Portable equipment video signal analysis system and method based on multi-protocol interface

Abstract

The invention discloses a portable equipment video signal analysis system and a portable equipment video signal analysis method based on a multi-protocol interface, and relates to the technical field of video signal protocol conversion management. Carrying out difference analysis on conversion conditions and deviation analysis on expenditure conversion duration, and for each historical protocol conversion record, searching other historical protocol conversion execution record modes which can mutually verify that the change of the conversion duration accords with the working performance rule of the portable equipment; the performance stability condition of the portable device in the video signal protocol conversion execution process is evaluated, potential problems existing in the protocol conversion execution process of the portable device are found and solved in time, the stability and reliability of video signal transmission processing are improved, and the risk of transmission conversion collapse or abnormity is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of video signal protocol conversion management, and specifically to a video signal analysis system and method for portable devices based on multi-protocol interfaces. Background Art

[0002] A portable device with multi-protocol interfaces refers to a device that is easy to carry between usage sites, supports multiple network communication protocols, can achieve seamless connection with different operating systems and devices, and ensure the stability and reliability of data transmission. It usually has the characteristics of small size, easy operation, and convenient carrying. In addition to laptops in most cases, portable devices with multi-protocol interfaces also include other types of devices, such as all-in-one computers, which also have multi-protocol interfaces and belong to the category of portable computers.

[0003] Portable devices with multi-protocol interfaces can often be compatible with multiple video sources, are not restricted by device types or brands, and can often process video data in real time, with a certain degree of flexibility, compatibility, and intelligence.

[0004] Because this portable device often needs to communicate with multiple different systems and services in the actual working environment, performance monitoring can ensure the compatibility and interoperability of the device under different protocols, prevent data loss, errors, or inconsistencies, and thus ensure the normal operation of the system. Through performance monitoring, potential problems in converting video signals by the device under different protocols can be detected and solved in a timely manner, improving the stability and reliability of video signal transmission and processing. This helps reduce the risk of system crashes or abnormal behaviors and ensures the stable operation of the system in various environments. Summary of the Invention

[0005] The purpose of the present invention is to provide a video signal analysis system and method for portable devices based on multi-protocol interfaces to solve the problems raised in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A video signal analysis method for portable devices based on multi-protocol interfaces, the method includes:

[0007] Step S1: Collect historical protocol conversion execution records of a portable device with multi-communication protocol interfaces; classify the historical protocol conversion execution records based on different actually executed protocol conversion modes, and sort out the working performance characteristics presented by the portable device in each historical protocol conversion execution record;

[0008] Step S2: Compare the deviation of the conversion duration spent on completing video protocol conversion and the deviation of the working performance characteristics presented when the portable device executes the same protocol conversion mode;

[0009] Step S3: Sort out the variation law of the conversion duration spent on completing the corresponding video protocol conversion when the portable device executes different protocol conversion modes, and capture the characteristic conversion duration interval and the conversion duration fluctuation interval;

[0010] Step S4: Calculate the performance fluctuation index presented during the video protocol conversion process of the portable device, and determine whether to send a warning prompt message to the management terminal according to the performance fluctuation index.

[0011] Preferably, step S1 includes:

[0012] Step S1-1: Obtain the protocol conversion modes selected and called by the portable device in each historical protocol conversion execution record; respectively gather the historical protocol conversion execution records with the same selected and called protocol conversion modes to obtain several target record sets;

[0013] Step S1-2: Extract the parameter values of each characteristic condition parameter item that affects the video conversion performance of the portable device from each historical protocol conversion execution record. Among them, the characteristic condition parameter items include: the total duration, resolution, bit rate, and frame rate of the video to be subjected to the corresponding protocol conversion, and the CPU utilization rate and system resource occupancy ratio of the portable device when starting to execute the protocol conversion on the video based on the selected and called corresponding protocol conversion mode;

