CN106303329A - Record screen live broadcasting method and device, mobile device and live broadcast system - Google Patents
Record screen live broadcasting method and device, mobile device and live broadcast system Download PDFInfo
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- CN106303329A CN106303329A CN201610656422.3A CN201610656422A CN106303329A CN 106303329 A CN106303329 A CN 106303329A CN 201610656422 A CN201610656422 A CN 201610656422A CN 106303329 A CN106303329 A CN 106303329A
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- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000004891 communication Methods 0.000 claims description 10
- 230000033001 locomotion Effects 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 7
- 238000004590 computer program Methods 0.000 description 6
- 210000004247 hand Anatomy 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000003993 interaction Effects 0.000 description 4
- 241001269238 Data Species 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
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- 238000004806 packaging method and process Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 208000015041 syndromic microphthalmia 10 Diseases 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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Classifications
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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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4126—The peripheral being portable, e.g. PDAs or mobile phones
-
- 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
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
-
- 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 or rendering scenes according to encoded video stream scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
- H04N21/440236—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by media transcoding, e.g. video is transformed into a slideshow of still pictures, audio is converted into text
-
- 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
- H04N21/47—End-user applications
- H04N21/478—Supplemental services, e.g. displaying phone caller identification, shopping application
- H04N21/4781—Games
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses and a kind of carry out record live method and apparatus, mobile device and the live broadcast system of screen based on mobile device.Application programming interfaces Opengl ES is utilized to gather the first on-screen data corresponding to the screen-picture of described mobile device with the first default frame frequency, described first on-screen data collected is encoded, with the first video data after being encoded, and the first video data is packaged into a RTMP packet.Thus, by gathering screen-picture with default frame frequency, the video data of stable frame frequency can be obtained, to this coding video data, it is possible to obtain the video data of stable code check, such that it is able to promote the fluency of viewing end this video data of player plays.
Description
Technical field
The present invention relates to live field, particularly relate to a kind of carry out record based on mobile device and shield live method and dress
Put, mobile device and live broadcast system.
Background technology
Along with the hardware of the mobile device such as smart mobile phone, IPAD and the development of communication network and domestic hands are played the meaning of family
Knowledge steps up, and the trend of hands trip severe is the most obvious.While more and more MOBA, FPS type handss are swum out of now, also urge
Bear a new industry " hands trip is live ".The data structures that carries weight is predicted, the live market of Chinese game was advised after 3 years
Mould will reach more than 5,000,000,000 yuan, and wherein hands trip is live accounts for more than three one-tenth therein.
The live game picture mainly recording mobile device by installing live software on the mobile apparatus of hands trip at present
Face and sound, carry out audio/video coding, then by RTMP agreement upload to CDN (Content Delivery Network, interior
Content distributing network) server.Wherein, Video coding mode has hard coded and soft coding two kinds, owing to the hardware of mobile device is joined
It is not the highest for putting, and needs the mode of the hard coded using resource consumption relatively low to encode.But due to different type of machines, different behaviour
The frame frequency (Frame rate) making the mobile device of system is different, and the frame frequency that same mobile device is under different sights is the most not
The most identical, such as, when mobile phone runs different game, or under the different scenes being in same game, the screen of mobile phone
The frame frequency of shown game picture is also not quite similar.Thus, existing live software is used to record the screen of the mobile device obtained
The frame frequency of curtain video data corresponding to picture is unstable so that the code check of the video data after coding changes greatly, and easily makes
Become viewing end player card to pause, affect viewing quality.
Video data corresponding to the screen-picture of mobile device can be carried out stable coding to obtain accordingly, it would be desirable to a kind of
Take record screen live broadcasting method and device, mobile device and the live broadcast system of the video data of stable code check.
Summary of the invention
It is an advantage of the invention to provide and a kind of carry out the record live method and apparatus of screen, shifting based on mobile device
Dynamic equipment and live broadcast system, it is capable of the video data corresponding to the screen-picture of mobile device is carried out stable coding,
It is thus possible to obtain the video data stablizing code check, and then the smoothness of viewing end this video data of player plays can be promoted
Property.
The method that record screen is live is carried out based on mobile device according to an aspect of the invention, it is provided a kind of, including: make
With application programming interfaces Opengl ES with the first screen corresponding to the screen-picture of the first default frame frequency collection mobile device
Data；The first on-screen data collected is encoded, with the first video data after being encoded；By the first video counts
According to being packaged into a RTMP packet.
Thus, utilize application programming interfaces Opengl ES to gather screen-picture with default frame frequency, stabilizer frame can be obtained
The video data of frequency, to this coding video data, it is possible to obtain the video data of stable code check.
