CN110971936A - Video data processing method, server and video receiving end - Google Patents
Video data processing method, server and video receiving end Download PDFInfo
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- CN110971936A CN110971936A CN201911243844.8A CN201911243844A CN110971936A CN 110971936 A CN110971936 A CN 110971936A CN 201911243844 A CN201911243844 A CN 201911243844A CN 110971936 A CN110971936 A CN 110971936A
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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
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/23805—Controlling the feeding rate to the network, e.g. by controlling the video pump
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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
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/239—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests
- H04N21/2393—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests involving handling client requests
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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
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/24—Monitoring of processes or resources, e.g. monitoring of server load, available bandwidth, upstream requests
- H04N21/2402—Monitoring of the downstream path of the transmission network, e.g. bandwidth available
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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
- H04N21/258—Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
- H04N21/25808—Management of client data
- H04N21/25841—Management of client data involving the geographical location of the client
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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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- 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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/437—Interfacing the upstream path of the transmission network, e.g. for transmitting client requests to a VOD server
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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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/44209—Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network
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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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/44227—Monitoring of local network, e.g. connection or bandwidth variations; Detecting new devices in the local network
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The embodiment of the invention relates to a video data processing method, a server and a video receiving end, wherein the method comprises the following steps: receiving an instruction of a video receiving end for requesting to acquire video data; acquiring the regional signal intensity of the video receiving end when the video receiving end reaches the next region after the preset time; and adjusting the transmission parameters of the video data to be transmitted in advance according to the regional signal intensity, and transmitting the video data to the video receiving end according to the transmission parameters. According to the method, after an instruction that a video receiving end requests to acquire video data is received, the regional signal intensity of the video receiving end when the video receiving end reaches the next region after the preset time is obtained, and the transmission parameter of the video data to be transmitted is adjusted in advance according to the regional signal intensity of the next region, so that the transmission parameter of the video data can be matched with the regional signal intensity of the next region, and the video data can be smoothly played on the video receiving end.
Description
Technical Field
The present invention relates to the field of data processing, and in particular, to a video data processing method, a server, and a video receiving end.
Background
At present, a high-speed railway becomes a tool for people to go out conveniently in daily life, and real-time live video is needed even in a high-speed rail in fast-paced life, especially during a major breaking news event or a sports event. The method for keeping high-speed communication on high-speed rails through mobile networks such as 4G/5G is the best realization mode of cost performance at present. However, due to the limited network arrangement capability of the operator, the mobile network on the high-speed rail is very unstable when the high-speed rail runs, and thus the real-time transmission quality of video data cannot be guaranteed, so that a user often has a stuck phenomenon when watching a video on the high-speed rail, and the user experience is seriously affected.
Disclosure of Invention
The invention aims to provide a video data processing method, a server and a video receiving end aiming at the defects of the prior art so as to realize smooth playing of video data, thereby realizing smooth video playing which can be watched by a user on a high-speed rail, improving user experience and solving the technical problem that the user cannot watch smooth video on the high-speed rail in the prior art.
In view of the above, in a first aspect, an embodiment of the present invention provides a video data processing method, including:
receiving an instruction of a video receiving end for requesting to acquire video data;
acquiring the regional signal intensity of the video receiving end reaching the next region after the preset time;
and adjusting the transmission parameters of the video data to be transmitted in advance according to the regional signal intensity, and transmitting the video data to the video receiving end according to the transmission parameters.
Preferably, the adjusting the transmission parameter of the video data according to the regional signal strength includes:
and recognizing that the signal intensity of the area is smaller than the preset signal intensity, and improving the transmission priority of I frame data in the video data.
Further preferably, after the increasing the transmission priority of the I frame data in the video data, the method includes:
receiving the receiving time length of the received video data fed back by the video receiving end;
and recognizing that the receiving time length is greater than the preset receiving time length, and reducing the video frame rate and/or the video code rate of the video data.
Further preferably, the method further comprises the following steps:
recognizing that the signal intensity of the area is greater than or equal to the preset signal intensity, and reducing the transmission priority of the I frame data; and/or increasing the video frame rate and/or video code rate of the video data.
