CN105898388A - Node downloading scheduling method and node downloading scheduling device - Google Patents
Node downloading scheduling method and node downloading scheduling device Download PDFInfo
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- CN105898388A CN105898388A CN201610206227.0A CN201610206227A CN105898388A CN 105898388 A CN105898388 A CN 105898388A CN 201610206227 A CN201610206227 A CN 201610206227A CN 105898388 A CN105898388 A CN 105898388A
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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
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/23805—Controlling the feeding rate to the network, e.g. by controlling the video pump
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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
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2385—Channel allocation; Bandwidth allocation
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Information Transfer Between Computers (AREA)
Abstract
The invention relates to a node downloading scheduling method and a node downloading scheduling device. The method comprises the following steps: setting a sliding window by taking the current playback head of a live stream played by a node as a benchmark, wherein the un-downloaded live stream data in the sliding window is downloaded preferentially from a content distribution network CDN server, and the un-downloaded live stream data after the sliding window is downloaded preferentially from connected neighbor nodes which can provide live stream data in a point-to-point (P2P) data transmission mode; setting screening standards so as to screen out an optimal neighbor node from the connected neighbor nodes which can provide live stream data based on the screening standards, and requesting the optimal neighbor node to download live stream data in a P2P mode; and under the condition that the code rate of live stream changes, adjusting the volume of live stream data which the node requests to download from the CDN server each time, the size of the sliding window and one or more of the screening standards according to the change.
Description
Technical field
The present invention relates to internet video technical field, particularly relate to a kind of node download schedule method and dress
Put.
Background technology
Current each big video website is all being greatly developed live, and widely, user's request is also for the scope of business
More diversified.In live broadcast system, user's viewing experience is the most key factor, " smooth rate " then
It it is the important indicator weighing user's viewing experience.Smooth rate characterizes the fluency play, and it is according to applied field
Scape difference can have different definition.Such as, smooth rate typically can refer to that paid close attention to broadcasting total duration T subtracts
Go period that the ratio of difference and the total duration T blocking total duration Td gained of time (i.e. playing stagnation) occurs.
It is different from demand (telecommunication) service, owing to possessing high real-time and imitating in short-term, live broadcast service generally " meeting
And only can " occur the short time request abruptly increase situation, cause content distributing network (CDN) server surpass
Load and cannot timely respond to so that client (i.e. node) is play " card " phenomenon occurs, causes
Smooth rate declines.
Solve this problem at present and have several scheme.One is for CDN server dilatation, and increased bandwidth is to protect
Card quality.But this scheme would sit idle for substantial amounts of server and bandwidth resources.Such as in live broadcast system
High online number peak value can be the hundreds times of maximum on-line people at ordinary times.But the probability of peak value occurs relatively
Low, use the program to be but required to be live broadcast system and server and the bandwidth meeting peak value is persistently provided.For band
For the video website that wide cost accounting is higher, server that amount of redundancy that this scheme is brought is excessive and
Bandwidth is difficult to undertake equally.
Another kind of scheme is to use Point-to-Point Data Transmission (i.e. P2P) algorithm to bear to alleviate CDN server
Carry, save bandwidth.P2P algorithm, it is simply that in the node watching this programme televised live, selection has certain
The node L1 of upload ability (data providing, or it is referred to as the side of uploading), for other nodes L2, (data connect
Debit, or it is referred to as the side of download) transmit data, ask so that great deal of nodes L2 reduces to CDN server
Data, reduce CDN server load and bandwidth pressure.In other words, in tradition CDN pattern, all joints
Point all directly obtains live data from CDN server, and this scheme uses " CDN+P2P " pattern,
According to the difference of transmission algorithm, node L2 has a certain proportion of data from node L1, as shown in Figure 1.
This " CDN+P2P " pattern is specifically, it is simply that first judge the code check of live TV stream,
In the case of code check is relatively low (such as SD live TV stream, code check about 400～600bps), use P2P pattern (i.e.
Node L2 has a certain proportion of data from node L1), for code check higher in the case of (such as high definition
Or super clear live TV stream, code check about more than 1000bps), use full CDN pattern, as shown in Figure 2.
Such scheme can save the clothes of about 80% at the live lower P2P of the utilization algorithm of the SD that code check is relatively low
Business device and bandwidth cost (live TV stream i.e. having total amount about 80% transmits the most mutually), and effectively
Improve smooth rate.But, owing to P2P algorithm not only saves bandwidth cost relatively for high code check live TV stream
Few, instead result in smooth rate and drastically decline, therefore can only abandon using P2P in high code check live scene
Pattern, and use CDN pattern.Therefore, when the increase of the high-definition live broadcasting frequency or online number sharp increase,
This scheme still can select almost all to download data from CDN server, and original live broadcast system occurs relatively
The problem such as too high for serious bandwidth load, CDN server cannot respond to, affects user equally and normally sees
See.
Summary of the invention
Technical problem
In view of this, the technical problem to be solved in the present invention is, in the case of the code check of live TV stream changes,
Node, how while ensureing live smooth rate, saves CDN server and bandwidth resources.
Solution
On the one hand, it is proposed that a kind of node download schedule method, the method includes: play with node
On the basis of the currently playing head of live TV stream, sliding window is set, wherein, in described sliding window not
Download live TV stream data, preferentially download from content distribution network CDN service device；After this sliding window
Do not download live TV stream data, preferentially with Point-to-Point Data Transmission P2P pattern from that connected, be provided that
The neighbor node of live TV stream data is downloaded；Screening criteria is set, in order to based on this screening criteria from connecting
, the neighbor node being provided that live TV stream data filters out preferred neighbor node, and to described preferred neighbour
Occupy node request and download live TV stream data with P2P pattern；In the case of the code check of live TV stream changes, root
The live TV stream data volume downloaded from CDN server of single request big of this node is adjusted according to described change
One or more in the size of sliding window little, described and described screening criteria.
