CN108111531A - A kind of method and device for enhancing net cast quality - Google Patents
A kind of method and device for enhancing net cast quality Download PDFInfo
- Publication number
- CN108111531A CN108111531A CN201810001580.4A CN201810001580A CN108111531A CN 108111531 A CN108111531 A CN 108111531A CN 201810001580 A CN201810001580 A CN 201810001580A CN 108111531 A CN108111531 A CN 108111531A
- Authority
- CN
- China
- Prior art keywords
- bag
- benefit
- packet
- live
- client
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/80—Responding to QoS
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a kind of method and devices for enhancing net cast quality, this method includes live data bag of the benefit bag client in the delay buffer for mending bag client is determined, and there are during packet loss, live streaming benefit bag request is sent to packet server is mended with unicast fashion, bag request is mended in live streaming includes the sequence number for the data packet lost, wherein, when the Radio Link effective supply band of live streaming is wider than first threshold, the delay buffer for mending bag client is more than second threshold and less than the 3rd threshold value, it receives and mends the data packet reissued that packet server is sent, it is timestamp by the Sequence number maps for the data packet reissued, the data packet reissued according to timestamp to player transmission, so that the player delay plays video.Due to storing live data bag by delay buffer, and data packet is reissued to packet server request is mended by mending bag client, player can also improve the play quality of video while delay plays video, improve fluency.
Description
Technical field
The present embodiments relate to technical field of rail traffic more particularly to it is a kind of enhance net cast quality method and
Device.
Background technology
Unstable network state refers to the network for service communication, and there are bandwidth variation acutely, network off and on, is lost
The features such as bag rate is higher, and network delay variation is violent.Backbone network is usually not in unstable network state, and relatively common goes out
Existing unstable network state is wireless network.Typically, such as the vehicle-ground wireless communication of the subway train under high speed roaming state
Network.
The fluency of net cast in this state, if without extra process, success rate and effect can all give a discount greatly
Phenomena such as detaining, for example being present with mosaic and interim card in net cast.
Therefore there is an urgent need for a kind of method that can enhance net cast effect, to improve the fluency of net cast.
The content of the invention
The embodiment of the present invention provides a kind of method and device for enhancing net cast quality, to solve unstable network-like
Under state, the problem of how making rational planning for using resource, ensure the fluency of net cast.
A kind of method for enhancing net cast quality provided in an embodiment of the present invention, including：
Live data bag of the bag client in the delay buffer for mending bag client is determined is mended there are during packet loss, with list
It broadcasts form and wraps request to packet server transmission live streaming benefit is mended, it is described that the sequence for mending and wrapping and asking to include the data packet lost is broadcast live
Number；Wherein, when the Radio Link effective supply band of live streaming is wider than first threshold, the delay buffer of the benefit bag client is big
In second threshold and less than the 3rd threshold value；
The bag client of mending receives the data packet reissued mended packet server and sent；
The Sequence number maps of the data packet reissued are timestamp by the benefit bag client；
The bag client of mending is according to the data packet reissued described in the timestamp to player transmission.
Optionally, the live data bag for mending bag client in the delay buffer for mending bag client is determined exists
Before packet loss, further include：
The bag client of mending receives the live data bag that live source is sent in the form of multicast；
The live data bag is stored in the delay buffer of the benefit bag client by the bag client of mending.
Optionally, the method further includes：
The reference clock message mended bag client and receive live source periodicity sending；
It is described mend bag client according to the timestamp to player send described in the data packet reissued, including：
The benefit bag client according to the reference clock message and the sequence number of the data packet reissued to it is described when
Between stab and be corrected；
The client of reissuing is according to the data packet reissued described in the timestamp after correction to player transmission.
Optionally, the first threshold needs coincidence formula (1), and the second threshold needs coincidence formula (2), and described
Three threshold values need coincidence formula (3)；
The formula (1) is：
Wherein, A1For first threshold, C is live data flow, and d is the average packet loss ratio of Radio Link；
The formula (2) is：
Wherein, A2For second threshold, T is from packet server is mended to once effective request response time of part client
Every C is live data flow, and d is the average packet loss ratio of Radio Link；
The formula (3) is：
Wherein, A3For the 3rd threshold value, C is live data flow.
Correspondingly, the embodiment of the present invention additionally provides a kind of method for enhancing net cast quality, including：
It mends packet server and obtains the live streaming benefit bag request for mending the transmission of bag client；Bag request is mended in the live streaming to be included losing
Data packet sequence number；
The delay buffer that packet server is mended according to the sequence number of the data packet of the loss from the benefit packet server
In determine the data packet reissued；
The data packet reissued is sent to the benefit bag client by the benefit packet server.
Optionally, the packet server of mending further includes before obtaining the live streaming for mending the transmission of bag client and mending bag request：
The packet server of mending receives the live data bag that live source is sent in the form of multicast；
The live data bag is stored in the delay buffer of the benefit packet server by the packet server of mending.
Optionally, the sequence number for mending packet server in data packet according to the loss is from the benefit packet server
Before the data packet reissued is determined in delay buffer, further include：
The benefit packet server determines whether received in setting time according to the sequence number of the data packet of the loss
Bag request is mended in the identical live streaming that bag client is sent of mending；
Bag request is mended if so, mending packet server and abandoning the live streaming.
Optionally, it is described to mend sequence number prolonging from the benefit packet server of the packet server according to the data packet of the loss
When caching in determine the data packet reissued, including：
The packet server of mending wraps visitor when bag request is mended in the live streamings for obtaining multiple benefit bag clients according to the multiple mend
Unstable network where the end of family is grouped the multiple benefit bag client；
The benefit packet server distributes resource according to grouping, and bag is mended in the live streaming of the benefit bag client in each grouping please
It asks and determines the data packet reissued corresponding with the live streaming benefit bag request according to Token Bucket Policing；
Wherein, the corresponding token bucket of each grouping often determines that the live streaming of a benefit bag client is mended bag request and corresponded to
The data packet reissued consumes the token in a token bucket.
Optionally, the method further includes：
The reference clock message mended packet server and receive live source periodicity sending.
