CN110087094A - A kind of video living transmission system and its signal processing method based on mixing cloud storage - Google Patents
A kind of video living transmission system and its signal processing method based on mixing cloud storage Download PDFInfo
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- CN110087094A CN110087094A CN201910342028.6A CN201910342028A CN110087094A CN 110087094 A CN110087094 A CN 110087094A CN 201910342028 A CN201910342028 A CN 201910342028A CN 110087094 A CN110087094 A CN 110087094A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1095—Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/21—Server components or server architectures
- H04N21/218—Source of audio or video content, e.g. local disk arrays
- H04N21/2187—Live feed
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/231—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
- H04N21/4307—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The embodiment of the invention discloses a kind of video living transmission systems and its signal processing method based on mixing cloud storage, including end is broadcast live, cloud service platform and broadcasting end, end is broadcast live, original audio, video data is acquired by audio-video collection unit, original audio, video data is transmitted to broadcasting end by cloud service platform processing and shows, cloud service platform includes the public cloud unit and private clound unit for establishing communication transfer mutually, public cloud unit is as the common service for playing end and live streaming end upload data, public cloud unit includes shared cloud storage unit and storage time administrative unit, shared cloud storage unit saves live streaming resource, storage time administrative unit deletes the data in shared cloud storage unit on time；This programme guarantees making full use of for memory space by way of shared memory space, while improving storage space utilization, guarantees the resource conservation request for timely responding to all users, reduces memory space hiring cost.
Description
Technical field
The present embodiments relate to video living transmission system technical fields, and in particular to a kind of view based on mixing cloud storage
Frequency live broadcast system and its signal processing method.
Background technique
With being constantly progressive for mobile communications network and mobile terminal technology, mobile video live streaming initially enters social life
The motion education of various aspects living, net cast technology attracts attention.Such as Faculty and Students are whole using movement
The environment that can be broadcast live teaching whenever and wherever possible and watch course live streaming is realized by mobile video live broadcast system in end.
Mobile technology is combined with education, is played an important role in education melting allthe life.System is broadcast live in current multichannel video
System makes traditional be broadcast live be transformed into novel Media mode, and the identity of main broadcaster and user also switch to promoter and participant,
Compared to traditional unidirectional live streaming, there is obvious effect to the liveness and viscosity of live streaming viewing.
Typically now in live streaming, existing video living transmission system is typically all to lease memory space in third party, then
To each publicly-owned memory space of user with division equivalent per family, but some users infrequently save resource, memory space
Dispatching flexibility is poor, causes a large amount of memory space idle, increases the cost that third party leases memory space.
In addition for existing video living transmission system when recording preservation live streaming resource, resource data is generally stored directly in sight
On the server or smart machine seen, when the live streaming resource data of preservation is bigger, then smart machine or server are influenced
Normal use is likely to result in smart machine or server viewing Caton, so if leasing third in video living transmission system
The data space of square trustship will greatly improve viewing experience, prevent from influencing smart machine or server when saving
Normal operation.
Summary of the invention
For this purpose, the embodiment of the present invention provide it is a kind of based on mixing cloud storage video living transmission system and its signal processing side
Method guarantees making full use of for memory space by the way of shared memory space, to solve net cast system in the prior art
The problem of system needs to lease a large amount of memory space, improves system operation cost.
To achieve the goals above, embodiments of the present invention provide the following technical solutions: one kind is based on mixing cloud storage
Video living transmission system, including live streaming end, cloud service platform and play end, it is described live streaming end live information pass through cloud service
Platform carries out information processing, and information resources that treated are shown at broadcasting end, and the cloud service platform includes establishing communication mutually
The public cloud unit and private clound unit of transmission, the public cloud unit upload the common of data as end and live streaming end is played
Service, the private clound unit upload the independent platform of live streaming end data, the public cloud unit packet as system manager
Include shared cloud storage unit and storage time administrative unit, the shared cloud storage unit saves live streaming resource, when the storage
Between administrative unit delete the data in shared cloud storage unit on time.
