CN109286813B - Video communication quality detection method and device - Google Patents
Video communication quality detection method and device Download PDFInfo
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- CN109286813B CN109286813B CN201811352292.XA CN201811352292A CN109286813B CN 109286813 B CN109286813 B CN 109286813B CN 201811352292 A CN201811352292 A CN 201811352292A CN 109286813 B CN109286813 B CN 109286813B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
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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
- H04N21/47—End-user applications
- H04N21/478—Supplemental services, e.g. displaying phone caller identification, shopping application
- H04N21/4788—Supplemental services, e.g. displaying phone caller identification, shopping application communicating with other users, e.g. chatting
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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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
- H04N21/64723—Monitoring of network processes or resources, e.g. monitoring of network load
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
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Abstract
The embodiment of the invention provides a video communication quality detection method and a video communication quality detection device, aiming at a target video frame in a video image displayed by a receiving end, the system time in the receiving end when the receiving end displays the target video frame is obtained and used as first system time, the system time in the sending end when the sending end acquires the video frame corresponding to the target video frame is obtained and used as second system time, the time delay of the target video frame is determined according to the system time difference between the sending end and the receiving end, the first system time and the second system time, and the video communication quality between the sending end and the receiving end is determined according to communication quality detection parameters, wherein the communication quality detection parameters comprise the time delay of the target video frame. Based on the processing, the time delay of the video frame can be accurately determined to detect the video communication quality, the video communication quality is not detected only according to the result of the naked eye watching of the detection personnel, and the effectiveness of the video communication quality detection result can be improved.
Description
Technical Field
The present invention relates to the field of network technologies, and in particular, to a method and an apparatus for detecting video communication quality.
Background
With the rapid development of mobile internet technology, more and more users choose to use terminals (e.g., mobile phones, tablets) for video calls. The network between the terminals is unstable due to different network operators, large regional span of the terminals and other factors, and thus the video communication quality between the terminals is affected. The video communication quality between the terminals is detected, the problems existing in the current video communication can be determined, and the video communication quality can be further improved.
In the prior art, usually, a detector watches a video image acquired by a transmitting end and a video image displayed by a receiving end, and compares the watched video images to determine the video communication quality.
However, the inventor finds that the prior art has at least the following problems in the process of implementing the invention:
in the detection process, detection personnel determine the video communication quality according to the watched video images, and the detection result is often personal subjectivity and cannot effectively reflect the current video communication quality. Therefore, an effective video communication quality detection method is needed.
Disclosure of Invention
The embodiment of the invention aims to provide a video communication quality detection method and a video communication quality detection device, which can improve the effectiveness of a video communication quality detection result. The specific technical scheme is as follows:
in a first aspect, to achieve the above object, an embodiment of the present invention discloses a method for detecting video communication quality, where the method includes:
aiming at a target video frame in a video image displayed by a receiving end, acquiring system time in the receiving end when the receiving end displays the target video frame, and taking the system time in the receiving end as first system time;
acquiring system time in a sending end when the sending end acquires a video frame corresponding to the target video frame, and taking the system time in the sending end as second system time;
determining the time delay of the target video frame according to the system time difference between the sending end and the receiving end, the first system time and the second system time;
and determining the video communication quality between the sending end and the receiving end according to the communication quality detection parameters, wherein the communication quality detection parameters comprise the time delay of the target video frame.
Optionally, before determining the time delay of the target video frame according to the system time difference between the sending end and the receiving end, the first system time, and the second system time, the method further includes:
the method comprises the steps of obtaining system time in a sending end when the sending end sends a first data packet to a receiving end, and taking the system time in the sending end as third system time, wherein the first data packet is used for detecting system time difference between the sending end and the receiving end;
acquiring the system time in the receiving end when the receiving end receives the first data packet, and taking the system time in the receiving end as fourth system time;
acquiring system time in the receiving end when the receiving end sends a second data packet to the sending end, and taking the system time in the receiving end as fifth system time, wherein the second data packet is a data packet generated according to the first data packet and is used for detecting a system time difference between the sending end and the receiving end;
acquiring the system time in the sending end when the sending end receives the second data packet, and taking the system time in the sending end as sixth system time;
and determining the system time difference between the sending end and the receiving end according to the third system time, the fourth system time, the fifth system time and the sixth system time.
Optionally, the communication quality detection parameter further includes a frame loss rate of the current video communication;
before the determining the video communication quality between the sending end and the receiving end according to the communication quality detection parameter, the method further includes:
taking the serial number added by the sending end for each collected video frame as a first serial number;
and taking the serial number in each video frame displayed by the receiving end as a second serial number, and determining the frame loss rate of the video communication according to the first serial number and the second serial number.
Optionally, the communication quality detection parameter further includes a quality loss degree corresponding to the target video frame;
before the determining the video communication quality between the sending end and the receiving end according to the communication quality detection parameter, the method further includes:
taking the video frame which is acquired by the transmitting end and has the same sequence number as the target video frame as an original video frame;
and taking the peak signal-to-noise ratio of the target video frame and the original video frame as the image quality loss degree corresponding to the target video frame.
Optionally, the determining, according to the communication quality detection parameter, the video communication quality between the sending end and the receiving end includes:
taking the average value of the time delays of a preset number of video frames in the video image displayed by the receiving end as the integral time delay of the video communication;
and inquiring in a corresponding relation between a preset video communication quality grade and the whole time delay, and determining the video communication quality grade corresponding to the whole time delay of the video communication, wherein the video communication quality grade is used for representing different video communication qualities.