Correspondingly, the embodiment of the present invention additionally provides a kind of device for enhancing net cast quality, including：
Transmit-Receive Unit, for the live data bag in the delay buffer for mending bag client is determined there are during packet loss,
Request is wrapped to packet server transmission live streaming benefit is mended with unicast fashion, it is described that the sequence for mending and wrapping and asking to include the data packet lost is broadcast live
Row number；Wherein, when the Radio Link effective supply band of live streaming is wider than first threshold, the delay buffer for mending bag client
More than second threshold and less than the 3rd threshold value；And receive the data packet reissued mended packet server and sent；
Processing unit, for being timestamp by the Sequence number maps of the data packet reissued；
The Transmit-Receive Unit is additionally operable to according to the data packet reissued described in the timestamp to player transmission.
Optionally, live data bag of the processing unit in the delay buffer for mending bag client is determined, which exists, loses
Before bag, it is additionally operable to：
The Transmit-Receive Unit is controlled to receive the live data bag that live source is sent in the form of multicast；
The live data bag is stored in the delay buffer of the benefit bag client.
Optionally, the processing unit is additionally operable to：
The Transmit-Receive Unit is controlled to receive the reference clock message of live source periodicity sending；
When the processing unit is according to the data packet reissued described in the timestamp to player transmission, it is specifically used for：
The timestamp is corrected according to the sequence number of the reference clock message and the data packet reissued；
The Transmit-Receive Unit is controlled according to the data packet reissued described in the timestamp after correction to player transmission.
Optionally, the first threshold needs coincidence formula (1), and the second threshold needs coincidence formula (2), and described
Three threshold values need coincidence formula (3)；
The formula (1) is：
Wherein, A1For first threshold, C is live data flow, and d is the average packet loss ratio of Radio Link；
The formula (2) is：
Wherein, A2For second threshold, T is from packet server is mended to once effective request response time of part client
Every C is live data flow, and d is the average packet loss ratio of Radio Link；
The formula (3) is：
Wherein, A3For the 3rd threshold value, C is live data flow.
Correspondingly, the embodiment of the present invention additionally provides a kind of device for enhancing net cast quality, including：
Transmit-Receive Unit, for obtaining the live streaming benefit bag request mended bag client and sent；Bag request is mended in the live streaming to be included
The sequence number of the data packet of loss；
Processing unit, for the data packet according to the loss sequence number from it is described benefit packet server delay buffer in
Determine the data packet reissued；
The Transmit-Receive Unit is additionally operable to the data packet reissued being sent to the benefit bag client.
Optionally, the processing unit is additionally operable to before obtaining the live streaming for mending the transmission of bag client and mending bag request：
The Transmit-Receive Unit is controlled to receive the live data bag that live source is sent in the form of multicast；
The live data bag is stored in the delay buffer of the benefit packet server.
Optionally, the processing unit is in sequence number the prolonging from the benefit packet server of the data packet according to the loss
When caching in determine the data packet reissued before, be additionally operable to：
Determine identical benefit bag client whether was received in setting time according to the sequence number of the data packet of the loss
Bag request is mended in the live streaming that end is sent；
If so, abandoning the live streaming mends bag request.
Optionally, the processing unit according to the sequence number of the data packet of the loss from the delay of the benefit packet server
When the data packet reissued is determined in caching, it is specifically used for：
When bag request is mended in the live streamings for obtaining multiple benefit bag clients, according to the shakiness where the multiple benefit bag client
Determine network to be grouped the multiple benefit bag client；
Resource is distributed according to grouping, the live streaming of the benefit bag client in each grouping mends bag request according to token bucket machine
System determines the data packet reissued corresponding with the live streaming benefit bag request；
Wherein, the corresponding token bucket of each grouping often determines that the live streaming of a benefit bag client is mended bag request and corresponded to
The data packet reissued consumes the token in a token bucket.
Optionally, the processing unit is additionally operable to：
The Transmit-Receive Unit is controlled to receive the reference clock message of live source periodicity sending.
Correspondingly, the embodiment of the present invention additionally provides a kind of computing device, including：
Memory, for storing program instruction；
For calling the program instruction stored in the memory, above-mentioned enhancing is performed according to the program of acquisition for processor
The method of net cast quality.
Correspondingly, the embodiment of the present invention additionally provides a kind of computer storage media, the computer readable storage medium
Computer executable instructions are stored with, the computer executable instructions are used to that computer to be made to perform above-mentioned enhancing net cast matter
The method of amount.
The embodiment of the present invention shows to mend live data of the bag client in the delay buffer for mending bag client is determined
It wraps there are during packet loss, sending to be broadcast live to mend to wrap to benefit packet server with unicast fashion to ask, the live streaming benefit bag asks to include losing
The sequence number of the data packet of mistake, wherein, it is described to mend bag visitor when the Radio Link effective supply band of live streaming is wider than first threshold
The delay buffer at family end is more than second threshold and less than the 3rd threshold value, receives the data reissued mended packet server and sent
The Sequence number maps of the data packet reissued are timestamp by bag, are reissued according to described in the timestamp to player transmission
Data packet so that the player delay play video.Due to storing live data bag by delay buffer, and pass through benefit
Bag client reissues data packet to packet server request is mended, and player can also improve video while delay plays video
Play quality improves fluency.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly introduced, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, for this
For the those of ordinary skill in field, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of structure diagram of video living transmission system provided in an embodiment of the present invention；
Fig. 2 is a kind of flow diagram of method for enhancing net cast quality provided in an embodiment of the present invention；
Fig. 3 is a kind of structure diagram of device for enhancing net cast quality provided in an embodiment of the present invention；
Fig. 4 is a kind of structure diagram of device for enhancing net cast quality provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical solutions and advantages of the present invention clearer, the present invention is made below in conjunction with attached drawing into
It is described in detail to one step, it is clear that described embodiment is only the implementation of part of the embodiment of the present invention rather than whole
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
All other embodiment, belongs to the scope of protection of the invention.
Fig. 1 illustratively shows the video that the method for the enhancing net cast quality that the embodiment of the present invention improves is applicable in
Live broadcast system, the video living transmission system include live source 101, mend packet server 102, mend bag client 103 and player 104,
Wherein, a benefit bag client 103 can correspond to one or more players 104.
