CN108471548A - Live video fast playing method and device - Google Patents
Live video fast playing method and device Download PDFInfo
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- CN108471548A CN108471548A CN201810070825.9A CN201810070825A CN108471548A CN 108471548 A CN108471548 A CN 108471548A CN 201810070825 A CN201810070825 A CN 201810070825A CN 108471548 A CN108471548 A CN 108471548A
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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
- H04N21/266—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]
- H04N21/20—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
- H04N21/26216—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 involving the channel capacity, e.g. network bandwidth
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- Engineering & Computer Science (AREA)
- Databases & Information Systems (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
A kind of live video fast playing method of present invention offer and device, wherein method include：The data acquisition system that the first client uploads in real time is received, the data acquisition system includes video data；The playing request of the second client transmission is received, the playing request includes the first current network bandwidth of second client；Judge whether first current network bandwidth meets the second and open condition, if so, the first sub-video data in video data is sent to the second client terminal playing, wherein the first sub-video data includes key frame recently received in the video data.The above method is when the first current network bandwidth for judging the second client meets the second and opens condition, to include that the first sub-video data of key frame recently received in video data is sent to the second client, to reconstruct complete image on a second client, the playing request for achieving the purpose that the second client of quick response, greatly promotes user experience.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of live video fast playing methods and device.
Background technology
The rise in live streaming field has driven the rapidly development of audio and video industry, the mobile application in the field to continuously emerge, pole
Big enriches people’s lives, meets Different Culture and the spiritual demand of people, promotes harmonious development and the warp of society
Ji development.The development of an industry has also been driven simultaneously.
Internet video live broadcasting due to the advantages of combining image, sound and word, especially provide a user it is instant with it is mutual
Dynamic exchange and conmmunication mode and favored by user, any active ues quantity of net cast community is continuously increased, spectators'
The also constantly diversification of viewing demand, more and more people serve not only as spectators, and enter live streaming industry initially as main broadcaster.But
It is the enthusiasm that the phenomenon that live video responds not in time greatly affected that user watches live video, also reduces spectators
Experience and viscosity to live video website, to cause undesirable influence to the business of live video website.
Invention content
A kind of live video fast playing method of present invention offer and device, to solve to be broadcast live in viewing in the prior art
The technical issues of being responded not in time when video.
In order to solve the above-mentioned technical problem, one aspect of the present invention provides a kind of live video fast playing method, including：
The data acquisition system that the first client uploads in real time is received, the data acquisition system includes video data；
Receive the playing request of the second client transmission, the playing request includes the first current of second client
Network bandwidth；
Judge whether first current network bandwidth meets the second and open condition, if so, the first son in video data is regarded
Frequency evidence is sent to the second client terminal playing, wherein the first sub-video data includes recently received in the video data
Key frame.
Further, after the first sub-video data in video data being sent to the second client terminal playing, further include,
The high definition switching request of the second client transmission is received, the high definition switching request includes the second current network bandwidth and delay
Rate；
The video resolution to match with second client, the video point are determined according to the high definition switching request
Resolution includes SD, the high definition and super clear that rank is classified from low to high；
The second sub-video data corresponding with the video resolution is sent to second client；Second sub-video
Data include key frame recently received in the video data.
Further, judge whether first current network bandwidth meets the second and open condition, if it is not, by the video data
It is sent to the second client, for being played after the second client-cache preset time.
Further, it includes receiving the time difference of continuous two key frames no more than 50ms that the second, which opens condition,.
Another aspect of the present invention provides a kind of quick playing device of live video, including：
First receiving module, the data acquisition system uploaded in real time for receiving the first client, the data acquisition system include regarding
Frequency evidence；
Second receiving module, the playing request sent for receiving the second client, the playing request include described the
First current network bandwidth of two clients；
Judgment module opens condition for judging whether first current network bandwidth meets the second, if so, the first hair of triggering
Send module；
First sending module, for the first sub-video data in video data to be sent to the second client terminal playing,
In, the first sub-video data includes key frame recently received in the video data.
Further, above-mentioned apparatus further includes third receiving module, analysis module and the second sending module；
Wherein, third receiving module, the high definition switching request for receiving the transmission of the second client, the high definition switching are asked
It asks including the second current network bandwidth and retardation rate；
Analysis module, for determining that the video to match with second client is differentiated according to the high definition switching request
Rate, the video resolution include SD, the high definition and super clear that rank is classified from low to high；
Second sending module will be used for the second sub-video data corresponding with the video resolution and be sent to described second
Client；Second sub-video data includes key frame recently received in the video data.