On the other hand, it is proposed that a kind of node download schedule device, this device includes: sliding window is arranged
Parts, on the basis of the currently playing head of the live TV stream play by node, arrange sliding window, its
In, to not downloading live TV stream data in described sliding window, preferentially take from content distributing network CDN
Business device is downloaded；To not downloading live TV stream data, preferentially with Point-to-Point Data Transmission after this sliding window
P2P pattern from that connected, be provided that live TV stream data neighbor node download；Screening criteria setting unit
Part, is used for arranging screening criteria, in order to based on this screening criteria from that connected, be provided that live fluxion
According to neighbor node in filter out preferred neighbor node, and ask to described preferred neighbor node with P2P mould
Formula downloads live TV stream data；Adjust parts, in the case of changing at the code check of live TV stream, according to institute
State change adjust this node the live TV stream data volume downloaded from CDN server of single request size,
One or more in the size of described sliding window and described screening criteria.
Beneficial effect
The embodiment of the present invention is mixed model based on " CDN+P2P ", but unlike the prior art,
The present embodiment switches between CDN pattern and P2P pattern according to code check the most simply, is not only sharp
The transmission of single low bit-rate live TV stream is carried out by P2P pattern.The present embodiment node is by arranging sliding window
Mouthful, to not downloading live TV stream data in sliding window, preferentially download from CDN server；To sliding window
Do not download live TV stream data after Kou, preferentially download from neighbor node with P2P pattern；Further through setting
Screening criteria filter out preferred neighbor node, in order to preferred neighbor node request with P2P pattern download
Live TV stream data.In the case of the code check of live TV stream changes, adjust the list of this node according to described change
The size of the live TV stream data volume that secondary request is downloaded from CDN server, the adjustment size of sliding window, tune
Whole screening criteria.By above-mentioned technological means, node can utilize CDN and P2P both patterns to transmit
Live TV stream data, and dynamically carry out between CDN pattern and P2P pattern in the case of code check changes
Adjust, while ensure that live smooth rate, be effectively saved CDN server and bandwidth resources.
According to below with reference to the accompanying drawings to detailed description of illustrative embodiments, the further feature of the present invention and side
Face will be clear from.
Accompanying drawing explanation
The accompanying drawing of the part comprising in the description and constituting description together illustrates with description
The exemplary embodiment of the present invention, feature and aspect, and for explaining the principle of the present invention.
Fig. 1 illustrates the schematic diagram of CDN+P2P pattern；
Fig. 2 illustrates the flow chart of live TV stream transmission method in prior art；
Fig. 3 illustrates the flow chart of node download schedule method according to an embodiment of the invention；
Fig. 4 illustrates the schematic diagram of sliding window according to an embodiment of the invention；
Fig. 5 illustrates the structured flowchart of node download schedule device according to an embodiment of the invention；
Fig. 6 illustrates the structured flowchart of another node download schedule device according to an embodiment of the invention；
Fig. 7 shows the structured flowchart of a kind of node download schedule equipment of one embodiment of the invention.
Detailed description of the invention
Various exemplary embodiments, feature and the aspect of the present invention is described in detail below with reference to accompanying drawing.Attached
Reference identical in figure represents the same or analogous element of function.Although enforcement shown in the drawings
The various aspects of example, but unless otherwise indicated, it is not necessary to accompanying drawing drawn to scale.
The most special word " exemplary " means " as example, embodiment or illustrative ".Here as
Any embodiment illustrated by " exemplary " should not necessarily be construed as preferred or advantageous over other embodiments.
It addition, in order to better illustrate the present invention, detailed description of the invention below gives numerous
Detail.It will be appreciated by those skilled in the art that do not have some detail, the present invention is equally
Implement.In some instances, for method well known to those skilled in the art, means, element and circuit
It is not described in detail, in order to highlight the purport of the present invention.
Embodiment 1
Fig. 3 illustrates the flow chart of node download schedule method according to an embodiment of the invention.This embodiment
Can perform at node (client, such as personal computer PC browser).As it is shown on figure 3, the method
Specifically include that
Step 301, on the basis of the currently playing head of the live TV stream play by node, arranges sliding window,
Wherein, to not downloading live TV stream data in described sliding window, preferentially take from content distributing network CDN
Business device is downloaded；To not downloading live TV stream data, preferentially with Point-to-Point Data Transmission after this sliding window
P2P pattern from that connected, be provided that live TV stream data neighbor node download；
Step 302, arranges screening criteria, in order to based on this screening criteria from that connected, be provided that straight
Broadcast and the neighbor node of flow data filter out preferred neighbor node, and to described preferred neighbor node request with
P2P pattern downloads live TV stream data；
Step 303, in the case of the code check of live TV stream changes, adjusts this node according to described change
The size of the live TV stream data volume that single request is downloaded from CDN server, the size of described sliding window,
And one or more in described screening criteria.
The embodiment of the present invention is mixed model based on " CDN+P2P ", but unlike the prior art,
The present embodiment switches between CDN pattern and P2P pattern according to code check the most simply, is not only sharp
The transmission of single low bit-rate live TV stream is carried out by P2P pattern.The present embodiment node is by arranging sliding window
Mouthful, to not downloading live TV stream data in sliding window, preferentially download from CDN server；To sliding window
Do not download live TV stream data after Kou, preferentially download from neighbor node with P2P pattern；Further through setting
Screening criteria filter out preferred neighbor node, in order to preferred neighbor node request with P2P pattern download
Live TV stream data.In the case of the code check of live TV stream changes, adjust the list of this node according to described change
The size of the live TV stream data volume that secondary request is downloaded from CDN server, the adjustment size of sliding window, tune
Whole screening criteria.By above-mentioned technological means, node can utilize CDN and P2P both patterns to transmit
Live TV stream data, and dynamically carry out between CDN pattern and P2P pattern in the case of code check changes
Adjust, while ensure that live smooth rate, be effectively saved CDN server and bandwidth resources.
Sliding window is set
Fig. 4 shows the schematic diagram of sliding window according to an embodiment of the invention.
In one example, as shown in Figure 4, can be with the current location of live TV stream that node is play for broadcasting
Putting 41, on the basis of playback head 41, can arrange sliding window 42, wherein, playback head 41 can be with live
Stream playing progress rate and move, sliding window 42 can slide with playback head 41.The window of sliding window 42 is long
Degree can be data volume (such as 20M), it is also possible to for time quantum (such as 120s), in sliding window 42
The live TV stream data 43 downloaded and the live TV stream data 44 do not downloaded can be comprised, in sliding window 42
The live TV stream data 44 do not downloaded preferably are downloaded from CDN server.Data after sliding window 42 can
Comprise the live TV stream data 45 downloaded and the live TV stream data 46 do not downloaded, after sliding window 42
The live TV stream data 46 do not downloaded can preferentially with P2P pattern from that connected, be provided that live TV stream data
Neighbor node is downloaded." neighbor node " mentioned herein, refers to for a node, Ke Yiyu
It sets up those nodes of data communication.