[0014] The longer the duration of the video, the longer the conversion time required. This is because each frame needs to be processed during the conversion process. The longer the duration, the more frames need to be processed, so the conversion time will be extended accordingly; the higher the resolution of the video, the longer the conversion time required. A high resolution means that the processing time for each pixel is longer, so the overall conversion time will increase; the higher the bit rate, the larger the data volume of the video, and the longer the conversion time required. A high bit rate means that a larger amount of data is transmitted per second, which requires more time to process; the higher the frame rate, the more frames are processed per second, and the conversion time will also be extended accordingly. High-frame-rate videos require more computing resources to process the details of each frame; at the same time, encoding and decoding videos consume a lot of system resources.

[0015] Preferably, step S2 includes:

[0016] Step S2-1: In each target record set, extract the conversion duration spent by the portable device to complete the corresponding video protocol conversion in each historical protocol conversion execution record; extract any two different historical protocol conversion execution records whose difference in conversion duration satisfies being greater than the duration difference threshold, and construct several characteristic record groups;

[0017] Step S2-2: For each feature record group, extract all feature condition parameter items that present parameter value deviations in two different corresponding historical protocol conversion execution records, and set them as the target condition parameter items of each feature record group respectively;

[0018] Step S2-3: If in the feature record group composed of a historical protocol conversion execution record a and a historical protocol conversion execution record b, it satisfies that the conversion duration Ta > Tb, where Ta and Tb are the conversion durations extracted from the historical protocol conversion execution records a and b respectively; set the parameter values extracted from the corresponding target condition parameter items in the historical protocol conversion execution record b as the reference value X, and set the parameter values extracted from the corresponding target condition parameter items in the historical protocol conversion execution record a as the reference change value Y;

[0019] Step S2-4: Calculate the reference change rate β = |X - Y| / X for each target condition parameter item within each feature record group, and sort all the corresponding target condition parameter items in descending order according to the corresponding reference change rate to obtain the sequence of feature target condition parameter items corresponding to each feature record group;

[0020] The arrangement presented in the sequence of feature target condition parameter items to a certain extent reflects the contribution degree distribution of the corresponding target condition parameter items in the process of influencing the growth trend of the conversion duration. Among them, if the sorting value of a certain target condition parameter item in the sequence of feature target condition parameter items is more forward, it indicates that the change in the parameter value of a certain target condition parameter item is more likely to be the variable factor causing the increase in the conversion duration of the portable device.

[0021] Preferably, Step S3 includes:

[0022] Step S3-1: In each target record set respectively, gather the feature record groups with exactly the same extracted all target condition parameter items and exactly the same extracted sequence of feature target condition parameter items to obtain several feature record group sets, and set the feature record group set with the number of included feature record groups greater than the number threshold as the target set;

[0023] Step S3-2: Sequentially extract the longest conversion duration Tmax and the shortest conversion duration Tmin required for the portable device to complete the corresponding video protocol conversion in each target set, and extract a feature conversion duration interval [Tmin, Tmax] corresponding to one target set;

[0024] Step S3-3: If it is traversed and captured that there are N feature conversion duration intervals overlapping within a certain time interval, set the certain time interval as the conversion duration fluctuation interval of the portable device, and set the fluctuation coefficient value corresponding to the certain time interval as N, where N ≥ 2.

[0025] Preferably, step S4 includes:

[0026] Step S4-1: Set all historical protocol conversion execution records covered in each target set as the first target conversion records, and set other historical protocol conversion execution records as the second target conversion records; Arrange all historical protocol conversion execution records in the order of the record generation time, capture the interval duration between every two adjacent second target conversion records, and obtain the average interval duration Tf.

[0027] Since the historical protocol conversion execution records belonging to the first target conversion records are all historical protocol conversion execution records that have other records that can mutually verify that the change in the conversion duration conforms to the working performance law of the portable device during video protocol conversion, in this solution, it is default that the historical protocol conversion execution records belonging to the first target conversion records are records presenting the corresponding working performance in a normal state. On the contrary, it is default that the historical protocol conversion execution records belonging to the second target conversion records are records presenting the corresponding working performance in an abnormal state.

