CN115766986A - Double-channel video recording device - Google Patents
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Abstract
The invention relates to a double-channel video recording device, belonging to the technical field of Ethernet communication technology and video source coding. The device of the invention does not need to destroy or adjust the layout on the original console mouse and keyboard operation platform, and also does not need to frequently plug and pull DVI signal cables during normal work and video playback, thereby realizing the storage and playback of the video signals output by the two monitors of the console. The device has a retrieval function of recorded video files, the recorded video files of the two displays can be synchronously and quickly forwarded and retreated or synchronously dragged to the same moment when being played, complete synchronization of playing of the two video files is guaranteed, the recorded video files can be remotely played on a console display or downloaded to a Windows or Linux client side for local playback through Ethernet, the device has an abnormal power-off data protection function, and the subsequent extensible function of the capacity of the solid state disk is supported.
Description
Technical Field
The invention belongs to the technical field of Ethernet communication technology and video source coding, and particularly relates to a two-channel video recording device.
Background
The control console of a certain control system consists of three parts, namely two displays, a mouse and keyboard operation platform and a computer case. Each display has 1 VGA interface and 1 DVI interface, and the console computer outputs two DVI video signals to enter the two displays respectively. When the console is put into use for a period of time, a user proposes to add a video recording function, and video images output by the two displays of the console are stored in a file, so that the recorded video contents of the two displays can be synchronously played back afterwards.
The video recording function is added on the basis of the original control console, a video recording device needs to be redesigned, and two common implementation methods are provided:
(1) The console computer outputs DVI1 signals to the display 1, outputs DVI2 signals to the display 2, and the display 1 and the display 2 output 2 VGA signals to the video recording device. The video recording device outputs DVI3 signals to the display 1 and DVI4 signals to the display 2. When the console computer works normally, the display needs to output real-time working video images, at the moment, DVI3 output signals and DVI4 output signals are manually switched off, and DVI1 output signals and DVI2 output signals are manually switched on; when the recorded video file is played back, the DVI3 output signal and the DVI4 output signal are manually switched on, and the DVI1 output signal and the DVI2 output signal are manually switched off.
Keys are added on a mouse and keyboard operation platform of a control console to realize playback control operation of video images;
(2) The console computer outputs DVI1 signals and DVI2 signals to the video recording device, the video recording device outputs DVI3 signals to the display 1, and DVI4 signals to the display 2. Keys are added on a console mouse and keyboard operation platform to realize switching of real-time output video images and playback control operation of the video images.
The two methods can realize the video recording function of the two displays of the console, but have the defects. The first method needs to adjust the layout on the original console mouse and keyboard operation platform, and the structure is greatly changed; meanwhile, DVI signal cables need to be frequently plugged and unplugged during normal work and video playback, and great inconvenience is brought to users. The second method also needs to adjust the layout on the original console mouse and keyboard operation platform, and the structural change is larger than that of the first method; although the method does not need to switch DVI signal cables, when the console normally outputs the real-time working video image, once the video recording equipment fails, the real-time working video image cannot be normally output on the display.
Disclosure of Invention
Technical problem to be solved
The technical problem to be solved by the invention is as follows: how to design a binary channels video admission device, solve "realize the inconvenient and not high problem of reliability of the synchronous video admission operation of two displays on the hardware basis of the existing control cabinet".