In embodiments of the present invention, live source 101 refer to the equipment that live data streams are generated in video living transmission system.Mend bag
Server 102 and benefit bag client 103 can be software module or perform enhancing video provided in an embodiment of the present invention
The chipsets such as the processor of method of quality are broadcast live.Player 104 refers to be used to receive live source in video living transmission system
Live data streams, decode live video and the equipment played, a video living transmission system usually have multiple players 104.
The delay buffer for specifying duration is equipped in mending packet server 102 and mending bag client 103, in data packet from
The sequence number of band is as index.It caches as circle queue, largest buffered size is the issuable maximum of sequence number, such as 16
Sequence number, corresponding largest buffered size is 65536.
In embodiments of the present invention, delay live is then the duration by deliberately increasing video cache, sacrifices part and is broadcast live
Real-time, to exchange the technology of some other characteristics for.It is all into a logical groups to refer to sender in network transmission for multicast
Recipient carries out the technology of broadcast in group.The technology more saves the bandwidth of backbone network compared with common program request, meeting, thus in video
Application in live broadcast system is more and more extensive.Bag is mended, refers in network transmission process and the data packet lost is transmitted again
Technology.Live source 101 uses multicast, and as basic live broadcasting method, for each live source 101, system is interior only with a group
It broadcasts, to save out backbone network bandwidth, is wrapped for mending.Live source 101, which is selected in open data packet to carry, can form timestamp
Transport layer stream media protocol (such as real-time transport protocol (the Real-time Transport of the opening of the sequence number of mapping
Protocol, RTP)), to ensure the accurate of delay live time.It mends packet server 102 and mends bag client 103 from live streaming
Source 104 obtains live data bag in the form of multicast, and player 104 no longer directly acquires the data packet of live source.Player 104 changes
It is played with the mode of delay live, mends bag 103 video cache as player 104 of client, delay is provided for player 104
Live data afterwards.
Based on foregoing description, Fig. 2 illustratively shows a kind of enhancing net cast quality provided in an embodiment of the present invention
Method flow, the enhancing net cast quality described with mending in a manner of bag client interacts to mend packet server below
Flow.
As shown in Fig. 2, the flow specifically includes：
Step 201, live source sends live data bag to bag client and benefit packet server is mended.
In embodiments of the present invention, live source directly will not send live data bag to player, but number now is broadcast live
It is sent to according to bag and mends bag client, be transmitted to by benefit bag client and broadcast device, live source is to benefit bag visitor in the form of multicast
Family end and benefit packet server send live data bag.
Step 202, mend bag client and send live streaming benefit bag request to packet server is mended.
Mend bag client to mend packet server send live streaming mend bag request before, mend bag client and mend packet server all
The live data bag that live source is sent out in the form of multicast can be received, and the live data bag received is stored in respective
In delay buffer.It is stored in the live data bag mended in packet server to be to be able to carry out benefit bag for benefit bag client, store
Live data bag in bag client is mended be for line-sower provide live video, and can play delay play mesh
's.
Live data bag of the bag client in the delay buffer for determining the benefit bag client is mended there are during packet loss, it can be with
Unicast fashion sends live streaming benefit bag request to packet server is mended, which mends bag and ask the sequence for including the data packet lost
Number, it may also be said to it is the index for the data packet lost.
Delay buffer can periodically be checked by mending bag client, be lacked if the live data bag in discovery delay buffer exists
The sequence number of mistake, to save bandwidth, the benefit bag for sending UDP unicast fashions after can compressing in batches to benefit packet server again is asked.
Optionally, since too long of broadcast time-delay can cause the real-time of video frequency program to be damaged, too short broadcast time-delay meeting
Cause to have little time to mend bag, therefore, when the Radio Link effective supply band of live streaming is wider than first threshold, above-mentioned benefit bag client
Delay buffer be more than second threshold and less than the 3rd threshold value.
Wherein, which needs coincidence formula (1), which needs coincidence formula (2), and the 3rd threshold value needs
Want coincidence formula (3)；
The formula (1) is：
Wherein, A1For first threshold, C is live data flow (unit Mbit/s), and d is the average packet loss of Radio Link
Rate；
The formula (2) is：
Wherein, A2For second threshold, T is from packet server is mended to once effective request response time of part client
Every (unit s), C are live data flow, and d is the average packet loss ratio of Radio Link；
The formula (3) is：
Wherein, A3For the 3rd threshold value, C is live data flow.
For example, it is most-often used in Internet protocol television (Internet Protocol Television, IPTV)
Be media transmission quality index (Media Delivery Index, MDI), which can be described as delay factor (Delay
Factor, DF) and two parameters of media packet loss rate (Media Loss Rate, MLR), IPTV be usually to DF requirements less than
50ms is 0.004 to MLR requirements.
If the live data flow that direct broadcast server generates is C (C<8Mbit/s), the statistical average packet loss of Radio Link
For d (d<10%), from mend packet server to playing controller once effective request response time at intervals of T (unit s), often
A RTP bags average out to 1350Byte=0.0103Mbit, then the Radio Link effective supply bandwidth for specializing in car-ground radio live streaming must
Above-mentioned formula (1) must be more than, and cache-time (unit s, similarly hereinafter) cannot be below above-mentioned formula (2) and not above above-mentioned formula
(3), the MLR number requirement for reaching live streaming effect assessment standard is only possible to, if the hypothesis is invalid, effect, which is broadcast live, to protect
Card.Wherein, second threshold can also be empirically configured, in practical application, can suitably be increased according to site environment.
In live data flow C=6Mbit/s, the statistical average packet loss d=10% of Radio Link, effectively request response
Time interval T=0.5s.
Then Radio Link effective supply bandwidth has to be larger than 7.49Mbit/s；Cache-time must is fulfilled for：4.165s<Caching
Time<112.5s is only possible to the MLR number requirement for reaching live streaming effect assessment standard, and is suitably adjusted according to field condition
To obtain optimum efficiency.
Step 203, mend packet server according to the sequence number of the data packet of loss from the delay buffer of the benefit packet server
Determine the data packet reissued.