[0028] Step S4-2: Traverse the conversion durations spent by the portable device to complete the corresponding video protocol conversion in each second target conversion record; If the conversion duration extracted from a certain second target conversion record is within a certain conversion duration fluctuation range, set the fluctuation coefficient value corresponding to the certain conversion duration fluctuation range as the abnormal weight value of the certain second target conversion record, and obtain the average abnormal weight value G of all second target conversion records.

[0029] Step S4-3: Accumulate the total number Q of the second target conversion records, calculate the performance fluctuation index δ = (1 / Tf) × G × Q of the portable device during the video protocol conversion process. When the performance fluctuation index is greater than the index threshold, send a warning prompt message to the management terminal.

[0030] To better implement the above method, a video signal analysis system for a portable device is also proposed. The system includes: a protocol conversion execution data management module, a protocol conversion record data comparison module, a feature execution data extraction module, and a performance warning prompt management module.

[0031] The protocol conversion execution data management module is used to collect historical protocol conversion execution records of a portable device with multiple communication protocol interfaces; classify the historical protocol conversion execution records based on different actually executed protocol conversion modes, and sort out the working performance characteristics presented by the portable device in each historical protocol conversion execution record.

[0032] The protocol conversion record data comparison module is used to compare the deviation of the conversion duration spent on presenting the completed video protocol conversion and the deviation of the presented working performance characteristics when the portable device executes the same protocol conversion mode;

[0033] The feature execution data extraction module is used to sort out the variation law of the conversion duration spent on completing the corresponding video protocol conversion when the portable device executes different protocol conversion modes, and capture the characteristic conversion duration interval and the conversion duration fluctuation interval;

[0034] The performance warning prompt management module is used to calculate the performance fluctuation index presented during the video protocol conversion execution of the portable device, and determine whether to send a warning prompt message to the management terminal according to the performance fluctuation index.

[0035] Preferably, the protocol conversion execution data management module includes a historical record classification management unit and a feature data sorting unit;

[0036] The historical record classification management unit is used to collect the historical protocol conversion execution records of the portable device with multiple communication protocol interfaces; classify the historical protocol conversion execution records based on the different protocol conversion modes actually executed;

[0037] The feature data sorting unit is used to sort out the working performance characteristics presented by the portable device in each historical protocol conversion execution record.

[0038] Preferably, the feature execution data extraction module includes a characteristic conversion duration interval extraction unit and a conversion duration fluctuation interval extraction unit;

[0039] The characteristic conversion duration interval extraction unit is used to sort out the variation law of the conversion duration spent on completing the corresponding video protocol conversion when the portable device executes different protocol conversion modes, and capture the characteristic conversion duration interval;

[0040] The conversion duration fluctuation interval extraction unit receives the data in the characteristic conversion duration interval extraction unit and captures the conversion duration fluctuation interval of the portable device.

[0041] Compared with the prior art, the beneficial effects of the present invention are as follows: By analyzing the differences in conversion conditions and the deviations in conversion time spent for the protocol conversion records generated by a portable device with multiple protocol interfaces under different protocol conversion modes, for each historical protocol conversion record, by finding other historical protocol conversion execution records that can mutually verify that the change in conversion time conforms to the working performance law of the portable device, the present invention realizes the evaluation of the performance stability of the portable device during the video signal protocol conversion process, timely discovers and solves potential problems existing in the portable device during protocol conversion, improves the stability and reliability of video signal transmission and processing, and reduces the risk of transmission conversion crashes or anomalies. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic flowchart of a method for analyzing video signals of a portable device based on multiple protocol interfaces according to the present invention;

