CN117412083B - Internet of things video transmission method for athletic product teaching - Google Patents
Internet of things video transmission method for athletic product teaching Download PDFInfo
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- CN117412083B CN117412083B CN202311472508.7A CN202311472508A CN117412083B CN 117412083 B CN117412083 B CN 117412083B CN 202311472508 A CN202311472508 A CN 202311472508A CN 117412083 B CN117412083 B CN 117412083B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 249
- 238000000034 method Methods 0.000 title claims abstract description 62
- 230000000386 athletic effect Effects 0.000 title claims abstract description 20
- 238000007906 compression Methods 0.000 claims abstract description 46
- 230000006835 compression Effects 0.000 claims abstract description 40
- 230000032683 aging Effects 0.000 claims abstract description 26
- 230000008569 process Effects 0.000 claims description 24
- 230000006872 improvement Effects 0.000 abstract description 14
- 230000009467 reduction Effects 0.000 description 26
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
- H04N21/26208—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints
- H04N21/26216—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints involving the channel capacity, e.g. network bandwidth
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
- H04N21/2662—Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
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Abstract
The invention relates to the technical field of video transmission, in particular to an Internet of things video transmission method for athletic product teaching, which comprises the following steps: step S1, coding and compressing recorded teaching videos, and then transmitting the coded and compressed teaching videos to a terminal, wherein the terminal plays the teaching videos through decoding operation; step S2, if the stability of the video transmission process is judged to be lower than the allowable range based on the variance of the noise area of the video frame, the duty ratio of the compression capacity is reconfigured; step S3, if the congestion degree of the transmission channel is judged to be beyond the allowable range based on the average transmission duration of a plurality of groups of videos after the re-determination of the duty ratio of the compression capacity, the first corresponding duty ratio is reconfigured; and S4, if the aging degree of the network equipment is judged to be beyond the allowable range based on the failure occurrence rate of the network equipment, the network transmission bandwidth is redetermined. The invention realizes the improvement of the precision and the stability of video transmission.
Description
Technical Field
The invention relates to the technical field of video transmission, in particular to an Internet of things video transmission method for athletic product teaching.
Background
In the prior art, more and more network teaching platforms provide network online education, and provide online live broadcast teaching for teachers and students by providing live broadcast platforms. And recording the athletic product teaching video by using a camera or other recording equipment, and storing the athletic product teaching video on a cloud server. The server can encode and compress the recorded magic cube teaching video so as to be transmitted through the Internet of things. The server can transmit the encoded and compressed teaching video to the terminal equipment of the student through the Internet of things. The transmission may be in a variety of ways. The terminal device can be used for receiving the transmitted teaching video and playing the teaching video through a decoder and a player. And when the video is played, students can communicate and ask questions with teachers in an interactive mode so as to better understand the content in the teaching video.
Chinese patent publication No.: CN105072506a discloses an internet of things video transmission method for athletic product teaching, comprising: receiving a video acquisition instruction, and acquiring an acquisition video according to the video acquisition instruction; encoding the acquired video according to a set code stream and packaging the acquired video into an RTP protocol packet; transmitting the RTP protocol packet to a video receiving end; receiving a transmission parameter returned by the video receiving terminal; adjusting the coding code stream according to the transmission parameters; encoding the acquired video according to the adjusted code stream and packaging the acquired video into an RTP protocol packet; and returning to the step of sending the RTP protocol packet to a video receiving end. Therefore, the Internet of things video transmission method for athletic product teaching has the problems that the compression process data is lost due to the fact that the compression capacity is too small in proportion, and the Internet of things product transmission efficiency is reduced due to the fact that the accuracy of video transmission is reduced and the stability of video transmission is reduced due to the fact that the number of nodes of the Internet of things is too large.
Disclosure of Invention
Therefore, the invention provides an Internet of things video transmission method for athletic product teaching, which is used for solving the problems of video transmission precision reduction and video transmission stability reduction caused by data loss in a compression process and excessive number of nodes of the Internet of things due to too small compression capacity.
