CN114422774A - Testing method for datamation of smoothness of video streaming client - Google Patents
Testing method for datamation of smoothness of video streaming client Download PDFInfo
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- CN114422774A CN114422774A CN202210101774.8A CN202210101774A CN114422774A CN 114422774 A CN114422774 A CN 114422774A CN 202210101774 A CN202210101774 A CN 202210101774A CN 114422774 A CN114422774 A CN 114422774A
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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
- H04N17/004—Diagnosis, testing or measuring for television systems or their details for digital television systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10016—Video; Image sequence
Abstract
The invention discloses a method for testing the smoothness of a video streaming client. The invention detects the position where the scale passes in the picture in real time and in high frequency on the surface played by the client, namely, continuously color-taking is carried out at the designated position, the designated position is an area where the scale passes, the time point of taking the scale color is recorded, and the interval and variance of each time are calculated. The variance can accurately reflect the fluency of the video, and the smaller the variance is, the more uniform the interval between frames is, and the fluency of the video is good; the larger the variance is, the more uneven the interval between frames is, and the video fluency is not good. In addition, the smoothness of the streaming video is displayed in a data mode, so that the testing and comparison are facilitated.
Description
Technical Field
The invention relates to the technical field of video streaming testing, in particular to a testing method for datamation of smoothness of a video streaming client.
Background
In order to test the fluency of network videos, the video quality evaluation method and device (CN112995652A) describe a method for testing the fluency of pictures in the method, but the fluency is mainly focused on the aspects of Kanton; no test is made as to whether the interval of each picture frame (frame) is uniform, and if not, a situation in which the smoothness is reduced is also felt on the video picture. Furthermore, the current methods for video streaming fluency mainly focus on manual testing, no method capable of being digitalized is available for description, whether a picture is fluent or not is described, human eye testing has large errors according to differences of human bodies, and differences of different scene streaming cannot be effectively measured.
Accordingly, the prior art is deficient and needs improvement.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the method for testing the smoothness of the video streaming client is provided, whether the intervals between the picture frames are uniform or not can be accurately tested, the intervals are embodied in a datamation mode, and the test is convenient.
The technical scheme of the invention is as follows: a method for testing smoothness of a video streaming client is provided, which comprises the following steps.
S1: two computers connected with a network are prepared, one is a service end, and the other is a client end.
S2: the server plays the measurement video, and encodes and pushes the played picture to the client in real time; the frame rate of the measurement video is uniform when the measurement video is played at the server side, each picture frame of the measurement video comprises a plurality of scales, the scales are provided with color marks, and the width of the two connected scales is fixed. The frame rate is uniform, namely the video pictures move the same distance in the specified time.
S3: and after receiving, the client performs decoding playing.
S4: and detecting the positions where the scales pass in the picture in real time and in high frequency on the surface played by the client, namely continuously taking colors at specified positions, wherein the specified positions are areas where the scales pass, recording time points of taking the colors of the scales, and calculating the intervals of all the time to obtain X1, X2, X3, X4, … and Xn, wherein the number of samples is n, and the average value is M.
S5: obtaining variance S of X1, X2, X3, X4, … and Xn,
the smaller the variance, the smoother the picture.
The smaller the variance is, the closer the X1, X2, X3, X4, … and Xn are, the more uniform the interval between frames and the better the video fluency; the larger the variance is, the larger the fluctuation of X1, X2, X3, X4, … and Xn is, the intervals between frames are not uniform, and the video fluency is not good.
Further, the color is identified as red or blue.
Further, the distance between two adjacent scales in the picture frame is equal. The color is taken when the test is convenient, and the calculated amount is reduced.
Furthermore, the scales of two adjacent picture frames move a plurality of pixel points in the same direction. The color is taken when the test is convenient, and the calculated amount is reduced.
Further, in step S4, the frequency of the high frequency detection frame is 600-.
Further, the scale is as follows: longitudinal and/or transverse lines. The lines are used as scales, so that color taking is convenient during testing.
By adopting the scheme, the method for testing the smoothness of the video streaming client side is provided, the variance can accurately reflect the fluency of the video, the smaller the variance is, the closer the X1, X2, X3, X4, … and Xn are, the more uniform the intervals between frames are, and the fluency of the video is good; the larger the variance is, the larger the fluctuation of X1, X2, X3, X4, … and Xn is, the intervals between frames are not uniform, and the video fluency is not good. In addition, the smoothness of the streaming video is displayed in a data mode, so that the testing and comparison are facilitated.