Screening criteria is set
In one example, node can arrange screening criteria, in order to based on this screening criteria from that connected,
It is provided that in the neighbor node of live TV stream data and filters out preferred neighbor node, and save to described preferred neighbours
Point request downloads live TV stream data with P2P pattern；Wherein, described screening criteria can be by neighbor node
Transmission between playback head position, the most data cached length, response time and described node and neighbor node
One or more in performance indications determine.
Hereinafter each screening factor of influence determining screening criteria is illustrated:
1) the playback head position of neighbor node
Such as, if the playback head position of neighbor node is after the playback head of this node, then these neighbours joint
Live TV stream data needed for the most buffered this node of a part in point, therefore can be with " playback head position
After the playback head of this node " it is screening criteria, from neighbor node, filter out preferred neighbor node；
2) the most data cached length of neighbor node
If the most data cached length of neighbor node is the biggest, then the live TV stream data that this neighbor node is provided that
The most, therefore can save from neighbours with " the most data cached length exceedes predetermined threshold " as screening criteria
Point filters out preferred neighbor node；
3) response time of neighbor node
(such as hop count or the network bandwidth are not owing to residing network condition is different for different neighbor nodes
With), the response time of the request that this node sends also is differed, response time is the shortest, then neighbours' joint
The ability that point responds the request that this node sends is the strongest, therefore can be with " response time is less than predetermined threshold "
For screening criteria, from neighbor node, filter out preferred neighbor node；
4) transmission performance indicators between node and neighbor node
This index has reacted the transmission performance between node and neighbor node.Transmission performance indicators such as includes
Packet loss, if packet loss is the highest, then effective live TV stream data that node is downloaded from neighbor node are the fewest.
Therefore, it can with " transmission performance indicators exceed/less than predetermined threshold " as screening criteria, from neighbor node
In filter out preferred neighbor node.
Node can according to live TV stream play practical situation, use in above-mentioned screening factor of influence or
Multiple determine screening criteria, such as, can select the playback head position of neighbor node, the most data cached length
Degree and response time are as the screening criteria of this node.Screening is determined using multiple screening factors of influence
During standard, each screening factor of influence can have different weights as required.
Adjust download schedule
In one example, node can know the code check situation of change of live TV stream, example in several ways
As, if card situation occurs when playing live TV stream in node, node can judge current live stream according to this
Code check improves, and the most such as, node can receive the notice from P2P server, and this notice can comprise
The code check situation of change of current live stream.Node is known the side of the code check situation of change of live TV stream by the present invention
Formula is not restricted.
Uprise with code check from two kinds of situations of high step-down from low with code check below, illustrate various example respectively
The adjustment mode of property.
1. code check uprises from low
In one example, at code check in the case of low uprising, can carry out in following operation or
Multiple: increase live TV stream data volume that the single request of this node downloads from CDN server, increase described
Screening criteria described in sliding window and raising.
For example, at the code check of live TV stream in the case of low uprising, the live TV stream data of node are downloaded
Load can increase, owing to the data block of transmitted per unit time is big, at P2P between node and neighbor node
The most serious message blocking is there is under pattern.Now the main target of knot adjustment is to ensure that live smoothness
Rate.In order to ensure live smooth rate, node can increase the single request of this node and download from CDN server
Live TV stream data volume, such as, the live TV stream data volume that single request is downloaded from CDN server from
30M brings up to 40M, while reducing request number of times, obtains distance from CDN server as early as possible and plays
The live TV stream data volume that head is nearer；Described sliding window can also be increased, such as by the window of sliding window
Length increases to 240s from 120s, to ensure to obtain apart from playback head nearer from CDN server more
Live TV stream data volume；Can also improve screening criteria, such as with higher screening criteria from neighbor node it
In pick out playback head position length posterior, the most data cached big, response time is fast, transmission performance
The preferred neighbor node of index high (such as packet loss is low), and actively ask to preferred neighbor node with P2P
Pattern downloads live TV stream data；Screening mark can be improved by the standard improving each screening factor of influence
Standard, and, it is also possible to (such as in addition to packet loss, it is re-introduced into by mistake by increasing transmission performance indicators
The transmission performance indicators that code check etc. are new) improve screening criteria.
In one example, in the case of the code check of live TV stream changes, node can obtain working as of node
Front state, in one example, the current state of node can include that P2P uploads, P2P downloads and card pauses it
One of.The data providing that wherein P2P uploads during this node of state representation transmits as P2P (is such as schemed
Node L1 in 1), P2P downloads and represents that this node is as data receiver (the such as Fig. 1 in P2P transmission
In node L2), card represent this node currently playing occur card.In one example, node
Current state to be node according to its current transmission mode (such as upload or download), can download data source
(such as node L1 or CDN server), network condition (such as smooth or block) and other nodes
Connection state (such as connect how many neighbor nodes and each neighbor node is the most movable) and broadcasting situation (example
Such as whether card) in one or more determine.
In one example, at code check in the case of low uprising, can in the following manner, for not
With node state be downloaded Dispatching adjustment:
1) upload if the current state of node is P2P, then can reduce this node to neighbor node with P2P
Pattern sends the frequency (also referred to as upload frequencies) of live TV stream data.Code check at live TV stream uprises from low
In the case of, owing to there is the most serious message blocking between node and neighbor node under P2P pattern,
Now, upload frequencies can be reduced in order to reduce message blocking, live with ensure under effective P2P pattern
Stream Data Transmission.
2) download if the current state of node is P2P, then can improve this node and download from CDN server
The ratio of live TV stream data downloaded with P2P pattern from neighbor node relative to this node of live TV stream data
Example, more downloads live TV stream data from CDN server, and/or actively please to the neighbor node specified
Ask and download live TV stream data with P2P pattern.Wherein, the described neighbor node specified can be to improve sieve
The preferred neighbor node filtered out from neighbor node after selecting standard, it is also possible to be that P2P server is specified
Neighbor node (neighbor node specified in received P2P server notice), or both have.
