CN108111870A - A kind of method for processing video frequency and device - Google Patents
A kind of method for processing video frequency and device Download PDFInfo
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- CN108111870A CN108111870A CN201711456592.8A CN201711456592A CN108111870A CN 108111870 A CN108111870 A CN 108111870A CN 201711456592 A CN201711456592 A CN 201711456592A CN 108111870 A CN108111870 A CN 108111870A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/21—Server components or server architectures
- H04N21/218—Source of audio or video content, e.g. local disk arrays
- H04N21/2187—Live feed
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4334—Recording operations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
- H04N21/64322—IP
Abstract
The embodiment of the invention discloses a kind of method for processing video frequency and devices.Wherein, this method includes：The HD video data collected in real time are pre-processed, obtain normal video data；The normal video data is sent to by the first coding module and the second coding module by the first default thread and the second default thread parallel；The first coding is carried out by first coding module to the normal video data received to obtain treating the video data packet that network is sent；Second coding is carried out to the normal video data received by second coding module and obtains video file to be stored.Video data is handled simultaneously by parallel encoding module to be independent of each other, and can solve demand of the video compress to network transmission and local two aspects of video recording well.Further, since video data is handled using parallel encoding module, it is ensured that if one of module due to inside and outside after causing hang-up, do not interfere with the processing of another module, i.e., it is safe.
Description
Technical field
The present embodiments relate to digital communication technology field more particularly to a kind of method for processing video frequency and device.
Background technology
At present, it is long-range educate for scientific research institution, educational institution and hospital etc. with the development of electronic technology
While live streaming, the video data of live streaming need to be recorded to back up for the ease of researching and analysing later.
By in hospital surgical teaching live video while exemplified by recording image data, existing common educational surgery demonstration product is used
Transmission medium divides, and one kind is by optical fiber solutions, lossless compression is transferred to Demonstration Classroom, it is ensured that image original quality, but
Have to be by drawing optical fiber to Demonstration Classroom, if encountered apart from distant situation, cost and construction are all very high.Another kind is
Audio and video are transmitted by the existing IP network of hospital, the cost and construction cost of this method are very low, but are limited to hospital's net
Network, the network bandwidth that vacant can get off is very limited, so after to encoding video pictures processing, some details need fuzzy
Change, transmission can be stablized in limited network bandwidth.When video after coding according to the requirement for being limited to network transmission
Data are saved in video file, and since some details are ignored, considerable damage is caused to medical research.Meanwhile
It is particularly same if usually requiring that video stream bandwidth usually all in more than 20M by the way of clarity is retained come compressed data
When transmitting multi-path video, it is too high to the network requirement of hospital, it is very difficult to meet stablize transmission requirement.
The content of the invention
An embodiment of the present invention provides a kind of method for processing video frequency and devices, can be very good to solve video compress to network
Transmission and the demand of local two aspects of video recording, to reach preferable effect.
In a first aspect, an embodiment of the present invention provides a kind of method for processing video frequency, this method includes：
The HD video data collected in real time are pre-processed, obtain normal video data；
The normal video data is sent to by the first coding mould by the first default thread and the second default thread parallel
Block and the second coding module；
The first coding is carried out by first coding module to the normal video data received to obtain treating network
The video data packet of transmission；
The second coding of normal video data progress received is obtained by second coding module to be stored
Video file.
Second aspect, an embodiment of the present invention provides a kind of video process apparatus, which includes：
Preprocessing module for being pre-processed to the HD video data collected in real time, obtains normal video data；
Data transmission blocks, for passing through the first default thread and the second default thread parallel by the normal video data
It is sent to the first coding module and the second coding module；
Data packet acquisition module carries out the normal video data received for passing through first coding module
First coding obtains treating the video data packet that network is sent；
Video file acquisition module, for pass through second coding module to the normal video data that receives into
The coding of row second obtains video file to be stored.