Further preferably, before the obtaining of the area signal strength of the video receiving end reaching the next area after the preset time, the method further includes:
and receiving the position information sent by the video receiving end, determining the position change rate of the video receiving end according to the position information, and identifying that the position change rate is greater than a preset rate.
Further preferably, the obtaining of the area signal strength of the video receiving end reaching the next area after the preset time includes:
acquiring a moving track of the video receiving end;
determining the area information of the next area according to the moving track;
and inquiring a pre-constructed signal intensity mapping chart according to the area information and the position change rate to obtain the area signal intensity, wherein the signal intensity mapping chart comprises the mapping relation among the area information, the position change rate and the area signal intensity.
Further preferably, before querying the pre-constructed signal strength map, the method includes:
receiving historical delay data and/or historical packet loss rate of the video receiving end in the next area, which are fed back by the video receiving end;
determining the historical signal intensity of the video receiving end in the next area according to the historical delay data and/or the historical packet loss rate;
acquiring the historical position change rate of the video receiving end in the next area;
and constructing the signal strength mapping map according to the area information of the next area, the historical position change rate and the historical signal strength.
In a second aspect, an embodiment of the present invention further provides a video data processing method, where the method includes:
sending an instruction for requesting to acquire video data to a server to trigger the server to acquire the area signal intensity when a video receiving end moves to the next area, and enabling the server to adjust the transmission parameters of the video data to be sent in advance according to the area signal intensity;
and receiving the video data sent by the server.
Preferably, the method further comprises the following steps:
and sending the position information of the video receiving end to a server, so that the server determines the position change rate of the video receiving end according to the position information, and the server recognizes that the position change rate is greater than a preset rate.
In a third aspect, an embodiment of the present invention further provides a server, where the server includes:
the first receiving module is used for receiving an instruction of a video receiving end for requesting to acquire video data;
the acquisition module is used for acquiring the regional signal intensity of the video receiving end reaching the next region after the preset time;
and the adjusting module is used for adjusting the transmission parameters of the video data to be sent in advance according to the regional signal intensity and sending the video data to the video receiving end according to the transmission parameters.
In a fourth aspect, an embodiment of the present invention further provides a video receiving end, where the video receiving end includes:
the sending module is used for sending an instruction for requesting to acquire video data to a server so as to trigger the server to acquire the regional signal intensity of the video receiving end reaching the next region after the preset time, and the server is enabled to adjust the transmission parameters of the video data to be sent in advance according to the regional signal intensity;
and the second receiving module is used for receiving the video data sent by the server.
The video data processing method, the server and the video receiving end provided by the embodiment of the invention at least have the following technical effects or advantages:
1. after receiving an instruction that a video receiving end requests to acquire video data, acquiring the regional signal intensity when the video receiving end reaches the next region after the preset time, and adjusting the transmission parameter of the video data to be transmitted in advance according to the regional signal intensity of the next region, so that the transmission parameter of the video data can be matched with the regional signal intensity of the next region, and the video data can be smoothly played on the video receiving end.
2. If the video data still cannot meet the requirement of smooth playing after the transmission priority of the I frame data in the video data is improved, the video frame rate and/or the video code rate of the video data are/is reduced, so that the video data can be further ensured to be smoothly played on a video receiving end.
3. The signal intensity of the region is predicted by combining historical data, and the prediction accuracy is improved.