Alternatively, the step using application programming interfaces Opengl ES to gather on-screen data may include that establishment virtual screen
Curtain；Application programming interfaces Opengl ES is used to gather the first on-screen data with the first default frame frequency from virtual screen.
Alternatively, the method can also include: user select to use mobile device carry out live in the case of, can be by
Oneth RTMP packet is sent to content delivery network service device；Select to use terminal computer to carry out live situation user
Under, a RTMP packet can be sent to terminal computer.
Thus, according to practical situation, user can select to use mobile device to carry out live, it is also possible to by mobile device
On-screen data is pushed to terminal computer, uses terminal computer to carry out live.
Alternatively, user select use terminal computer carry out live in the case of, mobile device can pass through local
In net, RTMP packet is sent to be in the terminal computer in same LAN with mobile device by plug-flow.
So, uplink bandwidth of network and stability are relatively good, can improve between mobile device and terminal computer
Data transmission efficiency.
Alternatively, user select use mobile device carry out live in the case of, the method can also include: by move
The mike of dynamic equipment gathers the first voice data；First voice data is encoded；By the first voice data after coding
It is encapsulated in RTMP packet.
Thus, when user selects to use mobile device to carry out live, it is also possible to by the mike collection of mobile device
The voice data that mobile device and/or user send, carries out audio coding by this voice data, and by the voice data after coding
Together it is encapsulated in RTMP packet together with video data.As such, it is possible to promote the viewing experience of viewing end, and can be favourable
In realizing live end and the interaction of viewing end.
Alternatively, user select use terminal computer carry out live in the case of, the method can also include: by end
End computer receives the RTMP packet that mobile device sends；Oneth RTMP packet is unsealed by terminal computer
Dress, to obtain the first video data；Terminal computer, based on the first video data, presents movement on the screen of terminal computer
The screen-picture of equipment；Terminal computer is with second corresponding to the screen-picture of the second default frame frequency acquisition terminal computer
On-screen data；Terminal computer carries out Video coding to the second on-screen data collected, to obtain the second video data；Eventually
Second video data is packaged into the 2nd RTMP packet by end computer；In 2nd RTMP packet is sent to by terminal computer
Content distributing network server.
Owing to the display effect of the display of terminal computer becomes apparent from, and the disposal ability of terminal computer is more
By force, recompiling through terminal computer, it is possible to obtain the higher video data of code check so that viewing end it can be seen that
The more preferable live picture of image quality.
Alternatively, terminal computer can gather second audio data by the mike of terminal computer；Terminal calculates
Machine carries out audio coding to second audio data；Second audio data after coding is encapsulated into the 2nd RTMP number by terminal computer
According in bag.
Thus, when user selects to use terminal computer to carry out live, it is also possible to by the mike of terminal computer
The voice data that acquisition terminal computer and/or user send.As such, it is possible to promote the viewing experience of viewing end, and permissible
It is advantageously implemented live end and the interaction of viewing end.
Alternatively, the method can also include: the shooting of the photographic head of terminal computer collecting computer terminal obtain the
Three video datas；The 3rd video data collected and the second on-screen data are synthesized the 4th video counts by terminal computer
According to；Terminal computer is to the 4th coding video data, to obtain the second video data.
Thus, when user selects to use terminal computer to carry out live, it is also possible to open the photographic head of terminal computer,
Gather the head image information of user or live background information, and the picture of camera collection can be carried out U.S. face process.
Alternatively, the 4th video data can be yuv format data, and terminal computer is to the 4th coding video data
Step may include that terminal computer uses the storehouse x264 that increases income the 4th video data to be carried out soft coding, to be met
Second video data of H264 standard.
According to another aspect of the present invention, additionally provide and a kind of carry out the record live device of screen, bag based on mobile device
Include: the first acquisition module, for using application programming interfaces Opengl ES to gather the screen of mobile device with the first default frame frequency
The curtain the first on-screen data corresponding to picture；First coding module, for the first on-screen data collected is encoded,
With the first video data after being encoded；Package module, for being packaged into a RTMP packet by the first video data.
Preferably, the first acquisition module can create virtual screen, and uses application programming interfaces Opengl ES to preset
The first frame frequency gather the first on-screen data from virtual screen.
Preferably, this device can also include sending module, wherein, selects to use mobile device to carry out live user
In the case of, a RTMP packet can be sent to content delivery network service device by sending module, selects to use eventually user
End computer carry out live in the case of, a RTMP packet can be sent to terminal computer by sending module.