In a second aspect, to achieve the above object, an embodiment of the present invention discloses an apparatus for detecting video communication quality, including:
the receiving and sending module is used for acquiring the system time in the receiving end when the receiving end displays the target video frame aiming at the target video frame in the video image displayed by the receiving end, and taking the system time in the receiving end as the first system time; acquiring system time in a sending end when the sending end acquires a video frame corresponding to the target video frame, and taking the system time in the sending end as second system time;
the processing module is used for determining the time delay of the target video frame according to the system time difference between the sending end and the receiving end, the first system time and the second system time; and determining the video communication quality between the sending end and the receiving end according to the communication quality detection parameters, wherein the communication quality detection parameters comprise the time delay of the target video frame.
Optionally, the transceiver module is further configured to obtain a system time of the sending end when the sending end sends a first data packet to the receiving end, and use the system time of the sending end as a third system time, where the first data packet is used to detect a system time difference between the sending end and the receiving end; acquiring the system time in the receiving end when the receiving end receives the first data packet, and taking the system time in the receiving end as fourth system time; acquiring system time in the receiving end when the receiving end sends a second data packet to the sending end, and taking the system time in the receiving end as fifth system time, wherein the second data packet is a data packet generated according to the first data packet and is used for detecting a system time difference between the sending end and the receiving end; acquiring the system time in the sending end when the sending end receives the second data packet, and taking the system time in the sending end as sixth system time;
the processing module is further configured to determine a system time difference between the sending end and the receiving end according to the third system time, the fourth system time, the fifth system time, and the sixth system time.
Optionally, the communication quality detection parameter further includes a frame loss rate of the current video communication;
the processing module is further configured to use the sequence number added by the sending end for each acquired video frame as a first sequence number; and taking the serial number in each video frame displayed by the receiving end as a second serial number, and determining the frame loss rate of the video communication according to the first serial number and the second serial number.
Optionally, the communication quality detection parameter further includes a quality loss degree corresponding to the target video frame;
the processing module is further configured to use the video frame, which is acquired by the transmitting end and has the same sequence number as the target video frame, as an original video frame; and taking the peak signal-to-noise ratio of the target video frame and the original video frame as the image quality loss degree corresponding to the target video frame.
Optionally, the processing module is specifically configured to use an average value of time delays of a preset number of video frames in the video image displayed by the receiving end as an overall time delay of the video communication;
and inquiring in a corresponding relation between a preset video communication quality grade and the whole time delay, and determining the video communication quality grade corresponding to the whole time delay of the video communication, wherein the video communication quality grade is used for representing different video communication qualities.
In another aspect of the present invention, there is also provided an electronic device, including a processor, a communication interface, a memory and a communication bus, where the processor, the communication interface and the memory complete communication with each other through the communication bus;
a memory for storing a computer program;
and a processor for implementing any of the above-described video communication quality detection methods when executing the program stored in the memory.
In yet another aspect of the present invention, there is also provided a computer-readable storage medium having stored therein instructions, which when run on a computer, cause the computer to execute any one of the video communication quality detection methods described above.
In yet another aspect of the present invention, the present invention further provides a computer program product containing instructions, which when run on a computer, causes the computer to execute any one of the video communication quality detection methods described above.
The embodiment of the invention provides a video communication quality detection method and a video communication quality detection device, aiming at a target video frame in a video image displayed by a receiving end, the system time in the receiving end when the receiving end displays the target video frame is obtained and used as first system time, the system time in the sending end when the sending end acquires the video frame corresponding to the target video frame is obtained and used as second system time, the time delay of the target video frame is determined according to the system time difference between the sending end and the receiving end, the first system time and the second system time, and the video communication quality between the sending end and the receiving end is determined according to communication quality detection parameters, wherein the communication quality detection parameters comprise the time delay of the target video frame. Based on the processing, the time delay of the video frame can be accurately determined according to the system time difference between the sending end and the receiving end, the first system time and the second system time so as to detect the video communication quality, instead of only determining the video communication quality according to the result of the naked eye watching of a detector, and further the effectiveness of the video communication quality detection result can be improved.
Of course, not all of the advantages described above need to be achieved at the same time in the practice of any one product or method of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a scene diagram of video communication quality detection according to an embodiment of the present invention;
fig. 2 is a flowchart of a video communication quality detection method according to an embodiment of the present invention;
fig. 3 is a block diagram of a video communication quality detection apparatus according to an embodiment of the present invention;
fig. 4 is a structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention.
In the prior art, usually, a detector watches a video image acquired by a transmitting end and a video image displayed by a receiving end, and compares the watched video images to determine the video communication quality. The video communication quality is determined only according to the result of the naked eye observation of the detection personnel, and the detection result is often personally subjective and cannot effectively reflect the current video communication quality.
In view of the above, the present invention provides a video communication quality detection method, which can be applied to an electronic device. Referring to fig. 1, in a scene diagram of video communication quality detection provided by an embodiment of the present invention, an electronic device may be a device located in a video quality measurement center in fig. 1, and is configured to detect video communication quality, and the electronic device may communicate with a video sending end (hereinafter referred to as a sending end) and a video receiving end (hereinafter referred to as a receiving end) to obtain data recorded by the sending end and the receiving end in a video communication process.
The sending end can collect a plurality of video frames (namely image frames), and the plurality of video frames form a video image to be sent. Then, the transmitting end may encode each video frame and transmit the encoded video data to the receiving end through the network.
