CN101651826B - Method and device for sending and receiving media and system - Google Patents
Method and device for sending and receiving media and system Download PDFInfo
- Publication number
- CN101651826B CN101651826B CN2008101346872A CN200810134687A CN101651826B CN 101651826 B CN101651826 B CN 101651826B CN 2008101346872 A CN2008101346872 A CN 2008101346872A CN 200810134687 A CN200810134687 A CN 200810134687A CN 101651826 B CN101651826 B CN 101651826B
- Authority
- CN
- China
- Prior art keywords
- media
- frame
- packet
- video
- data packet
- 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.)
- Active
Links
Images
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The embodiment of the invention discloses a method and a device for sending and receiving media and a system for transmitting media, and relates to the field of communication. The method for sending the media comprises the following steps: acquiring a media slicing data packet which carries transmission information; acquiring media slicing video frame distribution information which expresses a corresponding relationship between a media slicing video frame and the transmission information carried by the media slicing data packet; and controlling the sending of the media slicing data packet according to the video frame distribution information. The embodiment of the invention can be used for realizing transmission control for the media based on the video frame.
Description
Technical field
The embodiment of the invention relates to the communications field, relates in particular to method, device and the system of a kind of transmission and receiving media.
Background technology
In P2P (peer-to-peer, peer-to-peer network) system, two or more PCs or miscellaneous equipment, the common source that comprises disposal ability, program and data is shared in direct communication or cooperation on network each other.In the P2P structure, network does not exist Centroid or central server, and each node is all being taken on these triple responsibilities of information consumer, informant and information intermediary person.Each node in the P2P network all has identical status, and the rights and duties of every computer all are reciprocity, is not similar to server and the branch of client computer in C/S (Client/Server) system.
Fig. 1 is a kind of P2P Overlay (overlay network) of Peer-Client structure.All Peer (node) have formed P2P Overlay, and Client (user) hangs under the Peer, can only support issue and received content, the route of not participating in P2P Overlay with search.Client can be through the Put order with content (segmental identification/Value; The content that the mark value of content/mark value is corresponding) is published to above the P2P Overlay; Peer1 finds according to specific P2P rule (for example DHT algorithm (Distributed Hash Table, distributed hashtable)) and is responsible for root (root node) Peer2 that deposits segmental identification/Value specially.It is right that Peer2 preserves segmental identification/Value; Segmental identification/Value is to having write down the pairing Value of each segmental identification; Value is generally the pairing content of segmental identification (this content can be real content, also can be the source address that this content can be provided).When Client2 needs same content-label value (segmental identification), then can initiate the Get order to P2P Overlay, search the pairing Value of segmental identification.Peer3 finds according to specific P2P rule (for example DHT algorithm) and is responsible for the root node Peer2 that deposits segmental identification/Value specially.Last Peer2 returns the pairing Value of segmental identification (be the content of Client1 issue, or the address of the Client1 of this content can be provided) and gives Client2.
VoD (Video On Demand) business is a VOD service, and the user can be according to needs or the hobby of oneself, video traffics such as the film that program request at any time oneself needs, TV programme.And professional based on P2P (Peer-to-Peer, the peer-to-peer network) VoD of burst scheduling, realize that for adopting VoD is professional based on the P2P network of burst scheduling.For example, source of media is divided into 900 bursts with the film of one one 1 little duration, the film of each burst correspondence duration in 4 second, and each burst identifies with a segmental identification (mark value), and is distributed on the P2P Overlay (overlay network).In case other users need watch certain burst, just can find source of media from P2P Overlay, thereby obtain this burst content through the segmental identification of this burst.
Carry out burst at file to for example film, generate the media description file, the media description file is used to describe the essential information of medium.In the P2P business, for example, generally comprise: routine informations such as film name, film size, film code check, publisher, issuing time for a film.In the P2P network, be to be that unit controls with the burst to the transmission of medium, along with developing rapidly of network video service, this control mode can not satisfy user's demand.
A kind of in addition transmission means of controlling medium is carried transmission information for through the mode in the band in the data, when receiving terminal is received data, it is said that be input into row control through the transmission information logarithm of data carry.
In the process that realizes the embodiment of the invention, the inventor finds to exist at least in the prior art following problem:
Data transmission channel is main with the transmission data, and the media delivery control information of therefore carrying in the band is limited, in case data packets for transmission is lost, the media delivery control information of carrying in the band also can be lost thereupon, and therefore transmitting control mode has significant limitation.
Summary of the invention
Embodiments of the invention provide the system of method, device and the transmission medium of a kind of transmission and receiving media, can carry out the transmission control based on frame of video to medium.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of method of sending medium comprises:
Obtain media slicing data packet, said packet carries transmission information;
Obtain the video frame distribution information of media slicing; Said video frame distribution information is represented, the corresponding relation between the transmission information that the frame of video of media slicing and media slicing data packet are carried;
According to said video frame distribution information, the transmission of control media slicing data packet.
A kind of method of receiving media comprises:
The video frame distribution information of receiving media burst, said video frame distribution information are represented, the corresponding relation between the transmission information that the frame of video of media slicing and media slicing data packet are carried;
According to said video frame distribution information, the reception of control media slicing data packet.
A kind of device that sends medium comprises:
Acquiring unit is used to obtain media slicing data packet, and said packet carries transmission information; Obtain the video frame distribution information of media slicing; Said video frame distribution information is represented, the corresponding relation between the transmission information that the frame of video of media slicing and media slicing data packet are carried;
Control unit is used for according to said video frame distribution information, the transmission of control media slicing data packet.
A kind of device of receiving media comprises:
Receiving element, the video frame distribution information of receiving media burst, said video frame distribution information are represented, the corresponding relation between the transmission information that the frame of video of media slicing and media slicing data packet are carried;
Control unit, according to said video frame distribution information, the reception of control media slicing data packet.
A kind of system of transmission medium comprises:
The medium transmitting terminal obtains media slicing data packet, and said packet carries the transmission information of packet; Obtain the video frame distribution information of media slicing; According to said video frame distribution information, the transmission of control media slicing data packet;
Media receiving end, the video frame distribution information of receiving media burst, according to said video frame distribution information, the reception of control media slicing data packet;
Said video frame distribution information is represented, the corresponding relation frame between the transmission information that the frame of video of media slicing and media slicing data packet are carried.
The scheme of the described transmission medium of the embodiment of the invention, the medium transmitting terminal obtains media slicing data packet, and said packet carries the transmission information of packet; Obtain the video frame distribution information of media slicing; According to said video frame distribution information, the transmission of control media slicing data packet; Media receiving end, the video frame distribution information of receiving media burst, according to said video frame distribution information, the reception of control media slicing data packet; Said video frame distribution information is represented, the corresponding relation between the transmission information that the frame of video of media slicing and media slicing data packet are carried; Therefore can control the transmission of the frame of video of medium through out-band method.