Preferably, user select use terminal computer carry out live in the case of, sending module can pass through local
In net, RTMP packet is sent to be in the terminal computer in same LAN with mobile device by plug-flow.
Preferably, user select use mobile device carry out live in the case of, this device can also include: second adopts
Collection module, for gathering the first voice data by the mike of mobile device；Second coding module, for the first audio frequency number
According to encoding, the first voice data after coding is encapsulated in a RTMP packet by package module.
According to another aspect of the present invention, additionally provide a kind of for carrying out the mobile device that record screen is live, including: screen
Curtain；Memorizer；Communication module；And processor, processor uses application programming interfaces Opengl ES with the first default frame frequency
Gather the first on-screen data corresponding to screen-picture that screen is presented, the first on-screen data is encoded, to be compiled
The first video data after Ma, the first video data is packaged into a RTMP packet by processor, and by RTMP data
Bag storage is in memorizer, wherein, user select to use mobile device carry out live in the case of, processor is by communication mould
Oneth RTMP packet is sent to content delivery network service device by block, selects to use terminal computer to carry out live user
In the case of, a RTMP packet is sent to terminal computer by communication module by processor.
According to another aspect of the present invention, additionally provide a kind of record screen live broadcast system, including: the movement addressed above sets
Standby；And terminal computer, wherein, mobile device and terminal computer are in same LAN, and terminal computer receives and moves
The RTMP packet that dynamic equipment sends by the way of plug-flow in LAN, and a RTMP packet is unsealed
Dress, to obtain the first video data, terminal computer, based on the first video data, presents movement on the screen of terminal computer
The screen-picture of equipment, and with the second screen number corresponding to the screen-picture of the second default frame frequency acquisition terminal computer
According to, terminal computer carries out Video coding to the second on-screen data collected, and to obtain the second video data, terminal calculates
Second video data is packaged into the 2nd RTMP packet by machine, and the 2nd RTMP packet is sent to content delivery network service
Device.
The present invention carries out the live method of record screen, mobile device and record screen live broadcast system based on mobile device, and utilizing should
Gather the screen-picture of mobile device with routine interface Opengl ES with default frame frequency, the video of stable frame frequency can be obtained
Data, to this coding video data, it is possible to obtain the video data of stable code check.Thus can promote viewing end to play
The fluency of this video data play by device.
Accompanying drawing explanation
By combining accompanying drawing, disclosure illustrative embodiments is described in more detail, the disclosure above-mentioned and its
Its purpose, feature and advantage will be apparent from, wherein, in disclosure illustrative embodiments, and identical reference number
Typically represent same parts.
Fig. 1 shows the schematic stream carrying out the live method of record screen according to an embodiment of the invention based on mobile device
Cheng Tu.
Fig. 2 carries out the schematic flow of the live method of record screen according to another embodiment of the present invention based on mobile device
Figure.
Fig. 3 shows the showing of structure carrying out the record live device of screen according to an embodiment of the invention based on mobile device
Meaning property block diagram.
Fig. 4 shows the schematic block diagram of live broadcast system according to an embodiment of the invention.
Detailed description of the invention
It is more fully described the preferred implementation of the disclosure below with reference to accompanying drawings.Although accompanying drawing shows the disclosure
Preferred implementation, however, it is to be appreciated that may be realized in various forms the disclosure and the embodiment party that should not illustrated here
Formula is limited.On the contrary, it is provided that these embodiments are to make the disclosure more thorough and complete, and can be by the disclosure
Scope intactly conveys to those skilled in the art.
Before the present invention is described, the relational language that the most just the present invention relates to does with brief description.
AAC (Advanced Audio Coding), Advanced Audio Coding, a kind of file pressure aiming at voice data design
Contracting form.
X264 is a H.264/MPEG-4AVC Video coding function library increased income.
H264 is ITU (International Telecommunication Unite International Telecommunications Union) and MPEG
(Motion Picture Experts Group Motion Picture Experts Group) combines the video encoding standard of formulation.
RTMP is the acronym of Real Time Messaging Protocol (real-time messages host-host protocol).
CDN (Content Delivery Network), i.e. content distributing network.
PCM (Pulse Code Modulation----pulse-code modulation recording).
FFmpeg be a set of can be used to record, converted digital audio, video, and the calculating of increasing income of stream can be translated into
Machine program.Use LGPL or GPL licence, it provide recording, change and fluidize the total solution of audio frequency and video.
OpenGL ES (OpenGL for Embedded Systems) is that (application program connects OpenGL 3-D graphic API
Mouthful) subset, design for embedded devices such as mobile phone, PDA and game hosts.