Correspondingly, after receiving the encoded video data, the receiving end decodes the video data to obtain video frames (i.e., image frames), and displays each video frame.
Based on the method of this embodiment, for a certain video frame (i.e., a target video frame) in a video image displayed by a receiving end, the electronic device may obtain a system time (i.e., a display time) in the receiving end when the receiving end displays the target video frame, and use the system time as a first system time. Then, the electronic device may obtain system time (i.e., acquisition time) in the sending end when the sending end acquires the video frame corresponding to the target video frame, and use the system time as second system time. The electronic device may determine the time delay of the target video frame according to the system time difference between the transmitting end and the receiving end, the first system time, and the second system time, and determine the video communication quality between the transmitting end and the receiving end according to the communication quality detection parameter including the time delay of the target video frame.
The electronic device can accurately determine the time delay of the target video frame according to the system time difference between the sending end and the receiving end, namely NTP Delta (Network time protocol Delta), the first system time and the second system time so as to detect the video communication quality, but not only according to the result of the naked eye watching of a detector, so that the video communication quality is determined, and the effectiveness of the video communication quality detection result can be improved.
In addition, the electronic device may further obtain a serial number added by the sending end for the acquired video frame and a serial number in the video frame displayed by the receiving end, so as to perform other processing, which will be specifically described in detail in the following embodiments.
The present invention will be described in detail with reference to specific examples.
Referring to fig. 2, fig. 2 is a flowchart of a video communication quality detection method according to an embodiment of the present invention, where the method may include the following steps:
s201: aiming at a target video frame in a video image displayed by a receiving end, the system time in the receiving end when the receiving end displays the target video frame is obtained, and the system time in the receiving end is used as first system time.
The receiving end can be an electronic device such as a mobile phone and a computer. The target video frame may be any video frame in the video image displayed by the receiving end.
In implementation, the receiving end may receive the encoded video data and decode the video data to obtain a video frame, and then the receiving end may display the video frame. When displaying the video frame, the receiving end can record the current system time and store the current system time locally.
Accordingly, the electronic device can obtain the system time (i.e., the first system time) when the target video frame is displayed by the receiving end from the receiving end.
S202: and acquiring the system time in the sending end when the sending end acquires the video frame corresponding to the target video frame, and taking the system time in the sending end as the second system time.
The sending end can be an electronic device such as a mobile phone and a computer.
In implementation, the sending end may collect a plurality of video frames, decode each video frame to obtain encoded video data, and then send the encoded video data to the receiving end. When each video frame is collected, the sending end can record the current system time and store the current system time locally.
Accordingly, the electronic device may obtain the system time (i.e., the second system time) when the video frame corresponding to the target video frame is acquired from the sending end. When the sending end collects each video frame, an identifier can be added to the video frame, and it can be known that the identifier carried by the video frame corresponding to the target video frame is the same as the identifier carried by the target video frame.
S203: and determining the time delay of the target video frame according to the system time difference between the sending end and the receiving end, the first system time and the second system time.
Since the receiving end and the transmitting end are two different electronic devices, the system time in the receiving end and the transmitting end may not be consistent. For example, if the system time at the receiving end is 7 o 'clock 30 min 20 sec at the same time, and the system time at the transmitting end may be 7 o' clock 30 min 22 sec, the system time difference between the transmitting end and the receiving end is 2 sec.
The first system time is the system time in the receiving end, the second system time is the system time in the sending end, and if the time delay of the video frame is determined directly according to the first system time and the second system time, the accuracy of the video communication quality detection result is reduced. Therefore, in order to improve the accuracy of the video communication quality detection result, the electronic device may further remove the system time difference between the sending end and the receiving end when calculating the time delay of the video frame.
The electronic device may determine a system time difference between the sending end and the receiving end in the video communication process, and specifically, a method for determining the system time difference by the electronic device will be described in detail in the following embodiments.
In implementation, the electronic device may obtain a first system time and a second system time corresponding to the target video frame, and calculate a time delay of the target video frame according to a system time difference between the sending end and the receiving end.
For example, the first system time corresponding to the target video frame is T1, the second system time corresponding to the target video frame is T2, and the system time difference between the transmitting end and the receiving end is Ts, the electronic device may determine that the delay of the target video frame is (T1-T2) -Ts.
S204: and determining the video communication quality between the sending end and the receiving end according to the communication quality detection parameters.
The communication quality detection parameter may include a time delay of the target video frame.
In implementation, the electronic device may determine the video communication quality between the sending end and the receiving end according to the communication quality detection parameter including the time delay of the target video frame.
For example, the electronic device may determine that the video communication quality between the sending end and the receiving end is poor when the delay of the target video frame is greater than a first preset delay threshold. The first predetermined delay threshold may be set empirically by a technician.
Alternatively, the electronic device may obtain the time delay of a plurality of video frames including the target video frame to determine the video communication quality between the transmitting end and the receiving end. For example, the electronic device may determine that the quality of video communication between the sending end and the receiving end is poor when the sum of the time delays of the plurality of video frames is greater than the second preset time delay threshold, or the electronic device may determine that the quality of video communication between the sending end and the receiving end is poor when the average of the time delays of the plurality of video frames is greater than the third preset time delay threshold. The second preset delay threshold and the third preset delay threshold may be set by a technician according to experience.
Optionally, the electronic device may determine the video communication quality between the sending end and the receiving end according to an average value of the time delays of the plurality of video frames. Specifically, S204 may include the following steps:
step one, taking the average value of the time delays of a preset number of video frames in a video image displayed by a receiving end as the whole time delay of the video communication.
