CN106604055A - Video smooth transmission and live broadcasting uplink method based on complex weak mobile network environment - Google Patents
Video smooth transmission and live broadcasting uplink method based on complex weak mobile network environment Download PDFInfo
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- CN106604055A CN106604055A CN201710011238.8A CN201710011238A CN106604055A CN 106604055 A CN106604055 A CN 106604055A CN 201710011238 A CN201710011238 A CN 201710011238A CN 106604055 A CN106604055 A CN 106604055A
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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
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
- H04N21/26208—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints
-
- 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
-
- 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
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
- H04N21/2625—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists for delaying content or additional data distribution, e.g. because of an extended sport event
-
- 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
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
- H04N21/2662—Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a video smooth transmission and live broadcasting uplink method based on a complex weak mobile network environment, and the video smooth transmission and live broadcasting uplink method relates to the field of mobile application technologies. Through re-unpacking audio and video frames, using a udp protocol, reasonably designing the size of an audio and video packet and developing a retransmitting algorithm and a smooth transmission algorithm, the video smooth transmission and live broadcasting uplink method can achieve the purposes of being stable in uploading code rate of mobile live broadcasting audio and video, low in latency and being high in reliability of application scenes in the complex and changeable weak mobile network environment.
Description
Technical field
The present invention relates to Mobile solution technical field, more particularly to a kind of video based on complicated weak mobile network environment is flat
It is sliding to send live uplink method.
Background technology
Live has been one of very common entertainment selection in the current network life.The movement of main flow is live substantially all at present
It is the audiovisual compression data of mobile terminal to be sent directly on the machine of cdn sources by rtmp agreements realize.But, Wo Menzhi
The characteristics of road, the suitable complexity of the mobile network of user, mobile network is that signal intensity is unstable, and with geographic location changes and becomes
Change, packet loss change is complicated, and Jing often causes network jitter severe, because live main flow uses the upload of rtmp agreements,
Rtmp agreements belong to the category of tcp agreements, eventually produce the drawbacks of postponing accumulation, ultimately cause the embodiment of " vulnerable network ".
The content of the invention
It is an object of the invention to provide a kind of video smoothing based on complicated weak mobile network environment sends live up
Method, so as to solve foregoing problems present in prior art.
To achieve these goals, the technical solution used in the present invention is as follows：
A kind of video smoothing based on complicated weak mobile network environment sends live uplink method, comprises the steps：
S1, obtains video code flow variable bitrate；
S2, according to the video code flow variable bitrate, calculates byte-sized sendSizePerSec of transmission per second；
S3, according to the calculated sendSizePerSec of S2, calculates video bag and gives out a contract for a project interval timeGap and interval of giving out a contract for a project
Inside once give out a contract for a project size sendSizeOneTime；
S4, setting is given out a contract for a project, and interval is interior to initialize size realSendSize=0 of actually giving out a contract for a project；
S5, arranges video cache transmit queue size videoWaitSenderQueue, has when newly wrapping into enqueue every time,
Cycle traversal caching transmit queue, arranges traversal loop when secondary video bag size rawDataSize；
S6, judges caching transmit queue video data total size allVideoDataSizeInQueue, when described slow
Deposit transmit queue video data total size less than given threshold transmission data volume when, i.e.,：allVideoDataSizeInQueue
<=(sendSizePerSec_>>2) when, S7 is performed, when the caching transmit queue video data total size is more than the setting
During the transmission data volume of threshold value, i.e.,：allVideoDataSizeInQueue_>(sendSizePerSec_>>2), when, perform S8-
S11；
S7, judges realSendSize+rawDataSize>=sendSizeOneTime_, if it is, stop sending,
Traversal is exited, and otherwise, video data is sent to video server；
S8, according to allVideoDataSizeInQueue and sendSizeOneTime, calculates the caching transmit queue
In, remaining bag size leftSize；
S9, according to leftSize and timeGap, in calculating the caching transmit queue, the remaining bag for also needing to send is big
Little moreSendSize；
S10, according to sendSizeOneTime, moreSendSize, realSendSize and rawDataSize, calculates real
Border is sent out one less and wraps difference gap1 for sending size and actual transmission size of estimating for causing, and, actual one bag of many transmissions
The actual transmission size for causing sends difference gap2 of size with estimating；
S11, judges whether to meet gap1>0, and gap2>0, if it is, judging whether to meet gap1<=gap2, if
Be then to stop sending, exit traversal, otherwise, video data is sent to video server.
