CN105392023A - Video live broadcasting method and device in network jitter environment - Google Patents
Video live broadcasting method and device in network jitter environment Download PDFInfo
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- CN105392023A CN105392023A CN201510716762.6A CN201510716762A CN105392023A CN 105392023 A CN105392023 A CN 105392023A CN 201510716762 A CN201510716762 A CN 201510716762A CN 105392023 A CN105392023 A CN 105392023A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000003139 buffering effect Effects 0.000 claims description 18
- 238000001514 detection method Methods 0.000 claims description 15
- 230000000052 comparative effect Effects 0.000 claims description 5
- 230000014759 maintenance of location Effects 0.000 abstract 2
- 230000003750 conditioning effect Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—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
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/23406—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving management of server-side video buffer
-
- 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
- H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
- H04N21/64746—Control signals issued by the network directed to the server or the client
- H04N21/64761—Control signals issued by the network directed to the server or the client directed to the server
- H04N21/64769—Control signals issued by the network directed to the server or the client directed to the server for rate control
-
- 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
- H04N21/65—Transmission of management data between client and server
- H04N21/654—Transmission by server directed to the client
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Security & Cryptography (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The present invention relates to a video live broadcasting method and a device in a network jitter environment. The method comprises the steps of (S1) receiving a video and storing the video in a video buffer area, (S2) detecting the capacity of a retention data packet in the buffer area, (S3) comparing the capacity of the retention data packet and a preset capacity threshold, and adjusting a video playing speed according to a comparison result. Through dynamically adjusting the playing speed at a local player end, the negative impact of video playing viewing experience brought by network jitter is reduced, and thus a user experience is improved.
Description
Technical field:
The invention belongs to Internet video and play field, particularly relate to a kind of net cast method under network jitter environment and device.
Background technology:
Along with huge numbers of families are come in the Internet, internet video live broadcasting becomes people's a kind of online communication form loved by all.No matter be mobile phone terminal or computer end, the thinking of sharing of the Internet is rooted in the hearts of the people, and the theme of network direct broadcasting and content are abnormal abundant, form the situation that net cast demand has a large capacity and a wide range.
But existing network quality always can not meet the demand of internet video live broadcasting.One of typical performance of network quality instability is network jitter.Network jitter is defined as adjacent data bag in network and arrives the maximum value of delay variation.The adjacent data difference wrapped in time delay reflects the fluctuation of network data transmission ability.
Network jitter is one of reason causing video playback Caton phenomenon.Caton phenomenon has a strong impact on the viewing experience of user.
The live process of internet video can be reduced to 2 steps: video source by internet transmission video packets of data to playback equipment end; Playback equipment end receiver, video is also play.In this process, network quality be related to video packets of data can in time, without lose (complete) be transferred to playback equipment end.
Be different from less demanding to Internet Transmission real-time of File Upload and Download, net cast needs higher real-time, requires that video packets of data is according to specific time beat reaching on the time playback equipment end.If packet can arrive playback equipment end on time, result of broadcast, by being smooth, there will not be Caton phenomenon.On the contrary, if the time that packet arrives playback equipment end is not expected, then card pauses or waits for that time delay is exactly inevitable.
Relative to the uncertainty of network capacity, internet video live broadcasting then adopts fixed speed to carry out displaying video usually.The data-handling capacity that the downlink network data transmission capabilities of fluctuation is stable with this locality is difficult to be mated preferably.
Prior art is usually introduced buffering area and is solved this mismatch problem.Data by buffer are detained function, reduce the impact of network capacity fluctuation ability of data processing.
Buffering area can the fixing static cache of the buffer memory degree of depth, also can be the dynamic buffering of buffer memory degree of depth dynamic change.
With the temporal information going out group packet, patent of invention CN100373890C judges whether that the buffer memory degree of depth of dynamic conditioning buffer queue solves network jitter problem according to packet of joining the team in buffer queue.
The buffer queue introducing the dynamic change of the buffer memory degree of depth can reduce the impact of network jitter on transmission of video to a certain extent, but dynamic buffering needs to take more storage resources, the dynamic conditioning buffer memory degree of depth can take more computational resource, both increases the burden of receiving terminal from Time and place two aspects.
Summary of the invention:
Given this, the present invention is intended to propose a kind of net cast method under network jitter environment and device, by reducing the negative effect of network jitter to video playback viewing experience at the broadcasting speed of local player end dynamic conditioning this locality, thus promote user experience.
First aspect, the net cast method that the present invention proposes comprises the steps: step S1, and receiver, video is also stored in screen buffer; Step S2, detects the capacity being detained packet in buffering area; Step S3, compares the capacity being detained packet and the capacity threshold pre-set, according to comparative result, and adjustment video playout speed.