The preset number may be set by a technician according to experience, for example, the preset number may be the total number of all video frames in the video image displayed by the receiving end, or the preset number may be one half of the total number of all video frames in the video image displayed by the receiving end.
In implementation, the electronic device may obtain the time delays of a preset number of video frames in a video image displayed by the receiving end, and then, the electronic device may calculate an average value of the time delays of the preset number of video frames (i.e., the overall time delay of the current video communication).
And step two, inquiring in the corresponding relation between the preset video communication quality grade and the whole time delay, and determining the video communication quality grade corresponding to the whole time delay of the video communication.
The video communication quality grade is used for representing different video communication qualities, and the corresponding relation between the preset video communication quality grade and the whole time delay can be locally stored in the electronic equipment.
In implementation, after determining the overall delay of the current video communication, the electronic device may query a preset corresponding relationship between the video communication quality level and the overall delay, and determine a video communication quality level (which may be referred to as a target level) corresponding to the overall delay of the current video communication.
In addition, after the electronic device determines the target level, the electronic device may further display a detection result, where the detection result may include an identifier of the target level and an overall time delay of the video communication.
The corresponding relationship between the preset video communication quality level and the overall delay can be seen in table (1).
Watch (1)
Where Level1-Level5 represent different video communication quality levels, for example, Level1-Level5 may be "better", "good", "general", "poor", respectively. The present embodiment is described by taking table (1) as an example, and in actual operation, the correspondence between the preset video communication quality level and the overall delay is not limited to this.
Optionally, before calculating the time delay of the target video frame, the electronic device may further calculate a system time difference between the sending end and the receiving end. Accordingly, before S203, the method may further include the steps of:
step one, system time in a sending end is obtained when the sending end sends a first data packet to a receiving end, and the system time in the sending end is used as third system time.
The first data packet is used for detecting the system time difference between the sending end and the receiving end.
In implementation, in the process of sending the collected video frame to the receiving end, the sending end may also send a data packet (i.e., a first data packet) to the receiving end through a communication channel of video communication, and record a system time (i.e., a third system time) in the sending end when sending the first data packet to the receiving end. Accordingly, the electronic device may obtain a third system time.
And step two, acquiring the system time in the receiving end when the receiving end receives the first data packet, and taking the system time in the receiving end as the fourth system time.
In an implementation, the receiving end may receive the first data packet sent by the sending end, and record the system time (i.e., the fourth system time) in the receiving end when the first data packet is received. Accordingly, the electronic device may obtain a fourth system time.
And step three, acquiring the system time in the receiving end when the receiving end sends the second data packet to the sending end, and taking the system time in the receiving end as the fifth system time.
The second data packet is generated according to the first data packet, and the second data packet is used for detecting the system time difference between the sending end and the receiving end.
In an implementation, after receiving the first data packet, the receiving end may generate another data packet (i.e., a second data packet), send the second data packet to the sending end, and record the system time (i.e., a fifth system time) in the receiving end when sending the second data packet to the sending end. Accordingly, the electronic device may obtain a fifth system time.
And step four, acquiring the system time in the sending end when the sending end receives the second data packet, and taking the system time in the sending end as the sixth system time.
In implementation, the sender may receive the second data packet sent by the receiver, and record the system time (i.e., the sixth system time) in the sender when receiving the second data packet. Accordingly, the electronic device may obtain a sixth system time.
And step five, determining the system time difference between the sending end and the receiving end according to the third system time, the fourth system time, the fifth system time and the sixth system time.
In an implementation, the electronic device may determine a system time difference between the transmitting end and the receiving end according to the third system time, the fourth system time, the fifth system time, and the sixth system time.
For example, the electronic device may calculate the round trip delay Tr of transmitting the data packet according to the third system time T3, the fourth system time T4, the fifth system time T5, and the sixth system time T6 (T6-T3) - (T5-T4). Then, the electronic device may calculate a system time difference Ts between the transmitting end and the receiving end as (T4-T3) -Tr/2 as (3T4-3T3+ T6-T5)/2.
In addition, in order to improve the accuracy of the system time difference, the sending end may send a plurality of first data packets to the receiving end, and correspondingly, the receiving end may also send a plurality of second data packets to the sending end, so that the electronic device may obtain a plurality of Ts, and then the electronic device may determine an average value of the plurality of Ts as the system time difference between the sending end and the receiving end in the current video communication process.
Optionally, the electronic device may further detect the video communication quality by combining the frame loss rate of the video communication. Specifically, the communication quality detection parameter may further include a frame loss rate of the current video communication, and before S204, the method may further include the following steps:
step one, a sequence number added by a sending end for each collected video frame is used as a first sequence number.
In an implementation, when each video frame is acquired, the sending end may add a sequence number (i.e., a first sequence number, that is, the sequence number in fig. 1) to the video frame, and the sending end may also store the video frame to which the first sequence number is added locally. Accordingly, the electronic device may obtain the first serial number.
For example, the sending end may add sequence number 1 to the first captured video frame, add sequence number 2 to the second captured video frame, add sequence number 3 to the third captured video frame, and so on until adding sequence number N to the nth captured video frame. Or, the sending end may also add different random values to the acquired video frames respectively. In this embodiment, the manner in which the sending end adds the sequence number to the video frame is not limited.
And step two, taking the serial number in each video frame displayed by the receiving end as a second serial number, and determining the frame loss rate of the video communication according to the first serial number and the second serial number.
