CN105141914A - Video playing method and system - Google Patents

Video playing method and system Download PDF

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CN105141914A
CN105141914A CN201510514738.4A CN201510514738A CN105141914A CN 105141914 A CN105141914 A CN 105141914A CN 201510514738 A CN201510514738 A CN 201510514738A CN 105141914 A CN105141914 A CN 105141914A
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data
video
encapsulation
camera module
module
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CN105141914B (en
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徐析
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Hunan Yigu Technology Development Co Ltd
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Hunan Yigu Technology Development Co Ltd
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Abstract

The invention relates to a video playing method and system. The method comprises detecting the type of an image pick-up module and receiving video data output by the image pick-up module, extracting a corresponding preset data processing mode according to the type of the image pick-up module to process the video data, thereby obtaining encapsulated data, and sending the encapsulated data to a remote playing terminal for playing. With respect to the image pick-up modules of different types, corresponding data processing modes can be adopted to process and encapsulate the video data, and therefore, data acquisition of the image pick-up modules of different types is realized and the convenience of data acquisition is improved.

Description

Video broadcasting method and system
Technical field
The present invention relates to technical field of video processing, particularly relate to a kind of video broadcasting method and system.
Background technology
In the Web-based instruction of current era, interdynamic video, voice communication become indispensable teaching communication mode, such as, in education sector, carry out long-range line, realize the remote teaching between teacher and student by on-the-spot for teachers ' teaching with student outside the venue.
Traditional video broadcasting method carries out two-way video collection and broadcasting by classroom and the camera arranged and display screen outside the venue, realizes interactive learning to a certain extent.But the host-host protocol of camera produced due to different manufacturers and interface can be different, and need to adopt specific camera to carry out data acquisition and could realize video identification and broadcasting, traditional video broadcasting method exists the low shortcoming of convenient data acquisition.
Summary of the invention
Based on this, be necessary for the problems referred to above, video broadcasting method and system that a kind of convenient data acquisition is high are provided.
A kind of video broadcasting method, comprises the following steps:
Detect the type of camera module, and receive the video data of described camera module output;
According to the type of described camera module, the corresponding data processing mode preset of extraction carries out process to described video data and obtains encapsulation of data;
Described encapsulation of data is sent to remote playing end play.
A kind of audio/video player system, comprising:
Type detection module, for detecting the type of camera module, and receives the video data of described camera module output;
Data processing module, for the type according to described camera module, the corresponding data processing mode preset of extraction carries out process to described video data and obtains encapsulation of data;
Data transmission blocks, plays for described encapsulation of data is sent to remote playing end.
Above-mentioned video broadcasting method and system, detect the type of camera module, and receive the video data of camera module output.According to the type of camera module, the corresponding data processing mode preset of extraction carries out process to video data and obtains encapsulation of data, encapsulation of data is sent to remote playing end and plays.Corresponding data processing mode can be adopted to carry out process encapsulation to video data for dissimilar camera module, realize the data acquisition of dissimilar camera module, compared with traditional video broadcasting method, improve convenient data acquisition.
Accompanying drawing explanation
Fig. 1 is the flow chart of video broadcasting method in an embodiment;
Fig. 2 is the type according to camera module in an embodiment, extracts the corresponding data processing mode preset and video data is processed to the flow chart obtaining 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.
Embodiment
A kind of video broadcasting method, as shown in Figure 1, comprises the following steps:
Step S120: the type detecting camera module, and the video data receiving camera module output.Camera module can be specifically camera or video frequency collection card etc., is arranged at desired location and records a video to scene, and its quantity can be one also can be multiple.For the remote teaching between teacher and student, camera module can be arranged at classroom and student client, obtains the video of academics and students both sides.Because camera is from different manufacturers, respective interface and host-host protocol are not identical, by detect camera module type and receive camera module export video data so that follow-up employing corresponding manner carries out encapsulation process to video data.