2. code check is from high step-down
In one example, at code check in the case of high step-down, can carry out in following operation or
Multiple: to reduce live TV stream data volume, reduction institute that the single request of this node is downloaded from CDN server
State the screening criteria described in sliding window and reduction.
For example, at the code check of live TV stream in the case of high step-down, the live TV stream data of node are downloaded
Load can alleviate, and now the main target of knot adjustment is saving CDN server bandwidth, recovery more
Data transmission under P2P pattern common between node.To this end, node can be by single request from CDN
The live TV stream data volume that server is downloaded such as is reduced to 30M from 40M；Can also be by the window of sliding window
Mouth length is such as reduced to 120s from 240s；Screening criteria can also be reduced more the most adjacent to filter out
Occupy node, and download live TV stream data to the request of more preferably neighbor node with P2P pattern.
In one example, at code check in the case of high step-down, can in the following manner, for not
With node state be downloaded Dispatching adjustment:
1) upload if the current state of node is P2P, then can improve this node to neighbor node with P2P
Pattern sends the frequency (also referred to as upload frequencies) of live TV stream data；At the code check of live TV stream from high step-down
In the case of, owing between node and neighbor node, the message blocking under P2P pattern has alleviated, this
Time, node can improve upload frequencies, sends more live TV stream data to neighbor node with P2P pattern.
2) download if the current state of node is P2P, then can reduce this node from CDN server
The live TV stream data carried download live TV stream data from described neighbor node with P2P pattern relative to this node
Ratio, more save CDN server bandwidth resources, and/or to described neighbor node ask with P2P
Pattern downloads live TV stream data；This request can be carried out for all kinds of neighbor nodes on a large scale, such as preferably adjacent
Occupy node and other neighbor nodes of live TV stream data can be provided.
3) if the current state of node is card, then can attempt shifting to an earlier date from neighbor node with P2P pattern
The live TV stream data that part after carrying sliding window is not downloaded.Such as, before this, at the code check of live TV stream
Time higher, for live TV stream data close to live head after sliding window, node is to neighbours
Node have issued download request, at the code check of live TV stream in the case of high step-down, due to node and neighbours
Message blocking between node has alleviated, and the data of original request can gradually be transmitted to this node.Therefore,
In order to avoid downloading the live TV stream data of redundancy, node can be attempted downloading in advance after sliding window from broadcasting
Head part live TV stream data farther out.
Adjust data block threshold value
In one example, in the case of the code check of live TV stream changes, also can adjust according to described change
The threshold value of the data block size can transmitted based on P2P pattern single between described node and neighbor node.
For example, the live TV stream data of application layer need the UDP (User Datagram Protocol by transport layer
View) packet carries out between node the data transmission (between source node and destination node), in application layer
In the case of data block is more than the data length (such as 548 byte) in UDP message bag, source node needs
In transport layer, the data block of application layer split, to put in different UPD packets to send
To destination node, the data in UDP are reconfigured after receiving all UDP message bags by destination node,
Generating application layer data block, if it occur that UDP message packet loss, then destination node cannot generate application layer
Data block.Therefore, node can arrange the number that can transmit between neighbor node based on P2P pattern single
According to the threshold value of block size, this threshold value of adjustable, enable the data block size that single transmits with described
Data length in UDP message bag matches, and carries out packet fractionation to reduce in transport layer.
In one example, at code check in the case of low uprising, described node and neighbor node can be reduced
Between the threshold value of data block size that can transmit based on P2P pattern single.
For example, at code check in the case of low uprising, message blocking between node, can be there is, transmission
Packet loss will improve, it is thereby possible to reduce based on P2P pattern single energy between this node and neighbor node
The threshold value of the data block size of enough transmission, such as, be reduced to 512 bytes by threshold value from 1024 bytes, generally
The data length of the UDP of the Internet transmission layer is 548 bytes, and the single that this avoid application layer can
The data block of transmission is split in transport layer, is beneficial between node carry out efficient data under P2P pattern
Transmission.
In one example, at code check in the case of high step-down, increase described node and neighbor node it
Between the threshold value of data block size that can transmit based on P2P pattern single.
For example, at the code check of live TV stream in the case of high step-down, the message blocking between node is
Through alleviating, transmission packet loss will reduce, and therefore, node can increase base between described node and neighbor node
In the threshold value of the data block size that P2P pattern single can transmit, such as, threshold value is increased from 512 bytes
To 1024 bytes, it is beneficial between node carry out efficient data transfer under P2P pattern.
Prevent from deleting neighbor node by mistake
In one example, at the code check of live TV stream in the case of low uprising, node can increase deletion neighbour
Occupy the response time upper limit of the neighbor node that node is based on, to prevent from deleting neighbor node by mistake.For example,
At the code check of live TV stream in the case of low uprising, due between node and neighbor node under P2P pattern
There is the most serious message blocking, after the request that node sends, the response of neighbor node is slack-off, response
Time is elongated.In order to prevent mistake from deleting this part neighbor node, it is possible to increase delete neighbor node and be based on
The response time upper limit of neighbor node, such as increase to 5s from original 3s, so, be equivalent to consider
Change the obstruction that may cause to code check, increase the time waiting neighbor node response, prevent from deleting neighbour by mistake
Occupy node.
Correspondingly, at the code check of live TV stream in the case of high step-down, node can reduce deletion neighbor node
The response time upper limit of the neighbor node being based on, such as, return to upper limits of normal.
Embodiment 2
Fig. 5 illustrates the structured flowchart of node download schedule device 500 according to an embodiment of the invention.This dress
Put and can be built in node.As it is shown in figure 5, this device specifically includes that
Sliding window arranges parts 501, for the currently playing head of live TV stream play with node as base
Standard, arranges sliding window, wherein, to not downloading live TV stream data in described sliding window, preferentially from
Content distribution network CDN service device is downloaded；To not downloading live TV stream data after this sliding window, excellent
First with Point-to-Point Data Transmission P2P pattern from that connected, be provided that the neighbor node of live TV stream data
Carry；
Screening criteria arranges parts 502, is used for arranging screening criteria, in order to based on this screening criteria from
Neighbor node that connect, that be provided that live TV stream data filters out preferred neighbor node, and to described excellent
Neighbor node request is selected to download live TV stream data with P2P pattern；
Adjust parts 503, in the case of changing at the code check of live TV stream, adjust according to described change
The size of the live TV stream data volume that the single request of this node is downloaded from CDN server, described sliding window
Size and described screening criteria in one or more.