Drawings
FIG. 1 is a diagram of a system architecture in which a video data processing method according to an embodiment of the present disclosure may be implemented;
FIG. 2 is a flow chart of a video data processing method according to an embodiment of the disclosure;
fig. 3 is a schematic diagram of a step of adjusting a video frame rate and/or a video bitrate of video data in a video data processing method according to an embodiment of the disclosure;
fig. 4 is a schematic diagram illustrating a step of determining that a video playing at a video receiving end may have a pause phenomenon in a video data processing method according to an embodiment of the disclosure;
fig. 5 is a schematic diagram illustrating a step of acquiring the area signal strength of the video receiving end reaching the next area after a preset time in the video data processing method according to an embodiment of the disclosure;
FIG. 6 is a schematic diagram of steps in constructing the signal strength map in the video data processing method according to an embodiment of the disclosure;
FIG. 7 is a flowchart illustrating a video data processing method according to another embodiment of the disclosure;
FIG. 8 is a block diagram of a server according to an embodiment of the present disclosure;
fig. 9 is a schematic structural diagram of a video receiving end according to an embodiment of the present disclosure;
fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the disclosure.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Fig. 1 is a diagram of a system architecture in which a video data processing method according to an embodiment of the present disclosure may be implemented. As shown in fig. 1, the system includes a video receiver 110 and a server 120, and the video receiver 110 and the server 120 are connected via a network 130. In the system, the video receiving end 110 can be a mobile terminal or a fixed terminal; the server 120 may represent a single server, such as a computer server, or a network 130 of multiple servers (e.g., cloud servers) working together to perform functions may include a large computer network, such as a Local Area Network (LAN), Wide Area Network (WAN), the internet, a cellular network, or a combination thereof, connecting any number of video receivers 110 and servers 120.
In the present system, the video receiver 110 sends a request instruction for obtaining video data to the server 120, and after receiving the request instruction, the server 120 transmits the video data to the video receiver 110 through the network 130.
It should be noted that the video data processing method in this embodiment is mainly applied to an application scenario in which the position of a video receiving end changes relatively quickly, for example, the video receiving end located on a high-speed rail. Specifically, since the speed of the high-speed rail is basically over 220 kilometers per hour, the base station switching frequency of signals at the video receiving end on the high-speed rail is very frequent when the high-speed rail runs. In addition, due to the limited network coverage capability of the current operators, the large span of the high-speed rail area, the large difference of geographic environments along the way and other factors, the network signal strength at different positions on the high-speed rail is different. When the base station of the signal of the video receiving end is switched from the area with high signal strength to the area with low signal strength, the signal strength of the current area is not enough to support the smooth playing of the video, so that the video playing of the video receiving end is blocked. In order to solve the above problem, the present embodiment specifically proposes a video data processing method, which is described in detail below.
Those skilled in the art will appreciate that video sink 110 may comprise any type of fixed and mobile terminals such as desktop computers, laptops, handheld computers, Personal Digital Assistants (PDAs), cellular telephones, network appliances, smart phones, Enhanced General Packet Radio Service (EGPRS) mobile telephones, media players, navigation devices, or a combination of any one or more of these or other data processing devices. It should also be appreciated by those skilled in the art that the system is for illustration purposes only and is not intended to limit the scope of the embodiments of the present disclosure. In some cases, certain components may be added or subtracted or replaced as specifically desired.
Example one
Fig. 2 is a flowchart illustrating a video data processing method according to an embodiment of the disclosure. As shown in fig. 2, the video data processing method according to the embodiment of the present invention includes the following steps:
s201, receiving an instruction of a video receiving end for requesting to acquire video data.
Specifically, the server and the video receiving end are connected through a network and communicate with each other. When the video receiving end needs to play the video data, the video receiving end sends an instruction for requesting to acquire the video data to the server, and then the server receives the request instruction.
S202, acquiring the area signal intensity of the video receiving end reaching the next area after the preset time.
Specifically, after receiving an instruction that a video receiving end requests to acquire video data, the server starts to acquire the area signal intensity of the next area reached by the video receiving end after a preset time. For example, the area to be reached at the next moment can be predicted according to the moving track of the video receiving end, and then the area signal strength of the area, which is stored in advance and reaches the next area after the video receiving end reaches the next area after the preset time, can be obtained.
S203, adjusting the transmission parameters of the video data to be transmitted in advance according to the regional signal intensity, and transmitting the video data to the video receiving end according to the transmission parameters.