A kind of method for processing video frequency and device provided in an embodiment of the present invention, it is pre- by using the first default thread and second
If normal video data is sent to the first coding module and the second coding module i.e. two by the different thread parallel of thread i.e. two
A different coding module handles normal video data, so as to obtain treating video data packet that network sends and to be stored
Video file.By parallel coding module for different demands, while handle video data and be independent of each other, it can be fine
Solution video compress to the demand of network transmission and local two aspects of video recording, to reach preferable effect.Further, since it adopts
Normal video data is handled with parallel encoding module, it is ensured that as one of module causes to hang due to inside and outside
After rising, do not interfere with the processing of another module, i.e., it is safe.
Description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, of the invention is other
Feature, objects and advantages will become more apparent upon：
Fig. 1 is a kind of flow chart for method for processing video frequency that the embodiment of the present invention one provides；
Fig. 2 is a kind of flow chart of method for processing video frequency provided by Embodiment 2 of the present invention；
Fig. 3 is a kind of structure diagram for video process apparatus that the embodiment of the present invention three provides.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limitation of the invention.It also should be noted that in order to just
Part related to the present invention rather than entire infrastructure are illustrated only in description, attached drawing.
Embodiment one
Fig. 1 is a kind of flow chart for method for processing video frequency that the embodiment of the present invention one provides, and the present embodiment is applicable to regard
Frequency, to ensure to be carried out at the same time the high-definition situation for the video record data locally recorded a video, is such as cured during remote living broadcast
In institute's educational surgery demonstration live video simultaneously recording image data.This method can be handled by video provided in an embodiment of the present invention and filled
It puts to perform, which can be used software and/or the mode of hardware is realized.Referring to Fig. 1, this method specifically includes：
S110 pre-processes the HD video data collected in real time, obtains normal video data.
Since the color space in the HD video data that generally collect may disunity or with subsequently carrying out at coding
The color space of the encoder of reason is inconsistent, therefore, HD video data need to be pre-processed, to be unified and met volume
Video data, that is, normal video data of code device normal video color space.Wherein, normal video data refers to that programmable device can
The video color space of identification.
Illustratively, before being pre-processed to the HD video data collected in real time, can also include：Pass through acquisition
Thread gathers HD video data from collecting device in real time.
Wherein, collecting device can be capture card, video camera, USB camera, web camera etc..Collecting thread be from
The thread for gathering HD video data in collecting device and establishing.Illustratively, in hospital surgical teaching live video simultaneously
Exemplified by recording image data, collecting thread refers to that operating room terminal is established to collect HD video data from collecting device
Thread.
Normal video data is sent to the first coding mould by S120 by the first default thread and the second default thread parallel
Block and the second coding module.
Wherein, the first coding module can be realized by software, can also pass through hardware realization such as the first encoder.It is preferred that
, the first coding module can be H264 encoders；Second coding module can be identical with the first coding module, can not also
Together.Optionally, in order to reduce the calculation amount pre-processed to the HD video data collected, preferably the first coding module with
Second coding module is identical.First default thread is that normal video data is sent to the corresponding passage of the first coding module；Class
As, the second default thread is that normal video data is sent to the corresponding passage of the second coding module.Use coding of the same race
Module such as H264 encoders are placed in different threads to handle normal video data.
In hospital surgical teaching live video while exemplified by recording image data, due to limited network bandwidth, to cure
Institute is by existing IP (Internet Protocol, Internet protocol) network the video data transmission after audio/video coding
While to Demonstration Classroom terminal, the video data after coding is subjected to local video recording, i.e., video counts are completed using single thread simultaneously
According to transmission and local record a video, it may appear that the video data clarity that preserves is not high, transmission of video is unstable and transmission and
Phenomena such as local video process influences each other.
