CN105141914B - Video broadcasting method and system - Google Patents
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- CN105141914B CN105141914B CN201510514738.4A CN201510514738A CN105141914B CN 105141914 B CN105141914 B CN 105141914B CN 201510514738 A CN201510514738 A CN 201510514738A CN 105141914 B CN105141914 B CN 105141914B
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Abstract
The present invention relates to a kind of video broadcasting method and systems, detect the type of camera module, and receive the video data of camera module output.According to the type of camera module, extracts corresponding preset data processing mode and video data is handled to obtain encapsulation of data, encapsulation of data is sent to remote playing end and is played out.Corresponding data processing mode can be used for different types of camera module, processing encapsulation is carried out to video data, realizes the data acquisition of different type camera module, improve convenient data acquisition.
Description
Technical field
The present invention relates to technical field of video processing, more particularly to a kind of video broadcasting method and system.
Background technique
In the Web-based instruction of current era, interdynamic video, voice communication become indispensable teaching communication mode, such as
In education sector, teachers ' teaching scene and over-the-counter student are subjected to long-range line, realize the long-range religion between teacher and student
It learns.
Traditional video broadcasting method carries out two-way video acquisition by classroom and the camera and display screen that are arranged outside the venue
And broadcasting, interactive learning is realized to a certain extent.But transport protocol and interface meeting due to the camera of different manufacturers production
It is different, it needs to carry out data acquisition using specific camera and is just able to achieve video identification and broadcasting, traditional video is broadcast
The method of putting haves the shortcomings that convenient data acquisition is low.
Summary of the invention
Based on this, it is necessary in view of the above-mentioned problems, providing a kind of video broadcasting method that convenient data acquisition is high and being
System.
A kind of video broadcasting method, comprising the following steps:
The type of camera module is detected, and receives the video data of the camera module output；
According to the type of the camera module, extract corresponding preset data processing mode to the video data at
Reason obtains encapsulation of data；
The encapsulation of data is sent to remote playing end to play out.
A kind of audio/video player system, comprising:
Type detection module for detecting the type of camera module, and receives the video data of the camera module output；
Data processing module extracts corresponding preset data processing mode pair for the type according to the camera module
The video data is handled to obtain encapsulation of data；
Data transmission blocks are played out for the encapsulation of data to be sent to remote playing end.
Above-mentioned video broadcasting method and system, detect the type of camera module, and receive the video counts of camera module output
According to.According to the type of camera module, extracts corresponding preset data processing mode and video data is handled to obtain encapsulation number
According to encapsulation of data is sent to remote playing end and is played out.Corresponding data can be used for different types of camera module
Tupe carries out processing encapsulation to video data, realizes the data acquisition of different type camera module, broadcasts with traditional video
The method of putting is compared, and convenient data acquisition is improved.
Detailed description of the invention
Fig. 1 is the flow chart of video broadcasting method in an embodiment；
Fig. 2 is the type in an embodiment according to camera module, extracts corresponding preset data processing mode to video counts
According to being handled to obtain the flow chart of encapsulation of data；
Fig. 3 is the flow chart of video broadcasting method in another embodiment；
Fig. 4 is the structure chart of audio/video player system in an embodiment；
Fig. 5 is the structure chart of data processing module in an embodiment；
Fig. 6 is the structure chart of audio/video player system in another embodiment.
Specific embodiment
A kind of video broadcasting method, as shown in Figure 1, comprising the following steps:
Step S120: detecting the type of camera module, and receives the video data of camera module output.Camera module is specific
It can be camera or video frequency collection card etc., be set to required position and record a video to scene, quantity can be one
It is also possible to multiple.By taking the remote teaching between teacher and student as an example, camera module may be disposed at classroom and student client,
Obtain the video of academics and students both sides.Since camera is from different manufacturers, respective interface and transport protocol are not
It is identical, by detect camera module type and receive camera module output video data, so as to it is subsequent use corresponding manner
Processing is packaged to video data.
In one of the embodiments, after detecting the type of camera module, it can also pass through corresponding communication mode control
Camera module processed carries out the acquisition of video data, then receives the video data of camera module output.Such as wireless camera
Head, then wirelessly control carries out data acquisition；USB (Universal Serial Bus, universal serial bus) is taken the photograph
As head, is then controlled by USB interface and carry out data acquisition.Can when needing to carry out video record, according to the actual situation using pair
It answers communication mode control camera module to be acquired work, improves convenient data acquisition.
