CN107147923B - A kind of time shift order method - Google Patents
A kind of time shift order method Download PDFInfo
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- CN107147923B CN107147923B CN201710311622.XA CN201710311622A CN107147923B CN 107147923 B CN107147923 B CN 107147923B CN 201710311622 A CN201710311622 A CN 201710311622A CN 107147923 B CN107147923 B CN 107147923B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2387—Stream processing in response to a playback request from an end-user, e.g. for trick-play
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/239—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests
- H04N21/2393—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests involving handling client requests
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4333—Processing operations in response to a pause request
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4334—Recording operations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/64—Addressing
- H04N21/6405—Multicasting
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/65—Transmission of management data between client and server
- H04N21/658—Transmission by the client directed to the server
- H04N21/6587—Control parameters, e.g. trick play commands, viewpoint selection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
- H04N21/8547—Content authoring involving timestamps for synchronizing content
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The present invention relates to a kind of time shift order methods, when user terminal carries out pausing operation, server continues to send the multicast packet in preset time period to user terminal, rather than stops multicast packet at once and send, and lapse data channel is established, avoid the problem that user suspends and waste bandwidth for a long time；After restarting play operation triggering, what is transferred is the temporary file being locally stored, and response is fast, without waiting, receives time-shifting files data packet while playing temporary file, separately plays seamless connection, and another user has preferably user experience.
Description
Technical field
The invention belongs to field of communication technology, in particular to a kind of time shift order method.
Background technique
Currently, in internet television (Internet ProtoCol Television, abbreviation IPTV) and video on demand
In solutions relevant to video playing such as (Video on Demand, abbreviation VOD), time-moving television (TSTV) business is one
The important form of service of kind.Using TSTV business, when user watches live television programming, realize pause to program, after
Move back operation, and can when shifting state under operations be broadcast live etc. by F.F., switchback be switched to live state, thoroughly overturned original
The mode for seeing TV brings completely new viewing experience to spectators.In time-shifted television system, there are two shapes for user's watching process
State, unicast state and multicast state receive data by multicast or broadcast channel when user watches live television programming
Stream, multiple users share same channel by broadcast technology, when user selects certain interactive operations such as, after pause and continue to play
When program, user interacts signaling with time-moving television server at this time, establishes lapse data channel, and user is switched to from multicast channel
Independent unicast tunnel in list/multicast handoff procedure, needs to realize as far as possible quickly seamless to improve user experience
Switching.
" a kind of IPTV terminal multicast turn unicast handover method " disclosed in Chinese patent CN101616060, this method
IPTV terminal receives after multicast turns unicast instruction, first establishes unicast channel, and unicast channel exits multicast again after being successfully established, and to
Unicast number play time corresponding to the RTP data packet time stamp that streaming media server request is finally received since multicast channel
According to, when receiving the RTP data packet of unicast channel, further according to record multicast channel finally receive RTP data packet time stamp and
Number, and the newest time stamp for receiving RTP data packet and number of record, are filtered the RTP data packet received.Using this
The IPTV terminal multicast that invention proposes turns unicast handover method, first establishes unicast channel, unicast channel exits again after being successfully established
Multicast better assures that the continuity of video；But if user by pause trigger unicast instruction, and for a long time into
Row pausing operation continues to carry out sending multicast packet to terminal to be clearly the resource wave being not necessarily to during the pause of this section
Take, and just establish unicast channel in pause initial time, is then log out multicast, occupies waste of the unicast channel to bandwidth for a long time
It is even more serious；If suspending backed off after random multicast, start the foundation for carrying out unicast channel, service at the time point that user restores to play
Device obtains time out information, and transmits time-shifting files, will necessarily bring certain waiting time to user, generate poor use
Family experience.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of time shift order method, concrete scheme is as follows:
A kind of time shift order method, following steps:
S1: user terminal receives the pausing operation of user, records time point T1, sends pause instruction to time-shifted service device；
S2: time-shifted service device receives pause instruction, continues the time that current point in time T1 to T1+ Δ Ta is sent to user terminal
Multicast packet in section, and stop sending multicast packet on T1+ Δ Ta time point and exit multicast；
S3: user terminal receives multicast packet in the period of T1 to T1+ Δ Ta, forms temporary file and stores to storage list
Member；
S4: after user terminal listens to recovery play command, recording time point T2, transfer the temporary file in storage unit,
It plays out after decoding, while being communicated with server, lapse data channel instruction is established in transmission；
S5: server establishes lapse data channel, the time-shifting files data packet after sending T1 time point to user terminal；
S6: when user terminal, which plays program progress, stabs node to time-shifting files packet time, by time-shifting files data packet
It is decoded broadcasting, starts to play time-shifting files.