Preferably, in S2, byte-sized sendSizePerSec of transmission per second is calculated using equation below：
SendSizePerSec_=bitrate*1024/8.
Preferably, in S3, given out a contract for a project using equation below calculating video bag and be spaced timeGap：
TimeGap=Epoll::msecEpoch_-lastCheckSendVideoMSec_；
In formula,
Epoll::msecEpoch_：Represent this local clock for obtaining.
lastCheckSendVideoMSec_：Represent the local clock that the inspection of last program cycle index is obtained；
Size sendSizeOneTime of once giving out a contract for a project in interval of giving out a contract for a project is calculated using equation below：
SendSizeOneTime_=timeGap*sendSizePerSec_/1000.
Preferably, in S5, video cache transmit queue size videoWaitSenderQueue is set smaller than
In 1000, the traversal loop is set to 1300 bytes when secondary video bag size rawDataSize, in S6, the setting threshold
It is worth for 250ms.
Preferably, in S8, remaining bag size leftSize is calculated according to equation below：
LeftSize=allVideoDataSizeInQueue_-sendSizeOneTime_.
Preferably, in S9, remaining bag size moreSendSize for also needing to send is carried out according to equation below
Calculate：MoreSendSize=leftSize*timeGap/5000.
Preferably, in S10, the gap1 and gap2 is respectively adopted equation below and is calculated：
Gap1=(sendSizeOneTime_+moreSendSize)-realSendSize；
Gap2=(realSendSize+rawDataSize)-(sendSizeOneTime_+moreSendSize).
The invention has the beneficial effects as follows：Video smoothing based on complicated weak mobile network environment provided in an embodiment of the present invention
Live uplink method is sent, by unpacking again to audio/video frames, using udp agreements, and appropriate design audio frequency and video bag size,
Exploitation retransmission algorithm and smooth transmission algorithm, it is possible to achieve under vulnerable network environment complicated and changeable, reach the live sound of movement and regard
Frequency uploads stable code check, low latency and meets the purpose of application scenarios higher reliability.
Description of the drawings
Fig. 1 is method flow schematic diagram provided in an embodiment of the present invention.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with accompanying drawing, the present invention is entered
Row is further described.It should be appreciated that specific embodiment described herein is not used to only to explain the present invention
Limit the present invention.
As shown in figure 1, embodiments provide a kind of video smoothing based on complicated weak mobile network environment sending
Live uplink method, comprises the steps：
S1, obtains video code flow variable bitrate；
S2, according to the video code flow variable bitrate, calculates byte-sized sendSizePerSec of transmission per second；
S3, according to the calculated sendSizePerSec of S2, calculates video bag and gives out a contract for a project interval timeGap and interval of giving out a contract for a project
Inside once give out a contract for a project size sendSizeOneTime；
S4, setting is given out a contract for a project, and interval is interior to initialize size realSendSize=0 of actually giving out a contract for a project；
S5, arranges video cache transmit queue size videoWaitSenderQueue, has when newly wrapping into enqueue every time,
Cycle traversal caching transmit queue, arranges traversal loop when secondary video bag size rawDataSize；
S6, judges caching transmit queue video data total size allVideoDataSizeInQueue, when described slow
Deposit transmit queue video data total size less than given threshold transmission data volume when, i.e.,：allVideoDataSizeInQueue
<=(sendSizePerSec_>>2) when, S7 is performed, when the caching transmit queue video data total size is more than the setting
During the transmission data volume of threshold value, i.e.,：allVideoDataSizeInQueue_>(sendSizePerSec_>>2), when, perform S8-
S11；
S7, judges realSendSize+rawDataSize>=sendSizeOneTime_, if it is, stop sending,
Traversal is exited, and otherwise, video data is sent to video server；
S8, according to allVideoDataSizeInQueue and sendSizeOneTime, calculates the caching transmit queue
In, remaining bag size leftSize；
S9, according to leftSize and timeGap, in calculating the caching transmit queue, the remaining bag for also needing to send is big
Little moreSendSize；
S10, according to sendSizeOneTime, moreSendSize, realSendSize and rawDataSize, calculates real
Border is sent out one less and wraps difference gap1 for sending size and actual transmission size of estimating for causing, and, actual one bag of many transmissions
The actual transmission size for causing sends difference gap2 of size with estimating；
S11, judges whether to meet gap1>0, and gap2>0, if it is, judging whether to meet gap1<=gap2, if
Be then to stop sending, exit traversal, otherwise, video data is sent to video server.