Further, the capacity threshold in this net cast method step S3 comprises first threshold, if the capacity of the delay packet obtained by step S2 is less than described first threshold, then adjusts broadcasting speed and is less than the normal playback speed preset.
Further, the capacity threshold in this net cast method step S3 also comprises Second Threshold, if the capacity of the delay packet obtained by step S2 is greater than described Second Threshold, then adjustment is play speed and is greater than the normal playback speed preset.
Further, in this net cast method step S3, if the capacity of the delay packet obtained by step S2 is less than Second Threshold and is greater than first threshold, then the normal playback speed that speed equals to preset is play in adjustment.
Further, the normal playback speed preset in this net cast method and the capacity of screen buffer are determined according to parameters such as the internal memory of playback equipment, the video playing quality of user's request and local network bandwidth.
Further, be detained in this net cast method packet size according to entering data in buffering area, take out the difference of data and determine.
Net cast method of the present invention, by detecting the packet size of being detained in screen buffer in real time, judges whether the downstream rate of current data packet meets the needs of current broadcasting speed.Be detained data packet number if detect suitable, then show that the downstream rate of network data is mated with the video playout speed of local side playback equipment, user can watching video live broadcast glibly; Be detained data packet number if detect inappropriate, then show that the downstream rate of network data is not mated with the video playout speed of local side playback equipment, if initiatively do not take other measure, then user's watching video live broadcast will go out Caton phenomenon.By adjusting the video playout speed of local side playback equipment in time, change the amount of taking out data from buffering area, thus control delay data packet number remains on suitable quantity, ensures that user can whole process watching video live broadcast glibly.Therefore, the present invention by reducing the negative effect of network jitter to video playback viewing experience at the broadcasting speed of local player end dynamic conditioning this locality, thus promotes user experience.
Second aspect, the net cast device that the present invention proposes comprises: receiver module, real time capacity detection module and broadcasting speed adjusting module.Wherein, receiver module is for receiver, video and by video storage at screen buffer; Real time capacity detection module, for detecting the capacity of current delay packet in buffering area in real time; Broadcasting speed adjusting module, for the capacity of current delay packet and the capacity threshold pre-set are compared, according to comparative result, the current broadcasting speed of adjustment video.
Further, the capacity threshold that this net cast device relates to comprises first threshold, and the speed adjusting module of this net cast device comprises the first broadcast unit.If the capacity of the current delay packet obtained by real time capacity detection module is less than first threshold, then controls current broadcasting speed and be less than the normal playback speed preset.
Further, the first threshold that this net cast device relates to is determined in the following way: make first threshold be B, and the capacity of screen buffer is A, then: B=A/2-A* (5% ~ 10%).
Further, the capacity threshold that this net cast device relates to comprises Second Threshold, and the speed adjusting module of this net cast device comprises the second broadcast unit.If the capacity of the current delay packet obtained by real time capacity detection module is greater than Second Threshold, then controls current broadcasting speed and be greater than the normal playback speed preset.
Further, the Second Threshold that this net cast device relates to is determined in the following way: make Second Threshold be C, and the capacity of screen buffer is A, then: C=A/2+A* (5% ~ 10%).
Further, the speed adjusting module of this net cast device also comprises the 3rd broadcast unit.If the capacity of the delay packet obtained by real time capacity detection module is less than Second Threshold and is greater than first threshold, then control the current normal playback speed play speed and equal to preset.
Further, the normal playback speed of this net cast device and the capacity of screen buffer are determined according to parameters such as the internal memory of playback equipment, the video playing quality of user's request and local network bandwidth.
Further, the delay packet size that relates to of this net cast device according to entering data in buffering area, take out the difference of data and determine.
The real time capacity detection module of net cast device of the present invention, by detecting the packet size of being detained in screen buffer in real time, judges whether the downstream rate of current data packet meets the needs of current broadcasting speed.Be detained data packet number if detect suitable, then show that the downstream rate of network data is mated with the video playout speed of local side playback equipment, then broadcasting speed adjusting module keeps current broadcasting speed, and user can watching video live broadcast glibly; If real time capacity detection module detects delay, data packet number is inappropriate, then show that the downstream rate of network data is not mated with the video playout speed of local side playback equipment, if initiatively do not take other measure, then user's watching video live broadcast will go out Caton phenomenon.The broadcasting speed adjusting module of this net cast device is by adjusting the video playout speed of local side playback equipment in time, change the amount of taking out data from buffering area, thus control delay data packet number remains on suitable quantity, ensures that user can whole process watching video live broadcast glibly.Therefore, net cast device of the present invention by reducing the negative effect of network jitter to video playback viewing experience at the broadcasting speed of local player end dynamic conditioning this locality, thus promotes user experience.