(II) technical scheme
In order to solve the technical problem, the invention provides a design method of a double-channel video recording device, which is designed to comprise video recording equipment, a console computer and a client;
the video recording apparatus includes:
the self-checking module is used for checking the working state of a video acquisition module and a video storage module of the video recording equipment after the video recording equipment is powered on;
the video acquisition module is connected with the self-checking module and is used for acquiring two-channel VGA signals output by two displays in the console in real time;
the video storage module is connected with the video acquisition module and used for converting the video format of the two-channel VGA video signal acquired by the video acquisition module, generating and naming a video file, segmenting the video file, storing the video file and generating a video file list;
the console computer includes:
the first video file list retrieval module is used for acquiring a video file list in the video recording equipment;
the first video file playing module is connected with the first video file list retrieving module and used for playing and stopping playing the video files in the video file list;
the first video file list retrieval module is called by application software of the console computer, and when the application software of the console computer opens the first video file list retrieval module, the application software of the console computer sends a command of stopping recording videos to the video recording equipment through the Ethernet;
the client comprises:
the second video file list retrieval module is used for acquiring a video file list in the video recording equipment;
the video downloading module is connected with the second video file list retrieval module and is used for downloading the video files recorded in the video recording equipment;
and the second video playing module is connected with the video downloading module and is used for carrying out playing operation and stopping playing operation on the video file stored locally or remotely.
Preferably, the working state check includes power-on initialization self-check and power-on periodic self-check, and the self-check content includes hardware states, working states, health states and remaining storage capacities of a video acquisition module and a video storage module in the video recording device; and after each self-check is finished, sending the self-check result to application software in a computer of the console through the Ethernet.
Preferably, the console computer, the two monitors of the console, and the video recording device are powered on simultaneously, and after the video recording device is powered on, the video acquisition module automatically and synchronously acquires the two-channel VGA video signals output by the two monitors of the console.
Preferably, after the video recording device is powered on, the video storage module automatically starts to synchronously store the two-channel VGA video signals output by the two displays of the console; the video storage module names video files recorded by two monitors of the console respectively, creates two file storage threads to process received VGA video data respectively, firstly carries out compression coding on the collected VGA signal of each channel according to the H.264 standard, and then converts the format of the video file into the MP4 format for storage.
Preferably, the console computer sends the time of the console computer to the video recording device through the ethernet, so as to keep time synchronization of the two devices, the video storage module obtains the current system time when a new video file starts to be generated for storing an MP4 format file, the format of the current system time is "xx minutes xx seconds when xx years xx month xx day xx, and the naming specification of the newly generated first display video file is: current system time + N001, i.e., "xx minutes xx seconds N001" in xx years xx months xx days xx; the naming specification of the newly generated second display video file is: current System time + N002, i.e., "xx years xx months xx days xx minutes xx seconds N002".
Preferably, when the video recording device receives a command of starting to record videos, the video recording device newly generates two video files named according to the current system time format, and stores the video signals acquired in real time and converted in format in the video files; when the video recording equipment receives a command of stopping recording videos, the video recording equipment stops the recording work of two currently opened video files and closes the two video files, wherein the command of starting recording videos and the command of stopping recording videos are sent by a control console computer or a client through the Ethernet;
when the size of a single stored video file is larger than 1000MB, the video storage module automatically generates a new video file named by the current system time, and can realize the cyclic storage of the video file, and the cyclic storage principle is as follows: when a new storage video file is generated, if the residual storage space of the solid state disk is in a (15%, 20%) interval, deleting the video file stored earliest until the residual storage space of the solid state disk is more than 20%;
if the console computer is abnormally powered off at the time of T0, the video recording device and the console computer are simultaneously powered off, the video storage module can completely store all video data output by the two displays before the time of T0-10s, and when the abnormal power off occurs, the self-checking module monitors that the working voltage of the device is lower than a specified threshold value, an 'immediate standby' command is sent to the video storage module, the video storage module immediately stops the receiving and writing work of the video data, and all data in the receiving buffer area are written into the nonvolatile NAND unit.
Preferably, the video recording device further has a Log recording function, and is configured to implement Log recording of a system, where the Log recording includes a system start Log, a device self-check Log, a state reporting Log, a parameter setting Log, log information of a user operation and a working process, logs of a software internal operation, an operation Log, a window display, a close Log, software start loading, and the like, and the Log recording has a form of storage in a disk file, and a file naming format is "xx minutes xx seconds when xx days xx of xx months of xx years of Log _ xx.