As it was previously stated, in order to realize the video data corresponding to the screen-picture of mobile device is stably compiled
Code, the present invention utilizes application programming interfaces Opengl ES to gather the screen-picture of mobile device with default frame frequency, steady to obtain
The video data of framing frequency, by this coding video data, encapsulation, it is possible to obtain the code check of end available for viewing viewing
Stable video data.
Fig. 1 shows the schematic stream carrying out the live method of record screen according to an embodiment of the invention based on mobile device
Cheng Tu.Wherein, the mobile device that the present invention addresses can be the mobile terminal that mobile phone, IPAD etc. are easy to that user carries.
See Fig. 1, in step S110, use application programming interfaces Opengl ES to move with the first default frame frequency collection
The first on-screen data corresponding to the screen-picture of equipment.Wherein, the first frame frequency can be to use the user of mobile device in advance
Set, it is also possible to be a default value (constant).
As described in background section above, soft coding is higher to the requirement of hardware configuration, therefore for mobile device
For, it is preferred to use the mode of the hard coded that resource consumption is relatively low encodes.But different type of machines, different operating system
The frame frequency of the screen-picture shown by mobile device is different, therefore, in the movement using the encoder different type of machines to collecting
When the first on-screen data corresponding to the screen-picture of equipment carries out hard coded, need encoder is carried out different settings, with
So that it can adaptive different mobile device, adaptation procedure is more complicated, and also likely can cause the video after coding
The frame frequency of data is relatively low (possibly lower than 25 frames per second), it is impossible to meet live requirement well.
Being directed to this, the present invention (can be that user is set in advance, it is also possible to be one according to the first frame frequency set in advance
Individual acquiescence constant value), T can be calculated0=1000ms/f (f is the first frame frequency) is to obtain the two frame video datas that expectation collects
Time interval, then can be at interval of T0Time carries out an on-screen data collection, so, the on-screen data collected just tool
There is stable frame frequency f (the first frame frequency).
Mobile device accordingly, for different types, it is not necessary to be individually for the encoder that its configuration is adaptive, and base again
In the on-screen data of stable frame frequency, the video data of stable code check can be obtained by coding.
Wherein it is possible to utilize application programming interfaces Opengl ES to shown by the screen of mobile device in the way of screenshotss
On-screen data be acquired.The time of the two frame video datas that i.e. can collect according to the first calculated expectation of frame frequency
Interval T0, per interval T0Screen-picture shown by the screen of mobile device is carried out a shot operation, to obtain mobile setting
The first on-screen data corresponding to standby screen-picture.
Alternatively, it is also possible to by creating virtual screen, then calls application interface Opengl ES adopts from virtual screen
Collection obtains the first on-screen data.Here the first on-screen data collected can be the video data of yuv format.
So, by utilizing application programming interfaces Opengl ES to gather the screen shown by mobile device with the first frame frequency
Picture, it is possible to obtain the first on-screen data of stable frame frequency (the first frame frequency).Thus, though the screen shown by mobile device
The frame frequency of picture changes greatly, and the on-screen data collected based on step S110 also has stable frame frequency, thus is follow-up
Coding, encapsulation provides the foundation obtaining the video data of stable code check.
Wherein, performing during step S110, it is also possible to according to default resolution, code check, between the key frame time
Every etc. video parameter be acquired.Identical with the first frame frequency addressed above, when the resolution addressed here, code check, key frame
Between the video parameter such as interval can also be to use the user of mobile device set in advance.
After acquiring the first on-screen data corresponding to the screen-picture of mobile device, it is possible to perform step S120,
The first on-screen data collected is encoded, with the first video data after being encoded.
Here it is possible to according to the operating system of mobile device, machine models, corresponding encoder can be taked the first screen
Curtain data encode.Such as, when the operating system of mobile device is android system, it is possible to use under android system
Application programming interfaces MediaCodec the first on-screen data is carried out hard coded, it is hereby achieved that stablize meeting of frame frequency
The video data (the first video data) of H264 standard.
First on-screen data is being carried out after coding obtains the first video data, it is possible to the first video data is packaged into
Oneth RTMP packet (step S130).Here it is possible to use the library file libavformat under FFmpeg by the first video
Data are packaged into a RTMP packet.
After packaging is accomplished, user just can select to use mobile device or terminal computer to carry out directly according to practical situation
Broadcast (step S140).
Wherein, user select use mobile device carry out live in the case of, can by impeller by a RTMP
Packet is sent directly to content delivery network service device (step S150).
User select use terminal computer carry out live in the case of, a RTMP packet can be sent to end
End computer, is carried out live (step S160) by terminal computer.