The embodiment of the present invention is mixed model based on " CDN+P2P ", but unlike the prior art,
The present embodiment switches between CDN pattern and P2P pattern according to code check the most simply, is not only sharp
The transmission of single low bit-rate live TV stream is carried out by P2P pattern.The device of the present embodiment passes through sliding window
Parts 501 are set sliding window is set, to not downloading live TV stream data, preferentially from CDN in sliding window
Server is downloaded；To not downloading live TV stream data, preferentially with P2P pattern from neighbours after sliding window
Node is downloaded；The screening criteria arranging parts 502 setting further through screening criteria filters out preferred neighbours joint
Point, in order to download live TV stream data with P2P pattern to the request of preferred neighbor node.Code check at live TV stream
In the case of change, adjust parts 503 and adjust the single request of this node from CDN clothes according to described change
The size of the live TV stream data volume that business device is downloaded, the size of adjustment sliding window, adjustment screening criteria.Logical
Crossing above-mentioned technological means, node can utilize CDN and P2P both patterns to transmit live TV stream data, and
Dynamically it is adjusted between CDN pattern and P2P pattern in the case of code check changes, ensure that
While live smooth rate, CDN server and bandwidth resources are effectively saved it.
In one example, as shown in Figure 4, sliding window parts 501 are set can be live with play
The current location of stream is playback head 41, on the basis of playback head 41, can arrange sliding window 42, wherein,
Playback head 41 can move with the playing progress rate of live TV stream, and sliding window 42 can slide with playback head 41.Sliding
The length of window of dynamic window 42 can be data volume (such as 20M), it is also possible to for time quantum (such as 120s),
Sliding window 42 can comprise the live TV stream data 43 downloaded and the live TV stream data 44 do not downloaded, to cunning
The live TV stream data 44 do not downloaded in dynamic window 42 are preferably downloaded from CDN server.Sliding window 42
Data afterwards can comprise the live TV stream data 45 downloaded and the live TV stream data 46 do not downloaded, to slip
The live TV stream data 46 do not downloaded after window 42 can preferentially with P2P pattern from that connected, be provided that
The neighbor node of live TV stream data is downloaded.
In one example, screening criteria arranges parts 502 and can arrange screening criteria, in order to based on this sieve
Select standard from that connected, be provided that the neighbor node of live TV stream data and filter out preferred neighbor node,
And download live TV stream data to the request of described preferred neighbor node with P2P pattern；Wherein, described screening mark
Will definitely with by the playback head position of neighbor node, the most data cached length, response time and described node with
One or more in transmission performance indicators between neighbor node determine.
For determining the explanation of each screening factor of influence of screening criteria, can be found in the description of embodiment 1,
The most no longer repeat.
In one example, node can know the code check situation of change of live TV stream in several ways, tool
Body can be found in the description of embodiment 1, the most no longer repeats.
In one example, at code check in the case of low uprising, adjust parts 503 and can carry out following behaviour
One or more in work: increase the live TV stream data that the single request of this node is downloaded from CDN server
Screening criteria described in measuring, increase described sliding window and improving.
For example, at the code check of live TV stream in the case of low uprising, the live TV stream data of node are downloaded
Load can increase, owing to the data block of transmitted per unit time is big, at P2P between node and neighbor node
The most serious message blocking is there is under pattern.Now the main target of knot adjustment is to ensure that live smoothness
Rate.In order to ensure live smooth rate, adjust parts 503 and can increase the single request of this node from CDN clothes
The live TV stream data volume that business device is downloaded, such as, the live fluxion that single request is downloaded from CDN server
Bring up to 40M according to amount from 30M, reducing while request number of times, as early as possible from CDN server obtain away from
Live TV stream data volume close to playback head；Described sliding window can also be increased, such as by sliding window
Length of window increase to 240s from 120s, with ensure more from CDN server obtain distance playback head
Nearer live TV stream data volume；Screening criteria can also be improved, such as with higher screening criteria from neighbours
Pick out among node playback head position length posterior, the most data cached big, response time is fast, pass
The preferred neighbor node of defeated performance indications high (such as packet loss is low), and actively please to preferred neighbor node
Ask and download live TV stream data with P2P pattern；Can be improved by the standard improving each screening factor of influence
Screening criteria, and, it is also possible to by increase transmission performance indicators (such as in addition to packet loss, then
Introduce the new transmission performance indicators such as the bit error rate) improve screening criteria.
In one example, at code check in the case of high step-down, adjust parts 503 and can carry out following behaviour
One or more in work: reduce the live fluxion that the single request of this node is downloaded from CDN server
According to amount, reduce the screening criteria described in described sliding window and reduction.
For example, at the code check of live TV stream in the case of high step-down, the live TV stream data of node are downloaded
Load can alleviate, and now the main target of knot adjustment is saving CDN server bandwidth, recovery more
Data transmission under P2P pattern common between node.Can be by single request to this end, adjust parts 503
The live TV stream data volume downloaded from CDN server is such as reduced to 30M from 40M；Can also be by sliding window
The length of window of mouth is such as reduced to 120s from 240s；Screening criteria can also be reduced more to filter out
Preferably neighbor node, and download live TV stream data to the request of more preferably neighbor node with P2P pattern.
In one example, in the case of the code check of live TV stream changes, node can obtain working as of node
Front state, in one example, the current state of node can include that P2P uploads, P2P downloads and card pauses it
One of.Description about the state of node can be found in embodiment 1, the most no longer repeats.
Fig. 6 illustrates the structured flowchart of another node download schedule device according to an embodiment of the invention.
In one example, as shown in Figure 6, node download schedule device 500 may also include the first adjustment portion
Part 504, at code check in the case of low uprising, node download schedule device 500 can be by the first adjustment
Parts 504, are downloaded Dispatching adjustment for different node states:
1) upload if the current state of node is P2P, then can reduce this node to neighbor node with P2P
Pattern sends the frequency (also referred to as upload frequencies) of live TV stream data.Code check at live TV stream uprises from low
In the case of, owing to there is the most serious message blocking between node and neighbor node under P2P pattern,
Now, upload frequencies can be reduced in order to reduce message blocking, live with ensure under effective P2P pattern
Stream Data Transmission.