Specifically, the area signal strength of the next area is determined, and the transmission parameter of the video data to be sent can be adjusted in advance according to the area signal strength, so that the area signal strength of the next area is matched with the transmission parameter of the video data, the video receiving end can completely receive the video data sent to the video receiving end by the server according to the adjusted transmission parameter, and the video receiving end can smoothly play the video data.
As a possible implementation manner, in this embodiment, a preset signal strength is stored in the server, and when the identified regional signal strength is smaller than the preset signal strength, it indicates that the video receiving end cannot normally play the video data in the next region, and at this time, the transmission priority of the I frame data in the video data may be improved, that is, the I frame data is preferentially transmitted, so that the smoothness of video playing is ensured, and the user experience is improved.
Further, in order to ensure that the signal intensity level in the next area can meet the requirement of smooth video playing after the transmission priority of the I frame data is raised, the video frame rate and/or the video code rate of the video data can be adjusted. Specifically, as shown in fig. 3, the method includes the following steps:
s301, receiving the receiving duration of the received video data fed back by the video receiving end.
The video receiving end can record the receiving time length in the process of receiving the video data and send the receiving time length to the server in real time or intermittently, so that the server can know the receiving time length of the video data received by the video receiving end.
S302, judging whether the receiving time length is larger than a preset receiving time length.
And after receiving the receiving time fed back by the video receiving end, the server compares the receiving time with the preset receiving time. When the receiving duration is longer than the preset receiving duration, it indicates that the video receiving end cannot smoothly receive the video data, that is, the video receiving end still cannot smoothly play the video data, then step S303 is executed; and when the receiving duration is less than or equal to the preset receiving duration, indicating that the video receiving end can smoothly receive the video data, that is, the video receiving end can smoothly play the video data, then step S304 is executed.
And S303, reducing the video frame rate and/or video code rate of the video data.
If the receiving time is longer than the preset receiving time, the video frame rate and/or the code rate of the video data are/is reduced to reduce the size of the video data, so that a video receiving end can acquire a complete data packet of the video data, the video data are smoothly played, and user experience is improved.
And S304, keeping the video frame rate and/or the video code rate unchanged.
If the receiving time length is less than or equal to the preset receiving time length, the video frame rate and/or the video code rate of the video data are kept unchanged, so that a user can watch a picture with higher definition, and the user experience is improved.
Further, since the position of the video receiving end is changed with time, when the signal intensity of the area of the next area to which the video receiving end is to arrive is greater than the preset signal intensity, the transmission parameter of the video data can be restored to the initial value, that is, the transmission priority of the I frame data is reduced, and/or the video frame rate and/or the video code rate of the video data is increased. In addition, the transmission priority of the I frame data can be further reduced again according to the regional signal strength, and/or the video frame rate and/or the video code rate of the video data can be increased again; that is, the transmission priority of the I frame data is made lower than the initial value, and/or the video frame rate and/or the video code rate is made higher than the initial value, so that the user can experience the video data related to the signal strength level on the video receiving end.
In some embodiments, it is required to determine whether the base station change frequency of the signal of the video receiving end exceeds a certain degree before step S202 in order to consider that the video playing at the video receiving end is easy to cause a pause phenomenon when the base station change frequency of the signal of the video receiving end exceeds a certain degree. Since the base station variation frequency of the signal at the video receiving end has a direct relationship with the position variation rate of the video receiving end, in this embodiment, it is determined whether the video playing at the video receiving end will have a pause phenomenon according to the position variation rate of the video receiving end, and when it is determined that the pause phenomenon occurs, step S202 is executed. Specifically, as shown in fig. 4, the method includes the following steps:
s401, receiving the position information sent by the video receiving end.
Specifically, a positioning device, such as a Global Positioning System (GPS) device, is provided in the video receiving end. When the video receiving end sends the instruction of requesting to acquire the video data to the server, the video receiving end can report the position of the video receiving end to the server, so that the server can receive the position information of the video receiving end.
S402, determining the position change rate of the video receiving end according to the position information, and identifying that the position change rate is greater than a preset rate.