In order to achieve the above purpose, the present invention provides a video transmission method of internet of things for athletic product teaching, comprising: step S1, coding and compressing recorded teaching videos, and then transmitting the coded and compressed teaching videos to a terminal, wherein the terminal plays the teaching videos through decoding operation; step S2, counting the noise areas of a plurality of video frames to determine the variance of the noise areas of the video frames, and if the stability of the video transmission process is determined to be lower than an allowable range based on the variance of the noise areas of the video frames, reconfiguring the duty ratio of the compression capacity to output a first corresponding duty ratio, or redetermining the number threshold of the connection nodes of the Internet of things based on the delay time of video playing; step S3, if the congestion degree of the transmission channel is judged to be beyond the allowable range based on the average transmission duration of a plurality of groups of videos after the re-determination of the compression capacity ratio, the first corresponding ratio is re-configured to output a second corresponding ratio, or the aging degree of the network equipment is preliminarily judged to be beyond the allowable range, and the fault occurrence rate of the network equipment is calculated; and S4, if the aging degree of the network equipment is judged to be beyond the allowable range based on the failure occurrence rate of the network equipment, the network transmission bandwidth is redetermined.
Further, in the step S2, the determining process for the stability of the video transmission process includes determining that the stability of the video transmission process is lower than the allowable range if the variance of the noise area of the video frame satisfies a preset first variance condition or a preset second variance condition, wherein,
If the variance of the noise area of the video frame only meets a preset first variance condition, primarily judging that the transmission efficiency of the node information of the Internet of things is lower than an allowable range, and secondarily judging the transmission efficiency of the node information of the Internet of things according to the delay time of video playing;
If the variance of the noise area of the video frame only meets a preset second variance condition, reconfiguring the duty ratio of the compression capacity to output a first corresponding duty ratio;
The preset first variance condition is that the variance of the noise area of the video frame is larger than the preset first variance and smaller than or equal to the preset second variance; the preset second variance condition is that the variance of the noise area of the video frame is larger than the preset first variance; the preset first variance is smaller than the preset second variance.
Further, the process of reconfiguring the duty ratio of the compression capacity comprises the steps of adjusting the duty ratio of the compression capacity according to the difference value between the variance of the noise area of the video frame and the preset second variance to output a first corresponding duty ratio;
the variance of the first corresponding duty ratio and the noise area of the video frame is in direct proportion to the difference value of the preset second variance.
Further, the secondary judging process of the transmission efficiency of the node information of the internet of things comprises the step of re-determining the number of nodes connected with the internet of things if the delay time of video playing is longer than the preset delay time and the transmission efficiency of the node information of the internet of things is lower than the allowable range.
Further, the process of redetermining the number of the nodes connected with the Internet of things comprises the step of adjusting the number of the nodes connected with the Internet of things according to the difference value between the delay time length of video playing and the preset delay time length;
The number of the nodes connected with the Internet of things is inversely proportional to the difference value between the delay time length of video playing and the preset delay time length.
Further, in the step S3, the determining process of the congestion degree of the transmission channel includes determining that the congestion degree of the transmission channel exceeds the allowable range if the average transmission duration of the plurality of sets of videos satisfies the preset first transmission duration condition or the preset second transmission duration condition, wherein,
If the average transmission duration of the plurality of groups of videos only meets the preset first transmission duration condition, reconfiguring the first corresponding duty ratio to output a second corresponding duty ratio;
if the average transmission duration of the plurality of groups of videos only meets the preset second transmission duration condition, primarily judging that the aging degree of the network equipment exceeds the allowable range, and secondarily judging the aging degree of the network equipment based on the failure occurrence rate of the network equipment;
The preset first transmission duration condition is that the average transmission duration of a plurality of groups of videos is longer than the preset first transmission duration and is smaller than or equal to the preset second transmission duration; the preset second transmission duration condition is that the average transmission duration of a plurality of groups of videos is longer than the preset second transmission duration.
Further, the calculation formula of the average transmission duration of the plurality of groups of videos is as follows:
Wherein Z is the average transmission time length of a plurality of groups of videos, X a is the transmission time length of the a-th group of videos, n is the number of videos, and n is a natural number greater than or equal to 1.
Further, the process of reconfiguring the first corresponding duty ratio includes adjusting the first corresponding duty ratio according to a difference value between an average transmission duration of a plurality of groups of videos and a preset first transmission duration to output a second corresponding duty ratio;
The second corresponding duty ratio is inversely proportional to the difference between the average transmission duration of the plurality of groups of videos and the preset first transmission duration.
Further, in the step S4, the secondary determining process for the aging degree of the network device includes, if the failure occurrence rate of the network device meets the preset occurrence rate condition, determining that the aging degree of the network device exceeds the allowable range, and determining the network transmission bandwidth again;
The preset occurrence rate condition is that the failure occurrence rate of the network equipment is larger than the preset occurrence rate.
Further, the process of redetermining the network transmission bandwidth includes adjusting the network transmission bandwidth according to a difference between the failure occurrence rate of the network device and a preset occurrence rate;
wherein, the network transmission bandwidth is in direct proportion to the difference value between the failure occurrence rate of the network equipment and the preset occurrence rate.