Description of drawings
Fig. 1 is the structure chart of the P2P overlay network of Peer-Client in the prior art (node-client) structure;
Fig. 2 sends the flow chart of first embodiment of the method for medium for the present invention;
Fig. 3 sends the flow chart of second embodiment of the method for medium for the present invention;
Fig. 4 is the frame distribution map behind the media slicing;
Fig. 5 is the video frame distribution information of medium among Fig. 4;
Fig. 6 sends the flow chart of the 3rd embodiment of the method for medium for the present invention;
Fig. 7 is the flow chart of first embodiment of the method for receiving media of the present invention;
Fig. 8 is the flow chart of second embodiment of the method for receiving media of the present invention;
Fig. 9 is the flow chart of the 3rd embodiment of the method for receiving media of the present invention;
Figure 10 sends the structural representation of device first embodiment of medium for the present invention;
Figure 11 sends the structural representation of device second embodiment of medium for the present invention;
Figure 12 sends the structural representation of device the 3rd embodiment of medium for the present invention;
Figure 13 is the structural representation of device first embodiment of receiving media of the present invention;
Figure 14 is the structural representation of device second embodiment of receiving media of the present invention;
Figure 15 is the structural representation of device the 3rd embodiment of receiving media of the present invention;
Figure 16 is the structural representation of the system of embodiment of the invention transmission medium.
Embodiment
For the advantage of the technical scheme that makes the embodiment of the invention is clearer, embodiments of the invention are done further to specify below in conjunction with accompanying drawing and specific embodiment.
On the one hand, the embodiment of the invention provides a kind of method of sending medium.
As shown in Figure 2, the flow chart of first embodiment of the method for embodiment of the invention transmission medium comprises:
S101, the medium transmitting terminal obtains media slicing data packet, and said packet carries transmission information; Obtain the video frame distribution information of media slicing; Corresponding relation between the transmission information that the frame of video of said video frame distribution information presentation medium burst and media slicing data packet are carried;
S102, medium transmitting terminal control the transmission of media slicing data packet according to said video frame distribution information.
The embodiment of the invention is sent the method for medium, obtains the video frame distribution information of media slicing data packet and media slicing; According to said video frame distribution information, the transmission of control media slicing data packet.Said packet carries transmission information; Corresponding relation between the transmission information that the frame of video of said video frame distribution information presentation medium burst and media slicing data packet are carried; Through method with external receipts video frame distribution information, can be to medium based on the transmission of frame of video control, the video frame distribution information of the outer transmission of band media slicing, can the information transmitted amount many, and information transmitted is complete.
Optional, as shown in Figure 3, the flow chart for second embodiment of the method for the transmission medium of the embodiment of the invention comprises:
S201, the medium transmitting terminal obtains media slicing data packet, and said packet carries transmission information; Obtain the video frame distribution information of media slicing; Corresponding relation between the transmission information that the frame of video of said video frame distribution information presentation medium burst and media slicing data packet are carried;
The medium transmitting terminal obtains media slicing data packet, and the step of obtaining the video frame distribution information of media slicing is:
The medium transmitting terminal generates media slicing data packet, and the medium transmitting terminal generates the video frame distribution information of media slicing;
Perhaps do, the medium transmitting terminal is from the packet of other source of media receiving media burst, and the medium transmitting terminal is from the video frame distribution information of other source of media receiving media burst.
The step of the video frame distribution information of said receiving media burst is:
The descriptor of receiving media, the descriptor of said medium are carried the frame of video descriptor of said media slicing; From the descriptor of media slicing, obtain the video frame distribution information of media slicing.
Perhaps be that the descriptor of receiving media, the descriptor of said medium are carried the burst descriptor of said medium; The burst descriptor of said medium is carried the frame of video descriptor of said media slicing; Obtain the burst descriptor of said medium from the descriptor of said medium; Obtain the frame of video descriptor of said media slicing from the burst descriptor of said medium.
Below describe the medium transmitting terminal and generate media slicing data packet; The medium transmitting terminal generates the burst principle of the video frame distribution information of media slicing, and is as shown in Figure 4, for one one by H.264 or the length of MPEG4 format compressed be 1 hour film; Can be divided into 900 bursts; The content of corresponding 4 second hands of each burst, successively with segmental identification 1 to segmental identification 900 signs, the content between segmental identification 76 correspondences 5 minutes 0 second to 5 minutes and 4 seconds for example.And each burst is made up of 8 GOP (Group of Picture, image sets), is GOP1 to GOP8.Each GOP promptly, comprises 1 I frame again by 15 frame groups, several P frames, and several B frames, in the present embodiment, each GOP contains 1 I frame, 4 P frames, 10 B frames.Different frame data have a frame type sign at head, are used for the type of codec identification frame.
Frame is the single width image frame of least unit in the image animation, is equivalent to each the lattice camera lens on the cinefilm.One frame is exactly a secondary static picture, and continuous frame just forms animation, like film image etc.Usually said frame number, briefly, the frame number of the picture that in 1 time in second, transmits exactly also is appreciated that to graphic process unit can refresh several times each second, uses fps (Frames Per Second) expression usually.Each frame all is static image, and in extremely rapid succession display frame has just formed the illusion of motion.High frame per second can obtain more smooth, more true to nature animation.Frame number each second (fps) is many more, and the action that is shown will be more smooth.
Wherein, I frame (I-frame) is an independent frame, uses the initial data direct coding, and I frame information encoded amount is big, so data volume is big.And the I frame can independently reduce broadcast, is the basis of other frames.Lose the I frame, B frame, P frame in follow-up this GOP are also just useless.Wherein the I frame is periodically to appear in the sequence of frames of video, and the frequency of occurrences can be selected by encoder.
The P frame is a forward predicted frame, carries out motion prediction with nearest I or P frame as the reference frame comparison, only writes down the difference of this frame and reference frame.So code efficiency is higher, data volume is little, but needs the reference frame data of front to reduce frame.
The B frame is bi-directional predicted interpolation frame, can carry out motion prediction as benchmark with the frame of front and back, and compression rates is maximum, and data volume is minimum.
The step that medium transmitting terminal or other source of media generate media slicing data packet is below described.This step comprises:
(a) obtain the frame of video of media slicing;
(b), the frame of video of media slicing is packaged into a plurality of packets according to the size of the frame of video of media slicing.
Packet is the RTP bag that comprises shift time, sequence of data packet number, it will be understood by those skilled in the art that can be RTP bag or proprietary protocol bag.Among this embodiment, be example with the RTP bag.In the RTP packet header of RTP regulation, comprise two fields: sequence number and timestamp.Sequence number is mainly used in each packet of mark, and for example first sequence of data packet number is that 0, the second data packet number is that 1, the three data packet number is that 2...... increases progressively with this.Moment when timestamp is used for first byte sampling of identification data packet.When said packet was RTP, the shift time of the frame of video that packet is corresponding can carry through the timestamp of RTP.Each frame of video can be packaged into a plurality of RTP bags, and the timestamp of a plurality of RTP bags of corresponding same frame of video is identical.Frame of video is packaged into a plurality of RTP bags for prior art, repeats no more here.