Preferably, the first video file list retrieval module accesses the video files stored in the system where the video recording device is located in a manner of sharing the disk folders of the system where the video recording device is located, and retrieves the required video file list according to the retrieval condition; the retrieval condition is a complete video file name or a part of the video file name;
after a user retrieves a required video file from the first video file list retrieval module, selecting the video file to be played, simultaneously opening two players for playing the video file, selecting any one of the video files by the user, and clicking a 'start playing' button, wherein the console computer automatically searches and opens the other corresponding video file according to the comparison of whether the file name prefixes of the two videos are the same or not;
the first video file playing module plays back local video by utilizing two displays of the console, and the two players respectively display and synchronously play the contents of the two video files in the two displays of the console;
the first video file playing module can realize synchronous playing of video contents in the two players, and can control the two players to fast forward and fast backward simultaneously when playing the video contents, or control the complete synchronization of the video contents played in the two players by dragging a playing progress bar on the first video file playing module;
and after the video is played, when the first video file playing module is exited, the application software of the console computer sends a command of starting to record the video to the video recording equipment through the Ethernet.
Preferably, when the second video file list retrieval module starts to operate, the client sends a command of 'stop recording video' to the video recording device through the ethernet;
the second video file list retrieval module accesses video files stored in a system where the video recording equipment is located in a disk folder sharing mode of the system where the video recording equipment is located, and retrieves a required video file list according to retrieval conditions, wherein the retrieval conditions are complete video file names or a part of the video file names;
the client accesses the video files recorded in the video recording equipment through the Ethernet, acquires all video file lists in the video recording equipment, and remotely downloads the selected video files;
when a user retrieves a required video file from the second video file list retrieval module, the user selects the video file to be played, and simultaneously opens the two players to play the video file, the user selects any one of the video files, and clicks the 'start playing' button, the Windows or Linux client automatically searches and opens the other corresponding video file, and the search basis is to compare whether the file name prefixes of the two videos are the same;
the second video playing module plays back local or remote videos, so that the two players can respectively display and synchronously play the contents of the two video files, and the resolution ratio of the video files is adjusted through the ffmpeg command line;
the second video playing module can control the two players to fast forward and fast backward at the same time when playing the video content, or control the complete synchronization of the video content played in the two players by dragging the playing progress bar on the second video file list retrieval module;
and after the video file content is played back remotely, the second video playing module is quitted, and a command of starting to record the video is sent to the video recording equipment through the Ethernet.
The invention also provides a device designed by the method.
(III) advantageous effects
The device of the invention does not need to destroy or adjust the layout on the original console mouse and keyboard operation platform, and also does not need to frequently plug and pull DVI signal cables during normal work and video playback, thereby realizing the storage and playback of the video signals output by the two monitors of the console. The device has the retrieval function of recorded video files, the recorded video files of two displays can realize synchronous fast forward, synchronous fast backward or synchronous dragging to the same moment when being played, the complete synchronization of the playing of the two video files is ensured, the recorded video files can be remotely played on a console display or downloaded to a Windows or Linux client for local playback through Ethernet, the device has the function of protecting abnormal power-off data, the subsequent expandable function of solid state disk capacity is supported, and the problems that the synchronous video recording operation of the two displays is inconvenient and the reliability is not high on the basis of the hardware of the existing console are solved.
Drawings
FIG. 1 is a schematic view of the apparatus of the present invention;
FIG. 2 is a schematic view of the video recording device of the apparatus of the present invention;
FIG. 3 is a schematic diagram of the configuration of a console computer in the apparatus of the present invention;
FIG. 4 is a schematic diagram of a client in the apparatus of the present invention;
fig. 5 is an overall work flow diagram of the apparatus of the present invention.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
The invention provides a double-channel video recording device which can realize complete recording and synchronous playback of videos output by two displays under the condition of not influencing the normal output of working video images by a control console.