Further, judgment module further includes the triggering the when first current network bandwidth does not meet the second and opens condition
Three sending modules；
Third sending module, for the video data to be sent to the second client, so that the second client-cache is pre-
If being played after the time.
Further, it includes receiving the time difference of continuous two key frames no more than 50ms that the second, which opens condition,.
Live video fast playing method and device provided by the invention, when the first current network bandwidth of the second client
To include that the first sub-video data of key frame recently received in video data is sent to second when meeting the second and opening condition
Client achievees the purpose that the playing request of the second client of quick response, pole to reconstruct complete image on a second client
Big promotion user experience.
Description of the drawings
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.Wherein：
Fig. 1 is a flow diagram of live video fast playing method provided in an embodiment of the present invention；
Fig. 2 is another flow diagram of live video fast playing method provided in an embodiment of the present invention；
Fig. 3 is a structural schematic diagram of the quick playing device of live video provided in an embodiment of the present invention；
Fig. 4 is another structural schematic diagram of the quick playing device of live video provided in an embodiment of the present invention.
In the accompanying drawings, identical component uses identical reference numeral.Attached drawing is not drawn according to actual ratio.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained all other without creative efforts
Embodiment shall fall within the protection scope of the present invention.
Embodiment one
The present embodiment provides a kind of live video fast playing methods, are applied to server end, are used for the second client
(i.e. live video playing request end) sends video data, can quick look at video, achieve the purpose that the second opens, greatly
Promote user experience.
Fig. 1 is a flow diagram of live video fast playing method provided in an embodiment of the present invention, as shown in Figure 1,
The present embodiment provides a kind of live video fast playing methods, including：
Step 101, the data acquisition system that the first client uploads in real time is received, the data acquisition system includes video data.
First client visible is the client where main broadcaster, and the data acquisition system of acquisition is uploaded to service by the first client
Device, so that data acquisition system is sent to the second client by server.Data acquisition system includes video data, further includes audio data.
Step 102, the playing request that the second client is sent is received, the playing request includes second client
First current network bandwidth.
First current network bandwidth is for obtaining the current network speed of the second client, so as to according to the second visitor of network speed size pair
The playing request at family end carries out different responses.
Step 103, judge whether first current network bandwidth meets the second and open condition, if so, going to step 103a execution.
If it is not, going to step 103b execution.
Specifically, it includes receiving the time difference of continuous two key frames no more than 50ms, i.e., the first current net that the second, which opens condition,
Network bandwidth needs to meet the time difference for receiving continuous two key frames no more than 50ms.Playing request further includes time gap, i.e.,
Second user end to server transmit packets to receive server between the data replied after receiving the data packet when
Between it is poor, when time gap is in preset threshold range, condition is opened to meet the second, otherwise, not meeting the second opens condition.Predetermined threshold value
It can be configured according to actual conditions, not limited herein.
The first sub-video data in video data is sent to the second client terminal playing by step 103a, wherein the first son
Video data includes key frame recently received in the video data.
Frame is the base unit for forming video image.Key frame is also I frames, it is the important frame in interframe compression coding,
It is the coded frame of full frame compression；Only use the data of I frames with regard to restructural complete image when decoding；I frames are without necessarily referring to other
Picture and generate.
First sub-video data includes recently received key frame namely I frames.First sub-video data further includes I frames
One or more frames afterwards, the one or more frame belong to same picture group (Group of with the recently received I frames
Pictures, abbreviation GOP).In Video coding, GOP is using first I frame as starting point in video sequence, with second I frame knot
Tail but the frame sequence for not including second I frame.One GOP includes an I frame and several P frames and B frames.In video sequence
Second I frame is the starting point of another GOP.
In the present embodiment, when the first current network bandwidth for judging the second client meets the second and opens condition, server
End will include that the first sub-video data of key frame recently received in video data is sent to the second client, with the
Complete image is reconstructed in two clients, achievees the purpose that the playing request of the second client of quick response, greatly promotes user
Experience.
Video data is sent to the second client by step 103b, for being played after the second client-cache preset time.