Specifically, after receiving the position information sent by the video receiving end, the server can determine the position change rate of the video receiving end according to the position information. For example, the position of the video receiver received by the server at the first time T1 is a, and the position at the second time T2 is B, where the distance between the position a and the position B is L, and the position change rate of the video receiver at this time is L/(T2-T1).
Further, comparing the determined position change rate with a preset rate, namely identifying whether the position change rate is greater than the preset rate, namely, a video playing video played by a video receiving end has a pause phenomenon; and when the position change rate is greater than the preset rate, performing step S202.
In some embodiments, it may be selected to obtain the area signal strength of the video receiving end reaching the next area after a preset time by querying a pre-constructed signal strength map. As shown in fig. 5, the method comprises the following steps:
s501, obtaining a moving track of a video receiving end.
Specifically, the server may determine an end-to-end movement trajectory of the video receiving end according to the received position information of the video receiving end.
And S502, determining the area information of the next area according to the moving track.
Specifically, after receiving the movement track of the video receiving end, the server compares the movement track with a pre-stored route track map, so as to determine the current movement route of the video receiving end.
Further, the product of the position change rate of the video receiving end and the preset time can determine the next area to be reached by the video receiving end after the preset time, and further determine the area information of the next area.
S503, inquiring a pre-constructed signal intensity mapping chart according to the area information and the position change rate to obtain the area signal intensity, wherein the signal intensity mapping chart comprises the mapping relation among the area information, the position change rate and the area signal intensity.
Specifically, a pre-constructed signal strength map is stored in the server, wherein the signal strength map comprises mapping relations among area information, a position change rate and area signal strength. Further, the signal intensity mapping chart is inquired according to the area information and the position change rate, and the area signal intensity of the next area can be determined.
In some embodiments, before querying the pre-constructed signal strength map, the signal strength map may also be constructed according to historical data fed back by the video receiving end. Specifically, as shown in fig. 6, the method includes the following steps:
s601, receiving historical delay data and/or historical packet loss rate of the video receiving end in the next area, wherein the historical delay data and/or the historical packet loss rate are fed back by the video receiving end.
In the process of playing the video data in the next area, the video receiving end can record the delay data condition and/or the packet loss rate condition of the video receiving end, and send the recorded historical delay data and/or the historical packet loss rate to the server in real time or intermittently, so that the server can acquire the historical delay data and/or the historical packet loss rate of the video receiving end in the next area.
S602, determining the historical signal strength of the video receiving end in the next area according to the historical delay data and/or the historical packet loss rate.
After receiving the historical delay data and/or the historical packet loss rate sent by the video receiving end, the server analyzes the historical delay data and/or the historical packet loss rate, for example, performs weighted average calculation on multiple times of data of the same type to obtain an average value of the data of the same type, and then compares the size of the average value with that of a preset average value to determine the historical signal intensity of the video receiving end in the next area.
S603, obtaining the historical position change rate of the video receiving end in the next area.
Specifically, the position change rate of the video receiving end in a certain area can be determined according to the position information of the video receiving end fed back by the video receiving end each time. Further, the position change rate of the video receiving end in a certain area each time is subjected to weighted average calculation, so that the historical position change rate in the area can be obtained.
S604, constructing a signal intensity mapping chart according to the area information, the historical position change rate and the historical signal intensity of the next area.
Specifically, by acquiring the historical position change rate and the historical signal strength of the next area, a signal strength map among the area information, the historical position change rate and the historical signal strength of the next area can be constructed.
To facilitate understanding of the process of constructing the signal strength map, the following description will take the example where the video receiving end is located on a high-speed rail.
For a high-speed rail, the running path and the running speed of the high-speed rail are calibrated in advance, and the speed of the high-speed rail in a certain area is also known. Therefore, the mapping relation among the area, the historical position change rate and the historical signal strength can be determined only by determining the historical signal strength of the area according to the historical delay data and/or the historical packet loss rate of the video receiving end in the area.