Wherein in an embodiment, after the type of camera module being detected, the communication mode also by correspondence controls the collection that camera module carries out video data, then receives the video data that camera module exports.Such as wireless camera, then wirelessly control to carry out data acquisition; For USB (UniversalSerialBus, USB) camera, then control to carry out data acquisition by USB interface.When needs carry out video record, corresponding communication mode can be adopted to control camera module according to actual conditions and carries out collecting work, improve convenient data acquisition.
Step S130: according to the type of camera module, the corresponding data processing mode preset of extraction carries out process to video data and obtains encapsulation of data.The data processing method preset is different according to the type difference of camera module, specifically can prestore corresponding tupe for dissimilar camera module.Wherein in an embodiment, as shown in Figure 2, step S130 comprises step S132 to step S136.
Step S132: if camera module is video frequency collection card, then carry out color space conversion to the video data that video frequency collection card exports, and to encode and encapsulation obtains encapsulation of data to the data after conversion.
Step S134: if camera module is IP Camera, then the video data exported IP Camera carries out encapsulation and obtains encapsulation of data.
Step S136: if camera module is USB camera, then to USB camera export coding video data and encapsulation obtain encapsulation of data.
There is provided corresponding encapsulation process method for three kinds of dissimilar camera modules in the present embodiment, the camera of various modes can be supported, realize the data acquisition of dissimilar camera module.Be appreciated that the type of camera module is not limited to above three kinds, data processing mode also can be corresponding different.
Data are encoded, specifically can utilize CPU (CentralProcessingUnit, central processing unit) adopt MMX (MultiMediaeXtensions, multimedia extension) technology carries out coded treatment, CPU internal memory can be saved, realize carrying out high-quality compression to each road video pictures.The mode of data encapsulation can be selected according to actual conditions, adopts RTP (Real-timeTransportProtocol, RTP) encapsulation in the present embodiment to data.
Wherein in an embodiment, before video data being encapsulated in step S130, also can carry out image procossing to video data, make decoded image more clear.Pantography and hardware-accelerated is carried out to video data, still level and smooth, soft after Nonlinear magnify is shown.Adopt quality precedence technique both to ensure moving object picture quality, the bandwidth of stationary object picture quality can be reduced again.Elimination interlacing scan process is carried out to video data, makes the moving image gathered by field there is no sawtooth.Utilize above video image processing technology to process video data, when there is unstable networks in transmitting procedure, can guarantee that video is not broken, improve transmission convenience.
Step S140: encapsulation of data is sent to remote playing end and plays.Encapsulation of data is sent to remote playing end to play, realizes long-distance video viewing.Same for the remote teaching between teacher and student, remote playing end equally also can be arranged on classroom and student client, the remote playing end of student client is utilized to play the video data gathered by the camera module in classroom, utilize the remote playing end in classroom to play the video data gathered by the camera module of student client, realize bidirectional video communications.
The mode sending encapsulation of data can adjust according to actual conditions, by UDP (UserDatagramProtocol in the present embodiment, User Datagram Protoco (UDP)) encapsulation of data is sent to media server and stores by agreement, after media server is decoded to encapsulation of data, according to source video sequence, video data is sent to corresponding remote playing end, such as the instructional video of teacher is sent to corresponding student, student's video is back to corresponding teacher etc.Be appreciated that it also can is directly encapsulation of data is sent to remote playing end in other embodiments, play after encapsulation of data being decoded by remote playing end.
Wherein in an embodiment, when transmitting encapsulation of data in step S140, also can carry out network to encapsulation of data and repair bag and the process of network stabilization.Use network to repair packet technology and network stabilization technology, thus ensure that the time delay of video short (being less than 0.3 second), fluency and continuity.
Further, video broadcasting method also can comprise and obtains voice data and be sent to the step that remote playing end carries out playing.Remote playing end is sent to after carrying out audio data collecting by recording devices such as microphones.Similarly, microphone also can be arranged on classroom and student client, and the voice data obtaining academics and students carries out transmitted in both directions, plays, realize the communication of audio frequency and video two-way teaching with corresponding video data synchronization.Audio collection adopts AEC (AutomaticExposureControl, auto-exposure control) technology, supports echo cancellation; Adopt 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 audio frequency simultaneously audio mixing exports.