Fig. 1 is a schematic connection diagram of a dual-channel video recording device according to the present invention, where the device includes a video recording device, a console computer, and a Windows or Linux client, and the device can simultaneously acquire and store VGA video signals output by two displays, and recorded video files can be remotely played back on the console display through ethernet or downloaded to the Windows or Linux client for local playback. The device is a video recording function newly added on the basis of original console hardware, and the layout on an original console mouse keyboard operation platform does not need to be damaged or adjusted.
As shown in fig. 2, the video recording apparatus includes:
the self-checking module 11 is used for checking the working state of a video acquisition module 12 and a video storage module 13 of the video recording equipment after the video recording equipment is powered on;
the video acquisition module 12 is connected with the self-checking module 11 and is used for acquiring two-channel VGA signals output by two displays in the console in real time;
and the video storage module 13 is connected with the video acquisition module 12 and is used for performing video format conversion on the two-channel VGA video signal acquired by the video acquisition module 12, generating and naming a video file, segmenting the video file, storing the video file and generating a video file list.
The working state check comprises power-on initialization self-check and power-on periodic self-check, and the self-check content comprises the hardware state, the working state, the health state and the residual storage capacity of a video acquisition module 12 and a video storage module 13 in the video recording equipment; and after each self-check is finished, sending the self-check result to application software in the console computer through the Ethernet.
The computer of the control console, the two displays of the control console and the video recording device are powered on simultaneously, and after the video recording device is powered on, the video acquisition module 12 automatically starts to synchronously acquire the two-channel VGA video signals output by the two displays of the control console.
After the video recording equipment is powered on, the video storage module 13 automatically starts to synchronously store the two-channel VGA video signals output by the two displays of the console; the video storage module 13 names video files recorded by two monitors of the console respectively, creates two file storage threads to process received VGA video data respectively, compresses and encodes the acquired VGA signals of each channel according to the h.264 standard, and then converts the format of the video files into the MP4 format for storage.
The console computer sends the time of the console computer to the video recording device through the Ethernet, and the time synchronization of the two devices is kept. When a video storage module starts to generate a new video file for storing an MP4 format file, the current system time is acquired, the format is 'xx minutes xx seconds when xx month xx and xx day xx of xx year', and the naming specification of a newly generated first display video file is as follows: current system time + N001, i.e., "xx minutes xx seconds N001" in xx years xx months xx days xx; the naming specification of the newly generated second display video file is: current System time + N002, i.e., "xx years xx month xx day xx time xx minutes xx seconds N002".
When the video recording equipment receives a command of starting to record videos, the video recording equipment newly generates two video files named according to the current system time format, and stores video signals which are collected in real time and converted in format into the video files; when the video recording equipment receives a command of stopping recording videos, the video recording equipment stops the recording work of two currently opened video files and closes the two video files. Wherein the "start recording video" command and the "stop recording video" command are sent by the console computer or the Windows/Linux client over the ethernet.
When the size of a stored single video file is larger than 1000MB (software configurable), the video storage module automatically generates a new video file named by the current system time, and can realize the cyclic storage of the video file. The principle of the cycle storage is as follows: when a new storage video file is generated, if the remaining storage space of the solid state disk is in the interval (15%, 20%), deleting the oldest stored video file until the remaining storage space of the solid state disk is more than 20%.
If the console computer is abnormally powered off at the time of T0 (T0 is more than 10 s), the video recording device and the console computer are powered off at the same time, and the video storage module can completely store all video data output by the two displays before the time of T0-10 s. When abnormal power failure occurs, if the self-checking module monitors that the working voltage of the equipment is lower than a specified threshold value, an immediate standby command is sent to the video storage module, the video storage module immediately stops the receiving and writing work of video data, and all data in the receiving buffer area are written into the nonvolatile NAND unit.
The video recording device also has a log recording function and is used for realizing system log recording. The log records comprise a system starting log, an equipment self-checking log, a state reporting log, a parameter setting log, log information of user operation and a working process, and logs of software internal operation, a running log, window display, a closing log, software starting loading and the like. The Log records are stored in a disk file, and the file naming format is 'Log _ xx year xx month xx day xx time xx minute xx second'.
