CN115314731B - Video processing system, method, computer device, and storage medium - Google Patents
Video processing system, method, computer device, and storage medium Download PDFInfo
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- 238000012545 processing Methods 0.000 title claims abstract description 109
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- 238000012216 screening Methods 0.000 claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 230000009467 reduction Effects 0.000 claims description 29
- 238000004590 computer program Methods 0.000 claims description 14
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- 238000010586 diagram Methods 0.000 description 8
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- 238000001914 filtration Methods 0.000 description 2
- 238000005549 size reduction Methods 0.000 description 2
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Abstract
The application relates to the field of video processing, in particular to a video processing system, a method, computer equipment and a storage medium, wherein the video processing system comprises at least one video input unit and at least two video processing units; the video input unit includes: the first shrinking module is used for shrinking part of video frames in the first video stream and outputting a second video stream containing at least two video frames with different sizes; the video processing unit includes: the device comprises a size screening module, a second shrinking module and at least two video transmission channels. When the system is in a first working mode, the output end of the video input unit is connected with two video processing units, wherein the size screening module of one video processing unit is in a closed state, and the second shrinking module is in an open state; the size screening module of the other video processing unit is in an on state, and the second shrinking module is in an off state. The application reduces the data processing amount and avoids the problems of clamping and the like caused by untimely video stream processing.
Description
Technical Field
The present application relates to the field of video processing, and in particular, to a video processing system, method, computer device, and storage medium.
Background
DVR, collectively referred to as Digital Video Recorder (hard disk recorder), is often referred to as hard disk recorder, also referred to as DVR, because hard disk recording is employed in contrast to conventional analog video recorders. The DVR integrates five functions of a video recorder, a picture divider, a cloud deck lens control, alarm control and network transmission, can replace the functions of a large stack of equipment of an analog monitoring system by one equipment, and gradually has advantages and popularity in price.
The DVR comprises a video processing unit, wherein the video processing unit is a DVR special chip with the functions of video acquisition, video processing, encoding, decoding, display output, universal peripheral interfaces and the like. In the prior art, a video processing unit processes an input video stream, processes the video stream into video frames with different sizes, outputs and encodes the video frames, and the processing pressure of the video processing unit is high due to the large input quantity of the video stream, so that the video stream is not processed timely, and problems of blocking, time delay and the like are caused.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a video processing system, method, apparatus, and storage medium that address the above-described issues.
In a first aspect, an embodiment of the present invention proposes a video processing system, including at least one video input unit and at least two video processing units; wherein,
The video input unit includes: the first shrinking module is used for shrinking part of video frames in the input first video stream according to the preset video frame size and outputting a second video stream containing at least two video frames with different sizes;
The video processing unit includes: the size screening module is connected to the output end of the first shrinking module and is used for screening the video frames of the second video stream according to the size and outputting a third video stream; the input end is connected with a second reduction module of the size screening module and is used for carrying out reduction processing on the third video stream according to a preset reduction multiple to obtain a fourth video stream; at least two video transmission channels connected to the output end of the second shrinking module are used for shrinking the corresponding fourth video stream according to respective requirements;
When the system is in a first working mode, the output end of the video input unit is connected with two video processing units, wherein the size screening module of one video processing unit is in a closed state, and the second shrinking module is in an open state; wherein the size filtering module of another video processing unit is in an on state, and the second shrinking module is in an off state
In an embodiment, the first scaling module includes:
The line shrinking module is used for carrying out line shrinking processing on partial video frames in the input first video stream according to the preset video frame size;
And the line loss module is used for carrying out line loss processing on the video frames subjected to line reduction processing according to the preset video frame size.
In one embodiment, the video transmission channel includes:
The input end is connected with a second frame rate control module of the second shrinking module and is used for controlling a corresponding fourth video stream output by the second shrinking module according to a preset frame rate;
And the input end is connected with a channel shrinking module of the second frame rate control module and is used for shrinking the corresponding fourth video stream.
In an embodiment, the video processing unit further comprises:
The input end is connected with the first shrinking module, the output end is connected with the first frame rate control module of the size screening module, and the first frame rate control module is used for controlling the second video stream output by the first shrinking module according to the preset frame rate.
In an embodiment, when the system is in the second working mode, the output end of the video input unit is connected with a video processing unit, the first shrinking module of the video input unit is in a closed state, and the size screening module and the second shrinking module of the video processing unit are in a closed state.