[0043] Figure 2 It is a schematic structural diagram of a system for analyzing video signals of a portable device based on multiple protocol interfaces according to the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0044] Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0045] Embodiment: As Figure 1 - Figure 2 shown, the present invention provides a technical solution, a method for analyzing video signals of a portable device based on multiple protocol interfaces, the method including:

[0046] Step S1: Collect historical protocol conversion execution records of a portable device with multiple communication protocol interfaces; classify the historical protocol conversion execution records based on different actually executed protocol conversion modes, and sort out the working performance characteristics presented by the portable device in each historical protocol conversion execution record;

[0047] When a multi-protocol interface device selects and calls a specific video conversion mode, it mainly depends on the device's encapsulation format and coding format; the structure of a video file usually consists of file information and audio-visual data. Different encapsulation formats (such as MP4, AVI, FLV, etc.) determine the structure of the video file and the size of the audio-visual data block. The choice of encapsulation format will affect the compatibility and transmission efficiency of the video file;

[0048] Among them, step S1 includes:

[0049] Step S1-1: Obtain the protocol conversion modes selected and invoked by the portable device in each historical protocol conversion execution record; respectively pool the historical protocol conversion execution records with the same selected and invoked protocol conversion modes to obtain several target record sets;

[0050] Step S1-2: Respectively extract the parameter values of each characteristic condition parameter item that affects the video conversion performance of the portable device from each historical protocol conversion execution record, where the characteristic condition parameter items include: the total duration, resolution, bit rate, and frame rate of the video to be subjected to the corresponding protocol conversion, and the CPU utilization rate and system resource occupancy ratio of the portable device when starting to execute the protocol conversion on the video based on the selected and invoked corresponding protocol conversion mode;

[0051] Step S2: Compare the deviation of the conversion duration spent on presenting the completed video protocol conversion and the deviation of the working performance characteristics when the portable device executes the same protocol conversion mode;

[0052] Among them, Step S2 includes:

[0053] Step S2-1: Respectively in each target record set, extract the conversion duration spent by the portable device to complete the corresponding video protocol conversion in each historical protocol conversion execution record; extract any two different historical protocol conversion execution records whose difference in conversion duration satisfies being greater than the duration difference threshold, and construct several characteristic record groups;

[0054] Step S2-2: Respectively for each characteristic record group, extract all the characteristic condition parameter items with parameter value deviations in the corresponding two different historical protocol conversion execution records, and correspondingly set them as the target condition parameter items of each characteristic record group;

[0055] Step S2-3: If in the characteristic record group composed of a historical protocol conversion execution record a and a historical protocol conversion execution record b, it satisfies that the conversion duration Ta>Tb, where Ta and Tb are the conversion durations extracted from the historical protocol conversion execution records a and b respectively; set the parameter values extracted from the corresponding target condition parameter items in the historical protocol conversion execution record b as the reference value X, and set the parameter values extracted from the corresponding target condition parameter items in the historical protocol conversion execution record a as the reference change value Y;

[0056] For example, in a certain historical protocol conversion execution record a, the conversion duration spent on executing the corresponding protocol conversion is 14 minutes, and in a certain historical protocol conversion execution record b, the conversion duration spent on executing the corresponding protocol conversion is 8 minutes; if the target condition parameter items of this characteristic record group include the total duration, resolution, frame rate, and CPU utilization rate;

[0057] Since 14 min > 8 min, in summary, it can be known that the parameter values specifically extracted from the historical protocol conversion execution record b for the total duration, resolution, frame rate, and CPU utilization rate should be set as the corresponding reference values, and the parameter values specifically extracted from the historical protocol conversion execution record a for the total duration, resolution, frame rate, and CPU utilization rate should be set as the reference change values;

[0058] Step S2-4: Calculate the reference change rate β = |X - Y| / X for each target condition parameter item within each feature record group, and sort all the corresponding target condition parameter items in descending order according to the corresponding reference change rate to obtain the feature target condition parameter item sequence for each feature record group;