Packet server is mended after receiving the live streaming for mending the transmission of bag client and mending bag request, it can be according to the data packet of loss
Sequence number determine to need the data packet reissued from the delay buffer for mending packet server.In order to avoid duplicating the feelings for mending bag
Condition, the sequence number of the data packet according to loss determine to need from the delay buffer for mending packet server the data packet reissued it
Before, mending packet server can determine identical benefit bag whether was received in setting time according to the sequence number of the data packet of loss
Bag request is mended in the live streaming that client is sent, if receiving identical request, live streaming benefit bag can be abandoned by mending packet server
Request without processing, that is, ignores the live streaming and mends bag request.
Packet server is mended after receiving live streaming and mending bag request, can filter that form is illegal or the illegal data in source
Bag, then decompresses.To each sequence number after decompression, if recently a period of time by identical client request mistake,
Then ignore the live streaming and mend bag request, this mechanism is referred to as to cool down.Cooling mechanism is in order to avoid bag meeting volume is mended in meaningless repetition
Consume backbone network resource and the resource of unstable network outside.Cause to repeat have two the reason for mending bag：First, transport layer protocol sheet
Body may repeat to send to mend bag request data package.Second is that network high latency can cause benefit bag data to be late, so as to cause to mend bag visitor
Family end is mistaken for mending bag failure, resends benefit bag request.
Mend packet server the data packet according to the loss sequence number from it is described benefit packet server delay buffer in
When determining the data packet reissued, it is specifically as follows and mends packet server when bag request is mended in the live streamings for obtaining multiple benefit bag clients,
First multiple benefit bag clients are grouped according to the unstable network where multiple benefit bag clients.According still further to grouping distribution money
Source, the live streaming of the benefit bag client in each grouping mend bag request and determine to mend bag request pair with being broadcast live according to Token Bucket Policing
The data packet reissued answered, wherein, each corresponding token bucket of grouping often determines that bag is mended in the live streaming of a benefit bag client
The corresponding data packet reissued of request consumes the token in a token bucket.
For example, mend packet server and divide one by the benefit bag client in each unstable network to mending bag client
Group is grouped.Bag request is mended by grouping distribution resource processing, the process resource equity dispatching between grouping allows each grouping
The use resource of equality.A token bucket there are highest number of tokens limitation is individually set up in each grouping, when often specifying at equal intervals
It is interior to automatically generate the token of specified quantity, until reach highest number of tokens limitation, and the bag of benefit each time being each grouped, it will
The token in oneself token bucket is consumed, if needing to wait for the generation of new token without token in bucket.Token Bucket Policing is to every
A grouping, which is sent, mends the speed of bag data and is limited, the resource of such backbone network can mean allocation, avoid some grouping
Tie up the possibility of service.Process resource in grouping is allocated by the packet priority principle played at first, optimal to obtain
Result of broadcast.
Step 204, the data packet that packet server is reissued to benefit bag client transmission is mended.
Packet server is mended after the data packet for determining to reissue, just sends the data packet reissued to benefit bag client,
So as to complete the benefit bag to the data packet of loss.
Step 205, it is timestamp to mend bag client by the Sequence number maps for the data packet reissued.
Step 206, the data packet that bag client case sub-timestamp is reissued to player transmission is mended.
Bag client is mended after the data packet reissued is received, it is necessary to be the time by the Sequence number maps for the data packet reissued
Stamp, the data packet then reissued according to timestamp to player transmission, has completed video playing.
Wherein, in order to accurately broadcast time-delay video, mapping of the sequence number to timestamp is completed, mends packet server also
Need periodically to mend bag client send reference clock message, mend bag client receive the reference clock message it
Afterwards, timestamp is corrected according to reference clock message and the sequence number of data packet reissued, then reissue client according to
The data packet that timestamp after correction is reissued to player transmission.So as to improve the precision of broadcast time-delay video.
It should be noted that in embodiments of the present invention, clock is a kind of expression for the coordinate system for describing the time, including zero
The definition of point and the definition of chronomere.Clock is divided to two classes：Absolute clock and relative time clock.Absolute clock is called clock on wall,
It is a kind of expression for the coordinate system for describing the time, the definition of definition and chronomere including zero point is description current point in time
(it is usually 1 day 0 January of 0 year Christian era to zero point：The distance between 00).There are two kinds of absolute clock concepts in RTP：Local clock
It is the described absolute clock of the machine, since clock generator precision is not high, there can be the difference with real clock；Reference clock
It is the expression of local clock other machines in a session of the host where the live source in RTP sessions, equally exists low precision
It is different.
Relative time clock is then considered as the lossy compression method form of absolute clock, it is than the precision of local clock and reference clock
Much lower (e.g., according to RTP/AVP standards, MPEG-TS streams are 90000Hz), and no longer with the zero point of real clock as certainly
Oneself zero point (zero point is randomly generated when establishing session by sender), the emphasis of relative time clock are expressing the sequencing of message
Property, the sequence number in RTP bags is a kind of relative time clock.
Due to mend bag client and mend packet server business processing (as judge cache in message it is whether expired) in, it is necessary to
Carry out some time calculating, it is therefore desirable to different coordinate system conversions into same coordinate system, when conveniently local
Clock coordinate system.By from reference clock to relative time clock again to the conversion of local clock, it is easy to generate error, it is prolonged by mistake
Difference accumulation may result in forms erroneous effects to business processing.Therefore need periodically to carry out zero by reference to clock message
Point calibration, so could be by control errors in the reasonable scope.
The intersection point that above-mentioned coordinate system conversion needs to provide between a coordinate system (is actually to be sat in two differences for same o'clock
Mark system expression) and a source coordinate system point to be converted.During calculating, obtain source coordinate system first treats conversion point and intersection point
Distance, then then intersection point is added the time point after can must converting for purpose coordinate system by distance conversion with the distance.
Intersection point can be updated by the reference clock message that live source is sent, in the reference clock message sent
Relative time stamp+reference time stamp, it is necessary to one timestamp for receiving local stabilizing clock during reference clock message of addition record,
Form a triple.Actual intersection point when in use according to current local stabilizing clock, appropriateness add and subtract transition compensating factor with
Make its transition more smooth.