As a preferred solution of the present invention, the shared cloud storage unit is supplemented by primary memory cell and supply
Storage unit composition, the total memory space and video living transmission system of the primary memory cell and supply supplement storage unit
It is identical to lease memory space, the primary memory cell is divided into several temporary memory spaces, each use for playing end
There is quantitative storage deposit according to the size division of temporary memory space per family, the user for playing end can be in respective quantitative storage
Deposit saves live streaming resource.
As a preferred solution of the present invention, all users of storage time administrative unit real-time monitoring quantify
The holding time for storing file in disk, after document time, which saves, is more than setting time, then storage time administrative unit is deleted automatically
The file saved except quantitative storage deposit.
As a preferred solution of the present invention, the use priority of the shared cloud storage unit is greater than supply supplement
The use priority of storage unit, when the temporary memory space of the primary memory cell by user occupancy when, the supply
Supplement storage unit marks off temporary storage cell for users to use in time, and the storage time administrative unit is automatically deleted confession
After the file in the temporary storage cell of supplement storage unit, temporary storage cell is uniformly restored to supply supplement automatically and deposits
In storage unit.
As a preferred solution of the present invention, the cloud service platform also includes
The asynchronous packing unit of audio-video, for several will to be extracted on the common data-link of the original audio, video data
For classifying packing at audio data and video data, mark point is corresponding in audio data and the respective number of video data after mark point
The same group is denoted as according to the label branch on chain；
Pretreatment unit, for being corrected to audio data, and the beginning of the data-link in audio data increases one end
The buffered data chain of fixed duration and blank, then video data is corrected, and match video data and audio data again
Same group of other label branch information on respective data-link；
Coding unit passes through respectively respectively to by the pretreatment unit treated audio data and video data
Independent coding unit pushes to broadcasting end after carrying out compression processing to data-link.
As a preferred solution of the present invention, the fixation duration of the buffered data chain determines that method includes following step
It is rapid:
It is single according to the shared memory space of data-link and decoding when audio data and the successive correction process of video data
Member and the performance parameter of coding unit to calculate separately the coding time difference of the two and decode the time difference, and fixed duration=coding time difference+
Decode the time difference.
As a preferred solution of the present invention, the original audio-video number that the mark point takes each time point to acquire
According to data-link close to beginning 1-3 address.
In addition the present invention also provides it is a kind of based on mixing cloud storage video living transmission system and its signal processing method,
Include the following steps:
Step 100, the original audio, video data at end is broadcast live in acquisition in real time, and original audio, video data is pushed to cloud
Service platform；
Step 200, to the asynchronous packing of audio, video data, and playing end for audio, video data simultaneously match；
When step 300, user issue preservation video request, user can be protected video record by shared cloud storage unit
It is stored to the quantitative storage deposit of individual subscriber distribution, and the video data saved can be shifted at the appointed time in section；
Data in step 400, quantitative storage deposit are more than after saving duration cleaning, and the quantitative storage deposit of user is as altogether
Enjoy space use, the preservation video request of random response other users.
As a preferred solution of the present invention, in step 200, to audio source and source video sequence sync mark
Manage specific steps are as follows:
Step 201 successively extracts one on the common data-link of each time point original audio, video data collected
For classifying packing at audio data and video data, mark point correspondence is respective in audio data and video data after a mark point
Label branch on data-link is denoted as the same group, and audio data and video data are corrected processing simultaneously；
Step 202 increases the buffered data chain of the fixed duration in one end and blank at the beginning of the data-link of audio data,
Obtain target audio data；
Step 203, using the new label branch of target audio data as foundation, correct pair on the data-link of video data
The match information for answering same group of other label branch, obtains target video data.
As a preferred solution of the present invention, in step 300, when shared cloud storage unit has the interim of free time
When memory space, the preservation video request of the temporary memory space response user of the shared cloud storage unit, when shared cloud is deposited
When the not idle temporary memory space of storage unit, supplement storage unit can be supplied by rear, interim storage sky be temporarily provided
Between respond user preservation video request.