Accompanying drawing illustrates:
Fig. 1 is the flow chart of net cast embodiment of the method for the present invention;
Fig. 2 is the flow chart of net cast embodiment of the method for the present invention adjustment broadcasting speed.
Embodiment:
Further illustrate the present invention below by specific embodiment, but should be understood to, these inventions are only used for the use specifically described more in detail, and should not be construed as limiting the present invention in any form.
Fig. 1, Fig. 2 are the flow charts illustrating net cast embodiment of the method for the present invention.As shown in Figure 1, the embodiment of net cast method of the present invention comprises the steps: step S1, and receiver, video is also stored in screen buffer; Step S2, detects the capacity of current data packet in described buffering area in real time; Step S3, compares the capacity of current data packet and the capacity threshold pre-set, if be less than described first threshold by the capacity of the current data packet of described step S2 acquisition, then adjust described current broadcasting speed and is less than the normal playback speed preset; If the capacity of the current data packet obtained by described step S2 is greater than described Second Threshold, then: adjust described current broadcasting speed and be greater than the normal playback speed preset.
Make first threshold be B, the capacity of described screen buffer is A, then:
B＝A/2-A*(5％～10％)。Make described Second Threshold be C, then:
C＝A/2+A*(5％～10％)。
The normal playback speed preset is determined according to following parameter: the internal memory of playback equipment, the video playing quality of user's request and local network bandwidth.
Net cast method of the present invention, by detecting the packet size of being detained in screen buffer in real time, judges whether the downstream rate of current data packet meets the needs of current broadcasting speed.Be detained data packet number if detect suitable, then show that the downstream rate of network data is mated with the video playout speed of local side playback equipment, user can watching video live broadcast glibly; Be detained data packet number if detect inappropriate, then show that the downstream rate of network data is not mated with the video playout speed of local side playback equipment, if initiatively do not take other measure, then user's watching video live broadcast will go out Caton phenomenon.By adjusting the video playout speed of local side playback equipment in time, change the amount of taking out data from buffering area, thus control delay data packet number remains on suitable quantity, ensures that user can whole process watching video live broadcast glibly.Therefore, the present invention by reducing the negative effect of network jitter to video playback viewing experience at the broadcasting speed of local player end dynamic conditioning this locality, thus promotes user experience.
Net cast device embodiment of the present invention comprises: receiver module, real time capacity detection module and broadcasting speed adjusting module.Wherein, receiver module is for receiver, video and by video storage at screen buffer; Real time capacity detection module, for detecting the capacity of current delay packet in buffering area in real time; Broadcasting speed adjusting module, for the capacity of current delay packet and the capacity threshold pre-set are compared, according to comparative result, the current broadcasting speed of adjustment video.
The capacity threshold that this net cast device relates to comprises first threshold, and the speed adjusting module of this net cast device comprises the first broadcast unit.If the capacity of the current delay packet obtained by real time capacity detection module is less than first threshold, then controls current broadcasting speed and be less than the normal playback speed preset.Wherein, first threshold is determined in the following way: make first threshold be B, and the capacity of screen buffer is A, then: B=A/2-A* (5% ~ 10%).
The capacity threshold that this net cast device relates to comprises Second Threshold, and the speed adjusting module of this net cast device comprises the second broadcast unit.If the capacity of the current delay packet obtained by real time capacity detection module is greater than Second Threshold, then controls current broadcasting speed and be greater than the normal playback speed preset.Wherein, Second Threshold is determined in the following way: make Second Threshold be C, and the capacity of screen buffer is A, then: C=A/2+A* (5% ~ 10%).
The speed adjusting module of this net cast device also comprises the 3rd broadcast unit.If the capacity of the delay packet obtained by real time capacity detection module is less than Second Threshold and is greater than first threshold, then control the current normal playback speed play speed and equal to preset.
The normal playback speed of this net cast device and the capacity of screen buffer are determined according to parameters such as the internal memory of playback equipment, the video playing quality of user's request and local network bandwidth.
The delay packet size that this net cast device relates to according to entering data in buffering area, take out the difference of data and determine.