Wherein, Demonstration Classroom terminal is to receive video data packet to be played to be decoded the broadcasting end of display.Specifically,
In long-distance video teaching, the terminal that user is used to receive instructional video data packet to be played by network is referred to as Demonstration Classroom end
End.Such as by hospital surgical teaching live video simultaneously exemplified by recording image data, Demonstration Classroom terminal be for hospital student,
Medical staff etc. shows that doctor is the picture that patient performs an operation, and demonstration teaching is realized with this.Wherein, video data packet to be played is
Video data after coding, alternatively referred to as treats the video data packet that network is sent, i.e. operating room terminal IP based network will encode
Video data afterwards is sent to Demonstration Classroom terminal.
Therefore, in the case of limited network bandwidth, in order to ensure that normal video data can stablize is transferred to phase
The place the answered and video file that preserves has high clarity.The present embodiment employs two different thread parallels will
Pretreated normal video data is sent to the first coding module and the second coding module, i.e., for different demands such as hospital
Two kinds of demands of live video data are recorded simultaneously in teaching live streaming to handle using different thread parallels so that the first coding module
It is independent of each other each other with the second coding module, can reach the purpose that both network transmission and local video recording are taken into account；In addition, carry out
During the teaching of narrowband internet, even if the bandwidth of network transmission is set as extremely low value, shadow will not be generated to the quality locally recorded a video
It rings, still can ensure the utmost sharpness of local video.
S130 carries out the normal video data received by the first coding module the first coding and obtains treating that network is sent
Video data packet.
Wherein, video data packet is according to the compression obtained after certain encryption algorithm coded treatment by the first coding module
Data；First is encoded to according to default coding parameter to normal video data progress coded treatment, is specifically as follows with frame per second
Order is packaged into data packet and normal video data is compressed.Wherein, coding parameter can include：Resolution ratio, frame per second, code
Flow velocity degree and Coding Compression Algorithm etc..What is obtained after being encoded due to the first coding module treats that the video data packet that network is sent need to lead to
It crosses network transmission to Demonstration Classroom terminal and is decoded display, therefore, Coding Compression Algorithm need to expire used by the first coding module
The requirement of sufficient network transmission, and it is inclined to movement in real time, ensure lowest latency.
Illustratively, the first coding is carried out to the normal video data received by the first coding module to obtain treating network
After the video data packet of transmission, it can also include：It will treat that the video data packet that network is sent is sent to the progress of Demonstration Classroom terminal
Decoding display.
S140 carries out the second coding to the normal video data received by the second coding module and obtains record to be stored
As file.
Wherein, video file is alternatively referred to as " backup file ", to have certain video format to can be used for repeating playing
Video image；Second be encoded to according to default coding parameter to normal video data carry out coded treatment, be specifically as follows with
Default video format is packaged video data and normal video data is compressed.Wherein, default video format can be MP4,
The video formats such as AVI；Coding parameter can include：Resolution ratio, frame per second, speed bit stream and Coding Compression Algorithm etc. are compiled with first
The type of coding parameter involved in code can be identical, but corresponding numerical value is different with Coding Compression Algorithm.Specifically, second compiles
Coding Compression Algorithm involved in code needs to meet the requirement being locally stored, that is, is partial to fine definition, high fluency, with maximum
Limit ensures for the purpose of image quality.Meanwhile second coding in speed bit stream generally than first encode in speed bit stream it is big,
If the speed bit stream in the second coding may be configured as 15-20M, corresponding, the speed bit stream in the first coding is arranged to 6-8M i.e.
Achievable real-time stabilization is transmitted to Demonstration Classroom terminal.
Furthermore, it is necessary to explanation, step S140 and above-mentioned steps S130 in same position, does not have in the method
Point of priority, can be carried out at the same time.