Embodiments of the present invention have the advantages that
(1) present invention can effectively guarantee making full use of for memory space, together by sharing to cloud storage space
When memory space be divided into front end applications module and rear supplement supplying module, while improving storage space utilization,
Guarantee that the resource conservation for timely responding to all users is requested, reduce memory space hiring cost, to solve video in the prior art
The problem of live broadcast system needs to lease a large amount of memory space, improves system operation cost；
(2) multichannel video live broadcast system of the invention is by cloud service platform to the audio signal and video at live streaming end
Signal is separately packaged, and reduces time and difficulty that audio-video concentrates packing simultaneously, and audio signal and vision signal are not done mutually
It disturbs, when problem occurs for either signal, it is ensured that the normal broadcast of video program improves failure tolerant rate and intelligent scheduling；
(3) present invention waits the matched buffered data chain of video data synchronization by increasing in audio data, solves video
Data and audio data solve the problems, such as that data are packaged in the time difference of coding and decoding process, at the same guarantee video data with
The synchronism output of audio data.
Detailed description of the invention
It, below will be to implementation in order to illustrate more clearly of embodiments of the present invention or technical solution in the prior art
Mode or attached drawing needed to be used in the description of the prior art are briefly described.It should be evident that the accompanying drawings in the following description
It is only exemplary, it for those of ordinary skill in the art, without creative efforts, can be with
It is extended according to the attached drawing of offer and obtains other implementation attached drawings.
Structure depicted in this specification, ratio, size etc., only to cooperate the revealed content of specification, for
Those skilled in the art understands and reads, and is not intended to limit the invention enforceable qualifications, therefore does not have technical
Essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing what the present invention can be generated
Under effect and the purpose that can reach, should all still it fall in the range of disclosed technology contents obtain and can cover.
Fig. 1 is video living transmission system structural block diagram of the invention；
Fig. 2 is shared cloud storage cellular construction block diagram of the invention；
Fig. 3 is live broadcast system signal processing method flow diagram of the invention.
In figure:
End is broadcast live in 1-；2- cloud service platform；3- plays end；4- audio-video collection unit；5- public cloud unit；6- is privately owned
Cloud unit；
The asynchronous packing unit of 201- audio-video；202- pretreatment unit；203- coding unit；
501- shares cloud storage unit；502- storage time administrative unit；
5011- primary memory cell；5012- supply supplement storage unit；5013- temporary memory space；5014- is quantitative
Store disk.
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this theory
Content disclosed by bright book is understood other advantages and efficacy of the present invention easily, it is clear that described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
Embodiment 1
As depicted in figs. 1 and 2, the present invention provides a kind of video living transmission systems based on mixing cloud storage, including live streaming
End 1, cloud service platform 2 and broadcasting end 3.
The course of work of the video living transmission system of present embodiment is specially that end 1 is broadcast live to adopt by audio-video collection unit 4
The live information of the original audio, video data of collection live streaming terminal, live streaming end 1 carries out information processing, processing by cloud service platform 2
Information resources afterwards are playing the display of end 3, and cloud service platform 2 not only has audio, video data processing function, while also having cloud
Store function, therefore user can record in cloud storage space and save live content, and the user for missing live streaming is allow to pass through this
Function is reviewed again, improves usage experience.
Existing video living transmission system is typically all to lease memory space in third party, then to each with dividing per family
The publicly-owned memory space of the user of equivalent, but some users infrequently save resource, the dispatching flexibility of memory space is poor, makes
It is idle at a large amount of memory space, increase the cost that third party leases memory space.
The present invention can effectively guarantee making full use of for memory space by sharing to cloud storage space, simultaneously will
Memory space is divided into front end applications module and rear supplement supplying module guarantees while improving storage space utilization
The resource conservation request of all users is timely responded to, needs lease largely to deposit to solve video living transmission system in the prior art
The problem of storing up space, improving system operation cost.
Cloud service platform 2 includes the public cloud unit 5 and private clound unit 6 for establishing communication transfer mutually, the public cloud
Unit 5 is as playing end 1 and the common service of the upload of end 3 data being broadcast live, and the private clound unit 6 is as on system manager
The independent platform of live streaming 3 data of end is passed, the public cloud unit 5 includes that shared cloud storage unit 501 and storage time management are single
Member 502, the shared cloud storage unit 501 save live streaming resource, and the storage time administrative unit 502 is deleted shared on time
Data in cloud storage unit 501.