In a second aspect, an embodiment of the present invention provides a video processing method, which is applied to the video processing system, including:
determining a working mode of the system based on the acquired parameter information, wherein the working mode comprises a first working mode and a second working mode;
When the system is in a first working mode, the output end of the video input unit is controlled to be connected with two video processing units, the size screening module of one video processing unit is controlled to be in a closed state, and the second shrinking module is controlled to be in an open state; controlling the size screening module of the other video processing unit to be in an on state, and controlling the second shrinking module to be in an off state;
When the system is in the second working mode, the output end of the video input unit is controlled to be connected with a video processing unit, the first shrinking module of the video input unit is controlled to be in a closed state, and the size screening module and the second shrinking module of the video processing unit are controlled to be in the closed state.
In an embodiment, the parameter information includes a video coding frame rate of the first video stream, and the determining the operation mode of the system based on the acquired parameter information includes:
determining whether a video encoding frame rate setting of the first video stream is greater than a set multiple of a first video stream frame rate;
If yes, determining the working mode of the system as a second working mode; if not, determining the working mode of the system as a first working mode.
In an embodiment, the parameter information includes a display preview picture corresponding to the first video stream, and the determining the working mode of the system based on the acquired parameter information includes:
Determining whether a display preview picture corresponding to the first video stream is larger than a setting picture or not;
If yes, determining the working mode of the system as a second working mode; if not, determining the working mode of the system as a first working mode.
In a third aspect, an embodiment of the present invention proposes a computer device comprising a memory storing a computer program and a processor implementing the steps of the method of the second aspect when the processor executes the computer program.
In a fourth aspect, embodiments of the present invention provide a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method of the second aspect.
When the system is in the first working mode, the first shrinking module shrinks partial video frames in the input first video stream according to the preset video frame size, and outputs a second video stream containing at least two video frames with different sizes, one path of the second video stream is processed by the second shrinking module, is processed by the video transmission channel and is output to the display unit, the display unit displays video streams with different sizes, the other path of the second video stream is processed by the size screening module, is processed by the video transmission channel and is output to the coding unit, and the coding unit codes the received video streams, so that the display of the video streams with different sizes is realized. The invention reduces the data processing amount and avoids the problems of blocking, time delay and the like caused by untimely processing of the video stream.
Drawings
FIG. 1 is a schematic diagram of a video processing system in one embodiment;
FIG. 2 is a schematic diagram illustrating connection of a first shrinking module according to one embodiment;
FIG. 3 is a schematic diagram of the connection of video transmission channels in one embodiment;
FIG. 4 is a schematic diagram showing connection of video processing units in another embodiment;
FIG. 5 is a schematic diagram of a connection of a video processing system in a first mode of operation in one embodiment;
FIG. 6 is a schematic diagram of a connection of a video processing system in a second mode of operation in one embodiment;
Fig. 7 is an internal structural diagram of a computer device in one embodiment.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
In an embodiment, as shown in fig. 1, a video processing system 1 is provided, comprising at least one video input unit 10 and at least two video processing units 20; wherein the video input unit 10 includes: a first shrinking module 11, configured to shrink a portion of video frames in an input first video stream according to a preset video frame size, and output a second video stream including at least two video frames with different sizes; the video processing unit 20 includes: the size screening module 21 is connected to the output end of the first shrinking module 11, and is configured to perform screening processing on the video frames of the second video stream according to the size and output a third video stream; the input end is connected with a second shrinking module 22 of the size screening module 21, and is used for shrinking the third video stream according to a preset shrinking multiple to obtain a fourth video stream; at least two video transmission channels 23 connected to the output end of the second shrinking module 22 are used for shrinking the corresponding fourth video stream according to the respective requirements.
Compared with the original first video stream, the data volume of the first video stream subjected to the reduction processing by the first reduction module is smaller, so that the data processing volume of the video processing unit is reduced, and the problems of blocking, time delay and the like caused by untimely processing of the video stream are avoided.
The video processing unit has processing capabilities of scaling, noise reduction and the like on the image, and can output a plurality of video streams with different sizes after processing one input video stream. The plurality of different sized video streams may be of a full size, 1/2 of a full size, etc. In this embodiment, since the first shrinking module performs shrinking processing on a portion of video frames in the first video stream according to a preset video frame size, the video processing unit performs shrinking again on the basis of the second video stream, and the first shrinking module only needs to shrink by a smaller multiple compared with the original first video stream, thereby further reducing the data processing amount of the video processing unit and avoiding problems such as blocking and delay caused by untimely video stream processing.
