes TMSI to the 4G communication module and/or the 5G communication module, and the edge convergence terminal needs to acquire the TMSI value each time the edge convergence terminal is accessed to the network.
Optionally, when the electronic device accesses the network each time, the paging time of the wireless network communication module is acquired, where the paging time includes a paging wireless frame number PF and a paging subframe number PO, so that the latest I-frame transmission offset can be determined according to the PF value and the PO value acquired when the electronic device accesses the network last time, that is, the new number of video frame transmission offsets is determined according to the current PF value and the PO value, which specifically includes: new video frame transmission offset number= (PF 10+po) number of video frames in MOD GOP video packets.
Specifically, the wireless network communication module includes 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 when entering the network each time.
Another way is: a random number is generated and determined as a new number of video frame transmission offsets, wherein the new number of video frame transmission offsets is less than the number of video frames, i.e., I-frame transmission offset (i.e., number of video frame transmission offsets) =random (0, number of video frames in gop video packets).
In addition, optionally, when the first video packet is detected, the sending time corresponding to the first video packet is directly determined.
S303, when the sending time corresponding to the new video packet is reached, the new video packet is transmitted to the target end through the wireless network.
And S304, 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 S305, 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 the target end through the 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 smaller, and the detected new video packet may be sent together with the video packet to be transmitted corresponding to the current video packet transmission interval, and then the new video packet is also used as one 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 arrives, it indicates that all the video packets to be transmitted corresponding to the current video packet transmission interval need to be transmitted, and then the all the video packets to be transmitted are sent to the target end through the wireless network.
The sending time corresponding to the current video packet transmission interval is the sending time corresponding to the first video packet to be transmitted in the video packets to be transmitted corresponding to the current video packet transmission interval.
Specifically, when the new video packet is also used as one video packet to be transmitted corresponding to the current video packet transmission interval, the new video packet is arranged after all the video packets to be transmitted corresponding to the current video packet 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 received first are arranged in front.
Correspondingly, when all the video packets to be transmitted corresponding to the current video packet transmission interval are sent to the target end, the video packets to be transmitted are sequentially sent according to the arrangement sequence of all the video packets to be transmitted.
Taking a specific application scenario as an example, when the electronic device receives the video packet 1 for the first time, 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, and 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 packet again, namely, receives the video packet 2, the time of receiving the video packet 2 is acquired, namely, the current time is acquired, and the current time falls in the current video packet transmission interval, and the video packet 2 is taken as a second video packet to be transmitted in the video packet transmission interval. When the electronic device receives a new video packet again, namely, receives the video packet 3, the time of receiving the video packet 3 is acquired, namely, the current time is acquired, and if the current time does not fall in the transmission interval of the current video packet, the corresponding sending time of the video packet 3 is re-acquired. 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 the 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, so as to determine whether the new video packet can be sent 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 video packets to be transmitted corresponding to the current video packet transmission interval is smaller, so that when sending the video packet to be transmitted to a target end, the new video packet can also be sent together, thereby implementing quick sending of the video packet and improving the transmission efficiency of the video packet.
Fig. 4 is a schematic structural diagram of a video transmission device according to an embodiment of the present invention, and as shown in fig. 4, the video transmission device 400 includes: a transceiver module 401 and a processing module 402.
The transceiver module 401 is configured to obtain a current video packet transmission interval when a new video packet is detected.
The processing module 402 is configured to determine a transmission time corresponding to the 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 target end through the wireless network when the transmission time corresponding to the new video packet arrives.
In one possible design, the processing module 402 is further configured to use the new video packet as the video packet to be transmitted corresponding to the current video packet transmission interval if the current time falls within the current video packet transmission interval.
The transceiver module 401 is further configured to send all the video packets to be transmitted 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:
the number of video frames in the new video packet is obtained, and the new video frame transmission offset number is determined according to the number of video frames.
And acquiring a video packet transmission period and a video frame interval time.
And determining the sending time corresponding to 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 402 is further configured to:
and acquiring the latest network access information, and determining the new video frame transmission offset number according to the latest network access information and the video frame number. Alternatively, a random number is generated and determined as a new number of video frame transmission offsets, wherein the new number of video frame transmission offsets is less than the number of video frames.
In one possible design, the new video packet 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 frames and the video frame interval time.
The product of the number of transmission offsets of the current video frame and the video frame interval time is obtained and is determined as the transmission offset duration.
And obtaining a difference value between the transmission bias 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 obtaining the sum of the transmission bias time length and the preset interval time length, and determining the sum as the cut-off time of the current video packet transmission interval.
In one possible design, the processing module 402 is further configured to:
and obtaining a video packet transmission period, and performing residual 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.