In implementation, the electronic device may obtain a sequence number (i.e., a second sequence number) carried in each video frame displayed by the receiving end, and then the electronic device may compare the first sequence number with the second sequence number to determine the number of sequence numbers that exist in the first sequence number and do not exist in the second sequence number, which is used as the number of lost video frames in the video communication process.
For example, the first sequence number includes: 3. 7, 9, 10, 11, 23, 25, 30, the second number comprising: 3. 9, 11, 23, 25, 30. The electronic device may determine that there is a first sequence number and no second sequence number is 7, 10, and may determine that the number of lost video frames is 2.
Then, the electronic device may determine the frame loss rate of the current video communication according to the number of the lost video frames and the number of the first sequence numbers.
For the above example, the first sequence number includes: 3. 7, 9, 10, 11, 23, 25, and 30, that is, the number of the first sequence numbers is 8, and the number of the lost video frames is 2, the electronic device may determine that the frame loss rate of the current video communication is 2/8-25%.
Accordingly, S204 may include the steps of: and determining the video communication quality between the sending end and the receiving end according to the frame loss rate and the time delay of the preset number of video frames.
In implementation, the electronic device may obtain the time delay of a preset number of video frames and the frame loss rate of the video communication, and then, the electronic device may determine the video communication quality between the sending end and the receiving end according to the time delay and the frame loss rate of the preset number of video frames.
For example, the electronic device may determine the overall time delay T of the current video communication according to the time delay of a preset number of video frames displayed by the receiving end, and then calculate the detection result data according to the overall time delay T and the frame loss rate L. The calculation formula of the detection result data may refer to formula (1).
G＝D1×T+D2×L (1)
Wherein G represents the detection result data, D1 represents the weight corresponding to the preset overall delay T, and D2 represents the weight corresponding to the preset frame loss rate L.
The electronic device can obtain the detection result data of the video communication according to the formula (1), and then the electronic device can determine the video communication quality between the sending end and the receiving end according to the corresponding relation between the preset detection result data and the video communication quality grade. The corresponding relationship between the preset detection result data and the video communication quality level can be referred to table (2).
Watch (2)
| Video communication quality level | Detection result data G |
| Level1 | G≤G1 |
| Level2 | G1＜G≤G2 |
| Level3 | G2＜G≤G3 |
| Level4 | G3＜G≤G4 |
| Level5 | G4＜G |
Where Level1-Level5 represent different video communication quality levels, for example, Level1-Level5 may be "better", "good", "general", "poor", respectively. G1-G4 respectively represent different detection result data thresholds, and the specific values of G1-G4 can be set by a skilled person according to experience. The present embodiment is described by taking table (2) as an example, and the correspondence relationship between the preset detection result data and the video communication quality level is not limited to this in actual operation.
Optionally, the electronic device may further detect the video communication quality in combination with the image quality loss degree of the video communication. Specifically, the communication quality detection parameter may further include a picture quality loss degree corresponding to the target video frame, and before S204, the method may further include the following steps:
taking the video frame which is acquired by a transmitting end and has the same sequence number as the target video frame as an original video frame; and taking the peak signal-to-noise ratio of the target video frame and the original video frame as the image quality loss degree corresponding to the target video frame.
In implementation, the electronic device may acquire a video frame (i.e., an original video frame) with the same sequence number as that of the target video frame, which is acquired by the transmitting end. Then, the electronic device may calculate a peak signal-to-noise ratio of the target video frame and the original video frame as a picture quality loss degree corresponding to the target video frame.
Specifically, the electronic device may calculate the image quality loss degree according to the formula (2) and the formula (3).
Where MSE represents the mean square error between the original video frame and the target video frame, H represents the height of the video frame, and W represents the width of the video frame. X (i, j) represents the pixel value of the pixel with the coordinate (i, j) in the target video frame, and Y (i, j) represents the pixel value of the pixel with the coordinate (i, j) in the original video frame. PSNR (Peak Signal to Noise Ratio) represents the image quality loss of the target video frame relative to the original video frame, the higher PSNR represents the smaller image quality loss, and n represents the number of bits per pixel, which may be generally 8, i.e., a pixel gray scale number of 256.
Accordingly, S204 may include the steps of: and determining the video communication quality between the sending end and the receiving end according to the frame loss rate, the time delay of the preset number of video frames and the image quality loss degree.
In implementation, the electronic device may calculate an average value of image quality loss degrees corresponding to a preset number of video frames displayed by the receiving end, as an overall image quality loss degree of the current video communication.
The electronic equipment can acquire the time delay of a preset number of video frames, the frame loss rate of the video communication and the overall image quality loss degree of the video communication, and then the electronic equipment can determine the video communication quality between the sending end and the receiving end according to the time delay of the preset number of video frames, the frame loss rate of the video communication and the overall image quality loss degree of the video communication.
For example, the electronic device may determine the overall time delay T of the current video communication according to the time delays of a preset number of video frames, and then calculate the detection result data according to the overall time delay T, the frame loss rate L, and the overall image quality loss P. The calculation formula of the detection result data may refer to formula (4).
G＝D1×T+D2×L+D3×P (4)
Wherein G represents the detection result data, D1 represents the weight corresponding to the preset overall delay T, D2 represents the weight corresponding to the preset frame loss rate L, and D3 represents the weight corresponding to the preset overall image quality loss P.