The video living transmission system lease memory space of present embodiment for users to use, and uses shared memory space
Mode, guarantee making full use of for memory space, reduce the operating cost of video living transmission system, cloud stores disk and keeps in video 3-5
It, temporary video can be transferred in other storaging pieces, when the video time of preservation is more than to save number of days, then storage time
Administrative unit 502 is automatically deleted video, consequently facilitating dynamic adjusts the amount of ram of cloud service platform 2, prevents memory from influencing too much
The speed of service of cloud service platform 2 improves the stability of system work.
The shared cloud storage unit 501 is made of primary memory cell 5011 and supply supplement storage unit 5012, institute
The lease for stating the total memory space and video living transmission system of primary memory cell 5011 and supply supplement storage unit 5012 stores
Space is identical, and the primary memory cell 5011 is divided into each of several temporary memory spaces 5013, the broadcasting end 3
With having quantitative storage deposit 5014 according to the size division of temporary memory space 5013 per family, the user for playing end 3 can be each
From quantitative storage deposit 5014 save live streaming resources, all users of 502 real-time monitoring of storage time administrative unit temporarily deposits
Store up the holding time of file in space 5013.
The shared implementation of shared cloud storage unit 501 will be carefully stated below:
Primary memory cell 5011 is divided into several temporary memory spaces 5013, in general, temporary memory space
5013 number is much smaller than user's number of video living transmission system, and in general, the number of temporary memory space 5013 is video
The 1/2-3/4 of user's number of live broadcast system；
The temporary memory space 5013 of user's distribution is the communal space, when available free temporary memory space 5013,
The user for playing end 3 can save live streaming resources in quantitative storage deposit 5014,；
After document time, which saves, is more than setting time, then storage time administrative unit 502 is automatically deleted quantitative storage deposit
The quantitative storage deposit 5014 of 5014 files saved, the user can be used as communal space use.
The use priority of shared cloud storage unit 5011 is greater than the use priority of supply supplement storage unit 5012,
When the temporary memory space 5013 of the primary memory cell 5011 by user occupancy when, the supply supplements storage unit
5012 mark off temporary storage cell for users to use in time, and the storage time administrative unit 502 is automatically deleted supply supplement
After file in the temporary storage cell of storage unit 5012, temporary storage cell is uniformly restored to supply supplement storage automatically
In unit 5012, that is to say, that the temporary memory space 5013 of primary memory cell 301 is by user occupancy, supply supplement
Storage unit 5012 can supplement offer temporary storage space, and the user for playing end 3 can temporarily depositing in supplement storage unit 3012
It stores up space and saves live streaming resource.
Storage time administrative unit 502 is automatically deleted the text in the temporary storage cell of supply supplement storage unit 5012
After part, temporary storage cell is uniformly restored to automatically in supply supplement storage unit 5012.
Additionally as the extension of present embodiment, the shared cloud storage unit 501 of present embodiment can be divided into local mind
Through net, that is to say, that video living transmission system base area domain addresses is different, can be divided into multiple local area networks, while according to local area network
Viewing number difference, by the memory space of local area network according to local area network enrollment divide, according to above-mentioned principle to each
The memory space of local area network regulates and controls, and can reduce the complexity of memory space regulation, improves flexibility and stability.
Embodiment 2
As shown in Figure 1, the cloud service platform 2 of present embodiment also includes
The asynchronous packing unit 201 of audio-video, it is several for will be extracted on the common data-link of the original audio, video data
For classifying packing at audio data and video data, mark point correspondence is respective in audio data and video data after a mark point
Label branch on data-link is denoted as the same group；
Pretreatment unit 202, for being corrected to audio data, and the beginning of the data-link in audio data increases
The buffered data chain of the fixed duration in one end and blank, then video data is corrected, and match video data and audio again
Same group of other label branch information on the respective data-link of data；
Coding unit 203 leads to respectively to by the pretreatment unit 202 treated audio data and video data
It crosses after coding unit 203 independent carries out compression processing to data-link and pushes to broadcasting end 3.