Compared with the prior art, the method has the beneficial effects that the method adjusts the duty ratio of the compression capacity when the stability of the video transmission process is lower than the allowable range by setting the steps S1-S4, reduces the influence of video transmission accuracy reduction caused by data loss in the compression process due to inaccurate adjustment of the duty ratio of the compression capacity, reduces the influence of video transmission stability reduction caused by excessive connection of the Internet of things products due to inaccurate adjustment of the number of the nodes connected with the Internet of things by adjusting the number of the nodes connected with the Internet of things according to the delay time of video playing, reduces the influence of video transmission stability reduction caused by inaccurate adjustment of the network transmission bandwidth, and realizes the improvement of video transmission accuracy and stability by secondarily adjusting the duty ratio of the compression capacity according to the average transmission time of a plurality of groups of videos, wherein the influence of video transmission accuracy reduction caused by overcrowding of a data transmission channel due to inaccurate adjustment of the duty ratio of the compression capacity is reduced.
Further, the method judges the stability of the video transmission process by setting the preset first variance and the preset second variance, reduces the influence of the precision reduction of the video transmission caused by inaccurate judgment of the stability of the video transmission, and further improves the precision and the stability of the video transmission.
Furthermore, the method adjusts the duty ratio of the compression capacity under the condition of the preset second variance by setting the difference between the variance of the noise area of the video frame and the preset second variance, reduces the influence of the reduction of the precision of video transmission caused by the data loss in the compression process, and further improves the precision and the stability of video transmission.
Further, the method of the invention carries out secondary judgment on the transmission efficiency of the node information of the Internet of things by setting the preset delay time length, thereby reducing the influence of the reduction of the stability of video transmission caused by inaccurate secondary judgment on the transmission efficiency of the node information of the Internet of things, and further realizing the improvement of the precision and the stability of video transmission.
Furthermore, the method adjusts the number of nodes connected with the Internet of things by setting the difference value between the delay time length of video playing and the preset delay time length under the condition of the preset time length, reduces the influence of the reduction of the stability of video transmission caused by excessive connection of products of the Internet of things, and further improves the precision and the stability of video transmission.
Further, by setting the preset first transmission duration and the preset second transmission duration, the method judges the congestion degree of the transmission channel, reduces the influence of the video transmission precision reduction caused by inaccurate judgment of the congestion degree of the transmission channel, and further improves the video transmission precision and stability.
Furthermore, the method of the invention sets the difference value between the average transmission time length of a plurality of groups of videos and the preset first transmission time length, and secondarily adjusts the duty ratio of the compression capacity under the condition of the preset first transmission time length, thereby reducing the influence of the reduction of the video transmission precision caused by overcrowding of the data transmission channel and further realizing the improvement of the video transmission precision and stability.
Furthermore, the method of the invention sets the preset incidence rate, and carries out secondary judgment on the aging degree of the network equipment under the condition of the preset incidence rate, thereby reducing the influence of the reduction of the stability of video transmission caused by inaccurate secondary judgment on the aging degree of the network equipment, and further realizing the improvement of the precision and the stability of video transmission.
Furthermore, the method adjusts the network transmission bandwidth under the condition of the preset occurrence rate by setting the difference value between the failure occurrence rate and the preset occurrence rate of the network equipment, reduces the influence of the network on the reduction of the stability of video transmission caused by the influence of the network on the output, and further realizes the improvement of the precision and the stability of the video transmission.
Drawings
Fig. 1 is an overall flowchart of an internet of things video transmission method for athletic product teaching according to an embodiment of the invention;
Fig. 2 is a specific flowchart of step S2 of the video transmission method of the internet of things for athletic product teaching according to an embodiment of the invention;
fig. 3 is a specific flowchart of step S3 of the video transmission method of the internet of things for athletic product teaching according to an embodiment of the invention;
fig. 4 is a specific flowchart of step S4 of the video transmission method of the internet of things for athletic product teaching according to an embodiment of the invention.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Fig. 1, fig. 2, fig. 3, and fig. 4 show an overall flowchart of an internet of things video transmission method for athletic product teaching, a specific flowchart of step S2, a specific flowchart of step S3, and a specific flowchart of step S4 according to an embodiment of the invention. The invention discloses an Internet of things video transmission method for athletic product teaching, which comprises the following steps:
Step S1, coding and compressing recorded teaching videos, and then transmitting the coded and compressed teaching videos to a terminal, wherein the terminal plays the teaching videos through decoding operation;
Step S2, counting the noise areas of a plurality of video frames to determine the variance of the noise areas of the video frames, and if the stability of the video transmission process is determined to be lower than an allowable range based on the variance of the noise areas of the video frames, reconfiguring the duty ratio of the compression capacity to output a first corresponding duty ratio, or redetermining the number threshold of the connection nodes of the Internet of things based on the delay time of video playing;
Step S3, if the congestion degree of the transmission channel is judged to be beyond the allowable range based on the average transmission duration of a plurality of groups of videos after the re-determination of the compression capacity ratio, the first corresponding ratio is re-configured to output a second corresponding ratio, or the aging degree of the network equipment is preliminarily judged to be beyond the allowable range, and the fault occurrence rate of the network equipment is calculated;
And S4, if the aging degree of the network equipment is judged to be beyond the allowable range based on the failure occurrence rate of the network equipment, the network transmission bandwidth is redetermined.