The second shrinking module adopts a pre-shrinking mode, that is, the second shrinking module only supports the shrinking of fixed times, for example, only supports the 1/2 shrinking of each width and height, and has small processing complexity and low performance cost when compared with the first shrinking module for shrinking any size. Therefore, in this embodiment, the reduction mode of combining any size reduction and pre-reduction is adopted, and the complexity and the performance overhead are small compared with the case of adopting any size reduction processing.
In one embodiment, as shown in fig. 2, the first scaling module 11 includes a line acquisition module 111 for acquiring a first video stream; a line shrinking module 112, configured to perform line shrinking processing on a portion of video frames in the input first video stream according to a preset video frame size; the line loss module 113 is configured to perform line loss processing on the video frame after the line reduction processing according to a preset video frame size.
The line acquisition module 111 sequentially analyzes data input by an external video input bus (such as BT 656) according to a protocol according to lines to obtain line effective image data, and stores the line effective image data to obtain a first video stream.
The line shrinking module 112 performs shrinking processing on the first video stream data obtained by the line acquisition module according to the real-time configuration of the user and the preset video frame size. The method of scaling down in the present embodiment is not limited, and may be scaled down by a filter or by a point-loss method. The reduction factors are not limited in this embodiment, and may support one or more of 1/2 reduction, 1/3 reduction, 1/4 reduction, and the like.
For 1/2 reduction, frame-separated reduction may be used, for example, all rows belonging to the frame are scaled, all rows of the next frame are not scaled, and then the next frame is scaled again, so doing. The same manner of reduction can be adopted for 1/3 reduction, 1/4 reduction, and the like.
It should be noted that, the line reduction module 112 may output the second video stream of two video frames with different sizes, or may output the second video stream of a plurality of video frames with different sizes, which may be specifically set according to actual needs. For example, a second video stream of full-size, 1/2 full-size, 1/4 full-size video frames is output.
The line loss module 113 discards or writes the result processed by the line reduction module into the DDR frame buffer. It will be appreciated that the line reduction module implements a lateral reduction of the video frame, while the line loss module implements a longitudinal reduction of the video frame.
In one embodiment, as shown in fig. 3, the video transmission channel 23 includes: the input end is connected with a second frame rate control module 231 of the second shrinking module 22, and is used for controlling the corresponding fourth video stream output by the second shrinking module 22 according to a preset frame rate; the input end is connected to the channel shrinking module 232 of the second frame rate control module 231, and is configured to perform shrinking processing on the corresponding fourth video stream.
According to the display requirements of the display windows connected with the video streaming device, the second frame rate control module 231 controls the frame rate of the corresponding fourth video streaming device, and the channel shrinking module 232 performs shrinking processing on the corresponding fourth video streaming device.
In one embodiment, as shown in fig. 4, the video processing unit 20 further includes: the input end is connected with the first shrinking module 11, and the output end is connected with the first frame rate control module 24 of the size screening module 21, and the first frame rate control module is used for controlling the second video stream output by the first shrinking module according to the preset frame rate.
In order to meet the requirement of video stream playing, the first frame rate control module is used for controlling the second video stream output by the first reduction module according to a preset frame rate, and the specific frame rate control mode can be frame loss control and the like.
Since not all video streams can be processed in the above-described scaling-down manner, in this embodiment, the video processing system includes a first operation mode and a second operation mode.
As shown in fig. 5, when the system is in the first operation mode, the output terminal of the video input unit 10 is connected to two video processing units 20. The size screening module of one video processing unit is in a closed state, and the second shrinking module is in an open state; the size screening module of the other video processing unit is in an on state, and the second shrinking module is in an off state.
As shown in fig. 6, when the system is in the second operation mode, the output end of the video input unit 10 is connected to a video processing unit 20, the first shrinking module of the video input unit is in a closed state, and the size filtering module and the second shrinking module of the video processing unit are in a closed state.
When the system is in the first working mode, the working process is as follows: the first shrinking module performs shrinking processing on partial video frames in the input first video stream according to the preset video frame size, outputs a second video stream containing at least two video frames with different sizes, one path of the second video stream is processed by the second shrinking module, then is processed by a video transmission channel and is output to a display unit, the display unit displays the video stream, the other path of the second video stream is processed by a size screening module, then is processed by the video transmission channel and is output to a coding unit, and the coding unit performs coding processing on the received video stream.