Pass through this set clock mechanisms, you can the phenomenon that solving the time precision that delay plays, being not in playback jitter.
It should be noted that in embodiments of the present invention, player will not directly receive the live streaming number of live source transmission
According to bag, but live data bag is obtained in bag client from mending, the benefit bag for completing the data packet of loss by mending bag client can
Phenomena such as mosaic and interim card occur in the process is being broadcast live to avoid device is broadcast.
Above-described embodiment shows to mend live data bag of the bag client in the delay buffer for mending bag client is determined
There are during packet loss, sending to be broadcast live to mend to wrap to benefit packet server with unicast fashion to ask, the live streaming benefit bag asks to include loss
Data packet sequence number, wherein, when the Radio Link effective supply band of live streaming is wider than first threshold, it is described mend bag client
The delay buffer at end is more than second threshold and the data packet reissued sent less than the 3rd threshold value, the reception benefit packet server,
It is timestamp by the Sequence number maps of the data packet reissued, according to the number reissued described in the timestamp to player transmission
According to bag, so that player delay plays video.Due to storing live data bag by delay buffer, and by mending bag visitor
Data packet is reissued in family end to packet server request is mended, and player can also improve the broadcasting of video while delay plays video
Quality improves fluency.
Based on identical technical concept, Fig. 3 illustratively shows that a kind of enhancing video provided in an embodiment of the present invention is straight
The structure of the device of quality is broadcast, which can be to mend bag client, can also be located at and mend in bag client.
As shown in figure 3, the device specifically includes：
Transmit-Receive Unit 301, for determining to mend the live data bag in the delay buffer of bag client there are during packet loss, with
Unicast fashion wraps request to packet server transmission live streaming benefit is mended, described that the sequence for mending and wrapping and asking to include the data packet lost is broadcast live
Number；Wherein, when the Radio Link effective supply band of live streaming is wider than first threshold, the delay buffer of the benefit bag client is big
In second threshold and less than the 3rd threshold value；And receive the data packet reissued mended packet server and sent；
Processing unit 302, for being timestamp by the Sequence number maps of the data packet reissued；
The Transmit-Receive Unit 301 is additionally operable to according to the data packet reissued described in the timestamp to player transmission.
Optionally, live data bag of the processing unit 302 in the delay buffer for mending bag client is determined is deposited
Before packet loss, it is additionally operable to：
The Transmit-Receive Unit 301 is controlled to receive the live data bag that live source is sent in the form of multicast；
The live data bag is stored in the delay buffer of the benefit bag client.
Optionally, the processing unit 302 is additionally operable to：
The Transmit-Receive Unit 301 is controlled to receive the reference clock message that the benefit packet server is sent；
When the processing unit 302 is according to the data packet reissued described in the timestamp to player transmission, it is specifically used for：
The timestamp is corrected according to the sequence number of the reference clock message and the data packet reissued；
The Transmit-Receive Unit 301 is controlled according to the data packet reissued described in the timestamp after correction to player transmission.
Optionally, the first threshold needs coincidence formula (1), and the second threshold needs coincidence formula (2), and described
Three threshold values need coincidence formula (3)；
The formula (1) is：
Wherein, A1For first threshold, C is live data flow, and d is the average packet loss ratio of Radio Link；
The formula (2) is：
Wherein, A2For second threshold, T is from packet server is mended to once effective request response time of part client
Every C is live data flow, and d is the average packet loss ratio of Radio Link；
The formula (3) is：
Wherein, A3For the 3rd threshold value, C is live data flow.
Based on identical technical concept, Fig. 4 illustratively shows that a kind of enhancing video provided in an embodiment of the present invention is straight
The device of quality is broadcast, which can be to mend packet server, can also be located at and mend in packet server.
As shown in figure 4, the device specifically includes：
Transmit-Receive Unit 401, for obtaining the live streaming benefit bag request mended bag client and sent；The live streaming is mended wraps in bag request
Include the sequence number of the data packet of loss；
Processing unit 402, the delay for sequence number from the benefit packet server of the data packet according to the loss are delayed
The data packet reissued is determined in depositing；
The Transmit-Receive Unit 401 is additionally operable to the data packet reissued being sent to the benefit bag client.
Optionally, the processing unit 402 is additionally operable to before obtaining the live streaming for mending the transmission of bag client and mending bag request：
The Transmit-Receive Unit 401 is controlled to receive the live data bag that live source is sent in the form of multicast；
The live data bag is stored in the delay buffer of the benefit packet server.
Optionally, the processing unit 402 in the sequence number of the data packet according to the loss from the benefit packet server
Delay buffer in determine the data packet reissued before, be additionally operable to：
Determine identical benefit bag client whether was received in setting time according to the sequence number of the data packet of the loss
Bag request is mended in the live streaming that end is sent；
If so, abandoning the live streaming mends bag request.
Optionally, the processing unit 402 according to the sequence number of the data packet of the loss from the benefit packet server
When the data packet reissued is determined in delay buffer, it is specifically used for：
When bag request is mended in the live streamings for obtaining multiple benefit bag clients, according to the shakiness where the multiple benefit bag client
Determine network to be grouped the multiple benefit bag client；
Resource is distributed according to grouping, the live streaming of the benefit bag client in each grouping mends bag request according to token bucket machine
System determines the data packet reissued corresponding with the live streaming benefit bag request；
Wherein, the corresponding token bucket of each grouping often determines that the live streaming of a benefit bag client is mended bag request and corresponded to
The data packet reissued consumes the token in a token bucket.
Optionally, the processing unit 402 is additionally operable to：
The Transmit-Receive Unit 401 is controlled periodically to send reference clock message to the benefit bag client.
Based on identical technical concept, the embodiment of the present invention additionally provides a kind of computing device, including：
Memory, for storing program instruction；
For calling the program instruction stored in the memory, above-mentioned enhancing is performed according to the program of acquisition for processor
The method of net cast quality.
Based on identical technical concept, the embodiment of the present invention additionally provides a kind of computer storage media, the computer
Readable storage medium storing program for executing is stored with computer executable instructions, and the computer executable instructions are used to that computer to be made to perform above-mentioned increasing
The method of strong net cast quality.