The real time capacity detection module of net cast device of the present invention, by detecting the packet size of being detained in screen buffer in real time, judges whether the downstream rate of current data packet meets the needs of current broadcasting speed.Be detained data packet number if detect suitable, then show that the downstream rate of network data is mated with the video playout speed of local side playback equipment, then broadcasting speed adjusting module keeps current broadcasting speed, and user can watching video live broadcast glibly; If real time capacity detection module detects delay, data packet number is inappropriate, then show that the downstream rate of network data is not mated with the video playout speed of local side playback equipment, if initiatively do not take other measure, then user's watching video live broadcast will go out Caton phenomenon.The broadcasting speed adjusting module of this net cast device is by adjusting the video playout speed of local side playback equipment in time, change the amount of taking out data from buffering area, thus control delay data packet number remains on suitable quantity, ensures that user can whole process watching video live broadcast glibly.Therefore, net cast device of the present invention by reducing the negative effect of network jitter to video playback viewing experience at the broadcasting speed of local player end dynamic conditioning this locality, thus promotes user experience.
Although present invention has been description to a certain degree, significantly, under the condition not departing from the spirit and scope of the present invention, can carry out the suitable change of each condition.Be appreciated that and the invention is not restricted to described embodiment, and be attributed to the scope of claim, it comprises the equivalent replacement of described each factor.
Claims (8)
1. the net cast method under network jitter environment, is characterized in that, comprise the steps:
Step S1, receiver, video is also stored in screen buffer;
Step S2, detects the capacity being detained packet in described buffering area;
Step S3, compares the capacity being detained packet and the capacity threshold pre-set, according to comparative result, and adjustment video playout speed.
2. net cast method according to claim 1, is characterized in that,
In described step S3, described capacity threshold comprises first threshold;
If the capacity of the delay packet obtained by described step S2 is less than described first threshold, then: adjust described broadcasting speed and be less than the normal playback speed preset.
3. net cast method according to claim 2, is characterized in that,
In described step S3, described capacity threshold also comprises Second Threshold;
If the capacity of the delay packet obtained by described step S2 is greater than described Second Threshold, then: adjust described broadcasting speed and be greater than the normal playback speed preset.
4. net cast method according to claim 3, is characterized in that,
In described step S3, if be less than described Second Threshold by the capacity of the delay packet of described step S2 acquisition and be greater than described first threshold, then:
Adjust the described normal playback speed play speed and equal to preset.
5. the net cast method according to claim arbitrary in claim 2 to 4, it is characterized in that, described in the normal playback speed that presets determine according to following parameter: the internal memory of playback equipment, the video playing quality of user's request and local network bandwidth.
6. the net cast method according to claim arbitrary in Claims 1-4, is characterized in that, the capacity of described screen buffer is determined according to following parameter:
The internal memory of playback equipment, the video playing quality of user's request and local network bandwidth.
7. the net cast method according to claim arbitrary in Claims 1-4, is characterized in that, described delay packet size according to entering data in buffering area, take out the difference of data and determine.
8. the net cast device under network jitter environment, is characterized in that, comprising:
Receiver module, for receiver, video and by video storage at screen buffer;
Real time capacity detection module, for detecting the capacity of current delay packet in described buffering area in real time;
Broadcasting speed adjusting module, for the capacity of current delay packet and the capacity threshold pre-set are compared, according to comparative result, the current broadcasting speed of adjustment video.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510716762.6A CN105392023B (en) | 2015-10-29 | 2015-10-29 | A kind of net cast method and device under network jitter environment |
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| CN201510716762.6A CN105392023B (en) | 2015-10-29 | 2015-10-29 | A kind of net cast method and device under network jitter environment |
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| CN107347065A (en) * | 2017-06-29 | 2017-11-14 | 上海鋆创信息技术有限公司 | A kind of data push method and device, a kind of terminal and storage medium |
| CN108810656A (en) * | 2018-06-12 | 2018-11-13 | 深圳国微视安科技有限公司 | A kind of the debounce processing method and processing system of real-time live broadcast TS streams |
| CN108965807A (en) * | 2018-07-17 | 2018-12-07 | 深圳市共进电子股份有限公司 | Control method for playing back, device, terminal and the storage medium of real-time video |
| CN109168083A (en) * | 2018-10-23 | 2019-01-08 | 青岛海信电器股份有限公司 | A kind of Streaming Media real time playing method and device |
| CN110536153A (en) * | 2018-05-23 | 2019-12-03 | 视联动力信息技术股份有限公司 | A kind of playback method and server of video data |
| CN111294634A (en) * | 2020-02-27 | 2020-06-16 | 腾讯科技（深圳）有限公司 | Live broadcast method, device, system, equipment and computer readable storage medium |
| CN112822502A (en) * | 2020-12-28 | 2021-05-18 | 阿里巴巴（中国）有限公司 | Live broadcast jitter removal intelligent caching and live broadcast method, equipment and storage medium |
| CN112911377A (en) * | 2021-02-01 | 2021-06-04 | 华录智达科技股份有限公司 | System and algorithm for adapting video playing and cache |
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| CN105392023B (en) | 2019-04-26 |
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