When the system is in the second working mode, the working process is as follows: the video input unit does not process the first video stream, the size screening module and the second shrinking module do not process the video stream, and the video processing unit sends the video stream to the coding unit and the display unit which are connected to the output end for processing respectively.
The working mode of the video processing system is determined by the video coding frame rate of the first video stream or the display preview picture corresponding to the first video stream.
When the video encoding frame rate of the first video stream is set to be greater than half the frame rate of the first video stream, this case cannot employ the first operation mode because the output of the video processing unit for encoding is only half the frame rate of the first video stream at maximum when the first scaling module is set to scale every other frame in the first operation mode.
And when the displayed preview picture corresponding to the first video stream is a large picture, adopting a second working mode. For example, when the video transmission channel is displayed in a single picture and full screen, the large picture can be previewed. The determination condition of previewing the large screen can be customized according to the actual requirement of the product, which is only an example and not a limitation.
In an embodiment, a video processing method is provided, and an application scenario of the method in fig. 1 is taken as an example for explanation, including: and determining the working modes of the system based on the acquired parameter information, wherein the working modes comprise a first working mode and a second working mode.
When the system is in a first working mode, the output end of the control video input unit is connected with two video processing units, the size screening module of one video processing unit is controlled to be in a closed state, and the second shrinking module is controlled to be in an open state; controlling the size screening module of the other video processing unit to be in an on state, and controlling the second shrinking module to be in an off state; when the system is in the second working mode, the output end of the control video input unit is connected with a video processing unit, the first shrinking module of the control video input unit is in a closing state, and the size screening module and the second shrinking module of the control video input unit are in a closing state.
In this embodiment, the working mode of the system is determined based on the obtained parameter information, so as to realize the switching of the working modes, and meanwhile, when the system is in the first working mode, the data processing capacity of the video processing unit is reduced, and the problems of blocking, delay and the like caused by untimely video stream processing are avoided.
In one embodiment, the parameter information includes a video encoding frame rate of the first video stream, and determining the operating mode of the system based on the acquired parameter information includes:
determining whether a video encoding frame rate setting of the first video stream is greater than a set multiple of the first video stream frame rate; if yes, determining the working mode of the system as a second working mode; if not, determining the working mode of the system as a first working mode.
In an embodiment, the parameter information includes a display preview screen corresponding to the first video stream, and determining the operation mode of the system based on the acquired parameter information includes:
determining whether a displayed preview picture corresponding to the first video stream is larger than a set picture; if yes, determining the working mode of the system as a second working mode; if not, determining the working mode of the system as a first working mode.
Specific limitations regarding the method may be found in the limitations of the system above and will not be described in detail herein. Each of the modules in the above-described apparatus may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, a computer device is provided, which may be a server, and the internal structure of which may be as shown in fig. 7. The computer device includes a processor, a memory, and a network interface connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the computer device is for storing motion detection data. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement the steps of any of the video processing method embodiments described above.
It will be appreciated by those skilled in the art that the structure shown in FIG. 7 is merely a block diagram of some of the structures associated with the present inventive arrangements and is not limiting of the computer device to which the present inventive arrangements may be applied, and that a particular computer device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.
In an embodiment, a computer device is provided, comprising a memory and a processor, the memory having stored therein a computer program, the processor implementing the steps of any of the method embodiments described above when the computer program is executed.
In an embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when executed by a processor, carries out the steps of any of the method embodiments described above.