Source of media is carried out the RTP encapsulation to each frame in each burst by its size and is deposited after with the film burst.The number of the packet after the different frame encapsulation is different; For example bigger about 20 RTP of I frame needs wrap and accomplish transmission; And a smaller B frame needs about 2 RTP to wrap to accomplish transmission, and the P frame of size between I frame and B frame needs about 4 RTP to wrap to accomplish transmission.Source of media generates descriptor, the frame of video descriptor of burst, the burst descriptor of medium medium after with film burst and encapsulation.
Wherein, the descriptor of medium is used to describe the information of media characteristic, comprising: basic descriptor and burst descriptor.For example for a film, basic descriptor comprises: film name, film size, film code check, publisher, issuing time etc.
The burst descriptor is used to describe the essential information of all bursts of medium.Comprise: each burst size, each segmental identification (Key), each burst time corresponding, the check code of each burst and the video frame distribution information of each burst.
The video frame distribution information of burst, the corresponding relation of the frame of video of presentation medium and media slicing data packet transmission information.Said video frame distribution information comprises: the sequence number (SN) of the initial data bag of the shift time (timestamp) of segmental identification (Key), frame of video, the type of frame of video and frame of video, the data packet number (packet) of frame of video.The type of said frame of video comprises: I frame, P frame, B frame.
The descriptor of medium or burst descriptor, video frame distribution information can be carried, transmit, preserve with carrier formats such as file, communication signaling, communication messages.
As shown in Figure 5; With segmental identification 76 is example, and in the video frame distribution information of segmental identification 76, timestamp is that 300000 milliseconds RTP bag is the I frame; Totally 20 RTP wrap; The sequence number of first bag in these 20 bags (be homing sequence number) is that the sequence number of 1, the second bag is 2 ... the sequence number of the 20th bag is 20.Timestamp is every to be a frame at a distance from 40 milliseconds.And for example timestamp is that 300040 milliseconds RTP bag is the B frame, and totally 2 RTP bags, the sequence number of first bag in these 2 bags (be homing sequence number) are that the sequence number of 21, the second bags is 22.
S202, the locating information of medium transmitting terminal receiving media request end request service;
Said locating information is:
The corresponding segmental identification of broadcast zero-time of media request end subscriber customization, and the sequence number of the initial data bag of the next I frame after the broadcast zero-time corresponding data bag of customization; In the present embodiment, the locating information of reception is: segmental identification is a segmental identification 76, sequence of data packet numbers 21.
Perhaps be the corresponding segmental identification of broadcast zero-time of media request end subscriber customization, and the shift time in the burst of the broadcast zero-time of customization correspondence; In the present embodiment, the locating information of reception is: 2900 milliseconds of segmental identification 76 and shift times.
Perhaps be the broadcast zero-time of media request end subscriber customization.In the present embodiment, the locating information of reception is: 5 minutes 2 seconds 900 milliseconds.
S203, medium transmitting terminal be according to said video frame distribution information, search after the corresponding packet of said locating information the initial data bag of next I frame; In the present embodiment, the initial data bag of the next I frame after the corresponding packet of locating information is: segmental identification is 76, sequence of data packet number is 21 packet.
S204, the initial data packet start of the next I frame of medium transmitting terminal after the corresponding packet of locating information is for media receiving end provides media services.
In the present embodiment, be that the packet of segmental identification 76, sequence of data packet numbers 21 begins, media services are provided from segmental identification.
Optional, among the step S202, said media receiving end requested service is that request is filled in clean culture soon; The initial data packet start of the next I frame of medium transmitting terminal described in the step S204 after the corresponding packet of locating information then for media receiving end provides the step of media services is:
The initial data packet start of the next I frame of medium transmitting terminal after the corresponding packet of locating information is filled service soon for media receiving end provides clean culture.In the present embodiment, the medium transmitting terminal is that segmental identification 76, sequence of data packet number are that 21 packet begins from segmental identification, fills service soon for media receiving end provides clean culture.
The embodiment of the invention can realize the service of filling soon that becomes more meticulous based on the I frame data, reduces the startup time-delay and the VCR operation delay of media receiving end playing media.
As shown in Figure 6, the flow chart of the 3rd embodiment of the method for the transmission medium of the embodiment of the invention comprises:
S301, the medium transmitting terminal obtains media slicing data packet, and said packet carries transmission information; Obtain the video frame distribution information of media slicing; Corresponding relation between the transmission information that the frame of video of said video frame distribution information presentation medium burst and media slicing data packet are carried;
The transport packet of said packet is drawn together: the shift time of the frame of video of the sequence number of packet, packet correspondence;
Said video frame distribution information comprises: the sequence number of the initial data bag that the shift time of segmental identification, frame of video, the type of frame of video and frame of video are corresponding, the corresponding quantity of data packets of frame of video; The type of said frame of video comprises: I frame, P frame, B frame.
S302, medium transmitting terminal judge the frame type that said media slicing data packet is corresponding according to said video frame distribution information;
In the present embodiment; With video frame distribution information shown in Figure 5 is example; Sequence number is that the corresponding frame type of 20 packet is the I frame, and sequence number is that 25,26 the corresponding frame type of packet is the P frame, and sequence number is that 21,22,23,24 the corresponding frame type of packet is the B frame.
S303, the frame type that the medium transmitting terminal is corresponding according to said media slicing data packet, the priority of the said media slicing data packet of mark;
The agreement (like IP agreement, Ethernet protocol) that the priority of the said media slicing data packet of mark can be passed through network layer, link layer realizes.
Wherein, when the frame type under the media slicing data packet was the I frame, the priority of the said media slicing data packet of mark was high priority; In the present embodiment, flag sequence number is that 20 packet is a high priority.
When the frame type under the media slicing data packet was the P frame, the priority of the said media slicing data packet of mark was medium priority; In the present embodiment, flag sequence number is that 25,26 packet is a medium priority.
When the frame type under the media slicing data packet was the B frame, the priority of the said media slicing data packet of mark was low priority.In the present embodiment, flag sequence number is that 21,22,23,24 packet is a low priority
S304, the medium transmitting terminal sends the media slicing data packet behind the mark priority information.
In the embodiment of the invention, follow-up web-transporting device can carry out QoS (Quality of Service, service quality) control according to the priority of media slicing data packet mark.When follow-up web-transporting device transmission mark is stated the media slicing data packet after the priority, when network takes place when congested, at first loss priority low, to the packet of the most weak B frame type of GOP influence.The preferential packet that transmits the I frame type that GOP has the greatest impact, priority is the highest that keeps is realized the QoS control based on video frame distribution information.
Corresponding to the method that the present invention sends medium, on the other hand, the embodiment of the invention provides a kind of method of receiving media.