Specifically, the step S2 includes:
Step S21, counting the noise areas of a plurality of video frames to determine the variance of the noise areas of the video frames, and judging whether the stability of the video transmission process is lower than an allowable range or not based on the variance of the noise areas of the video frames;
step S22, if the stability of the transmission process is lower than the allowable range, the duty ratio of the compression capacity is reconfigured to output a first corresponding duty ratio, or the threshold value of the number of the connection nodes of the Internet of things is redetermined based on the delay time of video playing.
Specifically, the step S3 includes:
Step S31, judging whether the congestion degree of a transmission channel exceeds an allowable range or not based on the average transmission duration of a plurality of groups of videos after the re-determination of the compression capacity ratio;
Step S32, if the congestion degree of the transmission channel exceeds the allowable range, the first corresponding duty ratio is reconfigured to output a second corresponding duty ratio, or the aging degree of the network equipment is primarily determined to exceed the allowable range, and the failure occurrence rate of the network equipment is calculated.
Specifically, the step S4 includes:
Step S41, judging whether the aging degree of the network equipment exceeds an allowable range or not based on the failure occurrence rate of the network equipment;
in step S42, if the aging degree of the network device exceeds the allowable range, the network transmission bandwidth is redetermined.
Specifically, the variance of the noise area of the video frame is the variance of the noise area of the acquired plurality of video frames, and the method for calculating the variance of the noise area of the video frame is a conventional technical means well known to those skilled in the art, so the process for calculating the variance of the noise area of the video frame is not described herein.
Specifically, the duty ratio of the compression capacity means a ratio of the amount of video information compressed by the video information before video transmission to the amount of original video information.
Specifically, the calculation formula of the failure occurrence rate of the network device is as follows:
Wherein G is the failure occurrence rate of the network device, T A is the time period during which the network device fails in a single test period, and T B is the time period during which the network device fails in a single test period.
In particular, the network device may be a router, a switch, a VPN device.
According to the method, the proportion of the compression capacity is adjusted when the stability of the video transmission process is lower than the allowable range, the influence of video transmission accuracy reduction caused by data loss in the compression process due to inaccurate adjustment of the proportion of the compression capacity is reduced, the influence of video transmission stability reduction caused by excessive connection of products of the Internet of things due to inaccurate adjustment of the number of nodes connected with the Internet of things is reduced by adjusting the number of nodes connected with the Internet of things according to the delay time of video playing, the influence of video transmission accuracy reduction caused by overcrowding of a data transmission channel due to inaccurate adjustment of the proportion of the compression capacity is reduced by secondarily adjusting the proportion of the compression capacity according to the average transmission time of a plurality of groups of videos, the influence of video transmission accuracy reduction caused by inaccurate adjustment of the network transmission bandwidth on output is reduced by adjusting the network transmission bandwidth according to the fault occurrence rate of network equipment, and the improvement of video transmission accuracy and stability are realized.
With continued reference to fig. 2, in step S2, the determining of the stability of the video transmission process includes determining that the stability of the video transmission process is lower than an allowable range if the variance of the noise area of the video frame satisfies a preset first variance condition or a preset second variance condition, wherein,
If the variance of the noise area of the video frame only meets a preset first variance condition, primarily judging that the transmission efficiency of the node information of the Internet of things is lower than an allowable range, and secondarily judging the transmission efficiency of the node information of the Internet of things according to the delay time of video playing;
If the variance of the noise area of the video frame only meets a preset second variance condition, reconfiguring the duty ratio of the compression capacity to output a first corresponding duty ratio;
The preset first variance condition is that the variance of the noise area of the video frame is larger than the preset first variance and smaller than or equal to the preset second variance; the preset second variance condition is that the variance of the noise area of the video frame is larger than the preset first variance; the preset first variance is smaller than the preset second variance.