Wherein in an embodiment, as shown in Figure 3, before step S120, video broadcasting method also can comprise step S110.
Step S110: set up the communication port between camera module and remote playing end.Specifically can set up communication port according to IP (InternetProtocol, the procotol) address of camera module and remote playing end.Can be directly set up communication port between camera module and remote playing end, also can be that intermediary sets up communication port with media server.Set up the communication port between camera module and remote playing end, by video, voice-grade channel, video, broadcast audio data are distributed to corresponding Faculty and Students, realize the teaching communication pattern of one-to-many or multi-to-multi between teacher and student.
Wherein in an embodiment, continue with reference to Fig. 3, after step S140, video broadcasting method also comprises step S150.
Step S150: according to the switching command Switch Video play mode received.User by remote playing end inputting switching command, for carrying out video play mode switching.The particular type of video play mode can be arranged according to the actual requirements, and in the present embodiment, video play mode comprises split screen display mode, blank pattern, Screen sharing pattern and broadcast mode etc.Split screen display mode refers to that split screen shows multiple video pictures, blank pattern refers to screen is set to pure white background color to carry out the operations such as written record, Screen sharing pattern refers to that broadcast mode is used as to play the voice data received by multiple display screen display same video picture.User can input corresponding switching command according to the actual requirements and carry out the operation ease that mode adjustment improves video broadcasting method.
Further, after step S140, video broadcasting method also can comprise step S160.
Step S160: regulate video playback parameter according to the regulating command received.Step S160 can before step S150, also can be after the step s 150.User is equally by remote playing end input regulating command, regulate video playback parameter specifically can carry out online instant adjustment to video parameters such as the resolution of video, frame number, contrast, brightness, such as, can support that the various video resolution from 160x120 to 720x576 is selected.User can input corresponding regulating command according to the actual requirements and carry out the adjustment of video playback parameter, further increases the operation ease of high video broadcasting method.
Present invention also offers a kind of audio/video player system, as shown in Figure 4, comprise type detection module 120, data processing module 130 and data transmission blocks 140.
Type detection module 120 for detecting the type of camera module, and receives the video data of camera module output.Camera module can be specifically camera or video frequency collection card etc., is arranged at desired location and records a video to scene, and its quantity can be one also can be multiple.For the remote teaching between teacher and student, camera module can be arranged at classroom and student client, obtains the video of academics and students both sides.Because camera is from different manufacturers, respective interface and host-host protocol are not identical, by detect camera module type and receive camera module export video data so that follow-up employing corresponding manner carries out encapsulation process to video data.
Wherein in an embodiment, after the type of camera module being detected, type detection module 120 also controls by the communication mode of correspondence the collection that camera module carries out video data, then receives the video data that camera module exports.When needs carry out video record, adopt corresponding communication mode to control camera module according to actual conditions and carry out collecting work, improve convenient data acquisition.
Data processing module 130 is for the type according to camera module, and the corresponding data processing mode preset of extraction carries out process to video data and obtains encapsulation of data.The data processing method preset is different according to the type difference of camera module, specifically can prestore corresponding tupe for dissimilar camera module.Wherein in an embodiment, as shown in Figure 5, data processing module 130 comprises the first processing unit 132, second processing unit 134 and the 3rd processing unit 136.
First processing unit 132, for when camera module is video frequency collection card, carries out color space conversion to the video data that video frequency collection card exports, and to encode and encapsulation obtains encapsulation of data to the data after conversion.
Second processing unit 134, for when camera module is IP Camera, carries out encapsulation to the video data of IP Camera output and obtains encapsulation of data.
3rd processing unit 136 is for when camera module is USB camera, and the coding video data export USB camera and encapsulation obtain encapsulation of data.