In addition, in order to improve the accuracy, the weighted average can be carried out according to the historical signal intensity determined by different trains in the same area, and a more accurate historical signal intensity is obtained. Meanwhile, a signal transmission quality thermodynamic diagram of the national railway network can be drawn according to historical signal intensities on different lines, so that target users can intuitively know the regional signal intensity of a relevant region.
It should be understood that, when the historical signal strength is calculated, abnormal historical data should be eliminated, and if an abnormality occurs in the position change rate, all data related to the abnormal position change rate at this time are deleted to ensure the accuracy of the calculation.
In some embodiments, when the number of video receiving ends is different, congestion conditions of a channel for data transmission between the video receiving ends and the server are also different, and therefore, in order to improve accuracy of calculating the signal strength, historical congestion conditions of the channel can be increased in the signal strength map. Meanwhile, when acquiring the regional signal strength, a pre-constructed signal strength map should be queried in combination with the regional information, the position change rate and the current channel congestion condition.
In summary, one or more technical solutions provided in the embodiments of the present invention at least have the following technical effects or advantages:
1. after receiving an instruction that a video receiving end requests to acquire video data, acquiring the regional signal intensity when the video receiving end reaches the next region after the preset time, and adjusting the transmission parameter of the video data to be transmitted in advance according to the regional signal intensity of the next region, so that the transmission parameter of the video data can be matched with the regional signal intensity of the next region, and the video data can be smoothly played on the video receiving end.
2. If the video data still cannot meet the requirement of smooth playing after the transmission priority of the I frame data in the video data is improved, the video frame rate and/or the video code rate of the video data are/is reduced, so that the video data can be further ensured to be smoothly played on a video receiving end.
3. The signal intensity of the region is predicted by combining historical data, and the prediction accuracy is improved.
Example two
Fig. 7 is a flowchart illustrating a video data processing method according to another embodiment of the disclosure. As shown in fig. 7, the video data processing method according to the embodiment of the present invention includes the following steps:
s701, sending an instruction for requesting to acquire video data to a server to trigger the server to acquire the area signal intensity when the video receiving end moves to the next area, and enabling the server to adjust the transmission parameters of the video data to be transmitted in advance according to the area signal intensity.
Specifically, when the video receiving end acquires the instruction for playing the video data, the video receiving end sends the instruction for requesting to acquire the video data to the server, so that the server is triggered to acquire the area signal intensity when the video receiving end moves to the next area, and the server adjusts the transmission parameters of the video data to be sent in advance according to the area signal intensity, so that the video receiving end can play smoothly.
S702, receiving the video data sent by the server.
Specifically, after the transmission parameters of the video data to be sent are adjusted in advance, the server sends the video data to the video receiving end, so that the video receiving end can receive and play the video data.
In summary, one or more technical solutions provided in the embodiments of the present invention at least have the following technical effects or advantages:
1. after receiving an instruction that a video receiving end requests to acquire video data, the server can be triggered to acquire the regional signal intensity when the video receiving end reaches the next region after the preset time, and the transmission parameter of the video data to be transmitted is adjusted in advance according to the regional signal intensity of the next region, so that the transmission parameter of the video data can be matched with the regional signal intensity of the next region, and the video data can be smoothly played on the video receiving end.
EXAMPLE III
In order to implement the first embodiment, the embodiment of the invention further provides a server.
Fig. 8 is a schematic structural diagram of a server in an embodiment of the present disclosure. As shown in fig. 8, the server includes:
a first receiving module 801, configured to receive an instruction that a video receiving end requests to acquire video data;
an obtaining module 802, configured to obtain a regional signal strength when a video receiving end reaches a next region after a preset time;
the adjusting module 803 is configured to adjust a transmission parameter of video data to be sent in advance according to the local signal strength, and send the video data to the video receiving end according to the transmission parameter.
Further, the adjusting module 803 is further configured to:
and the signal intensity of the identification area is smaller than the preset signal intensity, and the transmission priority of I frame data in the video data is improved.
Further, the adjusting module 803 is further configured to:
receiving the receiving time length of the received video data fed back by the video receiving end;
and recognizing that the receiving time length is greater than the preset receiving time length, and reducing the video frame rate and/or the video code rate of the video data.