Specifically, the variance of the video frame noise area is denoted as Q, the preset first variance is denoted as Q1, q1=60 px 2, the preset second variance is denoted as Q2, q2=80 px 2, the difference between the variance of the video frame noise area and the preset second variance is denoted as Δq, and Δq=q-Q2 is set.
According to the method, the stability of the video transmission process is judged by setting the preset first variance and the preset second variance, so that the influence of the precision reduction of the video transmission caused by inaccurate judgment of the stability of the video transmission is reduced, and the precision and the stability of the video transmission are further improved.
With continued reference to fig. 2, the process of reconfiguring the duty ratio of the compression capacity includes adjusting the duty ratio of the compression capacity according to a difference between a variance of a noise area of the video frame and a preset second variance to output a first corresponding duty ratio;
the variance of the first corresponding duty ratio and the noise area of the video frame is in direct proportion to the difference value of the preset second variance.
Specifically, the duty ratio of the compression capacity is adjusted to a first duty ratio by using a preset first duty ratio adjustment coefficient under the condition of a preset first difference value; the preset first variance difference condition is that the difference between the variance of the noise area of the video frame and the preset second variance is smaller than or equal to the preset variance difference;
Adjusting the duty ratio of the compression capacity to a second duty ratio using a preset second duty ratio adjustment coefficient under a preset second variance difference condition; the preset second variance difference condition is that the difference between the variance of the noise area of the video frame and the preset second variance is larger than the preset variance difference;
the preset first duty ratio adjustment coefficient is smaller than the preset second duty ratio adjustment coefficient.
Specifically, the first corresponding duty cycle includes the first duty cycle and the second duty cycle.
Specifically, the preset variance difference is denoted as Δq0, Δq0=3px 2, the preset first duty cycle adjustment coefficient is denoted as α1, α1=1.2, the preset second variance difference is denoted as α2, α2=1.4, the duty cycle of the compression capacity is denoted as V, wherein 1< α1< α2, the adjusted first corresponding duty cycle is denoted as V ', V' =v× (1+αi)/2, wherein αi is the preset i-th duty cycle adjustment coefficient, and i=1, 2.
According to the method, the difference value between the variance of the noise area of the video frame and the preset second variance is set, the duty ratio of the compression capacity is adjusted under the condition of the preset second variance, the influence of the reduction of the precision of video transmission caused by the data loss in the compression process is reduced, and the improvement of the precision and the stability of video transmission is further realized.
With continued reference to fig. 2, the secondary determining process for the transmission efficiency of the node information of the internet of things includes, if the delay time of the video playing is longer than the preset delay time, determining that the transmission efficiency of the node information of the internet of things is lower than the allowable range, and determining again the number of nodes connected to the internet of things.
Specifically, the preset delay time length is denoted as P1, p1=0.03 s is set, the delay time length of video playing is denoted as P, the difference between the delay time length of video playing and the preset delay time length is denoted as Δp, and Δp=p-P1 is set.
According to the method, the transmission efficiency of the node information of the Internet of things is secondarily judged by setting the preset delay time length, so that the influence of the stability reduction of video transmission caused by inaccurate secondary judgment of the transmission efficiency of the node information of the Internet of things is reduced, and the improvement of the accuracy and the stability of video transmission is further realized.
With continued reference to fig. 2, the process of redetermining the number of nodes connected to the internet of things includes adjusting the number of nodes connected to the internet of things according to a difference between a delay duration of video playing and a preset delay duration;
The number of the nodes connected with the Internet of things is inversely proportional to the difference value between the delay time length of video playing and the preset delay time length.
Specifically, under the condition of presetting a first delay duration difference value, adjusting the number of nodes connected with the Internet of things to a first number by using a preset second number adjustment coefficient; the preset first delay time length difference condition is that the difference value between the delay time length of video playing and the preset delay time length is smaller than or equal to the preset delay time length difference value;
Under the condition of presetting a second delay time difference value, adjusting the number of nodes connected with the Internet of things to a second number by using a preset first number adjusting coefficient; the difference value condition of the preset second delay time length is that the difference value between the delay time length of video playing and the preset delay time length is larger than the difference value of the preset delay time length;
wherein the preset first number adjustment coefficient is smaller than the preset second number adjustment coefficient.