In general, the video data and audio data that each time point acquires simultaneously are of different sizes, it is by timing node of 1s
Example, the audio data of acquisition is greater than audio data, in the prior art, in order to realize video data and audio data
Synchronous, transmission will be packaged with after the audio data and video data encoding after acquisition by being generally used, this is resulted in number
Excessive according to wrapping, the data volume transmitted every time is just very big, it is possible to lead to not transmit.
It is most important the reason is that video data and audio data are of different sizes, cause the time of coding different, using packing
The mode of processing realizes synchronization, also adds time and the difficulty of packing.
In the present embodiment, due under same network speed on consolidated network route, the transmission rate and size of data of data
It is not directly dependent upon, therefore, is transferred to by way of handling video data and audio data using branch and plays end, then
It is matched to complete to be played simultaneously, solves the problems, such as that data are packaged.
It uses 0.5s to 0.8s for the timing node for acquiring data in the present embodiment, is adopted to avoid each time point
It is excessive to collect data, causes to encode the time difference and the decoding time difference is excessive.Due to the data of single time point acquisition in this way carry out coding and
Decoding, the required time is all very small, and therefore, the fixation duration of buffered data chain is minimum, in actual play, when adjacent
Between put broadcasting interval will not on viewing have slack influence, can substantially be ignored.
The effect of buffered data chain is decoded when the target audio high priority data of each time point is sent to after playing end, into
Row plays, and what is first played is the buffered data chain of extremely short blank, and then target video data is linked to send to broadcasting end and solve
After code, at this point, the data playback of buffered data chain finishes, decoded target video data is synchronous with audio data chain to be realized
It is played simultaneously.
It is single according to the shared memory space of data-link and decoding when audio data and the successive correction process of video data
Member and the performance parameter of coding unit to calculate separately the coding time difference of the two and decode the time difference, and fixed duration=coding time difference+
Decode the time difference, tangible present embodiment in actual use, the fixation duration of buffered data chain be generally slightly larger than decoding the time difference and
The sum of time difference is encoded, to exclude other faint influences, due to same in decoded target audio data and target video data
The label branch of one group of ratio may be matched, when target video data be linked to send to play end decode after, buffered data
The data of chain do not finish also, and the label branch after decoding in target video data can not target sound frequency after matching and decoding
It scores a little according to subscript, is played simultaneously at this point, target video data can wait and carry out matching.
Data-link with referring to the coding of audio data and video data under certain storage format in the present embodiment
Location daisy chaining.
The data-link beginning for the original audio, video data that mark point and label branch generally take each time point to acquire connects
1-3 continuous coded address, since the matching a little of scoring of audio data and video data subscript is not intended in numerous sound
Matched in frequency evidence and video data, but in order to target video data push to play end decoding after can wait or
It avoids the fixation duration of buffered data chain and synchronizes and match with decoded target audio data, therefore, the label branch
Without uniquely existing in entire data-link, do not need using special label, it is only necessary in audio data and video counts yet
According to beginning can match.
In this approach, it is not to say that audio data is identical with the address of label branch on video data, but
When referring to and being marked at the beginning, the information for being classified as same group of other label branch is identical.
Embodiment 3
As shown in figure 3, the present invention also provides one kind to be based in order to aid in illustrating the working method of video living transmission system
The signal processing method for mixing the video living transmission system of cloud storage, includes the following steps:
Step 100, the original audio, video data at end is broadcast live in acquisition in real time, and original audio, video data is pushed to cloud
Service platform, original audio data source are mainly the human voice signal of microphone acquisition and the audio signal of computer, original
Beginning video data source is mainly camera video signal and computer screen signal.