As shown in fig. 3, the console computer includes:
a first video file list retrieval module 21, configured to obtain a video file list in the video recording device;
and the first video file playing module 22 is connected to the first video file list retrieving module 21, and is configured to perform a playing operation and a stop playing operation on video files in the video file list.
The first video file list retrieval module is invoked by application software of the console computer. When the application software of the console computer opens the first video file list retrieval module, the application software of the console computer sends a command of "stop recording video" to the video recording device through the ethernet.
The first video file list retrieval module accesses video files stored in a system where the video recording equipment is located in a mode of sharing a disk folder of the system where the video recording equipment is located, and retrieves a required video file list according to retrieval conditions; wherein, the retrieval condition is the complete video file name or a part of the video file name.
And when the user retrieves the required video file from the first video file list retrieval module, selecting the video file to be played, and simultaneously opening the two players to play the video file. When the user selects any one of the video files, such as the video file of the display 1, and clicks the "start playing" button, the console computer automatically searches and opens the other video file (the video file of the display 2) corresponding to the selected video file, and the search is based on the comparison of whether the file name prefixes of the two videos are the same.
The first video file playing module 22 performs local video playback by using two displays of the console, and the two players respectively display and synchronously play the contents of the two video files in the two displays of the console.
The first video file playing module can realize synchronous playing of video contents in the two players. The first video file playing module can control the two players to fast forward and fast backward at the same time when playing the video content, or control the complete synchronization of the video content played in the two players by dragging the playing progress bar on the first video file playing module. The two players share the following playing components: a play progress bar, a fast forward button, a fast reverse button, a play button, a pause button, and a stop button.
And after the video is played, when the first video file playing module is exited, the application software of the console computer sends a command of starting to record the video to the video recording equipment through the Ethernet.
As shown in fig. 4, the Windows or Linux client includes:
a second video file list retrieval module 31, configured to obtain a video file list in the video recording device;
a video downloading module 32, connected to the second video file list retrieving module 31, for downloading the video file recorded in the video recording device;
and a second video playing module 33 connected to the video downloading module 32, and configured to perform playing operation and stop playing operation on a video file stored locally or remotely.
When the second video file list retrieval module starts to operate, the Windows or Linux client sends a command of stopping recording videos to the video recording device through the Ethernet.
The second video file list retrieval module accesses the video files stored in the system where the video recording equipment is located in a mode of sharing the disk folders of the system where the video recording equipment is located, and retrieves the required video file list according to the retrieval conditions. Wherein, the retrieval condition is a complete video file name or a part of the video file name.
The Windows or Linux client accesses the video files recorded in the video recording equipment through the Ethernet, acquires all video file lists in the video recording equipment, and downloads the selected video files remotely.
And when the user retrieves the required video file from the second video file list retrieval module, selecting the video file to be played, and simultaneously opening the two players to play the video file. When the user selects any one of the video files, such as the video file of the display 1, and clicks the "start playing" button, the Windows or Linux client automatically searches and opens the other corresponding video file (the video file of the display 2), and the search is based on the comparison of whether the file name prefixes of the two videos are the same.
The second video playing module 33 plays back the local or remote video, so that the two players can respectively display and synchronously play the contents of the two video files. The resolution of the video file is adjusted through the ffmpeg command line, and the playing requirement of the Windows or Linux client side is met.
The second video playing module can control the two players to fast forward and fast backward at the same time when playing the video contents, or control the complete synchronization of the video contents played in the two players by dragging the playing progress bar on the second video file list retrieval module. The two players share the following playing components: a play progress bar, a fast forward button, a fast reverse button, a play button, a pause button, and a stop button.
And after the video file content is played back remotely, the second video playing module is quitted, and a command of starting to record the video is sent to the video recording equipment through the Ethernet.