The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that it can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
The processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that the instruction performed by computer or the processor of other programmable data processing devices is generated for real
The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction generation being stored in the computer-readable memory includes referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to generate computer implemented processing, so as in computer or
The instruction offer performed on other programmable devices is used to implement in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make these embodiments other change and modification.So appended claims be intended to be construed to include it is excellent
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and scope.In this way, if these modifications and changes of the present invention belongs to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these modification and variations.
Claims (18)
- A kind of 1. method for enhancing net cast quality, which is characterized in that including：Live data bag of the bag client in the delay buffer for mending bag client is determined is mended there are during packet loss, with unicast shape Formula wraps request to packet server transmission live streaming benefit is mended, described that the sequence number for mending and wrapping and asking to include the data packet lost is broadcast live；Its In, when the Radio Link effective supply band of live streaming is wider than first threshold, the delay buffer for mending bag client is more than the Two threshold values and less than the 3rd threshold value；The bag client of mending receives the data packet reissued mended packet server and sent；The Sequence number maps of the data packet reissued are timestamp by the benefit bag client；The bag client of mending is according to the data packet reissued described in the timestamp to player transmission, so that the player prolongs When play video.
- 2. the method as described in claim 1, which is characterized in that the bag client of mending is determining prolonging for the benefit bag client When caching in live data bag there are packet loss before, further include：The bag client of mending receives the live data bag that live source is sent in the form of multicast；The live data bag is stored in the delay buffer of the benefit bag client by the bag client of mending.
- 3. the method as described in claim 1, which is characterized in that the method further includes：The reference clock message mended bag client and receive live source periodicity sending；It is described mend bag client according to the timestamp to player send described in the data packet reissued, including：The benefit bag client is according to the reference clock message and the sequence number of the data packet reissued to the timestamp It is corrected；The client of reissuing is according to the data packet reissued described in the timestamp after correction to player transmission.
- 4. the method as described in claim 1, which is characterized in that the first threshold needs coincidence formula (1), second threshold Value needs coincidence formula (2), and the 3rd threshold value needs coincidence formula (3)；The formula (1) is：<mrow> <msub> <mi>A</mi> <mn>1</mn> </msub> <mo>=</mo> <mi>C</mi> <mo>+</mo> <mfrac> <mrow> <mn>2</mn> <mi>C</mi> <mi>d</mi> </mrow> <msup> <mrow> <mo>(</mo> <mn>1</mn> <mo>-</mo> <mi>d</mi> <mo>)</mo> </mrow> <mn>2</mn> </msup> </mfrac> <mn>...</mn> <mrow> <mo>(</mo> <mn>1</mn> <mo>)</mo> </mrow> </mrow>Wherein, A1For first threshold, C is live data flow, and d is the average packet loss ratio of Radio Link；The formula (2) is：<mrow> <msub> <mi>A</mi> <mn>2</mn> </msub> <mo>=</mo> <msub> <mi>Tlog</mi> <mrow> <mn>2</mn> <mi>d</mi> <mo>-</mo> <msup> <mi>d</mi> <mn>2</mn> </msup> </mrow> </msub> <mfrac> <mn>0.0000059</mn> <mrow> <mi>C</mi> <mi>d</mi> </mrow> </mfrac> <mn>...</mn> <mrow> <mo>(</mo> <mn>2</mn> <mo>)</mo> </mrow> </mrow>Wherein, A2For second threshold, T is from packet server is mended to once effective request response time interval of part client, C For live data flow, d is the average packet loss ratio of Radio Link；The formula (3) is：<mrow> <msub> <mi>A</mi> <mn>3</mn> </msub> <mo>=</mo> <mfrac> <mn>675</mn> <mi>C</mi> </mfrac> <mn>...</mn> <mrow> <mo>(</mo> <mn>3</mn> <mo>)</mo> </mrow> </mrow>Wherein, A3For the 3rd threshold value, C is live data flow.
- A kind of 5. method for enhancing net cast quality, which is characterized in that including：It mends packet server and obtains the live streaming benefit bag request for mending the transmission of bag client；Bag request is mended in the live streaming includes the number lost According to the sequence number of bag；The benefit packet server is true from the delay buffer of the benefit packet server according to the sequence number of the data packet of the loss Surely the data packet reissued；The data packet reissued is sent to the benefit bag client by the benefit packet server.
- 6. method as claimed in claim 5, which is characterized in that the packet server of mending is obtaining the straight of benefit bag client transmission Before broadcasting benefit bag request, further include：The packet server of mending receives the live data bag that live source is sent in the form of multicast；The live data bag is stored in the delay buffer of the benefit packet server by the packet server of mending.
- 7. method as claimed in claim 5, which is characterized in that the benefit packet server is in the data packet according to the loss Before sequence number determines the data packet reissued from the delay buffer of the benefit packet server, further include：It is identical whether the benefit packet server determines to receive in setting time according to the sequence number of the data packet of the loss The live streaming that bag client is sent of mending mend bag request；Bag request is mended if so, mending packet server and abandoning the live streaming.
- 8. method as claimed in claim 5, which is characterized in that described to mend sequence of the packet server according to the data packet of the loss Row number determines the data packet reissued from the delay buffer of the benefit packet server, including：The packet server of mending is when bag request is mended in the live streamings for obtaining multiple benefit bag clients, according to the multiple benefit bag client The unstable network at place is grouped the multiple benefit bag client；The benefit packet server distributes resource according to grouping, and the live streaming of the benefit bag client in each grouping is mended bag request and pressed The data packet reissued corresponding with the live streaming benefit bag request is determined according to Token Bucket Policing；Wherein, the corresponding token bucket of each grouping often determines that the live streaming of a benefit bag client is mended bag request correspondence and reissued Data packet consume a token bucket in token.
- 9. a kind of device for enhancing net cast quality, which is characterized in that including：Transmit-Receive Unit, for the live data bag in the delay buffer for mending bag client is determined there are during packet loss, with list It broadcasts form and wraps request to packet server transmission live streaming benefit is mended, it is described that the sequence for mending and wrapping and asking to include the data packet lost is broadcast live Number；Wherein, when the Radio Link effective supply band of live streaming is wider than first threshold, the delay buffer of the benefit bag client is big In second threshold and less than the 3rd threshold value；And receive the data packet reissued mended packet server and sent；Processing unit, for being timestamp by the Sequence number maps of the data packet reissued；The Transmit-Receive Unit is additionally operable to according to the data packet reissued described in the timestamp to player transmission.