As shown in Figure 7, the flow chart for first embodiment of the method for receiving media of the present invention stream comprises:
S401, the video frame distribution information of media receiving end receiving media burst, the corresponding relation between the transmission information that the frame of video of said video frame distribution information presentation medium burst and media slicing data packet are carried;
S402, media receiving end control the reception of media slicing data packet according to said video frame distribution information.
The method of embodiment of the invention receiving media, the video frame distribution information of media receiving end receiving media burst, according to said video frame distribution information, the reception of control media slicing data packet.Corresponding relation between the transmission information that the frame of video of said video frame distribution information presentation medium burst and media slicing data packet are carried; Can carry out reception control to medium based on frame of video.
As shown in Figure 8, the flow chart for second embodiment of the method for receiving media of the present invention stream comprises:
S501, the video frame distribution information of media receiving end receiving media burst, the corresponding relation between the transmission information that the frame of video of said video frame distribution information presentation medium burst and media slicing data packet are carried;
The transport packet of said packet is drawn together: the shift time of the frame of video of the sequence number of packet, packet correspondence;
Said video frame distribution information comprises: the sequence number of the initial data bag that the shift time of segmental identification, frame of video, the type of frame of video and frame of video are corresponding, the corresponding quantity of data packets of frame of video; The type of said frame of video comprises: I frame, P frame, B frame.
The step of the video frame distribution information of said receiving media is:
The descriptor of receiving media, the descriptor of said medium is carried the video frame distribution information of said medium; Obtain the video frame distribution information of said medium from the descriptor of said medium;
Perhaps be that the step of the burst descriptor of said receiving media is: the descriptor of receiving media, the descriptor of said medium are carried the burst descriptor of said medium, and the burst descriptor of said medium is carried the video frame distribution information of said medium; Obtain the burst descriptor of said medium from the descriptor of said medium, obtain the video frame distribution information of said medium from the burst descriptor of said medium.
S502, media receiving end obtain the broadcast zero-time of customization; In the present embodiment, suppose that the user is dragged to 900 milliseconds in film 5 minutes and 2 seconds.
S503, media receiving end search the corresponding locating information of broadcast zero-time of said customization according to said video frame distribution information;
The corresponding locating information of the broadcast zero-time of said customization is:
The segmental identification that the broadcast zero-time of said customization is corresponding, and the sequence number of the initial data bag of the next I frame after the broadcast zero-time corresponding data bag of customization; In the present embodiment, according to video frame distribution information shown in Figure 5, the corresponding locating information in 5 minutes 2 seconds positions of 900 milliseconds is: segmental identification is 76, sequence of data packet number is 21.
Perhaps be the segmental identification that the broadcast zero-time of customization is corresponding, and the shift time in the burst of the broadcast zero-time of customization correspondence; In the present embodiment, according to video frame distribution information shown in Figure 5, the corresponding locating information in 5 minutes 2 seconds positions of 900 milliseconds is: segmental identification be 76 and shift time be 2900 milliseconds.
Perhaps be the broadcast zero-time of customization.In the present embodiment, locating information is: 5 minutes 2 seconds 900 milliseconds.
S504 when media receiving end request medium transmitting terminal provides media services, sends the corresponding locating information of broadcast zero-time of said customization to the medium transmitting terminal;
In the embodiment of the invention, the locating information of transmission is: segmental identification is that segmental identification 76, sequence of data packet number are 21.
Perhaps be: segmental identification be 76 and shift time be 2900 milliseconds.
Perhaps do, 5 minutes 2 seconds 900 milliseconds.
S505, the initial data packet start of the next I frame of media receiving end after the corresponding packet of said locating information is accepted service from the medium transmitting terminal.In the present embodiment, be that segmental identification 76, sequence of data packet number are 21 to begin the acceptance service from segmental identification.
When the described request service is filled service soon for the request clean culture; The initial data packet start of said next I frame after the corresponding packet of locating information; The step of accepting service is: the initial data packet start of the next I frame after the corresponding packet of said locating information, and accept clean culture and fill service soon.In the present embodiment, be that segmental identification 76, sequence of data packet number are 21 beginnings, accept clean culture and fill service soon, can receive data rapidly, obtain the service of " one to one " relatively stable reliable content source from segmental identification.
The method of the described receiving media of the embodiment of the invention also comprises:
S506, media receiving end resolve to the frame of video of medium with said media slicing data packet;
S507, media receiving end play the frame of video of said medium.The embodiment of the invention can realize the service of filling soon that becomes more meticulous based on the I frame data, reduces the startup time-delay and the VCR operation delay of media receiving end media play.Broadcast when VCR operation refers to displaying video, time-out, precedingly drag, after drag, operations such as F.F., rewind down.
Optional, the method for the described receiving media of the embodiment of the invention also comprises:
S508, media receiving end preserve said media slicing data packet.In the P2P network, can media services be provided for other services request entity.
As shown in Figure 9, the flow chart for the 3rd embodiment of the method for receiving media of the present invention stream comprises:
S601, the video frame distribution information of media receiving end receiving media burst, the corresponding relation between the transmission information that the frame of video of said video frame distribution information presentation medium burst and media slicing data packet are carried;
The transport packet of said packet is drawn together: the shift time of the frame of video of the sequence number of packet, packet correspondence;
Said video frame distribution information comprises: the sequence number of the initial data bag that the shift time of segmental identification, frame of video, the type of frame of video and frame of video are corresponding, the corresponding quantity of data packets of frame of video; The type of said frame of video comprises: I frame, P frame, B frame.
S602, when data-bag lost, media receiving end is searched the sequence number of the packet of losing according to the sequence number of the packet that receives;
Before this step, can also comprise that the sequence number according to the packet that receives judges whether the packet of losing; If be judged as the packet of losing, then search the sequence number of the packet of losing.
With the example that is transmitted as of the RTP data flow of segmental identification 76, media receiving end receives sequence number and is respectively 19,23,24,25,26 RTP bag, judges that therefore losing sequence number is three RTP bags of 20,21,22.
S603 according to video frame distribution information, judges the affiliated frame type of losing of packet;
According to the video frame distribution information in the description document among Fig. 5, judge that sequence number is that the frame type of 20 bag is the I frame, sequence number is the frame type B frame of 21 and 22 bag.
S604 according to the frame type under the packet of losing, sends the repeat requests of corresponding data bag.
The data-bag lost of I frame type, the P frame type among the same GOP that receives after can causing, the packet of B frame type are invalid, and the B frame lose to the influence of whole GOP much smaller than, I frame and P frame lose influence to whole GOP.Therefore, the frame type under the packet that said basis is lost, send the step that can also increase judgement before the step of repeat requests of corresponding data bag:
When the frame type I frame under the packet of losing, confirm to send repeat requests;
Perhaps be when the frame type under the packet of losing is I frame or P frame, can according to circumstances select to send or do not send repeat requests.In the present embodiment, media receiving end request retransmission sequence number is 20 bag, is 21 and 22 packet drop and ignore sequence number.Therefore, the embodiment of the invention can realize the frame type based on data, and realizes different packet loss retransmission service.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method; Be to accomplish through the relevant hardware of computer program instructions; Described program can be stored in the computer read/write memory medium; This program can comprise the flow process like each embodiment of above-mentioned method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
On the other hand, the embodiment of the invention provides a kind of device that sends medium.