[0059] Step S3: Sort out the variation law of the conversion duration spent in completing the corresponding video protocol conversion when the portable device executes different protocol conversion modes, and capture the characteristic conversion duration interval and the conversion duration fluctuation interval;

[0060] Among them, Step S3 includes:

[0061] Step S3-1: In each target record set, gather the feature record groups with exactly the same all target condition parameter items extracted and exactly the same feature target condition parameter item sequence obtained, to obtain several feature record group sets, and set the feature record group set with the number of included feature record groups greater than the number threshold as the target set;

[0062] Step S3-2: Sequentially extract the longest conversion duration Tmax and the shortest conversion duration Tmin required for the portable device to complete the corresponding video protocol conversion in each target set, and extract a characteristic conversion duration interval [Tmin, Tmax] for one target set;

[0063] Step S3-3: If it is captured through traversal that there are N characteristic conversion duration intervals overlapping within a certain time interval, then set the certain time interval as the conversion duration fluctuation interval of the portable device, and set the corresponding fluctuation coefficient value of the certain time interval as N, where N ≥ 2;

[0064] Step S4: Calculate the performance fluctuation index presented during the execution of the video protocol conversion by the portable device, and determine whether to send a warning prompt message to the management terminal according to the performance fluctuation index;

[0065] Among them, Step S4 includes:

[0066] Step S4-1: Set all historical protocol conversion execution records covered in each target set as the first target conversion records, and set other historical protocol conversion execution records as the second target conversion records; arrange all historical protocol conversion execution records in the order of the record generation time, capture the interval duration between every two adjacent second target conversion records, and obtain the average interval duration Tf.

[0067] Step S4-2: Traverse the conversion durations taken by the portable device to complete the corresponding video protocol conversion in each second target conversion record; if the conversion duration extracted from a certain second target conversion record falls within a certain conversion duration fluctuation range, set the fluctuation coefficient value corresponding to the certain conversion duration fluctuation range as the abnormal weight value of the certain second target conversion record, and obtain the average abnormal weight value G of all second target conversion records.

[0068] Step S4-3: Accumulate the total number Q of the second target conversion records, calculate the performance fluctuation index δ = (1 / Tf) × G × Q presented by the portable device during the video protocol conversion process. When the performance fluctuation index is greater than the index threshold, send a warning prompt message to the management terminal.

[0069] To better implement the above method, a video signal analysis system for a portable device is also proposed. The system includes: a protocol conversion execution data management module, a protocol conversion record data comparison module, a feature execution data extraction module, and a performance warning prompt management module.

[0070] The protocol conversion execution data management module is used to collect historical protocol conversion execution records of a portable device with multiple communication protocol interfaces; classify the historical protocol conversion execution records based on different actually executed protocol conversion modes, and sort out the working performance characteristics presented by the portable device in each historical protocol conversion execution record.

[0071] Among them, the protocol conversion execution data management module includes a historical record classification management unit and a feature data sorting unit.

[0072] The historical record classification management unit is used to collect historical protocol conversion execution records of a portable device with multiple communication protocol interfaces; classify the historical protocol conversion execution records based on different actually executed protocol conversion modes.

[0073] The feature data sorting unit is used to sort out the working performance characteristics presented by the portable device in each historical protocol conversion execution record.

[0074] The protocol conversion record data comparison module is used to compare the deviation of the conversion duration taken to complete the video protocol conversion and the deviation of the working performance characteristics presented when the portable device executes the same protocol conversion mode.