2) download if the current state of node is P2P, then can improve this node and download from CDN server
The ratio of live TV stream data downloaded with P2P pattern from neighbor node relative to this node of live TV stream data
Example, more downloads live TV stream data from CDN server, and/or actively please to the neighbor node specified
Ask and download live TV stream data with P2P pattern.Wherein, the described neighbor node specified can be to improve sieve
The preferred neighbor node filtered out from neighbor node after selecting standard, it is also possible to be that P2P server is specified
Neighbor node (neighbor node specified in received P2P server notice), or both have.
In one example, as shown in Figure 6, node download schedule device 500 may also include the second adjustment portion
Part 505, at code check in the case of high step-down, node download schedule device 500 can be by the second adjustment
Parts 505, are downloaded Dispatching adjustment for different node states:
1) upload if the current state of node is P2P, then can improve this node to neighbor node with P2P
Pattern sends the frequency (also referred to as upload frequencies) of live TV stream data；At the code check of live TV stream from high step-down
In the case of, owing between node and neighbor node, the message blocking under P2P pattern has alleviated, this
Time, node can improve upload frequencies, sends more live TV stream data to neighbor node with P2P pattern.
2) download if the current state of node is P2P, then can reduce this node from CDN server
The live TV stream data carried download live TV stream data from described neighbor node with P2P pattern relative to this node
Ratio, more save CDN server bandwidth resources, and/or to described neighbor node ask with P2P
Pattern downloads live TV stream data；This request can be carried out for all kinds of neighbor nodes on a large scale, such as preferably adjacent
Occupy node and other neighbor nodes of live TV stream data can be provided.
3) if the current state of node is card, then can attempt shifting to an earlier date from neighbor node with P2P pattern
The live TV stream data that part after carrying sliding window is not downloaded.Such as, before this, at the code check of live TV stream
Time higher, for live TV stream data close to live head after sliding window, node is to neighbours
Node have issued download request, at the code check of live TV stream in the case of high step-down, due to node and neighbours
Message blocking between node has alleviated, and the data of original request can gradually be transmitted to this node.Therefore,
In order to avoid downloading the live TV stream data of redundancy, node can be attempted downloading in advance after sliding window from broadcasting
Head part live TV stream data farther out.
In one example, as shown in Figure 6, node download schedule device 500 may also include adjusting thresholds portion
Part 506, in the case of the code check of live TV stream changes, node download schedule device 500 is also by threshold value
Adjust parts 506 to adjust between described node and neighbor node based on P2P pattern single according to described change
The threshold value of the data block size that can transmit.
Live TV stream data for application layer need UDP (UDP) number by transport layer
The description carrying out between node the data transmission (between source node and destination node) according to bag can be found in enforcement
Example 1, herein for concisely, no longer repeats.Adjusting thresholds parts 506 can arrange base between neighbor node
In the threshold value of the data block size that P2P pattern single can transmit, this threshold value of adjustable, enable single
The data block size of transmission matches with the data length in described UDP message bag, to reduce in transmission
Layer carries out packet fractionation.
In one example, at code check in the case of low uprising, adjusting thresholds parts 506 can reduce institute
State the threshold value of the data block size can transmitted between node and neighbor node based on P2P pattern single.
For example, at code check in the case of low uprising, message blocking between node, can be there is, transmission
Packet loss will improve, and therefore, adjusting thresholds parts 506 can reduce base between this node and neighbor node
In the threshold value of the data block size that P2P pattern single can transmit, such as, threshold value is reduced from 1024 bytes
To 512 bytes, the data length of the UDP of usual the Internet transmission layer is 548 bytes, and this avoid should
The data block can transmitted with the single of layer is split in transport layer, is beneficial between node in P2P pattern
Under carry out efficient data transfer.
In one example, at code check in the case of high step-down, adjusting thresholds parts 506 increase described
The threshold value of the data block size can transmitted based on P2P pattern single between node and neighbor node.
For example, at the code check of live TV stream in the case of high step-down, the message blocking between node is
Through alleviating, transmission packet loss will reduce, and therefore, adjusting thresholds parts 506 can increase described node with adjacent
Occupy the threshold value of the data block size can transmitted between node based on P2P pattern single, such as by threshold value from
512 bytes increase to 1024 bytes, are beneficial between node carry out efficient data transfer under P2P pattern.
In one example, as shown in Figure 6, node download schedule device 500 may also include response time tune
Integeral part 507, at the code check of live TV stream in the case of low uprising, node download schedule device 500 can lead to
Cross response time to adjust on the response time of the neighbor node that parts 507 increase deletion neighbor node is based on
Limit, to prevent from deleting neighbor node by mistake.For example, at the code check of live TV stream in the case of low uprising,
Owing to there is the most serious message blocking between node and neighbor node under P2P pattern, node sends
Request after, the response of neighbor node is slack-off, and response time is elongated.In order to prevent mistake from deleting this part
Neighbor node, response time adjusts parts 507 and can increase and delete the neighbor node that is based on of neighbor node
The response time upper limit, such as, increase to 5s from original 3s, and so, being equivalent to can in view of code check change
The obstruction that can cause, increases the time waiting neighbor node response, prevents from deleting neighbor node by mistake.
Correspondingly, at the code check of live TV stream in the case of high step-down, response time adjusts parts 507 can
Reduce the response time upper limit deleting the neighbor node that neighbor node is based on, such as, return on normal
Limit.
Embodiment 3
Fig. 7 shows the structured flowchart of a kind of node download schedule equipment of one embodiment of the invention.Institute
Stating node download schedule equipment 1100 can be to possess the host server of computing capability, personal computer
PC or portable portable computer or terminal etc..The specific embodiment of the invention is to calculating joint
Implementing of point limits.
Described node download schedule equipment 1100 includes processor (processor) 1110, communication interface
(Communications Interface) 1120, memorizer (memory) 1130 and bus 1140.Wherein, place
Reason device 1110, communication interface 1120 and memorizer 1130 complete mutual communication by bus 1140.
Communication interface 1120 is used for and network device communications, and wherein the network equipment includes such as Virtual Machine Manager
Center, shared storage etc..