Further, the adjusting module 803 is further configured to:
recognizing that the signal intensity of the area is greater than or equal to the preset signal intensity, and reducing the transmission priority of I frame data; and/or, increasing the video frame rate and/or video code rate of the video data.
Further, the obtaining module 802 is further configured to:
and receiving the position information sent by the video receiving end, determining the position change rate of the video receiving end according to the position information, and identifying that the position change rate is greater than a preset rate.
Further, the obtaining module 802 is further configured to:
acquiring a moving track of a video receiving end;
determining the area information of the next area according to the moving track;
and inquiring a pre-constructed signal intensity mapping chart according to the area information and the position change rate to obtain the area signal intensity, wherein the signal intensity mapping chart comprises the mapping relation among the area information, the position change rate and the area signal intensity.
Further, the obtaining module 802 is further configured to:
receiving historical delay data and/or historical packet loss rate of the video receiving end in the next area fed back by the video receiving end;
determining the historical signal intensity of the video receiving end in the next area according to the historical delay data and/or the historical packet loss rate;
acquiring the historical position change rate of a video receiving end in the next area;
and constructing a signal strength mapping chart according to the region information, the historical position change rate and the historical signal strength of the next region.
It should be understood that, the implementation principle and the technical effect of the server for executing the method in the first embodiment and the corresponding program module in the server are similar to those described in the above method, and the working process of the server may refer to the corresponding process in the method in the first embodiment, and is not described herein again.
In summary, one or more technical solutions provided in the embodiments of the present invention at least have the following technical effects or advantages:
1. after receiving an instruction that a video receiving end requests to acquire video data, acquiring the regional signal intensity when the video receiving end reaches the next region after the preset time, and adjusting the transmission parameter of the video data to be transmitted in advance according to the regional signal intensity of the next region, so that the transmission parameter of the video data can be matched with the regional signal intensity of the next region, and the video data can be smoothly played on the video receiving end.
2. If the video data still cannot meet the requirement of smooth playing after the transmission priority of the I frame data in the video data is improved, the video frame rate and/or the video code rate of the video data are/is reduced, so that the video data can be further ensured to be smoothly played on a video receiving end.
3. The signal intensity of the region is predicted by combining historical data, and the prediction accuracy is improved.
Example four
In order to implement the second embodiment, the embodiment of the present invention further provides a video receiving end.
Fig. 9 is a schematic structural diagram of a video receiving end according to an embodiment of the disclosure. As shown in fig. 9, the video receiving end includes:
a sending module 901, configured to send an instruction requesting to obtain video data to a server, so as to trigger the server to obtain the area signal strength when a video receiving end reaches a next area after a preset time, and enable the server to adjust a transmission parameter of the video data to be sent in advance according to the area signal strength;
and a second receiving module 902, configured to receive the video data sent by the server.
Further, the sending module 901 is further configured to:
and sending the position information of the video receiving end to the server, so that the server determines the position change rate of the video receiving end according to the position information, and the server recognizes that the position change rate is greater than a preset rate.
It should be understood that, the above-mentioned apparatus is used for executing the method in the above-mentioned second embodiment, and the implementation principle and technical effect of the apparatus are similar to those described in the above-mentioned method, and the working process of the apparatus may refer to the corresponding process in the method in the above-mentioned second embodiment, and is not described herein again.
In summary, one or more technical solutions provided in the embodiments of the present invention at least have the following technical effects or advantages: after receiving an instruction that a video receiving end requests to acquire video data, the server can be triggered to acquire the regional signal intensity when the video receiving end reaches the next region after the preset time, and the transmission parameter of the video data to be transmitted is adjusted in advance according to the regional signal intensity of the next region, so that the transmission parameter of the video data can be matched with the regional signal intensity of the next region, and the video data can be smoothly played on the video receiving end.
EXAMPLE five
In order to implement the foregoing embodiments, an embodiment of the present invention further provides an electronic device, as shown in fig. 10, where the electronic device includes a memory 1201, a processor 1202; the processor 1202 runs a program corresponding to the executable program code by reading the executable program code stored in the memory 1201, so as to implement the steps of the method in the first embodiment or the second embodiment.