[0075] A feature execution data extraction module, which is used to sort out the variation law of the conversion duration spent on completing the corresponding video protocol conversion when the portable device executes different protocol conversion modes, and capture the characteristic conversion duration interval and the conversion duration fluctuation interval;

[0076] Among them, the feature execution data extraction module includes a characteristic conversion duration interval extraction unit and a conversion duration fluctuation interval extraction unit;

[0077] The characteristic conversion duration interval extraction unit is used to sort out the variation law of the conversion duration spent on completing the corresponding video protocol conversion when the portable device executes different protocol conversion modes, and capture the characteristic conversion duration interval;

[0078] The conversion duration fluctuation interval extraction unit receives the data in the characteristic conversion duration interval extraction unit and captures the conversion duration fluctuation interval of the portable device;

[0079] A performance warning prompt management module, which is used to calculate the performance fluctuation index presented by the portable device during the video protocol conversion process, and judge whether to send a warning prompt message to the management terminal according to the performance fluctuation index.

[0080] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A portable device video signal analysis method based on a multi-protocol interface, characterized in that: The method comprises: Step S1: collecting historical protocol conversion execution records for a portable device having multiple communication protocol interfaces; classifying the historical protocol conversion execution records based on the different protocol conversion modes actually executed, and sorting out the working performance characteristics presented by the portable device in each historical protocol conversion execution record; Step S2: comparing the deviation of the conversion time taken to complete the video protocol conversion when the portable device executes the same protocol conversion mode, and presenting the deviation of the working performance characteristics; Step S3: sorting out the changing rules of the conversion time taken by the portable device to complete the corresponding video protocol conversion when executing different protocol conversion modes, and capturing the characteristic conversion time interval and the conversion time fluctuation interval; Step S4: Calculate the performance fluctuation index of the portable device during the video protocol conversion process, and determine whether to send an early warning prompt message to the management terminal according to the performance fluctuation index.

2. The portable device video signal analysis method based on a multi-protocol interface according to claim 1, characterized in that: The step S1 comprises: Step S1-1: Acquire the protocol conversion mode selected and called by the portable device in each historical protocol conversion execution record; respectively collect the historical protocol conversion execution records with the same selected and called protocol conversion mode to obtain a plurality of target record sets; Step S1-2: Extract parameter values ​​for each characteristic condition parameter item that affects the video conversion performance of the portable device from each historical protocol conversion execution record, wherein the characteristic condition parameter items include: the total duration, resolution, bit rate and frame rate of the video to be converted to the corresponding protocol, and the CPU utilization and system resource share of the portable device when it starts to perform protocol conversion on the video based on the corresponding protocol conversion mode selected.

3. The portable device video signal analysis method based on a multi-protocol interface according to claim 1, characterized in that: The step S2 comprises: Step S2-1: extracting the conversion time taken by the portable device to complete the corresponding video protocol conversion in each historical protocol conversion execution record in each target record set; extracting any two different historical protocol conversion execution records whose conversion time difference satisfies a time difference threshold value, and constructing a plurality of feature record groups; Step S2-2: for each feature record group, extract all feature condition parameter items showing parameter value deviations in the corresponding two different historical protocol conversion execution records, and set them as target condition parameter items for each feature record group; Step S2-3: If, in a feature record group consisting of a historical protocol conversion execution record a and a historical protocol conversion execution record b, the conversion duration Ta>Tb is satisfied, wherein Ta and Tb are the conversion durations extracted from the historical protocol conversion execution records a and b, respectively; the parameter value extracted from the historical protocol conversion execution record b for each corresponding target condition parameter item is set as the reference value X, and the parameter value extracted from the historical protocol conversion execution record a for each corresponding target condition parameter item is set as the reference change value Y; Step S2-4: Calculate the reference change rate β=|XY| / X for each target condition parameter item in each feature record group, and sort all corresponding target condition parameter items from large to small according to the corresponding reference change rate to obtain the feature target condition parameter item sequence corresponding to each feature record group.