Step S130: it according to the type of camera module, extracts corresponding preset data processing mode and video data is carried out
Processing obtains encapsulation of data.Preset data processing method is different and different according to the type of camera module, specifically can needle
Corresponding tupe is stored in advance to different types of camera module.In one of the embodiments, as shown in Fig. 2, step
S130 includes step S132 to step S136.
Step S132: if camera module is video frequency collection card, color is carried out to the video data of video frequency collection card output
Space conversion, and to the data after conversion carry out coding and encapsulation obtain encapsulation of data.
Step S134: if camera module is IP Camera, the video data of IP Camera output is packaged
Obtain encapsulation of data.
Step S136: if camera module be USB camera, to USB camera output video data carry out coding and
Encapsulation obtains encapsulation of data.
Corresponding encapsulation process method is provided for three kinds of different types of camera modules in the present embodiment, can be supported more
The camera of kind mode realizes the data acquisition of different type camera module.It is appreciated that the type of camera module is not limited to
Three of the above, data processing mode can also correspond to difference.
Data are encoded, are specifically used using CPU (Central Processing Unit, central processing unit)
MMX (MultiMedia eXtensions, multimedia extension) technology carries out coded treatment, can save CPU memory, realizes to every
Video pictures carry out the compression of high quality all the way.The mode of data encapsulation can be selected according to the actual situation, in the present embodiment
Data are encapsulated using RTP (Real-time Transport Protocol, real-time transport protocol).
Before being packaged in step S130 to video data in one of the embodiments, can also to video data into
Row image procossing keeps decoded image apparent.Pantography and hardware-accelerated is carried out to video data, keeps image amplification aobvious
It is still smooth after showing, soft.Moving object picture quality had not only been guaranteed using quality precedence technique, but also stationary object image can be reduced
The bandwidth of quality.Video data is carried out to eliminate interlacing scan processing, the moving image acquired by field is made not have sawtooth.Utilize with
Upper video image processing technology handles video data, occurs can ensure that video not when unstable networks in transmission process
It is broken, improve transmission convenience.
Step S140: encapsulation of data is sent to remote playing end and is played out.Encapsulation of data is sent to remote playing
End plays out, and realizes long-distance video viewing.Equally by taking the remote teaching between teacher and student as an example, remote playing end is same
It may also be arranged on classroom and student client, played using the remote playing end of student client and acquired by the camera module in classroom
Video data, using classroom remote playing end play by student client camera module acquire video data, realize
Bidirectional video communications.
The mode for sending encapsulation of data can adjust according to the actual situation, pass through UDP (User Datagram in the present embodiment
Protocol, User Datagram Protocol) encapsulation of data is sent to media server and stored by agreement, and media server is to envelope
After dress data are decoded, video data is sent to corresponding remote playing end according to source video sequence, such as by the religion of teacher
It learns video and is sent to corresponding student, student's video is back to corresponding teacher etc..It is appreciated that in other embodiments may be used
To be that encapsulation of data is directly sent to remote playing end, played after being decoded by remote playing end to encapsulation of data.
When transmitting encapsulation of data in step S140 in one of the embodiments, can also network be carried out to encapsulation of data and repaired
Packet and the processing of network stabilization.Packet technology and network stabilization technology are repaired with network, (is less than to ensure that the delay of video is short
0.3 second), fluency and continuity.
Further, video broadcasting method, which may also include, obtains audio data and is sent to what remote playing end played out
Step.Remote playing end is sent to after can carrying out audio data collecting by recording devices such as microphones.Similarly, microphone
It may be provided at classroom and student client, the audio data for obtaining academics and students carries out transmitted in both directions, with corresponding video counts
According to being played simultaneously, the communication of audio-video two-way teaching is realized.Audio collection using AEC (Automatic Exposure Control,
Auto-exposure control) technology, support echo cancellation；Using NS technology noise suppression, automatic growth control etc..Support G711,
G.721, G.729, GSM, G723.1, MpegLayer-3 audio compression, support full-duplex audio, all meeting-place audios are mixed simultaneously
Sound output.