Wherein, in S2, byte-sized sendSizePerSec of transmission per second is calculated using equation below：
SendSizePerSec_=bitrate*1024/8.
In S3, given out a contract for a project using equation below calculating video bag and be spaced timeGap：
TimeGap=Epoll::msecEpoch_-lastCheckSendVideoMSec_；
In formula,
Epoll::msecEpoch_：Represent this local clock for obtaining.
lastCheckSendVideoMSec_：Represent the local clock that the inspection of last program cycle index is obtained；
Size sendSizeOneTime of once giving out a contract for a project in interval of giving out a contract for a project is calculated using equation below：
SendSizeOneTime_=timeGap*sendSizePerSec_/1000.
In S5, video cache transmit queue size videoWaitSenderQueue is set smaller than equal to 1000,
The traversal loop is set to 1300 bytes when secondary video bag size rawDataSize, and in S6, the given threshold is
250ms。
In S8, remaining bag size leftSize is calculated according to equation below：
LeftSize=allVideoDataSizeInQueue_-sendSizeOneTime_.
In S9, remaining bag size moreSendSize for also needing to send is calculated according to equation below：
MoreSendSize=leftSize*timeGap/5000.
In S10, the gap1 and gap2 is respectively adopted equation below and is calculated：
Gap1=(sendSizeOneTime_+moreSendSize)-realSendSize；
Gap2=(realSendSize+rawDataSize)-(sendSizeOneTime_+moreSendSize).
By using above-mentioned technical proposal disclosed by the invention, having obtained following beneficial effect：The embodiment of the present invention is carried
For the video smoothing based on complicated weak mobile network environment send live uplink method, by tearing open again to audio/video frames
Bag, using udp agreements, and appropriate design audio frequency and video bag size, exploitation retransmission algorithm and smooth transmission algorithm, it is possible to achieve multiple
Under miscellaneous changeable vulnerable network environment, reach that the live audio frequency and video of movement upload stable code check, low latency and to meet application scenarios higher
The purpose of reliability.
Each embodiment in this specification is described by the way of progressive, what each embodiment was stressed be with
The difference of other embodiment, between each embodiment identical similar part mutually referring to.
Those skilled in the art should be understood that the sequential of the method and step that above-described embodiment is provided can be entered according to practical situation
Row accommodation, is concurrently carried out also dependent on practical situation.
All or part of step in the method that above-described embodiment is related to can be instructed by program correlation hardware come
Complete, described program can be stored in the storage medium that computer equipment can read, for performing the various embodiments described above side
All or part of step described in method.The computer equipment, for example：Personal computer, server, the network equipment, intelligent sliding
Dynamic terminal, intelligent home device, wearable intelligent equipment, vehicle intelligent equipment etc.；Described storage medium, for example：RAM、
ROM, magnetic disc, tape, CD, flash memory, USB flash disk, portable hard drive, storage card, memory stick, webserver storage, network cloud storage
Deng.
Finally, in addition it is also necessary to explanation, herein, such as first and second or the like relational terms be used merely to by
One entity or operation are made a distinction with another entity or operation, and are not necessarily required or implied these entities or operation
Between there is any this actual relation or order.And, term " including ", "comprising" or its any other variant are anticipated
Covering including for nonexcludability, so that a series of process, method, commodity or equipment including key elements not only includes that
A little key elements, but also including other key elements being not expressly set out, or also include for this process, method, commodity or
The intrinsic key element of equipment.In the absence of more restrictions, the key element for being limited by sentence "including a ...", does not arrange
Except also there is other identical element in including the process of the key element, method, commodity or equipment.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
Depending on protection scope of the present invention.