The electronic device can obtain the detection result data of the video communication according to the formula (4), and then the electronic device can determine the video communication quality between the sending end and the receiving end according to the corresponding relation between the preset detection result data and the video communication quality grade. At this time, the corresponding relationship between the preset detection result data and the video communication quality level can be referred to table (3).
Watch (3)
| Video communication quality level | Detection result data G |
| Level1 | G≤G5 |
| Level2 | G5＜G≤G6 |
| Level3 | G6＜G≤G7 |
| Level4 | G7＜G≤G8 |
| Level5 | G8＜G |
Where Level1-Level5 represent different video communication quality levels, for example, Level1-Level5 may be "better", "good", "general", "poor", respectively. G5-G8 respectively represent different detection result data thresholds, and the specific values of G5-G8 can be set by a skilled person according to experience. The present embodiment is described by taking table (3) as an example, and the correspondence relationship between the preset detection result data and the video communication quality level is not limited to this in actual operation.
As can be seen, according to the video communication quality detection method provided by the embodiment of the present invention, for a target video frame in a video image displayed by a receiving end, a system time in the receiving end when the receiving end displays the target video frame is obtained as a first system time, a system time in the transmitting end when the transmitting end acquires a video frame corresponding to the target video frame is obtained as a second system time, a time delay of the target video frame is determined according to a system time difference between the transmitting end and the receiving end, the first system time, and the second system time, and a video communication quality between the transmitting end and the receiving end is determined according to a communication quality detection parameter, wherein the communication quality detection parameter includes the time delay of the target video frame. Based on the processing, the time delay of the video frame can be accurately determined according to the system time difference between the sending end and the receiving end, the first system time and the second system time so as to detect the video communication quality, instead of only determining the video communication quality according to the result of the naked eye watching of a detector, and further the effectiveness of the video communication quality detection result can be improved.
Corresponding to the embodiment of the method in fig. 2, referring to fig. 3, fig. 3 is a block diagram of an apparatus for detecting video communication quality according to an embodiment of the present invention, where the apparatus may include:
a transceiving module 301, configured to, for a target video frame in a video image displayed by a receiving end, acquire a system time in the receiving end when the receiving end displays the target video frame, and use the system time in the receiving end as a first system time; acquiring system time in a sending end when the sending end acquires a video frame corresponding to the target video frame, and taking the system time in the sending end as second system time;
a processing module 302, configured to determine a time delay of the target video frame according to a system time difference between the sending end and the receiving end, the first system time, and the second system time; and determining the video communication quality between the sending end and the receiving end according to the communication quality detection parameters, wherein the communication quality detection parameters comprise the time delay of the target video frame.
Optionally, the transceiver module 301 is further configured to obtain a system time in the sending end when the sending end sends a first data packet to the receiving end, and use the system time in the sending end as a third system time, where the first data packet is used to detect a system time difference between the sending end and the receiving end; acquiring the system time in the receiving end when the receiving end receives the first data packet, and taking the system time in the receiving end as fourth system time; acquiring system time in the receiving end when the receiving end sends a second data packet to the sending end, and taking the system time in the receiving end as fifth system time, wherein the second data packet is a data packet generated according to the first data packet and is used for detecting a system time difference between the sending end and the receiving end; acquiring the system time in the sending end when the sending end receives the second data packet, and taking the system time in the sending end as sixth system time;
the processing module 302 is further configured to determine a system time difference between the sending end and the receiving end according to the third system time, the fourth system time, the fifth system time, and the sixth system time.
Optionally, the communication quality detection parameter further includes a frame loss rate of the current video communication;
the processing module 302 is further configured to use a sequence number added by the sending end for each acquired video frame as a first sequence number; and taking the serial number in each video frame displayed by the receiving end as a second serial number, and determining the frame loss rate of the video communication according to the first serial number and the second serial number.
Optionally, the communication quality detection parameter further includes a quality loss degree corresponding to the target video frame;
the processing module 302 is further configured to use the video frame, which is acquired by the transmitting end and has the same sequence number as the target video frame, as an original video frame; and taking the peak signal-to-noise ratio of the target video frame and the original video frame as the image quality loss degree corresponding to the target video frame.
Optionally, the processing module 302 is specifically configured to use an average value of time delays of a preset number of video frames in the video image displayed by the receiving end as an overall time delay of the current video communication;
and inquiring in a corresponding relation between a preset video communication quality grade and the whole time delay, and determining the video communication quality grade corresponding to the whole time delay of the video communication, wherein the video communication quality grade is used for representing different video communication qualities.
As can be seen, according to the video communication quality detection apparatus provided in the embodiments of the present invention, for a target video frame in a video image displayed by a receiving end, a system time in the receiving end when the receiving end displays the target video frame is obtained, where the system time is used as a first system time, a system time in the transmitting end when the transmitting end acquires a video frame corresponding to the target video frame is obtained, the system time is used as a second system time, a time delay of the target video frame is determined according to a system time difference between the transmitting end and the receiving end, the first system time, and the second system time, and a video communication quality between the transmitting end and the receiving end is determined according to a communication quality detection parameter, where the communication quality detection parameter includes the time delay of the target video frame. Based on the processing, the time delay of the video frame can be accurately determined according to the system time difference between the sending end and the receiving end, the first system time and the second system time so as to detect the video communication quality, instead of only determining the video communication quality according to the result of the naked eye watching of a detector, and further the effectiveness of the video communication quality detection result can be improved.