EXAMPLE six
In order to implement the foregoing embodiments, the present invention further provides a computer-readable storage medium, on which a computer program is stored, and the computer program implements the steps of the method in the first embodiment or the second embodiment when being executed by a processor.
Those of skill would further appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, a software module executed by a processor, or a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (11)
1. A method of video data processing, the method comprising:
receiving an instruction of a video receiving end for requesting to acquire video data;
acquiring the regional signal intensity of the video receiving end reaching the next region after the preset time;
and adjusting the transmission parameters of the video data to be transmitted in advance according to the regional signal intensity, and transmitting the video data to the video receiving end according to the transmission parameters.
2. The method of claim 1, wherein the adjusting the transmission parameters of the video data according to the regional signal strength comprises:
and recognizing that the signal intensity of the area is smaller than the preset signal intensity, and improving the transmission priority of I frame data in the video data.
3. The method of claim 2, wherein the increasing the priority of transmission of I frame data in the video data comprises:
receiving the receiving time length of the received video data fed back by the video receiving end;
and recognizing that the receiving time length is greater than the preset receiving time length, and reducing the video frame rate and/or the video code rate of the video data.
4. The video data processing method according to claim 3, further comprising:
recognizing that the signal intensity of the area is greater than or equal to the preset signal intensity, and reducing the transmission priority of the I frame data; and/or increasing the video frame rate and/or video code rate of the video data.
5. The method according to any of claims 1-4, wherein before obtaining the area signal strength of the next area reached by the video receiving end after a preset time, the method further comprises:
and receiving the position information sent by the video receiving end, determining the position change rate of the video receiving end according to the position information, and identifying that the position change rate is greater than a preset rate.
6. The method of claim 5, wherein the obtaining the area signal strength of the video receiving end reaching the next area after a preset time comprises:
acquiring a moving track of the video receiving end;
determining the area information of the next area according to the moving track;
and inquiring a pre-constructed signal intensity mapping chart according to the area information and the position change rate to obtain the area signal intensity, wherein the signal intensity mapping chart comprises the mapping relation among the area information, the position change rate and the area signal intensity.
7. The method of claim 6, wherein said querying the pre-constructed signal strength map is preceded by:
receiving historical delay data and/or historical packet loss rate of the video receiving end in the next area, which are fed back by the video receiving end;
determining the historical signal intensity of the video receiving end in the next area according to the historical delay data and/or the historical packet loss rate;
acquiring the historical position change rate of the video receiving end in the next area;
and constructing the signal strength mapping map according to the area information of the next area, the historical position change rate and the historical signal strength.
8. A method of video data processing, the method comprising:
sending an instruction for requesting to acquire video data to a server to trigger the server to acquire the area signal intensity when a video receiving end moves to the next area, and enabling the server to adjust the transmission parameters of the video data to be sent in advance according to the area signal intensity;
and receiving the video data sent by the server.
9. The video data processing method of claim 8, further comprising:
and sending the position information of the video receiving end to a server, so that the server determines the position change rate of the video receiving end according to the position information, and the server recognizes that the position change rate is greater than a preset rate.
10. A server, characterized in that the server comprises:
the first receiving module is used for receiving an instruction of a video receiving end for requesting to acquire video data;
the acquisition module is used for acquiring the regional signal intensity of the video receiving end reaching the next region after the preset time;
and the adjusting module is used for adjusting the transmission parameters of the video data to be sent in advance according to the regional signal intensity and sending the video data to the video receiving end according to the transmission parameters.
11. A video receiving end, comprising:
the sending module is used for sending an instruction for requesting to acquire video data to a server so as to trigger the server to acquire the regional signal intensity of the video receiving end reaching the next region after the preset time, and the server is enabled to adjust the transmission parameters of the video data to be sent in advance according to the regional signal intensity;
and the second receiving module is used for receiving the video data sent by the server.
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