Drawings
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a frame of a video measurement according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating the playback of an embodiment of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and the specific embodiments.
Referring to fig. 1-3, the present invention provides a method for testing smoothness of a video streaming client, comprising the following steps.
S1: two computers connected with a network are prepared, one is a service end, and the other is a client end.
S2: the server plays the measurement video, and encodes and pushes the played picture to the client in real time; the frame rate of the measurement video is uniform when the measurement video is played at the server side, each picture frame of the measurement video comprises a plurality of scales, the scales are provided with color marks, and the width of the two connected scales is fixed. The frame rate is uniform, namely the video pictures move the same distance in the specified time.
S3: and after receiving, the client performs decoding playing.
S4: and detecting the positions where the scales pass in the picture in real time and in high frequency on the surface played by the client, namely continuously taking colors at specified positions, wherein the specified positions are areas where the scales pass, recording time points of taking the colors of the scales, and calculating the intervals of all the time to obtain X1, X2, X3, X4, … and Xn, wherein the number of samples is n, and the average value is M.
S5: obtaining variance S of X1, X2, X3, X4, … and Xn,
the smaller the variance, the smoother the picture.
The smaller the variance is, the closer the X1, X2, X3, X4, … and Xn are, the more uniform the interval between frames and the better the video fluency; the larger the variance is, the larger the fluctuation of X1, X2, X3, X4, … and Xn is, the intervals between frames are not uniform, and the video fluency is not good.
In this embodiment, the color designation is red or blue.
In this embodiment, the distances between two adjacent scales in the picture frame are equal. The color is taken when the test is convenient, and the calculated amount is reduced.
In this embodiment, the scales of two adjacent frames are shifted by a plurality of pixels in the same direction. The color is taken when the test is convenient, and the calculated amount is reduced.
In the present embodiment, in step S4, the frequency of the high frequency detection frame is 600-.
In this embodiment, the scales are: longitudinal lines. The lines are used as scales, so that color taking is convenient during testing.
In summary, the present invention provides a method for testing the smoothness of a video streaming client, where the variance can accurately reflect the smoothness of a video, and the smaller the variance is, the closer X1, X2, X3, X4, …, and Xn are, the more uniform the interval between frames is, and the better the smoothness of the video is; the larger the variance is, the larger the fluctuation of X1, X2, X3, X4, … and Xn is, the intervals between frames are not uniform, and the video fluency is not good. In addition, the smoothness of the streaming video is displayed in a data mode, so that the testing and comparison are facilitated.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A testing method for datamation of smoothness of a video streaming client is characterized by comprising the following steps:
s1: preparing two computers connected by a network, wherein one computer is a server side, and the other computer is a client side;
s2: the server plays the measurement video, and encodes and pushes the played picture to the client in real time; the frame rate of the measurement video is uniform when the measurement video is played at the server side, each picture frame of the measurement video comprises a plurality of scales, the scales are provided with color marks, and the width of the two connected scales is fixed;
s3: after receiving, the client performs decoding playing;
s4: detecting the positions where the scales pass in the picture in real time and in high frequency on the surface played by the client, namely continuously taking colors at specified positions, wherein the specified positions are areas where the scales pass, recording time points of taking the colors of the scales, and calculating the intervals of all the time to obtain X1, X2, X3, X4, … and Xn, wherein the sample number is n, and the average value is M;
s5: obtaining variance S of X1, X2, X3, X4, … and Xn,
the smaller the variance, the smoother the picture.
2. The method as claimed in claim 1, wherein the color is red or blue.
3. The method as claimed in claim 1, wherein the distance between two adjacent scales in the frame is equal.
4. The method as claimed in claim 1, wherein the scales of two adjacent frames are shifted by a plurality of pixels in the same direction.
5. The method as claimed in claim 1, wherein in step S4, the frequency of the high frequency detection frame is 600 times/second and 1200 times/second.
6. The method as claimed in claim 1, wherein the scale is: longitudinal and/or transverse lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210101774.8A CN114422774A (en) | 2022-01-27 | 2022-01-27 | Testing method for datamation of smoothness of video streaming client |
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| CN202210101774.8A CN114422774A (en) | 2022-01-27 | 2022-01-27 | Testing method for datamation of smoothness of video streaming client |
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| CN114422774A true CN114422774A (en) | 2022-04-29 |
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| CN202210101774.8A Pending CN114422774A (en) | 2022-01-27 | 2022-01-27 | Testing method for datamation of smoothness of video streaming client |
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- 2022-01-27 CN CN202210101774.8A patent/CN114422774A/en active Pending
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