Shown in figure 10, the structural representation for the present invention sends device first embodiment of medium comprises:
Acquiring unit 21 is used to obtain media slicing data packet; And the video frame distribution information of obtaining media slicing; Said packet carries transmission information, the corresponding relation between the transmission information that the frame of video of said video frame distribution information presentation medium burst and media slicing data packet are carried;
Control unit 22 is used for according to said video frame distribution information, the transmission of control media slicing data packet.
The embodiment of the invention is sent in the device of medium, obtains media slicing data packet through acquiring unit, and said packet carries transmission information; Obtain the video frame distribution information of media slicing; Control unit is controlled the transmission of media slicing data packet according to said video frame distribution information, and said video frame distribution information is represented, the corresponding relation between the transmission information that the frame of video of media slicing and media slicing data packet are carried; Can realize that out-band method is to the transmission control of medium based on frame of video.
Shown in figure 11, send the structural representation of device first embodiment of medium for the present invention.Said acquiring unit 21 comprises: generation unit 211 or receiving element 212, and said generation unit 211 is used to generate the video frame distribution information of media slicing data packet and media slicing; Said receiving element 212 is used for the video frame distribution information of the packet and the media slicing of receiving media burst.
Said control unit 22 comprises: receiving element 221, the locating information of receiving media receiving terminal request service;
Search unit 222, according to said video frame distribution information, search after the corresponding packet of said locating information the initial data bag of next I frame;
The device of said transmission medium also comprises: transmitting element 23, the initial data packet start of the next I frame after the corresponding packet of locating information provides media services.
The embodiment of the invention is sent in the device of medium, obtains media slicing data packet through acquiring unit, and said packet carries transmission information; Obtain the video frame distribution information of media slicing; When receiving element receives services request, receive locating information; Search the unit according to said video frame distribution information, search after the corresponding packet of said locating information the initial data bag of next I frame; The initial data packet start of the next I frame of transmitting element after the corresponding packet of locating information provides media services.Said video frame distribution information is represented, the corresponding relation between the transmission information that the frame of video of media slicing and media slicing data packet are carried; Can realize providing service, reduce the startup time-delay and the VCR operation delay of media receiving end media play based on I frame data bag.
Shown in figure 12, send the structural representation of device first embodiment of medium for the present invention.Said control unit 22 comprises: judging unit 223, according to video frame distribution information, judge the frame type that media slicing data packet is corresponding; Indexing unit 224, the frame type corresponding, the priority of the said media slicing data packet of mark according to media slicing data packet;
The device of said transmission medium also comprises: transmitting element 23, the media slicing data packet behind the transmission mark priority information.
The device that the embodiment of the invention is sent medium obtains media slicing data packet through acquiring unit, and said packet carries transmission information; Obtain the video frame distribution information of media slicing; Judging unit is according to said video frame distribution information, and acquiring unit obtains media slicing data packet, and said packet carries transmission information; Obtain the video frame distribution information of media slicing; Judge the frame type that media slicing data packet is corresponding; The frame type that indexing unit is corresponding according to media slicing data packet, the priority of the said media slicing data packet of mark; Transmitting element sends the media slicing data packet behind the mark priority information, and said video frame distribution information is represented, the corresponding relation between the transmission information that the frame of video of media slicing and media slicing data packet are carried; Realized that follow-up web-transporting device can carry out QoS control according to the priority of mark.
The device that sends medium with the embodiment of the invention is corresponding, and on the other hand, the embodiment of the invention provides a kind of device of receiving media.
Shown in figure 13, the structural representation for device first embodiment of receiving media of the present invention comprises:
Receiving element 11, the video frame distribution information of receiving media burst, the corresponding relation between the transmission information that the frame of video of said video frame distribution information presentation medium burst and media slicing data packet are carried;
Control unit 12, according to said video frame distribution information, the reception of control media slicing data packet.
In the device of embodiment of the invention receiving media; Through control unit according to said video frame distribution information; The reception of control media slicing data packet; The video frame distribution information of receiving element receiving media burst, said video frame distribution information are represented, the corresponding relation between the transmission information that the frame of video of media slicing and media slicing data packet are carried; Can realize medium are carried out the reception control based on frame of video.
Shown in figure 14, the structural representation of device second embodiment of receiving media of the present invention, said control unit 12 comprises: time acquisition unit 121, obtain the media play zero-time of customization; Search unit 122,, search the corresponding locating information of broadcast zero-time of said customization according to said video frame distribution information; Transmitting element 123, the locating information of the request service that the broadcast zero-time of transmission multimedia receiving terminal customization is corresponding;
Said receiving element 11 also is used for, the initial data packet start of the next I frame after the corresponding packet of said locating information, acceptance service.
The device of receiving media can also comprise: resolution unit 13 with said media slicing data packet, resolves to the frame of video of medium; Broadcast unit 14 is play the frame of video of said medium.
The device of receiving media can also comprise preserves unit 15, is used to preserve said media slicing data packet.
The embodiment of the invention can receive the service based on I frame data bag, reduces the startup time-delay and the VCR operation delay of media receiving end media play.
Shown in figure 15, the structural representation of device first embodiment of receiving media of the present invention.Different with accompanying drawing 14 is that said control unit 12 also comprises: search unit 124, according to the sequence number of the packet that receives, search the sequence number of the packet of losing; Judging unit 125 according to video frame distribution information, is judged the affiliated frame type of losing of packet; Transmitting element 126 according to the frame type under the packet of losing, sends the repeat requests of corresponding data bag;
Said receiving element 11 also is used to accept to serve and receive the corresponding data bag of re-transmission.
On the other hand, the present invention implements to provide a kind of system of transmission medium, and is shown in figure 16, and the structural representation for the system of embodiment of the invention transmission medium comprises:
Medium transmitting terminal 32 is used to obtain media slicing data packet, and the video frame distribution information of media slicing; According to said video frame distribution information, the transmission of control media slicing data packet; Said packet carries the transmission information of packet;
Media receiving end 31, the video frame distribution information of receiving media burst, according to said video frame distribution information, the reception of control media slicing data packet; Corresponding relation between the transmission information that the frame of video of said video frame distribution information presentation medium burst and media slicing data packet are carried.