Specifically, preset time period can be arranged according to actual conditions, such as 5s or 10s, it does not limit herein.Second
First current network bandwidth of client does not meet the second when opening condition, then the second client is needed first to carry out the slow of video data
It deposits, then plays out again.At this point, server end no longer needs, for the playing request of the second client of summary responses, first to send out
It send recently received key frame to the second client, video data need to only be sent to the second client, the second client is slow
It is played after depositing preset time.
Further, as shown in Fig. 2, by the first sub-video data in video data be sent to the second client terminal playing it
Afterwards, further include step 104- steps 106.
Wherein, step 104, the high definition switching request that the second client is sent is received, the high definition switching request includes the
Two current network bandwidths and retardation rate.
Unstable due to Network status, network bandwidth is dynamic change at any time, current in order to more accurately obtain
Network bandwidth, the second client are needed when sending high definition switching request to server by the current network band of the second client
Width is sent to server together, and does not use the first current network bandwidth obtained when the second client transmission playing request.
High definition switching request further includes switching son request, switches the first son that son request is sent to the second client for replacing server
The video resolution of video data.
Step 105, the video resolution to match with second client, institute are determined according to the high definition switching request
It includes SD, the high definition and super clear that rank is classified from low to high to state video resolution.
Specifically, server is after receiving high definition switching request, when determining video resolution, according to the second current net
Network bandwidth and retardation rate determine, to select to be suitble to the video resolution of the second current network bandwidth.Video resolution includes
SD that rank is classified from low to high, high definition and super clear, SD, high definition and super clear required network bandwidth are incremented by successively.If
Current network bandwidth is sufficiently large, selects the video resolution of super clear rank, otherwise, the video resolution of SD rank may be selected,
Specific setting condition, can be configured according to actual conditions, not limit herein.
Step 106, the second sub-video data corresponding with the video resolution is sent to second client；The
Two sub-video datas include key frame recently received in the video data.
Since server is constantly receiving the video data that uploads in real time of the first client, the first sub-video data
The recently received key frame that the recently received key frame for including includes with the second sub-video data is different
's.In fact, the second sub-video data is continuous in time with the first sub-video data and first sub-video data is opened
At the beginning of the time begin earlier than the second sub-video data.
Embodiment two
The present embodiment is device embodiment, for executing the method in embodiment one.
Fig. 3 is a structural schematic diagram of the quick playing device of live video provided in an embodiment of the present invention, as shown in figure 3,
The present embodiment provides a kind of quick playing devices of live video, including the first receiving module 201, the second receiving module 202, judgement
Module 203 and the first sending module 204.
Wherein, the first receiving module 201, the data acquisition system uploaded in real time for receiving the first client, the data set
Conjunction includes video data；
Second receiving module 202, the playing request for receiving the transmission of the second client, the playing request include described
First current network bandwidth of the second client；
Judgment module 203 opens condition for judging whether first current network bandwidth meets the second, if so, triggering the
One sending module 204；Wherein, it includes receiving the time difference of continuous two key frames no more than 50ms that the second, which opens condition,.
First sending module 204, for the first sub-video data in video data to be sent to the second client terminal playing,
Wherein, the first sub-video data includes key frame recently received in the video data.
Further, above-mentioned apparatus further includes third receiving module 205, analysis module 206 and the second sending module 207；
Wherein, third receiving module 205, the high definition switching request for receiving the transmission of the second client, the high definition are cut
It includes the second current network bandwidth and retardation rate to change request；
Analysis module 206, for determining the video to match with second client according to the high definition switching request
Resolution ratio, the video resolution include SD, the high definition and super clear that rank is classified from low to high；
Second sending module 207, will be used for the second sub-video data corresponding with the video resolution be sent to it is described
Second client；Second sub-video data includes key frame recently received in the video data.
Further, judgment module 203 further includes the triggering when first current network bandwidth does not meet the second and opens condition
Third sending module 208.
Third sending module 208, for the video data to be sent to the second client, for the second client-cache
It is played after preset time.
Since the present embodiment is device embodiment corresponding with embodiment one, for details, reference can be made to the record in embodiment one,
Details are not described herein.