There is provided corresponding encapsulation process method for three kinds of dissimilar camera modules in the present embodiment, the camera of various modes can be supported, realize the data acquisition of dissimilar camera module.Be appreciated that the type of camera module is not limited to above three kinds, data processing mode also can be corresponding different.
Data are encoded, CPU technology specifically can be utilized to carry out coded treatment, CPU internal memory can be saved, realize carrying out high-quality compression to each road video pictures.The mode of data encapsulation can be selected according to actual conditions, adopts RTP encapsulation in the present embodiment to data.
Wherein in an embodiment, before data processing module 130 pairs of video datas encapsulate, also can carry out image procossing to video data, make decoded image more clear.Pantography and hardware-accelerated is carried out to video data, still level and smooth, soft after Nonlinear magnify is shown.Adopt quality precedence technique both to ensure moving object picture quality, the bandwidth of stationary object picture quality can be reduced again.Elimination interlacing scan process is carried out to video data, makes the moving image gathered by field there is no sawtooth.Utilize above video image processing technology to process video data, when there is unstable networks in transmitting procedure, can guarantee that video is not broken, improve transmission convenience.
Data transmission blocks 140 is play for encapsulation of data being sent to remote playing end.Encapsulation of data is sent to remote playing end to play, realizes long-distance video viewing.Same for the remote teaching between teacher and student, remote playing end equally also can be arranged on classroom and student client, the remote playing end of student client is utilized to play the video data gathered by the camera module in classroom, utilize the remote playing end in classroom to play the video data gathered by the camera module of student client, realize bidirectional video communications.
The mode sending encapsulation of data can adjust according to actual conditions, by udp protocol, encapsulation of data is sent to media server in the present embodiment to store, after media server is decoded to encapsulation of data, according to source video sequence, video data is sent to corresponding remote playing end, such as the instructional video of teacher is sent to corresponding student, student's video is back to corresponding teacher etc.Be appreciated that it also can is directly encapsulation of data is sent to remote playing end in other embodiments, play after encapsulation of data being decoded by remote playing end.
Wherein in an embodiment, when data transmission blocks 140 transmits encapsulation of data, also can carry out network to encapsulation of data and repair bag and the process of network stabilization.Use network to repair packet technology and network stabilization technology, thus ensure that the time delay of video short (being less than 0.3 second), fluency and continuity.
Further, audio/video player system also can comprise audio data collecting module, and audio data collecting module is play for obtaining voice data and being sent to remote playing end.Remote playing end is sent to after carrying out audio data collecting by recording devices such as microphones.Similarly, microphone also can be arranged on classroom and student client, and the voice data obtaining academics and students carries out transmitted in both directions, plays, realize the communication of audio frequency and video two-way teaching with corresponding video data synchronization.
Wherein in an embodiment, as shown in Figure 5, audio/video player system also can comprise Path Setup module 110, Path Setup module 110 is for detecting the type of camera module in type detection module 120, and before receiving the video data of camera module output, set up the communication port between camera module and remote playing end.Specifically can set up communication port according to the IP address of camera module and remote playing end.Can be directly set up communication port between camera module and remote playing end, also can be that intermediary sets up communication port with media server.Set up the communication port between camera module and remote playing end, by video, voice-grade channel, video, broadcast audio data are distributed to corresponding Faculty and Students, realize the teaching communication pattern of one-to-many or multi-to-multi between teacher and student.
Wherein in an embodiment, continue with reference to Fig. 5, audio/video player system also can comprise mode switch module 150, mode switch module 150 in data transmission blocks 140 encapsulation of data being sent to after remote playing end plays, according to the switching command Switch Video play mode received.User by remote playing end inputting switching command, for carrying out video play mode switching.The particular type of video play mode can be arranged according to the actual requirements, and in the present embodiment, video play mode comprises split screen display mode, blank pattern, Screen sharing pattern and broadcast mode etc.Split screen display mode refers to that split screen shows multiple video pictures, blank pattern refers to screen is set to pure white background color to carry out the operations such as written record, Screen sharing pattern refers to that broadcast mode is used as to play the voice data received by multiple display screen display same video picture.User can input corresponding switching command according to the actual requirements and carry out the operation ease that mode adjustment improves video broadcasting method.