Optional, the transmission of said medium transmitting terminal control media slicing data packet is specially: when receiving services request, receive locating information; According to said video frame distribution information, search after the corresponding packet of said locating information the initial data bag of next I frame; The initial data packet start of the next I frame after the corresponding packet of locating information provides media services.The reception of said media receiving end control media slicing data packet is specially: the broadcast zero-time of obtaining customization; According to said video frame distribution information, search the corresponding locating information of broadcast zero-time of said customization; , plays the medium transmitting terminal the corresponding locating information of zero-time when sending the request service of customization; The initial data packet start of the next I frame after the corresponding packet of said locating information, the acceptance service.
Optional, the reception of said media receiving end control media slicing data packet is specially: according to the sequence number of the packet that receives, search the sequence number of the packet of losing; According to video frame distribution information, judge the affiliated frame type of losing of packet; According to the frame type under the packet of losing, send the repeat requests of corresponding data bag.The transmission of said medium transmitting terminal control media slicing data packet is specially: media services are provided; Receive the repeat requests of corresponding data bag; Send the corresponding data bag of said re-transmission.
Optional, the transmission of said medium transmitting terminal control media slicing data packet is specially: said medium transmitting terminal also is used for according to said video frame distribution information, judges the frame type that media slicing data packet is corresponding; The frame type corresponding according to media slicing data packet, the priority of the said media slicing data packet of mark; Media slicing data packet behind the transmission mark priority information.The transmission of said medium transmitting terminal control media slicing data packet is specially: media receiving end receives the media slicing data packet behind the mark priority information; When sending the media slicing data packet behind the said mark priority information, carry out service quality control.
The embodiment of the invention can realize the service based on I frame data bag, reduces the startup time-delay and the VCR operation delay of media receiving end media play; Be the packet of different frame type, different packet loss retransmission service is provided, service quality control is carried out in the transmission of Media Stream.
The embodiment of the invention can be used in P2P (Peer-to-Peer, the peer-to-peer network) network.In the time of in being applied to the P2P network; Said media receiving end is the Peer of request service; Said medium transmitting terminal is the Peer that media services are provided, and this Peer that media services are provided both can be a source of media, also can obtain the Peer of media content through the P2P network.After source of media inserts the P2P network; Source of media is published to the packet after the media slicing encapsulation and the video frame distribution information of burst on other memory devices in the P2P network, and medium transmitting terminal (Peer of media services promptly is provided) obtains packet and the video frame distribution information of burst after the media slicing encapsulation from this memory device.
Said media receiving end is personal computer, mobile phone, personal digital assistant, server, network-caching equipment; Said medium transmitting terminal is personal computer, mobile phone, personal digital assistant, network-caching equipment.
The above; Be merely embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; Can expect easily changing or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by said protection range with claim.
Claims (30)
1. a method of sending medium is characterized in that, comprising:
Obtain media slicing data packet, said packet carries transmission information;
Obtain the video frame distribution information of media slicing; Corresponding relation between the transmission information that the frame of video of said video frame distribution information presentation medium burst and media slicing data packet are carried;
According to said video frame distribution information, control the transmission of said media slicing data packet;
Said according to video frame distribution information, the step of the transmission of control media slicing data packet comprises:
According to said video frame distribution information, judge the corresponding frame type of the said media slicing data packet of obtaining;
The frame type corresponding according to media slicing data packet, the priority of the said media slicing data packet of mark;
Media slicing data packet behind the transmission mark priority information.
2. the method for transmission medium according to claim 1 is characterized in that:
The transport packet of said packet is drawn together: the shift time of the frame of video of the sequence number of packet, packet correspondence;
Said video frame distribution information comprises: the sequence number of the initial data bag that the shift time of segmental identification, frame of video, the type of frame of video and frame of video are corresponding, the corresponding quantity of data packets of frame of video; The type of said frame of video comprises: I frame, P frame or B frame.
3. the method for transmission medium according to claim 2 is characterized in that,
Said according to video frame distribution information, the step of the transmission of control media slicing data packet comprises:
Receive the media location information of request service;
According to said video frame distribution information, search the initial data bag of the corresponding packet of said media location information next I frame afterwards;
The initial data packet start of the next I frame after the corresponding packet of locating information provides media services.
4. the method for transmission medium according to claim 3 is characterized in that,
The described request service is filled service soon for the request clean culture;
The initial data packet start of said next I frame after the corresponding packet of locating information provides the step of media services to be:
The initial data packet start of the next I frame after the corresponding packet of locating information provides clean culture to fill media services soon.
5. the method for transmission medium according to claim 3 is characterized in that, said media location information is:
The segmental identification that the broadcast zero-time of customization is corresponding, and the sequence number of the initial data bag of the next I frame after the broadcast zero-time corresponding data bag of customization; Or
The segmental identification that the broadcast zero-time of customization is corresponding, and the shift time in the burst of the broadcast zero-time of customization correspondence; Or
The broadcast zero-time of customization.
6. the method for transmission medium according to claim 1 is characterized in that: the said media slicing data packet of obtaining, and the step of obtaining the video frame distribution information of media slicing is:
Generate media slicing data packet, generate the video frame distribution information of media slicing;
Perhaps be the packet of receiving media burst, the video frame distribution information of receiving media burst.
7. the method for transmission medium according to claim 6 is characterized in that, the step of said generation media slicing data packet is:
Obtain the frame of video of media slicing;
According to the size of the frame of video of media slicing, the frame of video of media slicing is packaged into the packet of varying number.
8. the method for transmission medium according to claim 6 is characterized in that, the step of the video frame distribution information of said receiving media burst is:
The descriptor of receiving media, the descriptor of said medium are carried the frame of video descriptor of said media slicing; From the descriptor of medium, obtain the frame of video descriptor of media slicing;
Perhaps do, the descriptor of receiving media burst, the descriptor of said media slicing is carried the video frame distribution information of said media slicing; From the descriptor of media slicing, obtain the video frame distribution information of media slicing.
9. the method for transmission medium according to claim 8 is characterized in that, the step of the burst descriptor of said receiving media is:
The descriptor of receiving media, the descriptor of said medium are carried the burst descriptor of said medium;
From the descriptor of medium, obtain the burst descriptor of medium.
10. the method for a receiving media is characterized in that, comprising:
The video frame distribution information of receiving media burst, said video frame distribution information are represented, the corresponding relation between the transmission information that the frame of video of media slicing and media slicing data packet are carried;
According to said video frame distribution information, the reception of control media slicing data packet;
The transport packet of said packet is drawn together: the shift time of the frame of video of the sequence number of packet, packet correspondence;
Said video frame distribution information comprises: the sequence number of the initial data bag that the shift time of segmental identification, frame of video, the type of frame of video and frame of video are corresponding, the corresponding quantity of data packets of frame of video; The type of said frame of video comprises: I frame, P frame or B frame;
Said according to video frame distribution information, the step of the reception of control media slicing data packet comprises:
The receiving media service;
According to the sequence number of the packet of media services, search the sequence number of the packet of losing;
According to video frame distribution information, judge the affiliated frame type of losing of packet;
According to the frame type under the packet of losing, send the repeat requests of corresponding data bag.