A kind of method for processing video frequency provided in an embodiment of the present invention, by using the first default thread and the second default thread
I.e. normal video data is sent to the first coding module and the second coding module i.e. two difference by two different thread parallels
Coding module normal video data is handled, so as to obtain treating video data packet and video recording to be stored that network sends
File.It by parallel coding module for different demands, while handles video data and is independent of each other, can be very good to solve
Video compress is to the demand in terms of network transmission and local video recording two, to reach preferable effect.Further, since using parallel
Coding module handles normal video data, it is ensured that if one of module due to inside and outside after causing hang-up,
Do not interfere with the processing of another module, i.e., it is safe.
Embodiment two
Fig. 2 is a kind of flow chart of method for processing video frequency provided by Embodiment 2 of the present invention, and the present embodiment is in above-mentioned implementation
On the basis of example, method for processing video frequency is further optimized.Specifically, this method includes：
S210 pre-processes the HD video data collected in real time, obtains normal video data.
Normal video data is stored in common buffer by S220.
There is collapse phenomenon in entire cataloged procedure in order to prevent, normal video data can be stored in common buffer
In.Such as when the video data volume is larger, deletion that can be appropriate is by some data in common buffer, to ensure whole process
Normal operation.Pretreated normal video data is stored in common buffer by the present embodiment.
S230, the collecting thread corresponding to common buffer preset thread to first by the first callback interface through first
Coding module sends normal video data.
Wherein, callback interface is virtual interface, generally refers to call another sentence after some Statement Completion is performed,
Commonly used in multi-thread programming；The first callback interface herein, for obtaining by socket handle and realization being called to pass through
The method that first default thread sends normal video data to the first coding module.First callback interface and the first default thread pair
It should.
S240, the collecting thread corresponding to common buffer preset thread to second by the second callback interface through second
Coding module sends normal video data.
Second callback interface is similar with the first callback interface, corresponding with the second default thread, for passing through socket handle
To obtain and call the method realized and send normal video data to the second coding module by the second default thread.
Furthermore, it is necessary to explanation, step S240 and above-mentioned steps S230 in same position, does not have in the method
Point of priority, can be carried out at the same time.
S250 carries out the normal video data received by the first coding module the first coding and obtains treating that network is sent
Video data packet.
S260 carries out the second coding to the normal video data received by the second coding module and obtains record to be stored
As file.
A kind of method for processing video frequency provided in an embodiment of the present invention, by using the first default thread and the second default thread
I.e. normal video data is sent to the first coding module and the second coding module i.e. two difference by two different thread parallels
Coding module normal video data is handled, so as to obtain treating video data packet and video recording to be stored that network sends
File.It by parallel coding module for different demands, while handles video data and is independent of each other, can be very good to solve
Video compress is to the demand in terms of network transmission and local video recording two, to reach preferable effect.Further, since using parallel
Coding module handles normal video data, it is ensured that if one of module due to inside and outside after causing hang-up,
Do not interfere with the processing of another module, i.e., it is safe.
Embodiment three
Fig. 3 is a kind of structure diagram for video process apparatus that the embodiment of the present invention three provides, which can perform this hair
The method for processing video frequency that bright any embodiment is provided possesses the corresponding function module of execution method and advantageous effect.Such as Fig. 3 institutes
Show, which can include：
Preprocessing module 310 for being pre-processed to the HD video data collected in real time, obtains normal video number
According to；
Data transmission blocks 320, for passing through the first default thread and the second default thread parallel by normal video data
It is sent to the first coding module and the second coding module；
Data packet acquisition module 330 carries out first for passing through the first coding module to the normal video data received
Coding obtains treating the video data packet that network is sent；
Video file acquisition module 340 carries out for passing through the second coding module to the normal video data that receives
Two codings obtain video file to be stored.
A kind of video process apparatus provided in an embodiment of the present invention, by using the first default thread and the second default thread
I.e. normal video data is sent to the first coding module and the second coding module i.e. two difference by two different thread parallels
Coding module normal video data is handled, so as to obtain treating video data packet and video recording to be stored that network sends
File.It by parallel coding module for different demands, while handles video data and is independent of each other, can be very good to solve
Video compress is to the demand in terms of network transmission and local video recording two, to reach preferable effect.Further, since using parallel
Coding module handles normal video data, it is ensured that if one of module due to inside and outside after causing hang-up,
Do not interfere with the processing of another module, i.e., it is safe.