Further, step S6 is mainly made of following steps；
S601: user terminal receives time-shifting files data packet, and records the timestamp information Tx of current time-shifting files data packet
The timestamp information Tx-1 that file data packet was moved with upper a period of time, judges the size of Tx Yu T1+ Δ Ta；
S602: when judging result is that Tx is less than T1+ Δ Ta, file data packet is moved for the moment in discarding, repeats S601；
S603: when judging result is that Tx is equal to T1+ Δ Ta, file data packet is moved for the moment in discarding, and start to save and work as
Preceding and later time-shifting files data carry out S606 step；
S604: when judging result is that Tx is greater than T1+ Δ Ta, the time shift number of text move of upper a period of time number of packages accordingly and later is saved
According to file；Carry out S606 step；
S606: when user terminal was played to Tx or Tx-1 time point, time-shifting files data packet is decoded broadcasting.
Further, method further include:
S605: when judging result is that Tx is greater than T1+ Δ Ta, the size of Tx-1 and T1+ Δ Ta is judged, judgement is worked as
When being as a result greater than T1+ Δ Ta for Tx-1；Carry out S607 step；
S607: it reports an error to time-shifted service device.
Further, moved at that time after file data packet is decoded broadcasting, the time-shifting files data packet received not into
Row S601-S605 step, directly progress S606 operation.I.e. after starting to play time-shifting files, subsequently received time-shifting files
Data packet will directly be played without carrying out judgement operation.
Further, when T2 is less than T1+ Δ Ta, the step of without S601-S605, S606 operation is directly carried out,
It is small to when being less than Δ Ta i.e. when the pause of user and time interval between replaying are very small, time shift channel is established, transmission
Time-shifting files, user terminal receives time-shifting files data packet and directly plays out, and without being judged, while suspending multicast i.e.
It can.
Further, after shifting file data packet is decoded broadcasting at that time, time-shifted service device stops sending multicast packet.
Further, time shift order method further includes following steps:
S100: the time difference Δ Tb of T2 and T1 is calculated；
S101: judging Δ Tb and preset time difference DELTA Tc size, when Δ Tb is greater than Δ Tc, repeats S101 step；It is no
Then start S102 step:
S102: the time Δ Td that start recording persistently plays；
S103: Δ Td and preset time period Δ Te are compared, and when comparing result is that Δ Td is not less than Δ Te, are executed
S104 step, otherwise repeatedly S103 step；
S104: being played automatically with fast forward speed, when the time-shifting files of broadcasting pull up to group broadcasting program, is switched to multicast shape
State；
S105: lapse data channel is closed.
Preferably, the F.F. multiple of fast forward speed is calculated by Δ Tb.
Preferably, method further includes step S0: the time of synchronous time-shifted service device and user terminal.
Time shift order method provided by the invention, when user terminal carries out pausing operation, server continues to send out to user terminal
The multicast packet in preset time period is sent, rather than stops multicast packet at once and sends, and establish lapse data channel, is avoided
User's pause for a long time and the problem of waste bandwidth；After restarting play operation triggering, transfer be locally stored it is temporary
File, response is fast, without waiting, receives time-shifting files data packet while playing temporary file, separately plays seamless connection,
Another user has preferably user experience.
Detailed description of the invention
The flow chart of 1 time shift order method of Fig. 1 embodiment；
The flow chart of 2 time shift order method of Fig. 2 embodiment；
The partial process view of 3 time shift order method of Fig. 3 embodiment.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples, and the following example is for explaining only the invention
Summary of the invention, be not intended to limit the scope of the invention.
Time shift order method provided by the present invention, it is not intended that the time difference problem of server and user terminal, service
The time synchronization problem of device and user terminal can be easy to solve, therefore the present invention is not further described.In order to be better understood by
The contents of the present invention are explained as follows part-time mark, user terminal local zone time when T1 is pause, while being also that live streaming is temporary
The playback progress in stopping time, and after re-starting broadcasting, the initial time stamp that time-shifting files are sent；T1+ Δ Ta is local zone time
Value, and exit multicast time purpose playback progress value；Tx be time-shifting files data packet timestamp information, with play time without
It closes；T2 is the local time value for restoring play command.