Here, mobile device by the way of plug-flow in LAN, RTMP packet can be sent to mobile device at
Terminal computer in same LAN.Specifically, mobile device can be come by the Quick Response Code of end of scan computer
Obtain the plug-flow address of terminal computer RTMP server, may then pass through in LAN the mode of plug-flow by RTMP data
Bag is sent to corresponding plug-flow address.Owing to uplink bandwidth of network and the stability of LAN are preferable, therefore mobile device is to end
When end computer sends data, can select higher code check, code check is the highest, and the preview effect on terminal computer is the most clear
Clear.Thus, when using terminal computer to carry out live to the screen-picture of mobile device, the user of viewing end is it can be seen that more
The live picture of good image quality.
Wherein, user select use mobile device carry out live in the case of, perform step S150 (by a RTMP
Packet is sent to content delivery network service device) before, it is also possible to gather the first audio frequency number by the mike of mobile device
According to (PCM format), this first voice data is encoded, and the first voice data after coding is encapsulated into a RTMP number
According in bag.In the RTMP packet being simultaneously packaged with video data and voice data being sent to by impeller the most again
Content distributing network server.
Here it is possible to the first voice data using the code database libfaac that increases income to collect mike carries out soft coding,
Obtain AAC format audio data.Before the first voice data is encoded, it is also possible to the first voice data collected is entered
Row noise reduction and echo cancellation process, to improve audio quality.
Wherein, the first voice data addressed here can include the sound that the mobile device of mike collection sends, also
The sound using the user of mobile device to send can be included.So, by a RTMP packet delivery to corresponding content
After the distribution webserver, viewing end can not only see the screen-picture of mobile device, it is also possible to hears mobile device and main broadcaster
The sound sent.Thus, it is possible to promote the viewing experience of spectators, and the interaction of main broadcaster and spectators can be advantageously implemented.
It addition, for the first video data after the first voice data after coding and coding, can be relative according to system
Time beats timestamp, is then packaged as a RTMP packet, re-sends to content delivery network service device (i.e. CDN service
Device).Then spectators just can obtain the audio/video flow of CDN server transcoding, appreciates high-quality live.
Fig. 2 shows that terminal computer receives after a RTMP packet of mobile device, terminal computer
The concrete indicative flowchart performing process.
See Fig. 2, in step S210, terminal computer receive the RTMP packet that mobile device sends.
As described above, terminal computer can be in same LAN with mobile device, and therefore, terminal computer can
To open local RTMP server service, in order to receive the RTMP packet that mobile device sends.
In step S220, a RTMP packet is decapsulated by terminal computer, to obtain the first video data.
Here it is possible to decode a RTMP packet by the storehouse FFmpeg that increases income, to obtain the first video data.
In step S230, terminal computer, based on the first video data, presents mobile setting on the screen of terminal computer
Standby screen-picture.
In step S240, terminal computer is with corresponding to the screen-picture of the second default frame frequency acquisition terminal computer
Second on-screen data.Wherein, the second frame frequency can be that user is set in advance.
In step S250, terminal computer carries out Video coding to the second on-screen data collected, to obtain second
Video data.
When the photographic head of terminal computer is opened, it is also possible to the photographic head shooting of collecting computer terminal obtains
Video data, for the ease of distinguish, video data here is properly termed as the 3rd video data, and terminal computer can will be adopted
The 3rd video data and the second on-screen data that collection obtains synthesize the 4th video data, and compile the 4th video data
Code, the data after coding may be considered the second video data.
Wherein, the 4th video data of synthesis can be the data of yuv format, and terminal computer can use storehouse of increasing income
X264 carries out soft coding to the 4th video data, to obtain the video data meeting H264 standard.It addition, by the 3rd video counts
Before synthesizing the 4th video data with the second on-screen data, it is also possible to the 3rd video data is carried out U.S. face and processes.
In step S260, the second video data is packaged into the 2nd RTMP packet by terminal computer.
In step S270, the 2nd RTMP packet is sent to content delivery network service device by terminal computer.
It addition, before performing step S270 (the 2nd RTMP packet is sent to content delivery network service device), also
Second audio data (PCM format) can be gathered by the mike of terminal computer, this second audio data is encoded,
And the second audio data after coding is encapsulated in the 2nd RTMP packet.
Here it is possible to the second audio data using the code database libfaac that increases income to collect mike carries out soft coding,
Obtain AAC format audio data.Before second audio data is encoded, it is also possible to the second audio data collected is entered
Row noise reduction and echo cancellation process, to improve audio quality.