11. the method for receiving media according to claim 10 is characterized in that, and is said according to video frame distribution information, the step of the reception of control media slicing data packet comprises:
Obtain the media play zero-time of request service;
According to said video frame distribution information, search the corresponding locating information of media play zero-time of described request service;
Send the corresponding locating information of media play zero-time of request service;
The initial data packet start of the next I frame after the corresponding packet of said locating information is accepted media services.
12. the method for receiving media according to claim 11 is characterized in that, also comprises:
With said media slicing data packet, resolve to the frame of video of medium;
Play the frame of video of said medium.
13. the method for receiving media according to claim 11 is characterized in that, also comprises:
Preserve said media slicing data packet.
14. the method for receiving media according to claim 11 is characterized in that,
The described request service is filled service soon for the request clean culture;
The initial data packet start of said next I frame after the corresponding packet of locating information, the step of accepting service is:
The initial data packet start of the next I frame after the corresponding packet of said locating information is accepted clean culture and is filled service soon.
15. the method for receiving media according to claim 11 is characterized in that, the corresponding locating information of media play zero-time of described request service is:
The segmental identification that the media play zero-time of described request service is corresponding, and after the broadcast zero-time corresponding data bag of customization the sequence number of initial data bag of next I frame;
Perhaps do, ask the corresponding segmental identification of media play zero-time of service, and the shift time in the burst of the broadcast zero-time correspondence of request service;
Perhaps be the media play zero-time of request service.
16. the method for receiving media according to claim 10 is characterized in that, and is said according to video frame distribution information, the step of the reception of control media slicing data packet also comprises:
Receive the corresponding data bag of said re-transmission.
17. the method for receiving media according to claim 10 is characterized in that, the frame type under the packet that said basis is lost, and the step of sending the repeat requests of corresponding data bag is:
When the frame type I frame under the packet of losing, send repeat requests;
Perhaps be when the frame type under the packet of losing is I frame or P frame, to send repeat requests.
18. the method for receiving media according to claim 10 is characterized in that, the step of the video frame distribution information of said receiving media is:
The descriptor of receiving media, the descriptor of said medium is carried the video frame distribution information of said medium; From the descriptor of medium, obtain the video frame distribution information of said medium;
Perhaps do, the burst descriptor of receiving media, the burst descriptor of said medium is carried the video frame distribution information of said medium; From the burst descriptor of medium, obtain the video frame distribution information of said medium.
19. the method for receiving media according to claim 18 is characterized in that, the step of the burst descriptor of said receiving media is:
The descriptor of receiving media, the descriptor of said medium are carried the burst descriptor of said medium;
From the descriptor of said medium, obtain the burst descriptor of said medium.
20. a device that sends medium is characterized in that, comprising:
Acquiring unit is used to obtain media slicing data packet, and said packet carries transmission information; Obtain the video frame distribution information of media slicing; Said video frame distribution information is represented, the corresponding relation between the transmission information that the frame of video of media slicing and media slicing data packet are carried;
Control unit is used for according to said video frame distribution information, the transmission of control media slicing data packet;
Said control unit comprises:
Judging unit according to said video frame distribution information, is judged the frame type that media slicing data packet is corresponding;
Indexing unit, the frame type corresponding, the priority of the said media slicing data packet of mark according to media slicing data packet;
Transmitting element, the media slicing data packet behind the transmission mark priority information.
21. the device of transmission medium according to claim 20 is characterized in that, said control unit comprises:
Receiving element, the locating information of the service of accepting request;
Search the unit, according to said video frame distribution information, search after the corresponding packet of said media location information the initial data bag of next I frame;
Transmitting element, the initial data packet start of the next I frame after the corresponding packet of locating information provides media services.
22. the device of transmission medium according to claim 20 is characterized in that: said acquiring unit comprises: generation unit or receiving element,
Said generation unit is used to generate media slicing data packet, generates the video frame distribution information of media slicing;
Said receiving element is used for the packet of receiving media burst, the video frame distribution information of receiving media burst.
23. the device of a receiving media is characterized in that, comprising:
Receiving element, the video frame distribution information of receiving media burst, said video frame distribution information are represented, the corresponding relation between the transmission information that the frame of video of media slicing and media slicing data packet are carried;
Control unit, according to said video frame distribution information, the reception of control media slicing data packet;
Said control unit comprises:
Search the unit,, search the sequence number of the packet of losing according to the sequence number of the packet of the media services that receive;
Judging unit according to video frame distribution information, is judged the affiliated frame type of losing of packet;
Transmitting element according to the frame type under the packet of losing, sends the repeat requests of corresponding data bag;
Receiving element is used to accept media services and receives the corresponding data bag that retransmits.
24. the device of receiving media according to claim 23 is characterized in that, said control unit comprises:
Time acquisition unit is obtained the media play zero-time of request service;
Search the unit,, search the corresponding locating information of media play zero-time of described request service according to said video frame distribution information;
Transmitting element, the locating information that the media play zero-time that the request of transmission is served is corresponding;
The initial data packet start of the next I frame after the corresponding packet of said locating information, the acceptance service.
25. the device of receiving media according to claim 24 is characterized in that, also comprises:
Resolution unit with said media slicing data packet, resolves to the frame of video of medium;
Broadcast unit is play the frame of video of said medium.
26. the device of receiving media according to claim 24 is characterized in that, also comprises:
Preserve the unit, preserve said media slicing data packet.
27. the system of a transmission medium is characterized in that, comprising:
The medium transmitting terminal obtains media slicing data packet, and said packet carries the transmission information of packet; Obtain the video frame distribution information of media slicing; According to said video frame distribution information, the transmission of control media slicing data packet;
Media receiving end, the video frame distribution information of receiving media burst, according to said video frame distribution information, the reception of control media slicing data packet;
Said video frame distribution information is represented, the corresponding relation between the transmission information that the frame of video of media slicing and media slicing data packet are carried;
The reception of said media receiving end control media slicing data packet is specially:
According to the sequence number of the packet of the media services that receive, search the sequence number of the packet of losing; According to video frame distribution information, judge the affiliated frame type of losing of packet; According to the frame type under the packet of losing, send the repeat requests of corresponding data bag;
The transmission of said medium transmitting terminal control media slicing data packet is specially:
Be used to receive the repeat requests of corresponding data bag; Send the corresponding data bag of said re-transmission.
28. the system of transmission medium according to claim 27 is characterized in that,
The transmission of said medium transmitting terminal control media slicing data packet is specially: the media location information of the service of accepting request; According to said video frame distribution information, search after the corresponding packet of said media location information the initial data bag of next I frame; The initial data packet start of the next I frame after the corresponding packet of locating information provides media services;
The reception of said media receiving end control media slicing data packet is specially: the media play zero-time of obtaining the request service; According to said video frame distribution information, the corresponding locating information of media play zero-time of search request service; During the request service, send the corresponding locating information of media play zero-time of request service; The initial data packet start of the next I frame after the corresponding packet of said locating information is accepted media services.