It should be understood that disclosed embodiment of this invention is not limited to specific structure disclosed herein, processing step
Or material, and the equivalent substitute for these features that those of ordinary skill in the related art are understood should be extended to.It should also manage
Solution, term as used herein is used only for the purpose of describing specific embodiments, and is not intended to limit.
" one embodiment " or " embodiment " mentioned in specification means the special characteristic described in conjunction with the embodiments, structure
Or characteristic includes at least one embodiment of the present invention.Therefore, the phrase " reality that specification various places throughout occurs
Apply example " or " embodiment " the same embodiment might not be referred both to.
In addition, described feature, structure or characteristic can be attached to one or more in fact in any other suitable manner
It applies in example.In the above description, some concrete details, such as material etc., to provide to the embodiment of the present invention are provided
Comprehensive understanding.However, those skilled in the relevant art are readily apparent that, the present invention is not necessarily to said one or multiple concrete details
It realizes, or the realizations such as other methods, component, material can also be used.In other examples, known structure, material or operation
It is not shown or described in detail in order to avoid obscuring various aspects of the invention.
Although above-mentioned example is used to illustrate principle of the present invention in one or more application, for the technology of this field
For personnel, without departing substantially from the principle of the present invention and thought, hence it is evident that can in form, the details of usage and implementation
It is upper that various modifications may be made and does not have to make the creative labor.Therefore, the present invention is defined by the appended claims.
Claims (8)
1. a kind of live video fast playing method, which is characterized in that including：
The data acquisition system that the first client uploads in real time is received, the data acquisition system includes video data；
The playing request of the second client transmission is received, the playing request includes the first current network of second client
Bandwidth；
Judge whether first current network bandwidth meets the second and open condition, if so, by the first sub-video number in video data
According to being sent to the second client terminal playing, wherein the first sub-video data includes key recently received in the video data
Frame.
2. live video fast playing method according to claim 1, which is characterized in that by the first son in video data
Video data is sent to after the second client terminal playing, further includes, and receives the high definition switching request that the second client is sent, described
High definition switching request includes the second current network bandwidth and retardation rate；
The video resolution to match with second client, the video resolution are determined according to the high definition switching request
The SD classified from low to high including rank, high definition and super clear；
The second sub-video data corresponding with the video resolution is sent to second client；Second sub-video data
Including key frame recently received in the video data.
3. live video fast playing method according to claim 1, which is characterized in that judge first current network
Whether bandwidth, which meets the second, is opened condition, if it is not, the video data is sent to the second client, so that the second client-cache is pre-
If being played after the time.
4. live video fast playing method according to any one of claim 1-3, which is characterized in that the second opens condition packet
The time difference for receiving continuous two key frames is included no more than 50ms.
5. a kind of quick playing device of live video, which is characterized in that including：
First receiving module, the data acquisition system uploaded in real time for receiving the first client, the data acquisition system includes video counts
According to；
Second receiving module, the playing request for receiving the transmission of the second client, the playing request include second visitor
First current network bandwidth at family end；
Judgment module opens condition, if so, triggering first sends mould for judging whether first current network bandwidth meets the second
Block；
First sending module, for the first sub-video data in video data to be sent to the second client terminal playing, wherein the
One sub-video data includes key frame recently received in the video data.
6. the quick playing device of live video according to claim 5, which is characterized in that further include third receiving module,
Analysis module and the second sending module；
Wherein, third receiving module, the high definition switching request for receiving the transmission of the second client, the high definition switching request packet
Include the second current network bandwidth and retardation rate；
Analysis module, for determining the video resolution to match with second client according to the high definition switching request,
The video resolution includes SD, the high definition and super clear that rank is classified from low to high；
Second sending module will be used for the second sub-video data corresponding with the video resolution and be sent to second client
End；Second sub-video data includes key frame recently received in the video data.
7. the quick playing device of live video according to claim 5, which is characterized in that judgment module further includes when described
First current network bandwidth does not meet the second when opening condition, triggers third sending module；
Third sending module, for the video data to be sent to the second client, when default for the second client-cache
Between after play.
8. the quick playing device of live video according to any one of claim 5-7, which is characterized in that the second opens condition packet
The time difference for receiving continuous two key frames is included no more than 50ms.
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| CN201810070825.9A CN108471548B (en) | 2018-01-25 | 2018-01-25 | Live video quick playing method and device |
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|---|---|
| CN108471548B (en) | 2021-07-06 |
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