Wherein, the second audio data addressed here can include the sound that the terminal computer of mike collection sends,
The sound that the user of live end sends can also be included.So, by the 2nd RTMP packet delivery to corresponding content distribution
After the webserver, viewing end can not only see the screen-picture of mobile device, it is also possible to hears the sound that main broadcaster sends.By
This, can promote the viewing experience of spectators, and can be advantageously implemented the interaction of main broadcaster and spectators.
To sum up, the present invention carries out live method based on mobile device, is possible not only to utilize application programming interfaces
Opengl ES collects the video data of the screen-picture corresponding to mobile device of stable frame frequency, it is also possible to for user (i.e.
Main broadcaster) mobile device and two kinds of direct-seedings of terminal computer are provided.Thus, it is possible to it is soft at video to make full use of terminal computer
The advantage of the aspects such as coding, photographic head U.S. face effect and the change of voice, main broadcaster can also carry out live by direct mobile phone simultaneously, and reduction makes
With threshold, the demand of different main broadcaster can be met greatly, improve live quality simultaneously.
So far, the record live method of screen is carried out in conjunction with what Fig. 1, Fig. 2 were described in detail the present invention based on mobile device.Separately
Outward, record screen live broadcasting method based on the present invention, present invention also offers and a kind of carry out the record live device of screen based on mobile device.
Fig. 3 shows the structural frames carrying out the live device of record screen according to an embodiment of the invention based on mobile device
Figure.
See Fig. 3, the embodiment of the present invention based on mobile device carry out record shield live device include the first acquisition module
31, the first coding module 32 and package module 33.
First acquisition module 31 can use application programming interfaces Opengl ES to move with the first default frame frequency collection and set
The first on-screen data corresponding to standby screen-picture.Here, the first acquisition module 31 by creating virtual screen, and can make
The first on-screen data is collected with the first default frame frequency from virtual screen with application programming interfaces Opengl ES.
The first on-screen data that first acquisition module 31 is collected can be encoded by the first coding module 32, with
The first video data after being encoded.
First video data can be packaged into a RTMP packet by package module 33.
It addition, see Fig. 3, the embodiment of the present invention based on mobile device carry out record shield live device can also be alternatively
Including sending module 34.
User select use mobile device carry out live in the case of, sending module 34 can be by a RTMP packet
Be sent to content delivery network service device, user select use terminal computer carry out live in the case of, sending module 34
Oneth RTMP packet can be sent to terminal computer.
User select to use described mobile device carry out live in the case of, this device can also include dotted line part in figure
The second acquisition module 35 and the second coding module 36 shown in point.
Second acquisition module 35 can gather the first voice data by the mike of described mobile device.Second coding mould
First voice data can be encoded by block 36, and the first voice data after coding can be encapsulated into first by package module 33
In RTMP packet.
Wherein, the detail section of the method step that each functional module shown in Fig. 3 can perform, can be found in above in association with
The related description of Fig. 1, repeats no more here.
Based on the record screen live broadcasting method addressed above, present invention also offers a kind of mobile device and record screen live broadcast system.
Wherein, record screen live broadcast system includes mobile device and the terminal computer addressed above.Below in conjunction with Fig. 4 to this
Bright mobile device and record screen live broadcast system are briefly described.
Fig. 4 shows the schematic block diagram of record screen live broadcast system according to an embodiment of the invention.
Seeing Fig. 4, wherein the content delivery network service device 30 shown in Fig. 4 is to be more clearly understood that the present invention, should
This is known, the record screen live broadcast system of the embodiment of the present invention can include including content delivery network service device 30.
Seeing Fig. 4, mobile device 10 includes screen 1, processor 2, memorizer 3 and communication module 4.
Processor 2 can use application programming interfaces Opengl ES to gather what screen 1 was presented with the first default frame frequency
The first on-screen data corresponding to screen-picture, encodes the first on-screen data, with the first video counts after being encoded
According to, the first video data is packaged into a RTMP packet by processor 2, and a RTMP packet is stored memorizer 3
In.
Wherein, user select use mobile device 10 carry out live in the case of, processor 2 can pass through communication module
Oneth RTMP packet is sent to content delivery network service device 30 by 4.
User select use terminal computer 20 carry out live in the case of, processor 2 can by communication module 4 will
Oneth RTMP packet is sent to terminal computer 20.