An embodiment of the present invention further provides an electronic device, as shown in fig. 4, including a processor 401, a communication interface 402, a memory 403, and a communication bus 404, where the processor 401, the communication interface 402, and the memory 403 complete mutual communication through the communication bus 404,
a memory 403 for storing a computer program;
the processor 401 is configured to implement the video communication quality detection method according to the embodiment of the present invention when executing the program stored in the memory 403.
Specifically, the video communication quality detection method includes:
aiming at a target video frame in a video image displayed by a receiving end, acquiring system time in the receiving end when the receiving end displays the target video frame, and taking the system time in the receiving end as first system time;
acquiring system time in a sending end when the sending end acquires a video frame corresponding to the target video frame, and taking the system time in the sending end as second system time;
determining the time delay of the target video frame according to the system time difference between the sending end and the receiving end, the first system time and the second system time;
and determining the video communication quality between the sending end and the receiving end according to the communication quality detection parameters, wherein the communication quality detection parameters comprise the time delay of the target video frame.
The communication bus mentioned in the electronic device may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus.
The communication interface is used for communication between the electronic equipment and other equipment.
The Memory may include a Random Access Memory (RAM) or a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. Optionally, the memory may also be at least one memory device located remotely from the processor.
The Processor may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; the device can also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, or a discrete hardware component.
According to the electronic equipment provided by the embodiment of the invention, the time delay of the video frame can be accurately determined according to the system time difference between the sending end and the receiving end, the first system time and the second system time so as to detect the video communication quality, instead of detecting the video communication quality only according to the result of the naked eye observation of a detector, and the validity of the video communication quality detection result can be improved.
The embodiment of the present invention further provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are run on a computer, the computer is enabled to execute the video communication quality detection method provided by the embodiment of the present invention.
Specifically, the video communication quality detection method includes:
aiming at a target video frame in a video image displayed by a receiving end, acquiring system time in the receiving end when the receiving end displays the target video frame, and taking the system time in the receiving end as first system time;
acquiring system time in a sending end when the sending end acquires a video frame corresponding to the target video frame, and taking the system time in the sending end as second system time;
determining the time delay of the target video frame according to the system time difference between the sending end and the receiving end, the first system time and the second system time;
and determining the video communication quality between the sending end and the receiving end according to the communication quality detection parameters, wherein the communication quality detection parameters comprise the time delay of the target video frame.
It should be noted that other implementation manners of the video communication quality detection method are the same as those of the foregoing method embodiment, and are not described herein again.
By operating the instructions stored in the computer-readable storage medium provided by the embodiment of the invention, the time delay of the video frame can be accurately determined according to the system time difference between the sending end and the receiving end, the first system time and the second system time so as to detect the video communication quality, rather than only according to the result of the naked eye watching of a detector, the video communication quality is detected, and the validity of the video communication quality detection result can be improved.
Embodiments of the present invention further provide a computer program product containing instructions, which when run on a computer, cause the computer to execute the video communication quality detection method provided by embodiments of the present invention.
Specifically, the video communication quality detection method includes:
aiming at a target video frame in a video image displayed by a receiving end, acquiring system time in the receiving end when the receiving end displays the target video frame, and taking the system time in the receiving end as first system time;
acquiring system time in a sending end when the sending end acquires a video frame corresponding to the target video frame, and taking the system time in the sending end as second system time;
determining the time delay of the target video frame according to the system time difference between the sending end and the receiving end, the first system time and the second system time;
and determining the video communication quality between the sending end and the receiving end according to the communication quality detection parameters, wherein the communication quality detection parameters comprise the time delay of the target video frame.
It should be noted that other implementation manners of the video communication quality detection method are the same as those of the foregoing method embodiment, and are not described herein again.
By operating the computer program product provided by the embodiment of the invention, the time delay of the video frame can be accurately determined according to the system time difference between the sending end and the receiving end, the first system time and the second system time so as to detect the video communication quality, rather than only according to the result of the naked eye watching of a detector, the video communication quality is detected, and the validity of the video communication quality detection result can be improved.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the apparatus, the electronic device, the computer-readable storage medium, and the computer program product embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and for the relevant points, reference may be made to the partial description of the method embodiments.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (9)
1. A method for detecting video communication quality, the method comprising:
aiming at a target video frame in a video image displayed by a receiving end, acquiring system time in the receiving end when the receiving end displays the target video frame, and taking the system time in the receiving end as first system time;
acquiring system time in a sending end when the sending end acquires a video frame corresponding to the target video frame, and taking the system time in the sending end as second system time;
determining the time delay of the target video frame according to the system time difference between the sending end and the receiving end, the first system time and the second system time;
determining the video communication quality between the sending end and the receiving end according to communication quality detection parameters, wherein the communication quality detection parameters comprise the time delay of the target video frame;
before the determining the time delay of the target video frame according to the system time difference between the sending end and the receiving end, the first system time and the second system time, the method further includes:
the method comprises the steps of obtaining system time in a sending end when the sending end sends a first data packet to a receiving end, and taking the system time in the sending end as third system time, wherein the first data packet is used for detecting system time difference between the sending end and the receiving end;
acquiring the system time in the receiving end when the receiving end receives the first data packet, and taking the system time in the receiving end as fourth system time;
acquiring system time in the receiving end when the receiving end sends a second data packet to the sending end, and taking the system time in the receiving end as fifth system time, wherein the second data packet is a data packet generated according to the first data packet and is used for detecting a system time difference between the sending end and the receiving end;
acquiring the system time in the sending end when the sending end receives the second data packet, and taking the system time in the sending end as sixth system time;
determining a system time difference between the sending end and the receiving end according to the third system time, the fourth system time, the fifth system time and the sixth system time;
determining a system time difference between the transmitting end and the receiving end according to the third system time, the fourth system time, the fifth system time and the sixth system time, including:
calculating the round trip delay of sending data packets between the sending end and the receiving end according to the third system time, the fourth system time, the fifth system time, the sixth system time and a first formula;
wherein the first formula is Tr ═ (T6-T3) - (T5-T4);
t3 represents the third system time, T4 represents the fourth system time, T5 represents the fifth system time, T6 represents the sixth system time, Tr represents the round trip delay;
calculating the system time difference between the sending end and the receiving end according to the third system time, the fourth system time, the round trip delay and a second formula;
wherein the second formula is Ts ═ (T4-T3) -Tr/2;
ts represents the system time difference.