Processor 1110 is used for performing program.Processor 1110 is probably a central processor CPU, or
Person is application-specific integrated circuit ASIC (Application Specific Integrated Circuit), or quilt
It is configured to implement one or more integrated circuits of the embodiment of the present invention.
Memorizer 1130 is used for depositing file.Memorizer 1130 may comprise high-speed RAM memorizer, it is possible to
Can also include nonvolatile memory (non-volatile memory), for example, at least one disk memory.
Memorizer 1130 can also be memory array.Memorizer 1130 is also possible to by piecemeal, and described piece can
By certain rule sets synthesis virtual volume.
In a kind of possible embodiment, said procedure can be the program generation including computer-managed instruction
Code.This program is particularly used in each step performed in embodiment 1.
Those of ordinary skill in the art are it is to be appreciated that each exemplary list in embodiment described herein
Unit and algorithm steps, it is possible to being implemented in combination in of electronic hardware or computer software and electronic hardware.
These functions realize with hardware or software form actually, depend on the application-specific of technical scheme and set
Meter constraints.Professional and technical personnel can select different methods to realize being retouched for specific application
The function stated, but this realization is it is not considered that beyond the scope of this invention.
If realizing described function using the form of computer software and as independent production marketing or make
Used time, the most to a certain extent it is believed that technical scheme all or part of (such as to existing
The part that technology contributes) embody in form of a computer software product.This computer software produces
Product are generally stored inside in the non-volatile memory medium of embodied on computer readable, including some instruction with so that
It is each that computer equipment (can be personal computer, server or the network equipment etc.) performs the present invention
All or part of step of embodiment method.And aforesaid storage medium includes USB flash disk, portable hard drive, only
Read memorizer (ROM, Read-Only Memory), random access memory (RAM, Random
Access Memory), the various media that can store program code such as magnetic disc or CD.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited to
In this, any those familiar with the art, can be easily in the technical scope that the invention discloses
Expect change or replace, all should contain within protection scope of the present invention.Therefore, the protection of the present invention
Scope should be as the criterion with described scope of the claims.
Claims (24)
1. a node download schedule method, the method includes:
On the basis of the currently playing head of the live TV stream play by node, sliding window is set, wherein, right
Live TV stream data are not downloaded, preferentially from content distribution network CDN service device in described sliding window
Carry；To not downloading live TV stream data, preferentially with Point-to-Point Data Transmission P2P mould after this sliding window
Formula from that connected, be provided that live TV stream data neighbor node download；
Screening criteria is set, in order to based on this screening criteria from that connected, be provided that live TV stream data
Neighbor node filters out preferred neighbor node, and asks with under P2P pattern to described preferred neighbor node
Carry live TV stream data；
Live TV stream code check change in the case of, according to described change adjust this node single request from
The size of live TV stream data volume, the size of described sliding window and the described sieve that CDN server is downloaded
That selects in standard is one or more.
Node download schedule method the most according to claim 1, described method also includes:
In the case of the code check of live TV stream changes, adjust described node and neighbor node according to described change
Between the threshold value of data block size that can transmit based on P2P pattern single.
Node download schedule method the most according to claim 1, wherein, described screening criteria is by neighbour
Occupy the playback head position of node, the most data cached length, response time and described node and neighbor node it
Between transmission performance indicators in one or more determine.
Node download schedule method the most according to claim 1, wherein, adjusts according to described change
The size of the live TV stream data volume that the single request of this node is downloaded from CDN server, described sliding window
Size and described screening criteria in one or more, including:
At code check in the case of low uprising, carry out in following operation is one or more: increase this node
Single request download from CDN server live TV stream data volume, increase described sliding window, Yi Jiti
Screening criteria described in height.
Node download schedule method the most according to claim 4, also includes:
At code check in the case of low uprising:
Upload if the current state of node is P2P, then reduce this node and send out with P2P pattern to neighbor node
Send the frequency of live TV stream data；
If the current state of node be P2P download, then improve this node from CDN server download straight
Broadcast the ratio of the live TV stream data that flow data is downloaded with P2P pattern from neighbor node relative to this node, and
/ or actively download live TV stream data to the neighbor node request specified with P2P pattern.
Node download schedule method the most according to claim 5, wherein, the described neighbours' joint specified
Point includes the neighbor node that described preferred neighbor node and/or P2P server are specified.
Node download schedule method the most according to claim 2, wherein, adjusts according to described change
The threshold value of the data block size can transmitted based on P2P pattern single between described node and neighbor node,
Including:
At code check in the case of low uprising, reduce between described node and neighbor node based on P2P pattern
The threshold value of the data block size that single can transmit.
Node download schedule method the most according to claim 1, also includes:
At code check in the case of low uprising, increase the response deleting the neighbor node that neighbor node is based on
Time upper limit.
Node download schedule method the most according to claim 1, wherein, adjusts according to described change
The size of the live TV stream data volume that the single request of this node is downloaded from CDN server, described sliding window
Mouthful size and described screening criteria in one or more, including:
At code check in the case of high step-down, carry out in following operation is one or more: reduce this node
Single request download from CDN server live TV stream data volume, reduce described sliding window and fall
Low described screening criteria.
Node download schedule method the most according to claim 9, also includes:
At code check in the case of high step-down:
Upload if the current state of node is P2P, then improve this node and send out with P2P pattern to neighbor node
Send the frequency of live TV stream data；
If the current state of node be P2P download, then reduce this node from CDN server download straight
Broadcast the ratio of the live TV stream data that flow data is downloaded with P2P pattern from described neighbor node relative to this node
Example, and/or download live TV stream data to neighbor node request with P2P pattern；
If the current state of node is card, it tries download institute with P2P pattern in advance from neighbor node
The live TV stream data that part after stating sliding window is not downloaded.
11. node download schedule methods according to claim 2, wherein, adjust according to described change
The threshold of the data block size can transmitted based on P2P pattern single between whole described node and neighbor node
Value, including:
At code check in the case of high step-down, increase between described node and neighbor node based on P2P pattern
The threshold value of the data block size that single can transmit.
12. node download schedule methods according to claim 1, also include:
At code check in the case of high step-down, reduce the response deleting the neighbor node that neighbor node is based on
Time upper limit.