Claims (7)
1. a kind of video smoothing based on complicated weak mobile network environment sends live uplink method, it is characterised in that include as
Lower step：
S1, obtains video code flow variable bitrate；
S2, according to the video code flow variable bitrate, calculates byte-sized sendSizePerSec of transmission per second；
S3, according to the calculated sendSizePerSec of S2, calculates video bag and gives out a contract for a project interval timeGap and interval interior of giving out a contract for a project
Secondary size sendSizeOneTime of giving out a contract for a project；
S4, setting is given out a contract for a project, and interval is interior to initialize size realSendSize=0 of actually giving out a contract for a project；
S5, arranges video cache transmit queue size videoWaitSenderQueue, has when newly wrapping into enqueue every time, the cycle
Traversal caching transmit queue, arranges traversal loop when secondary video bag size rawDataSize；
S6, judges caching transmit queue video data total size allVideoDataSizeInQueue, when the caching is sent out
When sending transmission data volume of the queue video data total size less than given threshold, i.e.,：allVideoDataSizeInQueue<=
(sendSizePerSec_>>2) when, S7 is performed, when the caching transmit queue video data total size is more than the setting threshold
During the transmission data volume of value, i.e.,：allVideoDataSizeInQueue_>(sendSizePerSec_>>2), when, perform S8-
S11；
S7, judges realSendSize+rawDataSize>=sendSizeOneTime_, if it is, stopping sending, exits
Traversal, otherwise, sends video data to video server；
S8, according to allVideoDataSizeInQueue and sendSizeOneTime, calculates in the caching transmit queue, remains
Remaining bag size leftSize；
S9, according to leftSize and timeGap, calculates the remaining bag size for also needing to send in the caching transmit queue
moreSendSize；
S10, according to sendSizeOneTime, moreSendSize, realSendSize and rawDataSize, calculates actual few
Send out one and wrap estimating of causing and send size and actual difference gap1 for sending size, and, it is actual more to send a bag and cause
Actual transmission size and estimate send size difference gap2；
S11, judges whether to meet gap1>0, and gap2>0, if it is, judging whether to meet gap1<=gap2, if it is,
Stop sending, exit traversal, otherwise, video data is sent to video server.
2. the video smoothing based on complicated weak mobile network environment according to claim 1 sends live uplink method, its
It is characterised by, in S2, byte-sized sendSizePerSec of transmission per second is calculated using equation below：
SendSizePerSec_=bitrate*1024/8.
3. the video smoothing based on complicated weak mobile network environment according to claim 1 sends live uplink method, its
It is characterised by, in S3, is given out a contract for a project using equation below calculating video bag and be spaced timeGap：
TimeGap=Epoll::msecEpoch_-lastCheckSendVideoMSec_；
In formula,
Epoll::msecEpoch_：Represent this local clock for obtaining.
lastCheckSendVideoMSec_：Represent the local clock that the inspection of last program cycle index is obtained；
Size sendSizeOneTime of once giving out a contract for a project in interval of giving out a contract for a project is calculated using equation below：
SendSizeOneTime_=timeGap*sendSizePerSec_/1000.
4. the video smoothing based on complicated weak mobile network environment according to claim 1 sends live uplink method, its
It is characterised by, in S5, video cache transmit queue size videoWaitSenderQueue is set smaller than equal to 1000,
The traversal loop is set to 1300 bytes when secondary video bag size rawDataSize, and in S6, the given threshold is
250ms。
5. the video smoothing based on complicated weak mobile network environment according to claim 1 sends live uplink method, its
It is characterised by, in S8, remaining bag size leftSize is calculated according to equation below：
LeftSize=allVideoDataSizeInQueue_-sendSizeOneTime_.
6. the video smoothing based on complicated weak mobile network environment according to claim 1 sends live uplink method, its
It is characterised by, in S9, remaining bag size moreSendSize for also needing to send is calculated according to equation below：
MoreSendSize=leftSize*timeGap/5000.
7. the video smoothing based on complicated weak mobile network environment according to claim 1 sends live uplink method, its
It is characterised by, in S10, the gap1 and gap2 is respectively adopted equation below and is calculated：
Gap1=(sendSizeOneTime_+moreSendSize)-realSendSize；
Gap2=(realSendSize+rawDataSize)-(sendSizeOneTime_+moreSendSize).
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| CN201710011238.8A CN106604055B (en) | 2017-01-06 | 2017-01-06 | Video smoothing based on complicated weak mobile network environment sends live streaming uplink method |
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| CN108540448A (en) * | 2018-03-05 | 2018-09-14 | 上海迪维欧电子设备有限公司 | A kind of stream medium data sending method |
| CN111556345A (en) * | 2020-03-19 | 2020-08-18 | 视联动力信息技术股份有限公司 | Network quality detection method and device, electronic equipment and storage medium |
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| Publication number | Publication date |
|---|---|
| CN106604055B (en) | 2019-08-09 |
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