4. The portable device video signal analysis method based on a multi-protocol interface according to claim 3, characterized in that: The step S3 comprises: Step S3-1: In each target record set, the feature record groups whose corresponding extracted target condition parameter items are completely identical and whose extracted feature target condition parameter item sequences are also completely identical are collected to obtain a plurality of feature record group sets, and the feature record group set whose number of feature record groups is greater than a number threshold is set as the target set; Step S3-2: extracting the longest conversion time Tmax and the shortest conversion time Tmin required for the portable device to complete the corresponding video protocol conversion from each target set in turn, and extracting a characteristic conversion time interval [Tmin, Tmax] corresponding to each target set; Step S3-3: If the traversal captures that N characteristic conversion duration intervals overlap within a certain time interval, the certain time interval is set as the conversion duration fluctuation interval of the portable device, and the fluctuation coefficient value corresponding to the certain time interval is set to N, where N≧2.

5. The portable device video signal analysis method based on a multi-protocol interface according to claim 4, characterized in that: Step S4-1: Set all historical protocol conversion execution records covered in each target set as the first target conversion record, and set other historical protocol conversion execution records as the second target conversion record; arrange all historical protocol conversion execution records in the order of record generation time, capture the interval time between each two adjacent second target conversion records, and obtain the average interval time Tf; Step S4-2: traversing the conversion time taken by the portable device to complete the corresponding video protocol conversion in each second target conversion record; If the conversion duration extracted from a second target conversion record is within a conversion duration fluctuation range, the fluctuation coefficient value corresponding to the conversion duration fluctuation range is set as the abnormal weight value of the second target conversion record, and the average abnormal weight value G of all second target conversion records is obtained; Step S4-3: Accumulate the total number Q of second target conversion records, calculate the performance fluctuation index δ = (1 / Tf) × G × Q presented by the portable device during the video protocol conversion process, and when the performance fluctuation index is greater than the index threshold, send a warning prompt message to the management terminal.

6. A portable device video signal analysis system, used to execute the portable device video signal analysis method based on a multi-protocol interface according to any one of claims 1 to 5, characterized in that: The system includes: a protocol conversion execution data management module, a protocol conversion record data comparison module, a feature execution data extraction module, and a performance warning prompt management module; The protocol conversion execution data management module is used to collect historical protocol conversion execution records for a portable device with multiple communication protocol interfaces; classify the historical protocol conversion execution records based on the different protocol conversion modes actually executed, and sort out the working performance characteristics presented by the portable device in each historical protocol conversion execution record; The protocol conversion record data comparison module is used to compare the deviation of the conversion time taken to complete the video protocol conversion when the portable device executes the same protocol conversion mode, and the deviation of the working performance characteristics; The feature execution data extraction module is used to sort out the change rules of the conversion time taken by the portable device to complete the corresponding video protocol conversion when executing different protocol conversion modes, and capture the feature conversion time interval and conversion time fluctuation interval; The performance warning prompt management module is used to calculate the performance fluctuation index presented by the portable device during the video protocol conversion process, and determine whether to send warning prompt information to the management terminal according to the performance fluctuation index.

7. A portable device video signal analysis system according to claim 6, characterized in that: The protocol conversion execution data management module includes a history record classification management unit and a feature data combing unit; The historical record classification management unit is used to collect historical protocol conversion execution records for a portable device having a multi-communication protocol interface; Classifying historical protocol conversion execution records based on different actually executed protocol conversion modes; The characteristic data combing unit is used to comb the working performance characteristics presented by the portable device in each historical protocol conversion execution record.

8. The portable device video signal analysis system according to claim 6, characterized in that: The feature execution data extraction module includes a feature conversion duration interval extraction unit and a conversion duration fluctuation interval extraction unit; The characteristic conversion duration interval extraction unit is used to sort out the change rules of the conversion time taken by the portable device to complete the corresponding video protocol conversion when executing different protocol conversion modes, and capture the characteristic conversion duration interval; The conversion duration fluctuation interval extraction unit receives the data in the feature conversion duration interval extraction unit and captures the conversion duration fluctuation interval for the portable device.

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