Preferably, mobile device 10 and terminal computer 20 are in same LAN.Terminal computer 20 receives mobile
The RTMP packet that equipment 10 sends by the way of plug-flow in LAN, and a RTMP packet is unsealed
Dress, to obtain the first video data, terminal computer 20, based on the first video data, presents on the screen of terminal computer 20
The screen-picture of mobile device, and with the second screen corresponding to the screen-picture of the second default frame frequency acquisition terminal computer 20
Curtain data, terminal computer 20 carries out Video coding to the second on-screen data collected, to obtain the second video data, eventually
Second video data is packaged into the 2nd RTMP packet by end computer 20, and the 2nd RTMP packet is sent to content distribution
The webserver 30.
So far, in conjunction with Fig. 3, mobile device 10 and terminal computer 20 have been done basic explanation, wherein, about mobile device
10, the detail section of the method step that terminal computer 20 can perform, can be found in the related description above in association with Fig. 1, Fig. 2,
Here repeat no more.
Above describe the live method and apparatus of the record screen according to the present invention, mobile device in detail by reference to accompanying drawing
And record screen live broadcast system.
Additionally, the method according to the invention is also implemented as a kind of computer program, this computer program include for
Perform the computer program code instruction of the above steps limited in the said method of the present invention.Or, according to the present invention's
Method is also implemented as a kind of computer program, and this computer program includes computer-readable medium, at this meter
On calculation machine computer-readable recording medium, storage has the computer program of the above-mentioned functions limited in the said method for perform the present invention.Ability
Field technique personnel will also understand is that, in conjunction with various illustrative logical blocks, module, circuit and algorithm described by disclosure herein
Step may be implemented as electronic hardware, computer software or a combination of both.
What flow chart in accompanying drawing and block diagram showed the system and method for the multiple embodiments according to the present invention may be real
Existing architectural framework, function and operation.In this, each square frame in flow chart or block diagram can represent module, a journey
Sequence section or a part for code, a part for described module, program segment or code comprises one or more for realizing regulation
The executable instruction of logic function.It should also be noted that at some as in the realization replaced, in square frame, the function of institute's labelling also may be used
With to be different from accompanying drawing the order generation of institute's labelling.Such as, two continuous print square frames can essentially perform substantially in parallel,
They can also perform sometimes in the opposite order, and this is depending on involved function.It is also noted that block diagram and/or stream
The combination of the square frame in each square frame in journey figure and block diagram and/or flow chart, can be with function or the operation performing regulation
Special hardware based system realize, or can realize with the combination of specialized hardware with computer instruction.
Being described above various embodiments of the present invention, described above is exemplary, and non-exclusive, and also
It is not limited to disclosed each embodiment.In the case of the scope and spirit without departing from illustrated each embodiment, for this skill
For the those of ordinary skill in art field, many modifications and changes will be apparent from.The selection of term used herein, purport
Explaining the principle of each embodiment, actual application or the improvement to the technology in market best, or making the art
Other those of ordinary skill is understood that each embodiment disclosed herein.
Claims (16)
1. carry out, based on mobile device, the method that record screen is live, including:
Application programming interfaces Opengl ES is used to gather corresponding to the screen-picture of described mobile device with the first default frame frequency
The first on-screen data；
Described first on-screen data collected is encoded, with the first video data after being encoded；
Described first video data is packaged into a RTMP packet.
Method the most according to claim 1, wherein uses application programming interfaces Opengl ES to gather described on-screen data
Step includes:
Create virtual screen；
Application programming interfaces Opengl ES is used to gather described first screen number with the first default frame frequency from described virtual screen
According to.
Method the most according to claim 1, also includes:
User select to use described mobile device carry out live in the case of, a described RTMP packet is sent to content
The distribution webserver；
User select use terminal computer carry out live in the case of, a described RTMP packet is sent to described end
End computer.
Method the most according to claim 3, wherein,
User select to use terminal computer carry out live in the case of, described mobile device by plug-flow in LAN by institute
State the described terminal computer that RTMP packet is sent to be in same LAN with described mobile device.
Method the most according to claim 3, wherein, selects to use described mobile device to carry out live situation user
Under, the method also includes:
The first voice data is gathered by the mike of described mobile device；
Described first voice data is encoded；
The first voice data after coding is encapsulated in a described RTMP packet.
Method the most according to claim 3, user select use terminal computer carry out live in the case of, the method
Also include:
The RTMP packet that described mobile device sends is received by described terminal computer；
A described RTMP packet is decapsulated by described terminal computer, to obtain described first video data；
Described terminal computer, based on described first video data, presents described movement on the screen of described terminal computer and sets
Standby screen-picture；
Described terminal computer gathers the second screen corresponding to the screen-picture of described terminal computer with the second default frame frequency
Curtain data；
Described terminal computer carries out Video coding to the second on-screen data collected, to obtain the second video data；
Described second video data is packaged into the 2nd RTMP packet by described terminal computer；
Described 2nd RTMP packet is sent to content delivery network service device by described terminal computer.