In one of the embodiments, as shown in figure 3, video broadcasting method may also include step before step S120
S110。
Step S110: the communication channel between camera module and remote playing end is established.Specifically can according to camera module with
Communication channel is established in IP (Internet Protocol, the network protocol) address at remote playing end.Can be camera module with
Remote playing directly establishes communication channel between end, is also possible to establish communication channel by intermediary of media server.Foundation is taken the photograph
As the communication channel between mould group and remote playing end, by video, voice-grade channel by video, audio data broadcast distribution to pair
Faculty and Students are answered, realize one-to-many or multi-to-multi teaching communication pattern between teacher and student.
In one of the embodiments, with continued reference to Fig. 3, after step S140, video broadcasting method further includes step
S150。
Step S150: switching command Switch Video play mode based on the received.User can be inputted by remote playing end
Switching command, for carrying out video play mode switching.The concrete type of video play mode can be arranged according to actual needs, this
Video play mode includes split screen display available mode, blank mode, Screen sharing mode and broadcast mode etc. in embodiment.Split screen is aobvious
Show that mode refers to the multiple video pictures of split screen display available, blank mode, which refers to, sets pure white background color for screen to carry out written record etc.
Operation, Screen sharing mode, which refers to, shows same video picture by multiple display screens, and broadcast mode, which is used as, plays received audio
Data.User can input corresponding switching command according to actual needs and carry out the operation of mode adjustment raising video broadcasting method just
Benefit.
Further, after step S140, video broadcasting method may also include step S160.
Step S160: regulating command adjusts video playing parameter based on the received.Step S160 can before step S150,
It can also be after the step s 150.User equally can input regulating command by remote playing end, and it is specific to adjust video playing parameter
Can the video parameters such as resolution ratio, frame number, contrast, brightness to video carry out online adjustment immediately, such as can support from
The various video resolution ratio of 160x120 to 720x576 selects.User can input corresponding regulating command according to actual needs and carry out
Video playing parameter regulation further improves the operation ease of high video broadcasting method.
The present invention also provides a kind of audio/video player systems, as shown in figure 4, including type detection module 120, data processing
Module 130 and data transmission blocks 140.
Type detection module 120 is used to detect the type of camera module, and receives the video data of camera module output.It takes the photograph
As mould group specifically can be camera or video frequency collection card etc., it is set to required position and records a video to scene, quantity
It is either one or more.By taking the remote teaching between teacher and student as an example, camera module may be disposed at classroom and
Student client obtains the video of academics and students both sides.Since camera is from different manufacturers, respective interface and biography
Defeated agreement is not identical, by detect camera module type and receive camera module output video data, adopted so as to subsequent
Processing is packaged to video data with corresponding manner.
In one of the embodiments, after detecting the type of camera module, type detection module 120 can also by pair
The communication mode control camera module answered carries out the acquisition of video data, then receives the video data of camera module output.?
When needing to carry out video record, work is acquired using corresponding communication mode control camera module according to the actual situation, is improved
Convenient data acquisition.
Data processing module 130 is used for the type according to camera module, extracts corresponding preset data processing mode to view
Frequency is according to being handled to obtain encapsulation of data.Preset data processing method it is different according to the type of camera module and not
Together, specifically corresponding tupe can be stored in advance for different types of camera module.In one of the embodiments, as schemed
Shown in 5, data processing module 130 includes first processing units 132, the second processing unit 134 and third processing unit 136.
First processing units 132 are used for when camera module is video frequency collection card, to the video counts of video frequency collection card output
According to carry out color space conversion, and to the data after conversion carry out coding and encapsulation obtain encapsulation of data.
The second processing unit 134 is used for when camera module is IP Camera, to the video counts of IP Camera output
According to being packaged to obtain encapsulation of data.
Third processing unit 136 is used for when camera module is USB camera, to the video data of USB camera output
It carries out coding and encapsulation obtains encapsulation of data.
Corresponding encapsulation process method is provided for three kinds of different types of camera modules in the present embodiment, can be supported more
The camera of kind mode realizes the data acquisition of different type camera module.It is appreciated that the type of camera module is not limited to
Three of the above, data processing mode can also correspond to difference.
Data are encoded, specifically carry out coded treatment using CPU technology, CPU memory can be saved, are realized to each
The compression of road video pictures progress high quality.The mode of data encapsulation can be selected according to the actual situation, right in the present embodiment
Data use RTP encapsulation.