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 also configured to:
and when the first video packet is detected, determining the sending time corresponding to the first video packet.
The video transmission device provided by the embodiment of the invention can realize the video transmission method of the embodiment, and the implementation principle and the technical effect are similar, and are not repeated here.
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 apparatus 500 of the present embodiment includes: a processor 501 and a memory 502; wherein the method comprises the steps of
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-described embodiment. Reference may be made in particular to the relevant description of the embodiments of the method 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.
The embodiment of the invention also provides a computer readable storage medium, wherein computer execution instructions are stored in the computer readable storage medium, and when a processor executes the computer execution instructions, the video transmission method is realized.
The embodiments of the present invention also provide a computer program product comprising a computer program which, when executed by a processor, implements a video transmission method as described above.
In the several embodiments provided by the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the modules is merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple modules may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or modules, which may be in electrical, mechanical, or other forms.
The modules described as separate components may or may not be physically separate, and components shown as modules may or may not be physical units, may be located in one place, or may be distributed over multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional module in the embodiments of the present invention may be integrated in one processing unit, or each module may exist alone physically, or two or more modules may be integrated in one unit. The units formed by the modules can be realized in a form of hardware or a form of hardware and software functional units.
The integrated modules, which are implemented in the form of software functional modules, may be stored in a computer readable storage medium. The software functional module is stored in a storage medium, and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (english: processor) to perform some of the steps of the methods according to the embodiments of the application.
It should be understood that the above processor may be a central processing unit (english: central Processing Unit, abbreviated as CPU), or may be other general purpose processors, digital signal processors (english: digital Signal Processor, abbreviated as DSP), application specific integrated circuits (english: application Specific Integrated Circuit, abbreviated as ASIC), or the like. 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 application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in a processor for execution.
The memory may comprise a high-speed RAM memory, and may further comprise a non-volatile memory NVM, such as at least one magnetic disk memory, and may also be a U-disk, a removable hard disk, a read-only memory, a magnetic disk or optical disk, etc.
The bus may be an industry standard architecture (Industry Standard Architecture, ISA) bus, an external device interconnect (Peripheral Component, PCI) bus, or an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus, among others. The buses may be divided into address buses, data buses, control buses, etc. For ease of illustration, the buses in the drawings of the present application are not limited to only one bus or to one type of bus.
The storage medium may be implemented by any type or combination of volatile or nonvolatile 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 disk. 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. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an application specific integrated circuit (Application Specific Integrated Circuits, ASIC for short). It is also possible that the processor and the storage medium reside as discrete components in an electronic device or a master device.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the method embodiments described above may be performed by hardware associated with program instructions. The foregoing program may be stored in a computer readable storage medium. The program, when executed, performs steps including the method embodiments described above; and the aforementioned storage medium includes: various media that can store program code, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (8)
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 sending time corresponding to the new video packet;
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;
the determining the sending time corresponding to the new video packet includes:
acquiring the number of video frames in the new video packet, and determining the new video frame transmission offset number according to the number of the video frames;
acquiring a video packet transmission period and video frame interval time;
and determining the sending time corresponding to the new video packet according to the new video frame transmission offset number, the video packet transmission period and the video frame interval time.
2. The method according to claim 1, wherein the method further comprises:
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 said determining a new number of video frame transmission offsets based on said number of video frames comprises:
Acquiring the latest network access information, and determining the new video frame transmission offset number according to the latest network access information and the video frame number;
or alternatively, the process may be performed,
a random number is generated and determined as the new number of video frame transmission offsets, wherein the new number of video frame transmission offsets is less than the number of video frames.
4. The method of claim 1, wherein the new video packet includes a target video frame and other video frames;
the method further comprises the steps of:
acquiring the transmission offset number of the current video frames and the video frame interval time;
obtaining the product of the transmission offset number of the current video frame and the video frame interval time, and determining the product as the transmission offset duration;
acquiring a difference value between the transmission bias 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 obtaining the sum of the transmission bias time length and the preset interval time length, and determining the sum as the cut-off time of the current video packet transmission interval.
5. The method according to claim 1, wherein the method further comprises:
acquiring a video packet transmission period, and performing residual 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 in the current video packet transmission interval, determining that the current time does not fall in the current video packet transmission interval.
6. The method according to claim 1, wherein the method further comprises:
and when the first video packet is detected, determining the sending time corresponding to the first video packet.
7. An electronic device, comprising: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executing computer-executable instructions stored in the memory causes the at least one processor to perform the video transmission method of any one of claims 1 to 6.
8. A computer readable storage medium having stored therein computer executable instructions which, when executed by a processor, implement the video transmission method of any one of claims 1 to 6.
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