Embodiment 1
As shown in Figure 1, a kind of time shift order method, includes the following steps:
S1: it assuming that user watches " names of the people " program in live streaming, and in 8:00 (T1) Zhong Jinhang pausing operation, uses
Family end receives the pausing operation of user, records time point T1, sends pause instruction to time-shifted service device；
S2: time-shifted service device receives pause instruction, continues to send live data to user terminal to 8:01, and in the 8:01 time
Stop sending multicast packet on point and exits multicast；
S3: the group broadcasting program content of 8:00 to 8:01 is formed temporary file and stored to storage unit by user terminal；
S4: user restores play command after user terminal listens to recovery play command in 9:00 clock and records time point T2
(9:00) transfers the temporary file in storage unit, plays out after decoding, while being communicated with server, sends and establishes
Lapse data channel instruction；
S5: server establishes lapse data channel, sends the time-shifting files number of T1 (8:00) after time point to user terminal
According to packet；
S6: when user terminal, which plays program progress, stabs node to time-shifting files packet time, by time-shifting files data packet
It is decoded broadcasting, starts to play time-shifting files.
Time shift order method provided by the present embodiment, when user terminal carries out pausing operation, server continues to user
End sends the multicast packet in preset time period, rather than stops multicast packet at once and send, and establish lapse data channel,
Avoid the problem that user suspends and waste bandwidth for a long time；After restarting play operation triggering, is communicated, built with server
Data channel is moved immediately, and server inquires time-shifting files data after T1 time point, is packaged and delivered to user terminal, this process one
As need the regular hour, can make to play has of short duration Caton pause, but the user terminal of the present embodiment transfer be locally stored it is temporary
File is deposited, response is fast, without waiting, receives time-shifting files data packet while playing temporary file, can make to play seamless
Linking, another user have preferably user experience.
Embodiment 2
The time shift order method of the present embodiment, the difference from embodiment 1 is that, as shown in Fig. 2, further limiting, step
S6 is mainly made of following steps；
S601: user terminal receives time-shifting files data packet, and records the timestamp information Tx of current time-shifting files data packet
The timestamp information Tx-1 that file data packet was moved with upper a period of time, judges the size of Tx Yu T1+ Δ Ta；
S602: when judging result is that Tx is less than T1+ Δ Ta, file data packet is moved for the moment in discarding, repeats S601；
S603: when judging result is that Tx is equal to T1+ Δ Ta, file data packet is moved for the moment in discarding, and start to save and work as
Preceding and later time-shifting files data carry out S606 step；
S604: when judging result is that Tx is greater than T1+ Δ Ta, the time shift number of text move of upper a period of time number of packages accordingly and later is saved
According to file；S606 step is carried out, S605 step is then carried out；
S606: when user terminal was played to Tx or Tx-1 time point, time-shifting files data packet is decoded broadcasting；
S605: judging the size of Tx-1 and T1+ Δ Ta, when judging result is that Tx-1 is greater than T1+ Δ Ta, carries out
S607 step；
S607: it reports an error to time-shifted service device.
Time shift order method provided by the present invention, when user terminal carries out pausing operation, server continues to user terminal
The multicast packet in preset time period is sent, in pausing operation triggering, user terminal carries out pause broadcasting, and it is single to start storage
Member stores multicast packet, when replaying operation triggering, establishes lapse data channel to server transmission immediately
Instruction, while adjusting and the temporal data of user terminal storage unit gone to play out, when the foundation of time shift data channel finishes, and receive
When the difference of the timestamp information TX and T1 of the time-shifting files data packet arrived are not less than Δ Ta, start to play time-shifting files, then
Delete the temporary file in storage unit, releasing memory.Therefore the time shift order method of the present embodiment, builds on most appropriate opportunity
The lapse data channel of vertical unicast, neither can long time no operations occupancy lapse data channel, cause wasting for bandwidth,
Poor viewing experience will not be brought to user due to lapse data Path Setup process, seamlessly transit the conversion of unicast.
Embodiment 3
The time shift order method of the present embodiment, the difference from embodiment 1 is that, as shown in figure 3, further limiting, time shift
Order method further includes following steps after S6 step:
S100: the time difference Δ Tb of T2 and T1 is calculated；
S101: judging Δ Tb and preset time difference DELTA Tc size, when Δ Tb is greater than Δ Tc, repeats S101 step；It is no
Then start S102 step:
S102: the time Δ Td that start recording persistently plays；
S103: Δ Td and preset time period Δ Te are compared, and when comparing result is that Δ Td is not less than Δ Te, are executed
S104 step, otherwise repeatedly S103 step；
S104: being played automatically with fast forward speed, when the time-shifting files of broadcasting pull up to group broadcasting program, is switched to multicast shape
State；
S105: lapse data channel is closed.