Specifically, the difference of the preset delay time length is denoted as Δp0, Δp0=0.01 s is set, the preset first number adjustment coefficient is denoted as β1, β1=0.8 is set, the preset second number adjustment coefficient is denoted as β2, β2=0.9 is set, the number of nodes connected with the internet of things is denoted as H, wherein 0 < β1 < β2 <1, the number of nodes connected with the internet of things after adjustment is denoted as H ', H' =h× (1+2βj)/3 is set, βj is the preset j-th number adjustment coefficient, and j=1, 2 is set.
According to the method, the difference value of the delay time length of video playing and the preset delay time length is set, the number of nodes connected with the Internet of things is adjusted under the preset time length condition, the influence of the reduction of the stability of video transmission caused by excessive connection of products of the Internet of things is reduced, and the improvement of the accuracy and the stability of video transmission is further realized.
With continued reference to fig. 3, in step S3, the determining process of the congestion degree of the transmission channel includes determining that the congestion degree of the transmission channel exceeds the allowable range if the average transmission duration of the plurality of sets of videos satisfies a preset first transmission duration condition or a preset second transmission duration condition, wherein,
If the average transmission duration of the plurality of groups of videos only meets the preset first transmission duration condition, reconfiguring the first corresponding duty ratio to output a second corresponding duty ratio;
if the average transmission duration of the plurality of groups of videos only meets the preset second transmission duration condition, primarily judging that the aging degree of the network equipment exceeds the allowable range, and secondarily judging the aging degree of the network equipment based on the failure occurrence rate of the network equipment;
The preset first transmission duration condition is that the average transmission duration of a plurality of groups of videos is longer than the preset first transmission duration and is smaller than or equal to the preset second transmission duration; the preset second transmission duration condition is that the average transmission duration of a plurality of groups of videos is longer than the preset second transmission duration.
Specifically, the preset first transmission duration is denoted as Y1, the preset second transmission duration is denoted as Y2, the preset second transmission duration is denoted as y2=0.04 s, the average transmission duration of the plurality of groups of videos is denoted as Y, the difference between the average transmission duration of the plurality of groups of videos and the preset first transmission duration is denoted as Δy, and Δy=y-Y1 is set.
According to the method, the congestion degree of the transmission channel is judged by setting the preset first transmission time length and the preset second transmission time length, so that the influence of the video transmission accuracy reduction caused by inaccurate judgment of the congestion degree of the transmission channel is reduced, and the improvement of the video transmission accuracy and stability is further realized.
With continued reference to fig. 3, the calculation formula of the average transmission duration of the several groups of videos is as follows:
Wherein Z is the average transmission time length of a plurality of groups of videos, X a is the transmission time length of the a-th group of videos, n is the number of videos, and n is a natural number greater than or equal to 1.
With continued reference to fig. 3, the process of reconfiguring the first corresponding duty ratio includes adjusting the first corresponding duty ratio according to a difference between an average transmission duration of a plurality of groups of videos and a preset first transmission duration to output a second corresponding duty ratio;
The second corresponding duty ratio is inversely proportional to the difference between the average transmission duration of the plurality of groups of videos and the preset first transmission duration.
Specifically, under the condition of presetting a first transmission duration difference value, secondarily adjusting the first corresponding duty ratio to a third duty ratio by using a preset fourth duty ratio secondary adjustment coefficient; the preset first transmission time length difference condition is that the difference value between the average transmission time length of a plurality of groups of videos and the preset first transmission time length is smaller than or equal to the preset transmission time length difference value;
under the condition of presetting a second transmission time difference value, secondarily adjusting the first corresponding duty ratio to a fourth duty ratio by using a preset third duty ratio secondary adjustment coefficient; the difference value condition of the preset second transmission time length is that the difference value between the average transmission time length of a plurality of groups of videos and the preset first transmission time length is larger than the difference value of the preset transmission time length;
the preset third duty ratio secondary adjustment coefficient is smaller than the preset fourth duty ratio secondary adjustment coefficient.
Specifically, the second corresponding duty cycle includes the third duty cycle and the fourth duty cycle.
Specifically, the preset transmission duration difference is denoted as Δy, Δy=0.01 s, the preset third duty cycle secondary adjustment coefficient is denoted as α3, α3=0.7, the preset fourth duty cycle secondary adjustment coefficient is denoted as α4, α4=0.8, the adjusted second corresponding duty cycle is denoted as V ", V" =v' × (1+αm)/2 is set, where αm is the preset m-th duty cycle secondary adjustment coefficient, and m=3, 4.
According to the method, the average transmission time length of a plurality of groups of videos is set to be different from the preset first transmission time length, the ratio of the compression capacity is secondarily adjusted under the condition of the preset first transmission time length, the influence of the reduction of the video transmission precision caused by overcrowding of the data transmission channel is reduced, and the improvement of the video transmission precision and stability is further realized.