It, can also be to video counts before data processing module 130 is packaged video data in one of the embodiments,
According to image procossing is carried out, keep decoded image apparent.Pantography and hardware-accelerated is carried out to video data, puts image
It is still smooth, soft after big display.Moving object picture quality had not only been guaranteed using quality precedence technique, but also stationary object can be reduced
The bandwidth of picture quality.Video data is carried out to eliminate interlacing scan processing, the moving image acquired by field is made not have sawtooth.Benefit
Video data is handled with the above video image processing technology, occurs can ensure that view when unstable networks in transmission process
Frequency is not crushed, and improves transmission convenience.
Data transmission blocks 140 are played out for encapsulation of data to be sent to remote playing end.Encapsulation of data is sent
It is played out to remote playing end, realizes long-distance video viewing.Equally by taking the remote teaching between teacher and student as an example, remotely
Playing end equally may also be arranged on classroom and student client, play taking the photograph by classroom using the remote playing end of student client
As the video data that mould group acquires, the video acquired by the camera module of student client is played using the remote playing end in classroom
Data realize bidirectional video communications.
The mode for sending encapsulation of data can adjust according to the actual situation, pass through udp protocol in the present embodiment for encapsulation of data
It is sent to media server to be stored, after media server is decoded encapsulation of data, according to source video sequence by video counts
It is sent to corresponding student according to being sent to corresponding remote playing end, such as by the instructional video of teacher, student's video is returned
To corresponding teacher etc..It is appreciated that being also possible to that encapsulation of data is directly sent to remote playing end in other embodiments, lead to
It crosses after remote playing end is decoded encapsulation of data and plays.
When data transmission blocks 140 transmit encapsulation of data in one of the embodiments, can also net be carried out to encapsulation of data
Network repairs packet and the processing of network stabilization.Packet technology and network stabilization technology are repaired with network, to ensure that the delay of video is short (small
In 0.3 second), fluency and continuity.
Further, audio/video player system may also include audio data collecting module, and audio data collecting module is for obtaining
It takes audio data and is sent to remote playing end and play out.After can carrying out audio data collecting by recording devices such as microphones
It is sent to remote playing end.Similarly, microphone may also be arranged on classroom and student client, obtain the audio of academics and students
Data carry out transmitted in both directions, play with corresponding video data synchronization, realize the communication of audio-video two-way teaching.
In one of the embodiments, as shown in figure 5, audio/video player system may also include path setup module 110, channel
Module 110 is established for detecting the type of camera module in type detection module 120, and receives the video counts of camera module output
According to the communication channel before, established between camera module and remote playing end.It specifically can be according to camera module and remote playing end
IP address establish communication channel.It can be and directly establish communication channel between camera module and remote playing end, it can also be with
It is to establish communication channel by intermediary of media server.The communication channel between camera module and remote playing end is established, is passed through
Video, voice-grade channel give video, audio data broadcast distribution to corresponding Faculty and Students, realize one-to-many between teacher and student
Or the teaching communication pattern of multi-to-multi.
In one of the embodiments, with continued reference to Fig. 5, audio/video player system may also include mode switch module 150, mould
Formula switching module 150 is used to be sent to encapsulation of data after remote playing end plays out in data transmission blocks 140, according to
Received switching command Switch Video play mode.User can be by remote playing end inputting switching command, for carrying out video
Play mode switching.The concrete type of video play mode can be arranged according to actual needs, video play mode in the present embodiment
Including split screen display available mode, blank mode, Screen sharing mode and broadcast mode etc..Split screen display available mode refers to that split screen display available is multiple
Video pictures, blank mode, which refers to, sets pure white background color for screen to carry out the operation such as written record, and Screen sharing mode refers to
Same video picture is shown by multiple display screens, and broadcast mode, which is used as, plays received audio data.User can be according to reality
Demand inputs corresponding switching command and carries out the operation ease that mode adjustment improves video broadcasting method.