Wherein, the F.F. multiple of fast forward speed is calculated by Δ Tb.
Time shift order method provided in this embodiment, the difference of the program progress of program progress and live streaming to current unicast
Judged, it is smaller when determining difference, and a period of time has persistently been played, other operations are not carried out, illustrate that user is holding
Continuous viewing program, and the demand without advancing or retreating, but due to the live streaming of user's current unicast program and current multicast
Program differs very little, then occupies unicast always and play out, more serious to bandwidth waste, therefore opens automatically fast forward operation,
Suitable F.F. multiple is calculated according to difference, while the plot for not influencing user understands, utilizes the F.F. of a period of time
Live streaming progress is pulled up to, multicast is added, continues to watch program, saves resource, avoids the generation of unexpected bad experience.
Claims (5)
1. a kind of time shift order method, which comprises the steps of:
S1: user terminal receives the pausing operation of user, records time point T1, sends pause instruction to time-shifted service device；
S2: time-shifted service device receives pause instruction, continues into the period that user terminal sends current point in time T1 to T1+ Δ Ta
Multicast packet, and stop sending multicast packet on T1+ Δ Ta time point and exit multicast；
S3: user terminal receives multicast packet in the period of T1 to T1+ Δ Ta, forms temporary file and stores to storage unit；
S4: after user terminal listens to recovery play command, time point T2 is recorded, the temporary file in storage unit is transferred, decoded
After play out, while being communicated with server, lapse data channel instruction is established in transmission；
S5: server establishes lapse data channel, the time-shifting files data packet after sending T1 time point to user terminal；
S6: when user terminal, which plays program progress, stabs node to time-shifting files packet time, time-shifting files data packet is carried out
Decoding plays, and starts to play time-shifting files；
The step S6 is mainly made of following steps；
S601: user terminal receives time-shifting files data packet, and records the timestamp information Tx of current time-shifting files data packet and upper
The timestamp information Tx-1 for moving file data packet for the moment, judges the size of Tx Yu T1+ Δ Ta；
S602: when judging result is that Tx is less than T1+ Δ Ta, file data packet is moved for the moment in discarding, repeats S601；
S603: when judging result is that Tx is equal to T1+ Δ Ta, discardings is upper to move file data packet for the moment, and start preservation currently and
Later time-shifting files data carry out S606 step；
S604: when judging result is that Tx is greater than T1+ Δ Ta, the lapse data text of text move of upper a period of time number of packages accordingly and later is saved
Part；Carry out S606 step；
S606: when user terminal was played to Tx or Tx-1 time point, time-shifting files data packet is decoded broadcasting.
2. time shift order method as described in claim 1, which is characterized in that the method also includes:
S605: when judging result is that Tx is greater than T1+ Δ Ta, the size of Tx-1 and T1+ Δ Ta is judged, judging result is worked as
When being greater than T1+ Δ Ta for Tx-1；Carry out S607 step；
S607: it reports an error to time-shifted service device.
3. time shift order method as claimed in claim 2, which is characterized in that moved file data packet at that time and be decoded broadcasting
Afterwards, the time-shifting files data packet received is without S601-S605 step, directly progress S606 operation.
4. time shift order method as claimed in claim 2, which is characterized in that when T2 is less than T1+ Δ Ta, without S601-
The step of S605, directly progress S606 operation.
5. time shift order method as claimed in claim 4, which is characterized in that moved file data packet at that time and be decoded broadcasting
Afterwards, time-shifted service device stops sending multicast packet.
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| CN110213308A (en) * | 2018-02-28 | 2019-09-06 | 杭州海康威视数字技术股份有限公司 | A kind of method and device of decoding video data |
| CN115209226A (en) * | 2022-06-13 | 2022-10-18 | 海南乾唐视联信息技术有限公司 | Play skip processing method and device, electronic equipment and medium |
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Denomination of invention: A time shift VOD method Effective date of registration: 20210622 Granted publication date: 20190621 Pledgee: Beijing culture science and technology financing Company limited by guarantee Pledgor: CBC CLOUD TECHNOLOGY Co.,Ltd. Registration number: Y2021980005035 |