2. The method of claim 1, wherein the communication quality detection parameters further include a frame loss rate of the current video communication;
before the determining the video communication quality between the sending end and the receiving end according to the communication quality detection parameter, the method further includes:
taking the serial number added by the sending end for each collected video frame as a first serial number;
and taking the serial number in each video frame displayed by the receiving end as a second serial number, and determining the frame loss rate of the video communication according to the first serial number and the second serial number.
3. The method according to claim 2, wherein the communication quality detection parameters further include a picture quality loss corresponding to the target video frame;
before the determining the video communication quality between the sending end and the receiving end according to the communication quality detection parameter, the method further includes:
taking the video frame which is acquired by the transmitting end and has the same sequence number as the target video frame as an original video frame;
and taking the peak signal-to-noise ratio of the target video frame and the original video frame as the image quality loss degree corresponding to the target video frame.
4. The method of claim 1, wherein the determining the video communication quality between the transmitting end and the receiving end according to the communication quality detection parameter comprises:
taking the average value of the time delays of a preset number of video frames in the video image displayed by the receiving end as the integral time delay of the video communication;
and inquiring in a corresponding relation between a preset video communication quality grade and the whole time delay, and determining the video communication quality grade corresponding to the whole time delay of the video communication, wherein the video communication quality grade is used for representing different video communication qualities.
5. An apparatus for detecting video communication quality, the apparatus comprising:
the receiving and sending module is used for acquiring the system time in the receiving end when the receiving end displays the target video frame aiming at the target video frame in the video image displayed by the receiving end, and taking the system time in the receiving end as the first system time; acquiring system time in a sending end when the sending end acquires a video frame corresponding to the target video frame, and taking the system time in the sending end as second system time;
the processing module is used for determining the time delay of the target video frame according to the system time difference between the sending end and the receiving end, the first system time and the second system time; determining the video communication quality between the sending end and the receiving end according to communication quality detection parameters, wherein the communication quality detection parameters comprise the time delay of the target video frame;
the transceiver module is further configured to acquire system time in the sending end when the sending end sends a first data packet to the receiving end, and use the system time in the sending end as third system time, where the first data packet is used to detect a system time difference between the sending end and the receiving end; acquiring the system time in the receiving end when the receiving end receives the first data packet, and taking the system time in the receiving end as fourth system time; acquiring system time in the receiving end when the receiving end sends a second data packet to the sending end, and taking the system time in the receiving end as fifth system time, wherein the second data packet is a data packet generated according to the first data packet and is used for detecting a system time difference between the sending end and the receiving end; acquiring the system time in the sending end when the sending end receives the second data packet, and taking the system time in the sending end as sixth system time;
the processing module is further configured to determine a system time difference between the sending end and the receiving end according to the third system time, the fourth system time, the fifth system time, and the sixth system time;
the processing module is specifically configured to calculate a round-trip delay of sending a data packet between the sending end and the receiving end according to the third system time, the fourth system time, the fifth system time, the sixth system time, and a first formula;
wherein the first formula is Tr ═ (T6-T3) - (T5-T4);
t3 represents the third system time, T4 represents the fourth system time, T5 represents the fifth system time, T6 represents the sixth system time, Tr represents the round trip delay;
calculating the system time difference between the sending end and the receiving end according to the third system time, the fourth system time, the round trip delay and a second formula;
wherein the second formula is Ts ═ (T4-T3) -Tr/2;
ts represents the system time difference.
6. The apparatus of claim 5, wherein the communication quality detection parameter further comprises a frame loss rate of the current video communication;
the processing module is further configured to use the sequence number added by the sending end for each acquired video frame as a first sequence number; and taking the serial number in each video frame displayed by the receiving end as a second serial number, and determining the frame loss rate of the video communication according to the first serial number and the second serial number.
7. The apparatus according to claim 6, wherein the communication quality detection parameter further comprises a picture quality loss corresponding to the target video frame;
the processing module is further configured to use the video frame, which is acquired by the transmitting end and has the same sequence number as the target video frame, as an original video frame; and taking the peak signal-to-noise ratio of the target video frame and the original video frame as the image quality loss degree corresponding to the target video frame.
8. The apparatus according to claim 5, wherein the processing module is specifically configured to use an average value of time delays of a preset number of video frames in the video image displayed by the receiving end as an overall time delay of the current video communication;
and inquiring in a corresponding relation between a preset video communication quality grade and the whole time delay, and determining the video communication quality grade corresponding to the whole time delay of the video communication, wherein the video communication quality grade is used for representing different video communication qualities.
9. An electronic device, comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus;
the memory is used for storing a computer program;
the processor, when executing the program stored in the memory, implementing the method steps of any of claims 1-4.
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