It can be seen that the scheme of the invention can perfectly solve the problems of inconvenient and low reliability of realizing the synchronous video recording operation of two displays on the basis of the hardware of the existing control console. The invention has the function of searching the recorded video files and can realize the synchronous playing control of the video files recorded by the two displays. In addition, the device has the function of protecting abnormal power-off data of the equipment, and supports the capacity of the solid state disk to be expandable.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A design method of a double-channel video recording device is characterized in that the device is designed to comprise video recording equipment, a console computer and a client;
the video recording apparatus includes:
the self-checking module is used for checking the working state of a video acquisition module and a video storage module of the video recording equipment after the video recording equipment is powered on;
the video acquisition module is connected with the self-checking module and is used for acquiring two-channel VGA signals output by two displays in the console in real time;
the video storage module is connected with the video acquisition module and used for converting the video format of the two-channel VGA video signal acquired by the video acquisition module, generating and naming a video file, segmenting the video file, storing the video file and generating a video file list;
the console computer includes:
the first video file list retrieval module is used for acquiring a video file list in the video recording equipment;
the first video file playing module is connected with the first video file list retrieving module and used for playing and stopping playing the video files in the video file list;
the first video file list retrieval module is called by application software of the console computer, and when the application software of the console computer opens the first video file list retrieval module, the application software of the console computer sends a command of stopping recording videos to the video recording equipment through the Ethernet;
the client comprises:
the second video file list retrieval module is used for acquiring a video file list in the video recording equipment;
the video downloading module is connected with the second video file list retrieval module and is used for downloading the video files recorded in the video recording equipment;
and the second video playing module is connected with the video downloading module and is used for carrying out playing operation and stopping playing operation on the video file stored locally or remotely.
2. The method of claim 1, wherein the working state check comprises a power-on initialization self-test and a power-on periodic self-test, and the self-test content comprises hardware states, working states, health states and remaining storage capacities of a video acquisition module and a video storage module in the video recording device; and after each self-check is finished, sending the self-check result to application software in a computer of the console through the Ethernet.
3. The method of claim 1, wherein the console computer, the two monitors of the console, and the video recording device are powered on simultaneously, and wherein the video capture module automatically begins to capture the dual channel VGA video signals output by the two monitors of the console simultaneously after the video recording device is powered on.
4. The method of claim 1, wherein the video storage module automatically begins to synchronize the two-channel VGA video signals output by the two displays of the console when the video recording device is powered on; the video storage module names video files recorded by two monitors of the console respectively, creates two file storage threads to process received VGA video data respectively, firstly carries out compression coding on the collected VGA signal of each channel according to the H.264 standard, and then converts the format of the video file into the MP4 format for storage.
5. The method of claim 1, wherein the console computer sends the time of the console computer to the video recording device via ethernet, and keeps time synchronization between the two devices, and the video storage module obtains the current system time when starting to generate a new video file for storing an MP4 format file, the format being "xx minutes xx seconds when xx month xx days xx in xx years, xx minutes xx seconds", and the naming specification of the newly generated first display video file is: current system time + N001, i.e., "xx minutes xx seconds N001 in xx years xx months xx days xx"; the naming specification of the newly generated second display video file is: current System time + N002, i.e., "xx years xx month xx day xx time xx minutes xx seconds N002".
6. The method of claim 1, wherein when the video recording device receives a "start recording video" command, the video recording device newly generates two video files named in the current system time format and stores the video signals acquired in real time and converted in format in the video files; when the video recording equipment receives a command of stopping recording videos, the video recording equipment stops the recording work of two currently opened video files and closes the two video files, wherein the command of starting recording videos and the command of stopping recording videos are sent by a console computer or a client through Ethernet;
when the size of a single stored video file is larger than 1000MB, the video storage module automatically generates a new video file named by the current system time, and can realize the cyclic storage of the video file, and the cyclic storage principle is as follows: when a new storage video file is generated, if the residual storage space of the solid state disk is in a (15%, 20%) interval, deleting the video file stored earliest until the residual storage space of the solid state disk is more than 20%;
if the console computer is abnormally powered off at the time of T0, the video recording device and the console computer are simultaneously powered off, the video storage module can completely store all video data output by the two displays before the time of T0-10s, and when the abnormal power off occurs, the self-checking module monitors that the working voltage of the device is lower than a specified threshold value, an 'immediate standby' command is sent to the video storage module, the video storage module immediately stops the receiving and writing work of the video data, and all data in the receiving buffer area are written into the nonvolatile NAND unit.