Those skilled in the art will appreciate that implementing all or part of the above-described methods in accordance with the embodiments may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, or the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory. By way of illustration, and not limitation, RAM can be in various forms such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), etc.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (8)
1. A video processing system comprising at least one video input unit and at least two video processing units; wherein,
The video input unit includes: the first shrinking module is used for shrinking part of video frames in the input first video stream according to the preset video frame size and outputting a second video stream containing at least two video frames with different sizes;
The video processing unit includes: the size screening module is connected to the output end of the first shrinking module and is used for screening the video frames of the second video stream according to the size and outputting a third video stream; the input end is connected with a second reduction module of the size screening module and is used for carrying out reduction processing on the third video stream according to a preset reduction multiple to obtain a fourth video stream; at least two video transmission channels connected to the output end of the second shrinking module are used for shrinking the corresponding fourth video stream according to respective requirements;
the working mode of the system is determined based on the acquired parameter information;
The parameter information includes a video encoding frame rate of the first video stream, and the operating mode of the system is determined based on:
determining whether a video encoding frame rate setting of the first video stream is greater than a set multiple of a first video stream frame rate;
If yes, determining the working mode of the system as a second working mode; if not, determining the working mode of the system as a first working mode;
When the system is in the first working mode, the output end of the video input unit is connected with two video processing units, the size screening module of one video processing unit is in a closed state, the second shrinking module is in an open state, and the output corresponding fourth video is processed through the video transmission channel and then is output to the display unit; the size screening module of the other video processing unit is in an on state, the second shrinking module is in an off state, and the output corresponding fourth video flows through the video transmission channel to be processed and then is output to the encoding unit;
the first scaling module includes: the line shrinking module is used for carrying out line shrinking processing on partial video frames in the input first video stream according to the preset video frame size; and the line loss module is used for carrying out line loss processing on the video frames subjected to line reduction processing according to the preset video frame size.
2. The system of claim 1, wherein the video transmission channel comprises:
The input end is connected with a second frame rate control module of the second shrinking module and is used for controlling a corresponding fourth video stream output by the second shrinking module according to a preset frame rate;
And the input end is connected with a channel shrinking module of the second frame rate control module and is used for shrinking the corresponding fourth video stream.
3. The system of claim 1, wherein the video processing unit further comprises:
The input end is connected with the first shrinking module, the output end is connected with the first frame rate control module of the size screening module, and the first frame rate control module is used for controlling the second video stream output by the first shrinking module according to the preset frame rate.
4. The system of claim 1, wherein the system further comprises a controller configured to control the controller,
When the system is in the second working mode, the output end of the video input unit is connected with a video processing unit, the first shrinking module of the video input unit is in a closing state, and the size screening module and the second shrinking module of the video processing unit are in closing states.
5. A video processing method applied to the video processing system according to any one of claims 1 to 4, comprising:
determining a working mode of the system based on the acquired parameter information, wherein the working mode comprises a first working mode and a second working mode;
When the system is in a first working mode, the output end of the video input unit is controlled to be connected with two video processing units, the size screening module of one video processing unit is controlled to be in a closed state, and the second shrinking module is controlled to be in an open state; controlling the size screening module of the other video processing unit to be in an on state, and controlling the second shrinking module to be in an off state;
When the system is in the second working mode, the output end of the video input unit is controlled to be connected with a video processing unit, the first shrinking module of the video input unit is controlled to be in a closed state, and the size screening module and the second shrinking module of the video processing unit are controlled to be in the closed state.
6. The method of claim 5, wherein the parameter information includes a display preview screen corresponding to the first video stream, and wherein determining the operating mode of the system based on the acquired parameter information includes:
Determining whether a display preview picture corresponding to the first video stream is larger than a setting picture or not;
If yes, determining the working mode of the system as a second working mode; if not, determining the working mode of the system as a first working mode.
7. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, carries out the steps of the method according to any one of claims 5 to 6.
8. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 5 to 6.
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| CN202210716933.5A CN115314731B (en) | 2022-06-23 | Video processing system, method, computer device, and storage medium |
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| CN202210716933.5A CN115314731B (en) | 2022-06-23 | Video processing system, method, computer device, and storage medium |
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| CN115314731B true CN115314731B (en) | 2024-06-25 |
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| CN109314780A (en) * | 2016-06-02 | 2019-02-05 | Biamp系统公司 | System and method for Bandwidth-Constrained transmission of video |
| CN113784227A (en) * | 2020-06-10 | 2021-12-10 | 北京金山云网络技术有限公司 | Video slicing method and device, electronic equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102821303A (en) * | 2012-08-31 | 2012-12-12 | 哈尔滨工程大学 | Network real-time graded compression and transmission method for pixel-level video information |
| CN109314780A (en) * | 2016-06-02 | 2019-02-05 | Biamp系统公司 | System and method for Bandwidth-Constrained transmission of video |
| CN113784227A (en) * | 2020-06-10 | 2021-12-10 | 北京金山云网络技术有限公司 | Video slicing method and device, electronic equipment and storage medium |
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