Method the most according to claim 6, also includes:
Described terminal computer gathers second audio data by the mike of described terminal computer；
Described terminal computer carries out audio coding to described second audio data；
Second audio data after coding is encapsulated in described 2nd RTMP packet by described terminal computer.
Method the most according to claim 6, also includes:
Described terminal computer gathers the photographic head of described terminal and shoots the 3rd video data obtained；
The 3rd video data collected and described second on-screen data are synthesized the 4th video counts by described terminal computer
According to；
Described terminal computer is to described 4th coding video data, to obtain described second video data.
Method the most according to claim 8, wherein, described 4th video data is yuv format data, and described terminal calculates
The step of described 4th coding video data is included by machine:
Described terminal computer uses the storehouse x264 that increases income that described 4th video data is carried out soft coding, to obtain meeting H264 mark
The second accurate video data.
10. carry out, based on mobile device, the device that record screen is live, including:
First acquisition module, sets for using application programming interfaces Opengl ES to gather described movement with the first default frame frequency
The first on-screen data corresponding to standby screen-picture；
First coding module, for encoding described first on-screen data collected, with first after being encoded
Video data；
Package module, for being packaged into a RTMP packet by described first video data.
11. devices according to claim 10, wherein,
Described first acquisition module creates virtual screen, and uses application programming interfaces Opengl ES with the first default frame frequency
Described first on-screen data is gathered from described virtual screen.
12. devices according to claim 10, also include: sending module, wherein,
User select to use described mobile device carry out live in the case of, described sending module is by described RTMP data
Bag is sent to content delivery network service device,
User select use terminal computer carry out live in the case of, described sending module is by a described RTMP packet
It is sent to described terminal computer.
13. devices according to claim 12, wherein,
User select to use terminal computer carry out live in the case of, described sending module by plug-flow in LAN by institute
State the described terminal computer that RTMP packet is sent to be in same LAN with described mobile device.
14. devices according to claim 12, wherein, select to use described mobile device to carry out live situation user
Under, this device also includes:
Second acquisition module, for gathering the first voice data by the mike of described mobile device；
Second coding module, for the first voice data is encoded, wherein,
The first voice data after coding is encapsulated in a described RTMP packet by described package module.
15. 1 kinds shield live mobile device for carrying out record, including:
Screen；
Memorizer；
Communication module；And
Processor, described processor uses application programming interfaces Opengl ES to gather described screen institute with the first default frame frequency
The first on-screen data corresponding to the screen-picture presented, encodes, after being encoded described first on-screen data
First video data, described first video data is packaged into a RTMP packet by described processor, and by described first
RTMP packet stores in described memorizer,
Wherein, user select to use described mobile device carry out live in the case of, described processor is by described communication mould
A described RTMP packet is sent to content delivery network service device by block,
User select use terminal computer carry out live in the case of, described processor by described communication module by described
Oneth RTMP packet is sent to described terminal computer.
16. 1 kinds of record screen live broadcast systems, including:
Mobile device according to claim 15；And
Terminal computer, wherein, described mobile device and described terminal computer are in same LAN, and described terminal calculates
Machine receives the described RTMP packet that described mobile device sends by the way of plug-flow in LAN, and to described first
RTMP packet decapsulates, and to obtain described first video data, described terminal computer is based on described first video counts
According to, the screen of described terminal computer presents the screen-picture of described mobile device, and with the second default frame frequency collection
The second on-screen data corresponding to the screen-picture of described terminal computer, the described terminal computer the second screen to collecting
Curtain data carry out Video coding, and to obtain the second video data, described second video data is packaged into by described terminal computer
2nd RTMP packet, and described 2nd RTMP packet is sent to content delivery network service device.
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| CN112565807B (en) * | 2020-12-04 | 2023-07-04 | 北京七维视觉传媒科技有限公司 | Method, apparatus, medium and computer program product for live broadcast in a local area network |
| CN113411661A (en) * | 2021-06-11 | 2021-09-17 | 北京百度网讯科技有限公司 | Method, apparatus, device, storage medium and program product for recording information |
| CN115866248A (en) * | 2022-11-08 | 2023-03-28 | 格兰菲智能科技有限公司 | Video transcoding method and device, computer equipment and storage medium |
| CN115866248B (en) * | 2022-11-08 | 2024-01-19 | 格兰菲智能科技有限公司 | Video transcoding method, device, computer equipment and storage medium |
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Application publication date: 20170104 |