13. 1 kinds of node download schedule devices, this device includes:
Sliding window arranges parts, on the basis of the currently playing head of the live TV stream play by node,
Sliding window is set, wherein, to not downloading live TV stream data, preferentially from content in described sliding window
Distribution network CDN server is downloaded；To not downloading live TV stream data after this sliding window, preferentially with
Point-to-Point Data Transmission P2P pattern from that connected, be provided that live TV stream data neighbor node download；
Screening criteria arranges parts, is used for arranging screening criteria, in order to based on this screening criteria from connecting
, the neighbor node being provided that live TV stream data filters out preferred neighbor node, and to described preferred neighbour
Occupy node request and download live TV stream data with P2P pattern；
Adjust parts, in the case of changing at the code check of live TV stream, adjust this joint according to described change
Point single request download from CDN server the size of live TV stream data volume, described sliding window big
One or more in little and described screening criteria.
14. node download schedule devices according to claim 13, this device also includes:
Adjusting thresholds parts, in the case of changing at the code check of live TV stream, adjust according to described change
The threshold value of the data block size can transmitted based on P2P pattern single between described node and neighbor node.
15. node download schedule devices according to claim 13, wherein, described screening criteria by
The playback head position of neighbor node, the most data cached length, response time and described node and neighbor node
Between transmission performance indicators in one or more determine.
16. node download schedule devices according to claim 13, wherein, adjust according to described change
The size of the live TV stream data volume that the single request of this node whole is downloaded from CDN server, described sliding window
Mouthful size and described screening criteria in one or more, including:
At code check in the case of low uprising, carry out in following operation is one or more: increase this node
Single request download from CDN server live TV stream data volume, increase described sliding window, Yi Jiti
Screening criteria described in height.
17. node download schedule devices according to claim 16, this device also includes: based on joint
Point current state first adjustment parts, at code check in the case of low uprising: if node work as
Front state is that P2P uploads, then reduce this node and send the frequency of live TV stream data to neighbor node with P2P pattern
Rate；If the current state of node be P2P download, then improve this node from CDN server download straight
Broadcast the ratio of the live TV stream data that flow data is downloaded with P2P pattern from neighbor node relative to this node, and/
Or actively download live TV stream data to the neighbor node request specified with P2P pattern.
18. node download schedule devices according to claim 17, wherein, the described neighbours specified
Node includes the neighbor node that described preferred neighbor node and/or P2P server are specified.
19. node download schedule devices according to claim 14, wherein, adjust according to described change
The threshold of the data block size can transmitted based on P2P pattern single between whole described node and neighbor node
Value, including:
At code check in the case of low uprising, reduce between described node and neighbor node based on P2P pattern
The threshold value of the data block size that single can transmit.
20. node download schedule devices according to claim 13, this device also includes:
Response time adjusts parts, is used for, at code check in the case of low uprising, increasing and deleting neighbor node
The response time upper limit of the neighbor node being based on.
21. node download schedule devices according to claim 13, wherein, adjust according to described change
The size of the live TV stream data volume that the single request of this node whole is downloaded from CDN server, described slip
One or more in the size of window and described screening criteria, including:
At code check in the case of high step-down, carry out in following operation is one or more: reduce this node
Single request download from CDN server live TV stream data volume, reduce described sliding window and fall
Low described screening criteria.
22. node download schedule devices according to claim 21, this device also includes: based on joint
Point current state second adjustment parts, at code check in the case of high step-down: if node work as
Front state is that P2P uploads, then improve this node and send the frequency of live TV stream data to neighbor node with P2P pattern
Rate；If the current state of node be P2P download, then reduce this node from CDN server download straight
Broadcast the ratio of the live TV stream data that flow data is downloaded with P2P pattern from described neighbor node relative to this node
Example, and/or download live TV stream data to neighbor node request with P2P pattern；If the current state of node
For card, it tries download the part after described sliding window not with P2P pattern in advance from neighbor node
The live TV stream data downloaded.
23. node download schedule devices according to claim 14, wherein, adjust according to described change
The threshold of the data block size can transmitted based on P2P pattern single between whole described node and neighbor node
Value, including:
At code check in the case of high step-down, increase between described node and neighbor node based on P2P pattern
The threshold value of the data block size that single can transmit.
24. node download schedule devices according to claim 13, this device also includes:
Response time adjusts parts, is used for, at code check in the case of high step-down, reducing and deleting neighbor node
The response time upper limit of the neighbor node being based on.
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| CN108174286A (en) * | 2017-12-27 | 2018-06-15 | 北京奇艺世纪科技有限公司 | A kind of processing method and processing device of video code flow |
| CN109819336A (en) * | 2019-01-31 | 2019-05-28 | 湖南快乐阳光互动娱乐传媒有限公司 | Method and system for downloading fragments based on size of play cache |
| CN109819336B (en) * | 2019-01-31 | 2020-12-04 | 湖南快乐阳光互动娱乐传媒有限公司 | Method and system for downloading fragments based on size of play cache |
| CN111556324A (en) * | 2020-04-04 | 2020-08-18 | 网宿科技股份有限公司 | Video live broadcast method, device, equipment and system |
| CN111556344A (en) * | 2020-04-04 | 2020-08-18 | 网宿科技股份有限公司 | Method, device, equipment and system for downloading video stream |
| CN111556324B (en) * | 2020-04-04 | 2022-05-10 | 网宿科技股份有限公司 | Video live broadcast method, device, equipment and system |
| CN111479123A (en) * | 2020-04-20 | 2020-07-31 | 玉环智寻信息技术有限公司 | Method and device for acquiring media stream resources and mobile terminal |
| CN112954406A (en) * | 2021-05-17 | 2021-06-11 | 腾讯科技（深圳）有限公司 | Data downloading method and device, computer equipment and storage medium |
| CN112954406B (en) * | 2021-05-17 | 2021-07-30 | 腾讯科技（深圳）有限公司 | Data downloading method and device, computer equipment and storage medium |
| CN116320507A (en) * | 2023-05-26 | 2023-06-23 | 湖南快乐阳光互动娱乐传媒有限公司 | Video data downloading method and device |
| CN116320507B (en) * | 2023-05-26 | 2023-08-08 | 湖南快乐阳光互动娱乐传媒有限公司 | Video data downloading method and device |
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