29. the system of transmission medium according to claim 27 is characterized in that,
The transmission of said medium transmitting terminal control media slicing data packet is specially:
The medium transmitting terminal is judged the frame type that media slicing data packet is corresponding according to said video frame distribution information; The frame type corresponding according to media slicing data packet, the priority of the said media slicing data packet of mark; Media slicing data packet behind the transmission mark priority information;
The transmission of said medium transmitting terminal control media slicing data packet is specially:
Media receiving end receives the media slicing data packet behind the mark priority information; When sending the media slicing data packet behind the said mark priority information, carry out service quality control.
30. the system of transmission medium according to claim 27 is characterized in that,
Said medium transmitting terminal is personal computer, mobile phone, personal digital assistant, server, network-caching equipment;
Said media receiving end is personal computer, mobile phone, personal digital assistant, network-caching equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101346872A CN101651826B (en) | 2008-08-15 | 2008-08-15 | Method and device for sending and receiving media and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101346872A CN101651826B (en) | 2008-08-15 | 2008-08-15 | Method and device for sending and receiving media and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101651826A CN101651826A (en) | 2010-02-17 |
| CN101651826B true CN101651826B (en) | 2012-08-08 |
Family
ID=41673911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101346872A Active CN101651826B (en) | 2008-08-15 | 2008-08-15 | Method and device for sending and receiving media and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101651826B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3633997A4 (en) * | 2017-06-27 | 2020-12-02 | Huawei Technologies Co., Ltd. | Method, apparatus and system for video transmission |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102130821A (en) * | 2010-08-11 | 2011-07-20 | 华为技术有限公司 | Method and system for processing packet loss in international protocol television (IPTV) system as well as server |
| CN101977300B (en) * | 2010-11-11 | 2014-11-05 | 浙江宇视科技有限公司 | Video-on-demand realizing method and device |
| CN102547376B (en) * | 2010-12-28 | 2014-08-06 | 中国移动通信集团公司 | Video data transmission method, device and system |
| CN102821311B (en) * | 2012-05-30 | 2015-07-15 | 浙江宇视科技有限公司 | Video data packet priority setting method and device |
| CN104427331B (en) * | 2013-08-28 | 2017-12-01 | 华为技术有限公司 | A kind of video traffic processing method, device and the network equipment |
| CN103714142A (en) * | 2013-12-25 | 2014-04-09 | 乐视网信息技术（北京）股份有限公司 | Data search method and device |
| CN104253762B (en) * | 2014-09-22 | 2018-01-23 | 广州华多网络科技有限公司 | The method and device of concurrent processing |
| CN108243073B (en) * | 2016-12-27 | 2021-07-30 | 富士通株式会社 | Data transmission method and device |
| CN108337574A (en) * | 2017-01-20 | 2018-07-27 | 中兴通讯股份有限公司 | A kind of flow-medium transmission method and device, system, server, terminal |
| CN107277423B (en) * | 2017-07-28 | 2020-10-09 | 北京小米移动软件有限公司 | Method and device for packet loss retransmission |
| CN108174239A (en) * | 2017-12-04 | 2018-06-15 | 中国联合网络通信集团有限公司 | A kind of video transmission method and equipment |
| CN110545492B (en) * | 2018-09-05 | 2020-07-31 | 北京开广信息技术有限公司 | Real-time delivery method and server of media stream |
| CN117082038A (en) * | 2020-10-30 | 2023-11-17 | 华为技术有限公司 | Method and communication device for transmitting data packets of a media stream |
| CN114640711B (en) * | 2020-12-15 | 2023-08-01 | 深圳Tcl新技术有限公司 | TLV data packet pushing method, intelligent terminal and storage medium |
-
2008
- 2008-08-15 CN CN2008101346872A patent/CN101651826B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3633997A4 (en) * | 2017-06-27 | 2020-12-02 | Huawei Technologies Co., Ltd. | Method, apparatus and system for video transmission |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101651826A (en) | 2010-02-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101651826B (en) | Method and device for sending and receiving media and system | |
| CN102232298B (en) | Method, device and system for transmitting and processing media content | |
| US7903648B2 (en) | Method and apparatus for injecting information assets into a content stream | |
| CN100426865C (en) | Apparatus and method for adaptively controlling buffering amount according to content attribute in receiving audio-video data | |
| US7587507B2 (en) | Media recording functions in a streaming media server | |
| US8572670B2 (en) | Video distribution device, video distribution system, and video distribution method | |
| EP3065414B1 (en) | Transmission device, transmission method, reception device, and reception method | |
| WO2012033766A1 (en) | Method and apparatus for adaptive bit rate switching | |
| EP2627082A2 (en) | Method for transmitting a scalable http stream for natural reproduction upon the occurrence of expression-switching during http streaming | |
| CN111447503A (en) | Viewpoint switching method, server and system for multi-viewpoint video | |
| CN102469346B (en) | Method and system for generating interactive film played at one-way digital television receiving terminal | |
| JP4998775B2 (en) | Information distribution system and method, information distribution apparatus, receiving terminal, and information relay apparatus | |
| WO2013185547A1 (en) | Caching server service method, caching server and system thereof | |
| CN100544437C (en) | A kind of bandwidth adapting system of streaming media | |
| CN101729855B (en) | Method of transmission of a digital content stream and corresponding method of reception | |
| US20010021999A1 (en) | Method and device for transmitting data units of a data stream | |
| KR101670821B1 (en) | Method and apparatus for distributing a multimedia content | |
| JP4340084B2 (en) | Transmitting apparatus and transmitting method | |
| WO2014036873A1 (en) | Method for sharing transport stream | |
| CN102740131A (en) | Real-time transport protocol-based network television direct transmission method and system | |
| KR101244551B1 (en) | Broadcasting system for http streaming video service over digital multimedia broadcasting | |
| CN113132806B (en) | Playing terminal and program playing method thereof | |
| EA004380B1 (en) | Universal digital broadcast system and methods | |
| CA2306524A1 (en) | A system and method for enhanced streaming media viewing | |
| KR20050074667A (en) | Real-time multimedia streaming server/client with multi-channel and camera control using personal digital agency(pda) on the wireless internet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201203 Address after: Building 2, No. 3, Fuqian Road, Hailing District, Taizhou City, Jiangsu Province Patentee after: Taizhou Haitong Asset Management Co.,Ltd. Address before: Unit 2414-2416, main building, no.371, Wushan Road, Tianhe District, Guangzhou City, Guangdong Province Patentee before: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Effective date of registration: 20201203 Address after: Unit 2414-2416, main building, no.371, Wushan Road, Tianhe District, Guangzhou City, Guangdong Province Patentee after: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Address before: 518129 headquarters building of Bantian HUAWEI base, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |
|
| TR01 | Transfer of patent right |