Further, audio/video player system also can comprise parameter adjustment module 160, and parameter adjustment module 160, for be sent to by encapsulation of data after remote playing end plays in data transmission blocks 140, regulates video playback parameter according to the regulating command received.User is equally by remote playing end input regulating command, regulate video playback parameter specifically can carry out online instant adjustment to video parameters such as the resolution of video, frame number, contrast, brightness, such as, can support that the various video resolution from 160x120 to 720x576 is selected.User can input corresponding regulating command according to the actual requirements and carry out the adjustment of video playback parameter, further increases the operation ease of high video broadcasting method.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this specification is recorded.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.

Claims (10)

1. a video broadcasting method, is characterized in that, comprises the following steps:
Detect the type of camera module, and receive the video data of described camera module output;
According to the type of described camera module, the corresponding data processing mode preset of extraction carries out process to described video data and obtains encapsulation of data;
Described encapsulation of data is sent to remote playing end play.
2. video broadcasting method according to claim 1, is characterized in that, the described type according to described camera module, extracts the corresponding data processing mode preset and described video data is processed to the step obtaining encapsulation of data, comprise the following steps:
If described camera module is video frequency collection card, then color space conversion is carried out to the video data that described video frequency collection card exports, and the data after conversion are encoded and encapsulation obtains described encapsulation of data;
If described camera module is IP Camera, then the video data exported described IP Camera carries out encapsulation and obtains described encapsulation of data;
If described camera module is USB camera, then the coding video data exported described USB camera and encapsulation obtain described encapsulation of data.
3. video broadcasting method according to claim 1, it is characterized in that, the type of described detection camera module, and before receiving the step of the video data that described camera module exports, also comprise the step of the communication port set up between described camera module and described remote playing end.
4. video broadcasting method according to claim 1, is characterized in that, is describedly sent to by described encapsulation of data after remote playing end carries out the step play, and also comprises the step according to the switching command Switch Video play mode received.
5. video broadcasting method according to claim 1, is characterized in that, is describedly sent to by described encapsulation of data after remote playing end carries out the step play, and also comprises the step regulating video playback parameter according to the regulating command received.
6. an audio/video player system, is characterized in that, comprising:
Type detection module, for detecting the type of camera module, and receives the video data of described camera module output;
Data processing module, for the type according to described camera module, the corresponding data processing mode preset of extraction carries out process to described video data and obtains encapsulation of data;
Data transmission blocks, plays for described encapsulation of data is sent to remote playing end.
7. audio/video player system according to claim 6, is characterized in that, described data processing module comprises:
First processing unit, for when described camera module is video frequency collection card, carries out color space conversion to the video data that described video frequency collection card exports, and to encode and encapsulation obtains described encapsulation of data to the data after conversion;
Second processing unit, for when described camera module is IP Camera, the video data exported described IP Camera carries out encapsulation and obtains described encapsulation of data;
3rd processing unit, for when described camera module is USB camera, the coding video data export described USB camera and encapsulation obtain described encapsulation of data.
8. audio/video player system according to claim 6, it is characterized in that, also comprise Path Setup module, described Path Setup module is used for the type detecting camera module in type detection module, and before receiving the video data of described camera module output, set up the communication port between described camera module and described remote playing end.
9. audio/video player system according to claim 6, it is characterized in that, also comprise mode switch module, described mode switch module is used for being sent to by described encapsulation of data after remote playing end plays, according to the switching command Switch Video play mode received in described data transmission blocks.
10. audio/video player system according to claim 6, it is characterized in that, also comprise parameter adjustment module, described parameter adjustment module is used for being sent to by described encapsulation of data after remote playing end plays in described data transmission blocks, regulates video playback parameter according to the regulating command received.
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