Referring to fig. 4, in step S4, the secondary determining process for the aging degree of the network device includes, if the failure occurrence rate of the network device meets the preset occurrence rate condition, determining that the aging degree of the network device exceeds the allowable range, and determining the network transmission bandwidth again;
The preset occurrence rate condition is that the failure occurrence rate of the network equipment is larger than the preset occurrence rate.
Specifically, the preset occurrence rate is denoted as R0, r0=0.08 is set, the failure occurrence rate of the network device is denoted as R, the difference between the failure occurrence rate of the network device and the preset occurrence rate is denoted as Δr, and Δr=r—r0 is set.
According to the method, the preset incidence rate is set, the aging degree of the network equipment is subjected to secondary judgment under the condition of the preset incidence rate, the influence of the reduction of the stability of video transmission caused by inaccurate secondary judgment of the aging degree of the network equipment is reduced, and the improvement of the precision and the stability of video transmission is further realized.
With continued reference to fig. 4, the process of redetermining the network transmission bandwidth includes adjusting the network transmission bandwidth according to a difference between the failure occurrence rate of the network device and a preset occurrence rate;
wherein, the network transmission bandwidth is in direct proportion to the difference value between the failure occurrence rate of the network equipment and the preset occurrence rate.
Specifically, under the condition of presetting a first occurrence rate difference value, adjusting the network transmission bandwidth to a first bandwidth by using a preset first bandwidth adjustment coefficient; the preset first occurrence rate difference condition is that the difference value between the failure occurrence rate of the network equipment and the preset occurrence rate is smaller than or equal to the preset occurrence rate difference value;
Adjusting the network transmission bandwidth to a second bandwidth by using a preset second bandwidth adjustment coefficient under the condition of a preset second occurrence rate difference value; the preset second occurrence rate difference condition is that the difference between the failure occurrence rate of the network equipment and the preset occurrence rate is larger than the preset occurrence rate difference;
Wherein the preset first bandwidth adjustment coefficient is smaller than the preset second bandwidth adjustment coefficient.
Specifically, the preset occurrence rate difference is denoted as Δr0, Δr0=0.01, the preset first bandwidth adjustment coefficient is denoted as γ1, γ1=1.1, the preset second bandwidth adjustment coefficient is denoted as γ2, γ2=1.3, the network transmission bandwidth is denoted as L, wherein 1 < γ1 < γ2, the adjusted network transmission bandwidth is denoted as L ', L' =lx (1+3γw)/4, wherein γw is a preset w-th threshold adjustment coefficient, and w=1, 2.
According to the method, the network transmission bandwidth is adjusted under the condition of the preset occurrence rate by setting the difference value between the occurrence rate of the faults of the network equipment and the preset occurrence rate, so that the influence of the network on the reduction of the stability of video transmission caused by the influence of the network on the output is reduced, and the improvement of the precision and the stability of video transmission is further realized.
Example 1
In this embodiment 1, the compression capacity is adjusted according to the difference between the variance of the noise area of the video frame and the preset second variance, where the preset variance difference is denoted as Δq0, the preset first duty adjustment coefficient is denoted as α1, the preset second duty adjustment coefficient is denoted as α2, the compression capacity is denoted as V, α1=1.2, α2=1.4, Δq0=3px 2, and v=0.6.