Step 200, to the asynchronous packing of audio, video data, and playing end for audio, video data simultaneously match；
Specific steps are played to audio data and video data matching are as follows:
Step 201 successively extracts one on the common data-link of each time point original audio, video data collected
For classifying packing at audio data and video data, mark point correspondence is respective in audio data and video data after a mark point
Label branch on data-link is denoted as the same group, and audio data and video data are corrected processing simultaneously；
Step 202 increases the buffered data chain of the fixed duration in one end and blank at the beginning of the data-link of audio data,
Obtain target audio data；
Step 203, using the new label branch of target audio data as foundation, correct pair on the data-link of video data
The match information for answering same group of other label branch, obtains target video data.
In the prior art, it in order to realize that video data is synchronous with audio data, is generally used the sound after acquisition
Transmission is packaged with after frequency evidence and video data encoding, this results in excessive in data packet, and the data volume transmitted every time is just
It is very big, it is possible to lead to not transmit.
It is most important the reason is that video data and audio data are of different sizes, cause the time of coding different, using packing
The mode of processing realizes synchronization, also adds time and the difficulty of packing.
In the present embodiment, due under same network speed on consolidated network route, the transmission rate and size of data of data
It is not directly dependent upon, therefore, is transferred to by way of handling video data and audio data using branch and plays end, then
It is matched to complete to be played simultaneously, solves the problems, such as that data are packaged.
When step 300, user issue preservation video request, user can be protected video record by shared cloud storage unit
It is stored to the quantitative storage deposit of individual subscriber distribution, and the video data saved can be shifted at the appointed time in section；
Data in step 400, quantitative storage deposit are more than after saving duration cleaning, and the quantitative storage deposit of user is as altogether
Enjoy space use, the preservation video request of random response other users.
In step 300, when shared cloud storage unit has idle temporary memory space, the shared cloud storage
The preservation video request of the temporary memory space response user of unit, when the not idle interim storage of shared cloud storage unit
When space, supplement storage unit can be supplied by rear, the preservation video request that temporary memory space responds user is temporarily provided.
Multichannel video live broadcast system of the invention is by cloud service platform to the audio signal and vision signal at live streaming end
It is separately packaged, reduces time and difficulty that audio-video concentrates packing simultaneously, and audio signal and vision signal are not interfere with each other,
When problem occurs for either signal, it is ensured that the normal broadcast of video program improves failure tolerant rate and intelligent scheduling.
The present invention waits the matched buffered data chain of video data synchronization by increasing in audio data, solves video counts
It solves the problems, such as that data are packaged in the time difference of coding and decoding process according to audio data, while guaranteeing video data and sound
The synchronism output of frequency evidence.
Although above having used general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention are fallen within the scope of the claimed invention.
Claims (10)
1. a kind of video living transmission system based on mixing cloud storage, including live streaming end (1), cloud service platform (2) and broadcasting end
(3), the original audio, video data of end (1) is broadcast live by audio-video collection unit (4) acquisition for live streaming end (1), described original
Audio, video data, which is stored and is transmitted to by cloud service platform (2), plays end (3) display, it is characterised in that: the cloud clothes
Business platform (2) includes the public cloud unit (5) and private clound unit (6) for establishing communication transfer mutually, the public cloud unit (5)
As playing end (1) and the common service of end (3) upload data being broadcast live, the private clound unit (6) is as on system manager
The independent platform of live streaming end (3) data is passed, the public cloud unit (5) includes shared cloud storage unit (501) and storage time
Administrative unit (502), the shared cloud storage unit (501) save live streaming resource, and the storage time administrative unit (502) is pressed
When delete data in shared cloud storage unit (501).
2. a kind of video living transmission system based on mixing cloud storage according to claim 1, it is characterised in that: described shared
Cloud storage unit (501) is made of primary memory cell (5011) and supply supplement storage unit (5012), the main storage
The lease memory space phase of unit (5011) and the total memory space and video living transmission system of supply supplement storage unit (5012)
Together, the primary memory cell (5011) is divided into several temporary memory spaces (5013), each use for playing end (3)
There is quantitative storage to deposit (5014) according to the size division of temporary memory space (5013) per family, the user for playing end (3) can
Live streaming resource is saved in respective quantitative storage deposit (5014).