- 10. device as claimed in claim 9, which is characterized in that the processing unit is determining prolonging for the benefit bag client When caching in live data bag there are packet loss before, be additionally operable to：The Transmit-Receive Unit is controlled to receive the live data bag that live source is sent in the form of multicast；The live data bag is stored in the delay buffer of the benefit bag client.
- 11. device as claimed in claim 9, which is characterized in that the processing unit is additionally operable to：The Transmit-Receive Unit is controlled to receive the reference clock message of live source periodicity sending；When the processing unit is according to the data packet reissued described in the timestamp to player transmission, it is specifically used for：The timestamp is corrected according to the sequence number of the reference clock message and the data packet reissued；The Transmit-Receive Unit is controlled according to the data packet reissued described in the timestamp after correction to player transmission.
- 12. device as claimed in claim 9, which is characterized in that the first threshold needs coincidence formula (1), and described second Threshold value needs coincidence formula (2), and the 3rd threshold value needs coincidence formula (3)；The formula (1) is：<mrow> <msub> <mi>A</mi> <mn>1</mn> </msub> <mo>=</mo> <mi>C</mi> <mo>+</mo> <mfrac> <mrow> <mn>2</mn> <mi>C</mi> <mi>d</mi> </mrow> <msup> <mrow> <mo>(</mo> <mn>1</mn> <mo>-</mo> <mi>d</mi> <mo>)</mo> </mrow> <mn>2</mn> </msup> </mfrac> <mn>...</mn> <mrow> <mo>(</mo> <mn>1</mn> <mo>)</mo> </mrow> </mrow>Wherein, A1For first threshold, C is live data flow, and d is the average packet loss ratio of Radio Link；The formula (2) is：<mrow> <msub> <mi>A</mi> <mn>2</mn> </msub> <mo>=</mo> <msub> <mi>Tlog</mi> <mrow> <mn>2</mn> <mi>d</mi> <mo>-</mo> <msup> <mi>d</mi> <mn>2</mn> </msup> </mrow> </msub> <mfrac> <mn>0.0000059</mn> <mrow> <mi>C</mi> <mi>d</mi> </mrow> </mfrac> <mn>...</mn> <mrow> <mo>(</mo> <mn>2</mn> <mo>)</mo> </mrow> </mrow>Wherein, A2For second threshold, T is from packet server is mended to once effective request response time interval of part client, C For live data flow, d is the average packet loss ratio of Radio Link；The formula (3) is：<mrow> <msub> <mi>A</mi> <mn>3</mn> </msub> <mo>=</mo> <mfrac> <mn>675</mn> <mi>C</mi> </mfrac> <mn>...</mn> <mrow> <mo>(</mo> <mn>3</mn> <mo>)</mo> </mrow> </mrow>Wherein, A3For the 3rd threshold value, C is live data flow.
- 13. a kind of device for enhancing net cast quality, which is characterized in that including：Transmit-Receive Unit, for obtaining the live streaming benefit bag request mended bag client and sent；Bag request is mended in the live streaming to be included losing Data packet sequence number；Processing unit determines for the sequence number of the data packet according to the loss from the delay buffer of the benefit packet server The data packet reissued；The Transmit-Receive Unit is additionally operable to the data packet reissued being sent to the benefit bag client.
- 14. device as claimed in claim 13, which is characterized in that the processing unit is obtaining the straight of benefit bag client transmission Before broadcasting benefit bag request, it is additionally operable to：The Transmit-Receive Unit is controlled to receive the live data bag that live source is sent in the form of multicast；The live data bag is stored in the delay buffer of the benefit packet server.
- 15. device as claimed in claim 13, which is characterized in that the processing unit is in the data packet according to the loss Before sequence number determines the data packet reissued from the delay buffer of the benefit packet server, it is additionally operable to：Determine that identical benefit bag client whether was received in setting time to be sent out according to the sequence number of the data packet of the loss Bag request is mended in the live streaming sent；If so, abandoning the live streaming mends bag request.
- 16. device as claimed in claim 13, which is characterized in that the processing unit is according to the sequence of the data packet of the loss When row number determines the data packet reissued from the delay buffer of the benefit packet server, it is specifically used for：When bag request is mended in the live streamings for obtaining multiple benefit bag clients, according to the unstable net where the multiple benefit bag client Network is grouped the multiple benefit bag client；Resource is distributed according to grouping, the live streaming benefit bag request of the benefit bag client in each grouping is true according to Token Bucket Policing The fixed data packet reissued corresponding with the live streaming benefit bag request；Wherein, the corresponding token bucket of each grouping often determines that the live streaming of a benefit bag client is mended bag request correspondence and reissued Data packet consume a token bucket in token.
- 17. a kind of computing device, which is characterized in that including：Memory, for storing program instruction；For calling the program instruction stored in the memory, 1 to 4 is required according to the program execution profit of acquisition for processor Or 5 to 8 any one of them method.