7. The method of claim 1, wherein the video recording device further has a Log recording function, and is configured to implement system Log recording, where the Log recording includes a system start Log, a device self-check Log, a status report Log, a parameter setting Log, log information of a user operation and a working process, logs of a software internal operation, an operation Log, a window display, a closing Log, and a software start loading, and the Log recording has a form of disk file storage, and a file naming format is "Log _ xx year xx month xx day xx time xx minute xx second".
8. The method of claim 1, wherein the first video file list retrieval module accesses video files stored in the system where the video recording device is located by means of sharing a disk folder of the system where the video recording device is located, and retrieves a required video file list according to retrieval conditions; the retrieval condition is a complete video file name or a part of the video file name;
after a user retrieves a required video file from the first video file list retrieval module, selecting the video file to be played, simultaneously opening two players for playing the video file, selecting any one of the video files by the user, and clicking a 'start playing' button, wherein the console computer automatically searches and opens the other corresponding video file according to the comparison of whether the file name prefixes of the two videos are the same or not;
the first video file playing module plays a local video by utilizing two displays of the control console, and the two players respectively display and synchronously play the contents of the two video files in the two displays of the control console;
the first video file playing module can realize synchronous playing of video contents in the two players, and can control the two players to fast forward and fast backward at the same time when playing the video contents, or drag a playing progress bar on the first video file playing module to control the complete synchronization of the video contents played in the two players;
and after the video is played, when the first video file playing module is quitted, the application software of the console computer sends a command of 'starting to record the video' to the video recording equipment through the Ethernet.
9. The method of claim 1, wherein when the second video file list retrieval module starts to run, the client sends a "stop recording video" command to the video recording device via ethernet;
the second video file list retrieval module accesses video files stored in a system where the video recording equipment is located in a mode of sharing a disk folder of the system where the video recording equipment is located, and retrieves a required video file list according to retrieval conditions, wherein the retrieval conditions are complete video file names or part of the video file names;
the client accesses the video files recorded in the video recording equipment through the Ethernet, acquires all video file lists in the video recording equipment, and remotely downloads the selected video files;
when a user retrieves a required video file from the second video file list retrieval module, selecting the video file to be played, simultaneously opening two players to play the video file, selecting any one of the video files by the user, and clicking a 'start playing' button, wherein the Windows or Linux client automatically searches and opens another video file corresponding to the selected video file according to the comparison of whether the file name prefixes of the two videos are the same or not;
the second video playing module plays back local or remote videos, so that the two players can respectively display and synchronously play the contents of the two video files, and the resolution of the video files is adjusted through the ffmpeg command line;
the second video playing module can control the two players to fast forward and fast backward at the same time when playing the video content, or control the complete synchronization of the video content played in the two players by dragging the playing progress bar on the second video file list retrieval module;
and after the video file content is played back remotely, the second video playing module is quitted, and a command of starting to record the video is sent to the video recording equipment through the Ethernet.
10. A device designed using the method of any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211185628.4A CN115766986A (en) | 2022-09-27 | 2022-09-27 | Double-channel video recording device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211185628.4A CN115766986A (en) | 2022-09-27 | 2022-09-27 | Double-channel video recording device |
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| CN115766986A true CN115766986A (en) | 2023-03-07 |
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| CN202211185628.4A Pending CN115766986A (en) | 2022-09-27 | 2022-09-27 | Double-channel video recording device |
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