3. a kind of multichannel video live broadcast system based on mixing cloud storage according to claim 2, it is characterised in that: institute
The holding time for stating quantitative storage deposit (5014) interior file of all users of storage time administrative unit (502) real-time monitoring, when
Document time is saved more than after setting time, then storage time administrative unit (502) is automatically deleted quantitative storage deposit (5014) and protects
The file deposited.
4. a kind of video living transmission system based on mixing cloud storage according to claim 2, it is characterised in that: described shared
The use priority of cloud storage unit (501) is greater than the use priority of supply supplement storage unit (5012), when described main
The temporary memory space (5013) of storage unit (5011) by user occupancy when, supply supplement storage unit (5012) and
When mark off temporary storage cell for users to use, the storage time administrative unit (502) be automatically deleted supply supplement storage
After file in the temporary storage cell of unit (5012), temporary storage cell is uniformly restored to supply supplement storage unit automatically
(5012) in.
5. a kind of video living transmission system based on mixing cloud storage according to claim 2, which is characterized in that the cloud clothes
Business platform (2) also includes
The asynchronous packing unit (201) of audio-video, for several will to be extracted on the common data-link of the original audio, video data
For classifying packing at audio data and video data, mark point is corresponding in audio data and the respective data of video data after mark point
Label branch on chain is denoted as the same group；
Pretreatment unit (202), for being corrected to audio data, and the beginning of the data-link in audio data increases one end
The buffered data chain of fixed duration and blank, then video data is corrected, and match video data and audio data again
Same group of other label branch information on respective data-link；
Coding unit (203) passes through respectively to by the pretreatment unit (202) treated audio data and video data
Coding unit (203) independent pushes to broadcasting end (3) after carrying out compression processing to data-link.
6. a kind of video living transmission system based on mixing cloud storage according to claim 5, which is characterized in that the buffering
The fixation duration of data-link determines that method includes the following steps:
Shared memory space and decoding unit and volume when audio data and the successive correction process of video data, according to data-link
The performance parameter of code unit is come the coding time difference and the decoding time difference that both calculate separately, when the fixed duration=coding time difference+decoding
Difference.
7. a kind of data transmission method of net cast according to claim 5, which is characterized in that the mark point takes often
1-3 address of the data-link of the original audio, video data of one time point acquisition close to beginning.
8. a kind of signal processing method of the video living transmission system based on mixing cloud storage, which comprises the steps of:
Step 100, the original audio, video data at end is broadcast live in acquisition in real time, and original audio, video data is pushed to cloud service and is put down
Platform；
Step 200, to the asynchronous packing of audio, video data, and playing end for audio, video data simultaneously match；
When step 300, user issue preservation video request, video record can be saved in use by shared cloud storage unit by user
The quantitative storage of family personal distribution is deposited, and the video data saved can be shifted at the appointed time in section；
Data in step 400, quantitative storage deposit are more than after saving duration cleaning, and the quantitative storage deposit of user is used as the communal space
It uses, the preservation video request of random response other users.
9. a kind of signal processing method of video living transmission system based on mixing cloud storage according to claim 8,
It is characterized in that, in step 200, specific steps is handled to audio source and source video sequence sync mark are as follows:
Step 201 successively extracts a mark on the common data-link of each time point original audio, video data collected
For classifying packing at audio data and video data, mark point is corresponding in audio data and the respective data-link of video data after note point
On label branch be denoted as the same group, audio data and video data are corrected processing simultaneously；
Step 202 increases the buffered data chain of the fixed duration in one end and blank at the beginning of the data-link of audio data, obtains mesh
Mark audio data；
Step 203, using the new label branch of target audio data as foundation, the correspondence corrected on the data-link of video data is same
The match information of the other label branch of group, obtains target video data.
10. a kind of signal processing method of video living transmission system based on mixing cloud storage according to claim 8,
It is characterized in that, in step 300, when there is idle temporary memory space in shared cloud storage unit, the shared cloud storage
The preservation video request of the temporary memory space response user of unit, when idle interim storage is not empty for shared cloud storage unit
Between when, can by rear supply supplement storage unit temporarily provide temporary memory space respond user preservation video request.
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