In example 1, Δq=5px 2, Δq > - Δq0 was determined and the duty ratio of the compression capacity was adjusted to a second duty ratio using a preset first duty ratio adjustment coefficient, and V' =0.6× (1+1.2)/2=0.66 was calculated.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
Claims (4)
1. The Internet of things video transmission method for athletic product teaching is characterized by comprising the following steps:
Step S1, coding and compressing recorded teaching videos, and then transmitting the coded and compressed teaching videos to a terminal, wherein the terminal plays the teaching videos through decoding operation;
Step S2, counting the noise areas of a plurality of video frames to determine the variance of the noise areas of the video frames, and if the stability of the video transmission process is determined to be lower than an allowable range based on the variance of the noise areas of the video frames, reconfiguring the duty ratio of the compression capacity to output a first corresponding duty ratio, or redetermining the number threshold of the connection nodes of the Internet of things based on the delay time of video playing;
Step S3, if the congestion degree of the transmission channel is judged to be beyond the allowable range based on the average transmission duration of a plurality of groups of videos after the re-determination of the compression capacity ratio, the first corresponding ratio is re-configured to output a second corresponding ratio, or the aging degree of the network equipment is preliminarily judged to be beyond the allowable range, and the fault occurrence rate of the network equipment is calculated;
step S4, if the aging degree of the network equipment is judged to be beyond the allowable range based on the failure occurrence rate of the network equipment, the network transmission bandwidth is redetermined;
in the step S2, the determining process for the stability of the video transmission process includes determining that the stability of the video transmission process is lower than the allowable range if the variance of the noise area of the video frame satisfies a preset first variance condition or a preset second variance condition, wherein,
If the variance of the noise area of the video frame only meets a preset first variance condition, primarily judging that the transmission efficiency of the node information of the Internet of things is lower than an allowable range, and secondarily judging the transmission efficiency of the node information of the Internet of things according to the delay time of video playing;
If the variance of the noise area of the video frame only meets a preset second variance condition, reconfiguring the duty ratio of the compression capacity to output a first corresponding duty ratio;
The preset first variance condition is that the variance of the noise area of the video frame is larger than the preset first variance and smaller than or equal to the preset second variance; the preset second variance condition is that the variance of the noise area of the video frame is larger than the preset first variance; the preset first variance is smaller than the preset second variance;
the process of reconfiguring the duty ratio of the compression capacity comprises the steps of adjusting the duty ratio of the compression capacity according to the difference value between the variance of the noise area of the video frame and the preset second variance to output a first corresponding duty ratio;
The variance of the first corresponding duty ratio and the noise area of the video frame is in direct proportion to the difference value of the preset second variance;
The secondary judging process of the transmission efficiency of the node information of the Internet of things comprises the steps of if the delay time length of video playing is longer than the preset delay time length, secondarily judging that the transmission efficiency of the node information of the Internet of things is lower than an allowable range, and re-determining the number of nodes connected with the Internet of things;
the process of redefining the number of the nodes connected with the Internet of things comprises the steps of adjusting the number of the nodes connected with the Internet of things according to the difference value between the delay time length of video playing and the preset delay time length;
the number of the nodes connected with the Internet of things is inversely proportional to the difference value between the delay time length of video playing and the preset delay time length;
in the step S3, the determining process of the congestion degree of the transmission channel includes determining that the congestion degree of the transmission channel exceeds the allowable range if the average transmission duration of the plurality of sets of videos satisfies a preset first transmission duration condition or a preset second transmission duration condition, wherein,
If the average transmission duration of the plurality of groups of videos only meets the preset first transmission duration condition, reconfiguring the first corresponding duty ratio to output a second corresponding duty ratio;
if the average transmission duration of the plurality of groups of videos only meets the preset second transmission duration condition, primarily judging that the aging degree of the network equipment exceeds the allowable range, and secondarily judging the aging degree of the network equipment based on the failure occurrence rate of the network equipment;
The preset first transmission duration condition is that the average transmission duration of a plurality of groups of videos is longer than the preset first transmission duration and is smaller than or equal to the preset second transmission duration; the preset second transmission duration condition is that the average transmission duration of a plurality of groups of videos is longer than the preset second transmission duration;
The process of reconfiguring the first corresponding duty ratio comprises the steps of adjusting the first corresponding duty ratio according to the difference value between the average transmission duration of a plurality of groups of videos and the preset first transmission duration to output a second corresponding duty ratio;
The second corresponding duty ratio is inversely proportional to the difference between the average transmission duration of the plurality of groups of videos and the preset first transmission duration.
2. The internet of things video transmission method for athletic product teaching of claim 1, wherein the calculation formula of the average transmission duration of the plurality of groups of videos is:
Wherein Z is the average transmission time length of a plurality of groups of videos, X a is the transmission time length of the a-th group of videos, n is the number of videos, and n is a natural number greater than or equal to 1.
3. The video transmission method of internet of things for athletic product teaching according to claim 1, wherein in the step S4, the secondary determining process of the aging degree of the network device includes, if the failure occurrence rate of the network device meets a preset occurrence rate condition, determining that the aging degree of the network device exceeds an allowable range, and determining the network transmission bandwidth again;
The preset occurrence rate condition is that the failure occurrence rate of the network equipment is larger than the preset occurrence rate.
4. The video transmission method of the internet of things for athletic product teaching of claim 3, wherein the process of redetermining the network transmission bandwidth includes adjusting the network transmission bandwidth according to a difference between a failure occurrence rate of the network device and a preset occurrence rate;
wherein, the network transmission bandwidth is in direct proportion to the difference value between the failure occurrence rate of the network equipment and the preset occurrence rate.
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