Further, audio/video player system may also include parameter adjustment module 160, and parameter adjustment module 160 is used in number
Encapsulation of data is sent to after remote playing end plays out according to sending module 140, regulating command adjusts view based on the received
Frequency play parameter.User equally can input regulating command by remote playing end, and adjusting video playing parameter specifically can be to video
The video parameters such as resolution ratio, frame number, contrast, brightness carry out online adjustment immediately, such as can support from 160x120 to
The various video resolution ratio of 720x576 selects.User can input corresponding regulating command according to actual needs and carry out video playing
Parameter regulation further improves the operation ease of high video broadcasting method.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (8)
1. a kind of video broadcasting method, which comprises the following steps:
The type for detecting camera module controls acquisition and the reception that camera module carries out video data by corresponding communication mode
The video data of the camera module output；
Image procossing is carried out to the video data, the video data after obtaining image procossing；Described image processing includes figure
Scaling and hardware-accelerated processing or described image processing include eliminating interlacing scan processing；
According to the type of the camera module, extract corresponding preset data processing mode to the video data after image procossing into
Row processing obtains encapsulation of data；Specifically:
If the camera module is video frequency collection card, color space conversion is carried out to the video data after image procossing, and right
Data after conversion carry out coding and encapsulation obtains the encapsulation of data；
If the camera module is IP Camera, the video data after image procossing is packaged to obtain the encapsulation number
According to；
If the camera module is USB camera, coding carried out to the video data after image procossing and encapsulation obtain it is described
Encapsulation of data；
The encapsulation of data is sent to remote playing end to play out, when transmitting encapsulation of data, net is carried out to encapsulation of data
Network repairs packet and the processing of network stabilization.
2. video broadcasting method according to claim 1, which is characterized in that the type of the detection camera module passes through
Corresponding communication mode control camera module carries out the acquisition of video data and receives the video data of the camera module output
The step of before, further include the steps that the communication channel established between the camera module and the remote playing end.
3. video broadcasting method according to claim 1, which is characterized in that described to be sent to the encapsulation of data remotely
After playing the step of end plays out, further include the steps that switching command Switch Video play mode based on the received.
4. video broadcasting method according to claim 1, which is characterized in that described to be sent to the encapsulation of data remotely
After playing the step of end plays out, further include the steps that regulating command based on the received adjusts video playing parameter.
5. a kind of audio/video player system characterized by comprising
Type detection module controls camera module by corresponding communication mode and is regarded for detecting the type of camera module
The acquisition of frequency evidence and the video data for receiving the camera module output；
Data processing module, for carrying out image procossing to the video data, the video data after obtaining image procossing is described
Image procossing includes pantography and hardware-accelerated processing or described image processing includes eliminating interlacing scan processing；According to institute
The type of camera module is stated, corresponding preset data processing mode is extracted and the video data after image procossing is handled to obtain
Encapsulation of data；
Data transmission blocks are played out for the encapsulation of data to be sent to remote playing end, when transmitting encapsulation of data,
Network is carried out to encapsulation of data and repairs packet and the processing of network stabilization；
Data processing module includes:
First processing units, for being carried out to the video data after image procossing when the camera module is video frequency collection card
Color space conversion, and to the data after conversion carry out coding and encapsulation obtain the encapsulation of data；
The second processing unit, for being carried out to the video data after image procossing when the camera module is IP Camera
Encapsulation obtains the encapsulation of data；
Third processing unit, for being compiled to the video data after image procossing when the camera module is USB camera
Code and encapsulation obtain the encapsulation of data.
6. audio/video player system according to claim 5, which is characterized in that it further include path setup module, the channel
Establish module for type detection module detection camera module type, by corresponding communication mode control camera module into
Before the acquisition of row video data and the video data for receiving camera module output, the camera module and described remote is established
Journey plays the communication channel between end.
7. audio/video player system according to claim 5, which is characterized in that it further include mode switch module, the mode
Switching module is used to be sent to the encapsulation of data after remote playing end plays out in the data transmission blocks, according to
Received switching command Switch Video play mode.
8. audio/video player system according to claim 5, which is characterized in that it further include parameter adjustment module, the parameter
Adjustment module is used to be sent to the encapsulation of data after remote playing end plays out in the data transmission blocks, according to
Received regulating command adjusts video playing parameter.
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| CN101808233A (en) * | 2009-02-18 | 2010-08-18 | 杭州海康威视数字技术股份有限公司 | Universal system for realizing video monitoring of mobile phone and method thereof |
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