Optionally, above device can also include：
Memory module, for normal video data to be stored in common buffer.
Illustratively, data transmission blocks 320 are specifically used for：
Collecting thread corresponding to common buffer encodes mould through the first default thread by the first callback interface to first
Block sends normal video data；
Collecting thread corresponding to common buffer encodes mould through the second default thread by the second callback interface to second
Block sends normal video data.
Optionally, above device can also include：
Sending module, for being obtained by the first coding module to the first coding of normal video data progress received
Treat network send video data packet after, by treat network send video data packet be sent to Demonstration Classroom terminal be decoded it is aobvious
Show.
Note that it above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various apparent variations,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above example to the present invention
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
It can include other more equivalent embodiments, and the scope of the present invention is determined by scope of the appended claims.
Claims (8)
1. a kind of method for processing video frequency, which is characterized in that including：
The HD video data collected in real time are pre-processed, obtain normal video data；
By the first default thread and the second default thread parallel by the normal video data be sent to the first coding module and
Second coding module；
The first coding is carried out to the normal video data received by first coding module to obtain treating that network is sent
Video data packet；
Second coding is carried out to the normal video data received by second coding module and obtains record to be stored
As file.
2. according to the method described in claim 1, it is characterized in that, after obtaining normal video data, further include：By the mark
Quasi- video data is stored in common buffer.
It 3. according to the method described in claim 2, it is characterized in that, will by the first default thread and the second default thread parallel
The normal video data, which is sent to the first coding module and the second coding module, to be included：
Collecting thread corresponding to the common buffer is by the first callback interface, through the described first default thread to described the
One coding module sends the normal video data；
Collecting thread corresponding to the common buffer is by the second callback interface, through the described second default thread to described the
Two coding modules send the normal video data.
4. according to the method described in claim 1, it is characterized in that, by first coding module to the mark that receives
Quasi- video data after the first coding obtains treating the video data packet that network is sent, further include：
The video data packet for treating that network is sent is sent to Demonstration Classroom terminal and is decoded display.
5. a kind of video process apparatus, which is characterized in that including：
Preprocessing module for being pre-processed to the HD video data collected in real time, obtains normal video data；
Data transmission blocks send the normal video data for passing through the first default thread and the second default thread parallel
To the first coding module and the second coding module；
Data packet acquisition module carries out first for passing through first coding module to the normal video data received
Coding obtains treating the video data packet that network is sent；
Video file acquisition module carries out for passing through second coding module to the normal video data that receives
Two codings obtain video file to be stored.
6. device according to claim 5, which is characterized in that further include：
Memory module, for the normal video data to be stored in common buffer.
7. device according to claim 6, which is characterized in that the data transmission blocks are specifically used for：
Collecting thread corresponding to the common buffer is by the first callback interface, through the described first default thread to described the
One coding module sends the normal video data；
Collecting thread corresponding to the common buffer is by the second callback interface, through the described second default thread to described the
Two coding modules send the normal video data.
8. device according to claim 5, which is characterized in that further include：
Sending module, for carrying out the first coding to the normal video data received by first coding module
After obtaining treating the video data packet that network is sent, by the video data packet for treating that network is sent be sent to Demonstration Classroom terminal into
Row decoding display.
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| CN113824973A (en) * | 2021-08-04 | 2021-12-21 | 杭州星犀科技有限公司 | Multi-platform direct-push plug flow method, system, electronic device and storage medium |
| CN114598895A (en) * | 2020-12-04 | 2022-06-07 | 腾讯云计算(长沙)有限责任公司 | Audio and video processing method, device and equipment and computer readable storage medium |
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