- 18. a kind of computer storage media, which is characterized in that the computer-readable recording medium storage has computer can perform Instruction, the computer executable instructions are used to that computer perform claim to be made to require 1 to 4 or 5 to 8 any one of them methods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810001580.4A CN108111531B (en) | 2018-01-02 | 2018-01-02 | Method and device for enhancing video live broadcast quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810001580.4A CN108111531B (en) | 2018-01-02 | 2018-01-02 | Method and device for enhancing video live broadcast quality |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108111531A true CN108111531A (en) | 2018-06-01 |
| CN108111531B CN108111531B (en) | 2020-12-08 |
Family
ID=62219523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810001580.4A Active CN108111531B (en) | 2018-01-02 | 2018-01-02 | Method and device for enhancing video live broadcast quality |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108111531B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110022534A (en) * | 2019-03-28 | 2019-07-16 | 山东省计算中心（国家超级计算济南中心） | A kind of data transmission method and device based on multicast |
| CN110062339A (en) * | 2019-03-28 | 2019-07-26 | 山东省计算中心（国家超级计算济南中心） | A kind of method and apparatus of shareable data transmission |
| CN110351569A (en) * | 2019-06-25 | 2019-10-18 | 腾讯科技（深圳）有限公司 | A kind of live content processing method, device, equipment and medium |
| CN111865874A (en) * | 2019-04-28 | 2020-10-30 | 成都鼎桥通信技术有限公司 | Data transmission method and device |
| CN113347137A (en) * | 2020-03-02 | 2021-09-03 | 广州虎牙科技有限公司 | Method and device for patching data stream slices, computer equipment and storage medium |
| CN114025389A (en) * | 2021-11-01 | 2022-02-08 | 网易（杭州）网络有限公司 | Data transmission method and device, computer equipment and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103533451A (en) * | 2013-09-30 | 2014-01-22 | 广州华多网络科技有限公司 | Method and system for regulating jitter buffer |
| CN105072508A (en) * | 2015-08-12 | 2015-11-18 | 苏州华启智能科技有限公司 | System and method for making up packets for multimedia playing of wireless network |
| US20160198199A1 (en) * | 2013-08-01 | 2016-07-07 | Telefonaktebolaget L M Ericsson (Publ) | Method and apparatus for controlling streaming of video content |
| CN106534884A (en) * | 2016-11-10 | 2017-03-22 | 中广热点云科技有限公司 | Code rate control method and system for video coding |
-
2018
- 2018-01-02 CN CN201810001580.4A patent/CN108111531B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160198199A1 (en) * | 2013-08-01 | 2016-07-07 | Telefonaktebolaget L M Ericsson (Publ) | Method and apparatus for controlling streaming of video content |
| CN103533451A (en) * | 2013-09-30 | 2014-01-22 | 广州华多网络科技有限公司 | Method and system for regulating jitter buffer |
| CN105072508A (en) * | 2015-08-12 | 2015-11-18 | 苏州华启智能科技有限公司 | System and method for making up packets for multimedia playing of wireless network |
| CN106534884A (en) * | 2016-11-10 | 2017-03-22 | 中广热点云科技有限公司 | Code rate control method and system for video coding |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110022534A (en) * | 2019-03-28 | 2019-07-16 | 山东省计算中心（国家超级计算济南中心） | A kind of data transmission method and device based on multicast |
| CN110062339A (en) * | 2019-03-28 | 2019-07-26 | 山东省计算中心（国家超级计算济南中心） | A kind of method and apparatus of shareable data transmission |
| CN110022534B (en) * | 2019-03-28 | 2021-06-08 | 山东省计算中心（国家超级计算济南中心） | Data transmission method and device based on multicast |
| CN110062339B (en) * | 2019-03-28 | 2021-09-17 | 山东省计算中心（国家超级计算济南中心） | Method and device for shareable data transmission |
| CN111865874A (en) * | 2019-04-28 | 2020-10-30 | 成都鼎桥通信技术有限公司 | Data transmission method and device |
| CN111865874B (en) * | 2019-04-28 | 2022-08-16 | 成都鼎桥通信技术有限公司 | Data transmission method and device |
| CN110351569A (en) * | 2019-06-25 | 2019-10-18 | 腾讯科技（深圳）有限公司 | A kind of live content processing method, device, equipment and medium |
| CN113347137A (en) * | 2020-03-02 | 2021-09-03 | 广州虎牙科技有限公司 | Method and device for patching data stream slices, computer equipment and storage medium |
| CN113347137B (en) * | 2020-03-02 | 2024-03-05 | 广州虎牙科技有限公司 | Patch method and device for data stream slice, computer equipment and storage medium |
| CN114025389A (en) * | 2021-11-01 | 2022-02-08 | 网易（杭州）网络有限公司 | Data transmission method and device, computer equipment and storage medium |
| CN114025389B (en) * | 2021-11-01 | 2024-04-30 | 网易（杭州）网络有限公司 | Data transmission method, device, computer equipment and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108111531B (en) | 2020-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108111531A (en) | A kind of method and device for enhancing net cast quality | |
| CN102546081B (en) | Method for detecting packet loss, system and media client | |
| WO2020192152A1 (en) | Video transmission method, root node, child node, p2p server, and system | |
| US11178200B2 (en) | Systems and methods for playing adaptive bitrate streaming content by multicast | |
| CN108848530B (en) | Method and device for acquiring network resources and scheduling server | |
| CN108199925A (en) | A kind of data transmission method for uplink, method of reseptance and device | |
| CN107493183A (en) | A kind of Fault Locating Method and device | |
| JP2000078573A (en) | Hierarchical encoded data distribution device | |
| RU2598805C2 (en) | Method for dynamic adaptation of repetition frequency of bits when receiving and appropriate receiver | |
| CN109769023A (en) | A kind of data transmission method, associated server and storage medium | |
| JP2008277961A (en) | On-demand data distribution system | |
| CN109996094A (en) | Video broadcasting method, apparatus and system | |
| CN110087140A (en) | A kind of method, apparatus, medium and equipment for transmitting stream medium data | |
| CN106454553A (en) | A precise time delay live video network transmission control method | |
| CN106664440A (en) | Method and device for receiving and transmitting information in multimedia system | |
| CN107396136A (en) | A kind of video data acquisition methods, device, server and medium | |
| US20150188963A1 (en) | Systems and Methods for Distributing Adaptive Bitrate Streaming Content by Multicast | |
| KR20040020639A (en) | Dynamic control method of realtime multimedia data generation rate, and apparatus thereof. | |
| CN103124292A (en) | Method and device for scheduling data in P2P (peer-to-peer) stream media system | |
| US8904020B2 (en) | Method which permits a block-based file to be played out during transmission | |
| JP3809813B2 (en) | Content distribution method and content distribution system using the same | |
| KR20050051703A (en) | Data distribution device capable of distributing a content | |
| CN105991469B (en) | Dynamic time window and caching mechanism under a kind of heterogeneous network transmission | |
| CN101729878B (en) | Method of management of trick mode commands destined to control a digital content streaming server | |
| CN111245566A (en) | Method and device for preventing packet loss of unreliable network, storage medium and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |