CN107277580A - A kind of method that the TV programme to be played back are cached on mobile phone - Google Patents
A kind of method that the TV programme to be played back are cached on mobile phone Download PDFInfo
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- CN107277580A CN107277580A CN201710374074.5A CN201710374074A CN107277580A CN 107277580 A CN107277580 A CN 107277580A CN 201710374074 A CN201710374074 A CN 201710374074A CN 107277580 A CN107277580 A CN 107277580A
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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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4126—The peripheral being portable, e.g. PDAs or mobile phones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/7243—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages
- H04M1/72439—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages for image or video messaging
-
- 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
- H04N21/4331—Caching operations, e.g. of an advertisement for later insertion during playback
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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]
- H04N21/40—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
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/43615—Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals
-
- 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
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
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- Multimedia (AREA)
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- Business, Economics & Management (AREA)
- General Business, Economics & Management (AREA)
- Human Computer Interaction (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention provides a kind of method that the TV programme to be played back are cached on mobile phone, set top box and mobile phone are set up radio communication by this method, mobile phone sends playback request, the frame of video for the TV programme that set top box will be played back is associated with its timeline, form timeline interface and be sent to mobile phone, mobile phone shows the timeline interface, and according to oneself frame of video interested, by inputting two time point selection video segments to be played back, the period inputted according to mobile phone is intercepted video segment by set top box, and dividing processing is carried out to video segment, simultaneously according to the network speed of mobile phone, judgement is sent to the video file of mobile phone, mobile phone is cached, then the playback speed of the video segment is controlled again by mobile phone, this method uses cooperatively mobile phone and set top box, it is not only able to be accurately positioned the video segment to be played back, and it ensure that the fluency of whole replayed section.
Description
Technical field
It is more particularly to a kind of that the TV programme to be played back are cached on mobile phone the invention belongs to TV programme playback field
Method.
Background technology
User is when watching TV programme, such as viewing TV play, film or ball match, it is central between insertion advertisement or work as
When preceding user loses interest in current video segment, user either zapping or is returned to the TV programme watched before
Put, it is uncertain accurately to determine, it is necessary to carry out cumbersome operation using remote control during the TV programme seen before playback
Video segment of the position to desired viewing, it is desirable to accurately find the video segment of playback, it is necessary to constantly pin remote control, and also
By prolonged inquiry, the video segment for wanting playback can be found, this brings trouble to the video playback of user, drop
The playback experience sense of low user, in order to solve the above-mentioned technical problem, CN104380380 disclose a kind of video editing method and its
Digital device, this method is by selected playback duration section, and user can adjust what is played back during the default playback duration
The frame number of one local sequence, and thus adjust the playback speed of the local sequence of correspondence, this method can select playback duration section and
Playback rate is controlled, but this method is the video for controlling caching in mobile phone the problem of exist, it is impossible to the TV for needing to play back
Program carries out playback controls.
The content of the invention
In order to solve problems of the prior art, the TV to be played back is cached on mobile phone the invention provides a kind of
The method of program.This method uses cooperatively mobile phone and set top box, is not only able to be accurately positioned the video segment to be played back, and
It ensure that whole replayed section is smooth, and which section piece of video is the file type that user can also transmit according to set top box judge
Section can carry out fast-forward play, and which section video should be played according to normal speed, improve the whole structure of user's viewing.
Concrete technical scheme of the present invention is as follows：
The present invention provides a kind of method that the TV programme to be played back are cached on mobile phone, and this method comprises the following steps：
S1：Mobile phone sets up wireless communication with set top box；
S2：Receiving in the playback request that mobile phone is sent, the playback request includes playback television programme title and television channel；
S3：The corresponding video of TV programme of request is transferred out of set top box, and making is carried and each frame of video of the video
The corresponding timeline interface of sequence, is sent to mobile phone and is shown；
S4：Receive first time point T1 and the second time point T2 that mobile phone is inputted on timeline interface；
S5：The video segment between first time point T1 and the second time point T2 is isolated from the video of TV programme,
Video segment is subjected to dividing processing, and the video file to be sent is judged according to mobile phone network speed；
S6：Mobile phone is received after the video file sent, is cached and is played.
Further to improve, step S50 includes：
S51：The duration C, C=for the video segment that computation requests are paid a return visit | T1-T2 |, and be compared with duration threshold value C1,
As C≤C1, step S52 is carried out；
S52：Collect since the video for having common factor in the t periods the time point for receiving playback request with T1 to the T2 periods
The playback beginning and ending time of fragment；
S53：Calculate the common factor of T1 to T2 periods and playback beginning and ending time, the corresponding time point T3 and T4 of record common factor；
S54：As T1=T3, T2=T4, step S55 is carried out；
S55：By the corresponding video segment of the duration into two layers of file, based on layer and enhancement layer, and by basal layer
Section Td is split to schedule with enhancement layer, and mutually corresponding sub- basal layer and sub- enhancement layer will be obtained after segmentation and is assigned
Identical and unique timestamp.
Further to improve, step S50 also includes：
S56：As T1=T3, T2 ≠ T4, or when T1 ≠ T3, T2=T4, judge that T3 or T4 time points corresponding frame of video is
No is I frames, if it is not, finding T3 time points latter nearest I frames or T4 time points previous nearest I frames, carries out step
S57, if it is, carrying out step S57；
S57：Whether to its previous I frame be similar frame, if similar frame, continue to look for if judging the I frames, until finding and it
Dissimilar I frames, record the corresponding time point T ' of previous I frames；
S58：T1, T2 period corresponding video segment are cut into 2 sub- video segments from time point T ' punishment.
Further to improve, step S50 also includes：
S59：As T1 ≠ T3, T2 ≠ T4, whether be I frame, if not if judging T3 and T4 time points corresponding frame of video respectively
It is to find T3 time points previous nearest I frames and T4 time points latter nearest I frames, continues step S510, if it is, carries out
Step S510；
S510：Whether to its previous I frame, latter I frame be similar frame, if similar frame if judging two I frames respectively, is continued
Look for, until finding the I frame dissimilar with it, record the corresponding time point T5 and T6 of two I frames found；
S511：T1, T2 period corresponding video segment are cut into 3 sub- video segments from time point T5 and T6 punishment.
Further to improve, step S50 also includes：
S512：The sub-video fragment of acquisition is subjected to dividing processing again, two layers be made up of basal layer and enhancement layer is obtained
File；
S513：Judge video segment may be viewed by value H, and is compared with looking value threshold value H1, as H ＜ H1, be walked
Rapid S514；
S514：Judge whether the basal layer file one by the enhancement layer files of next sub-video fragment and the sub-video fragment
It is same to be sent to mobile phone.
Further to improve, step S5 also includes：
S515：In predetermined amount of time Td the video data bag containing basal layer and enhancement layer is sent to mobile phone；
S516：Calculate the number M of the total video packet sent in Td；
S517：Calculate the time Tm used in mobile phone M video data bag of broadcasting；.
Further to improve, step S5 also includes：
S518：Tm is compared with Td, as Tm ＞ Td, by the step S55 basal layers obtained and sub- enhancement layer files
And the basal layer and enhancement layer files that step S512 is obtained during H >=H1 carry out step S519, as Tm≤Td, by step during H >=H1
The sub- basal layer and sub- enhancement layer that the basal layer and enhancement layer files and step S55 that S512 is obtained are obtained carry out step S520；
S519：Basal layer file in predetermined amount of time is sent to mobile phone, and the moment in the predetermined amount of time to sending
Video data bag carry out step S516-S517, when judging Tm≤Td, carry out step S521；
S520：Calculate time difference △ T, △ T=Td-Tm, and △ T be compared with time difference threshold value △ T1, when △ T≤
△ T1, carry out step S521, as △ T ＞ △ T1, carry out step S522；
S521：Basal layer and enhancement layer files superposition are sent to mobile phone；
S522：By basal layer and enhancement layer files superposition and together by the enhancement layer files of latter time period adjacent thereto
It is sent to mobile phone.
Further to improve, step S5 also includes：
S523：The number M2 of the video data bag of the basal layer file of calculation procedure S514 mobile phones to be sent to, works as step
S518 judges Tm≤Td, calculates M2 and M size, if M2 ＜ M, the enhancement layer files of latter sub-video fragment and the son are regarded
The basal layer file of frequency fragment is together sent to mobile phone, if M2 >=M, is only sent to the basal layer file of the sub-video fragment
Mobile phone.
Further to improve, step S5 also includes：
S524：When step S51 judges C ＞ C1, the I frames in first time point T1 to the second period at time point T2 are extracted,
And judge whether n-th I frames and the N+1 I frame similar, and N >=1, N represents the number of I frames, if similar, by n-th I frames and
The N+1 I frame is put into identical memory block, otherwise, and n-th I frames and the N+1 I frame are respectively put into different memory blocks
It is interior, and each memory block is numbered, and corresponding video segment in each memory block is subjected to step S513.
It is further to improve, it may be viewed by value H and calculate by the following method to obtain：
Wherein, x, k, z, w represent coefficient, and usual value is 0-1, and Y represents the return visit number of times of this section of video, and Q represents the section
The thumb up number of video, G represents the F.F. number of times of this section of video, and S represents the return visit total duration of this section of video, and P represents this section of video
The playing duration of corresponding TV programme.
Beneficial effects of the present invention are as follows：
The invention provides a kind of method that the TV programme to be played back are cached on mobile phone, this method is by set top box and hand
Machine sets up radio communication, while mobile phone sends playback request, the frame of video for the TV programme that set top box will be played back and its time
Line is associated, and is formed timeline interface and is sent to mobile phone, and mobile phone shows the timeline interface, and interested is regarded according to oneself
Frequency frame, by inputting two time point selection video segments to be played back, set top box intercepts the period inputted according to mobile phone
Video segment, and dividing processing is carried out to video segment, while according to the network speed of mobile phone, judging to be sent to the video text of mobile phone
Part, mobile phone is cached, and then controls the playback speed of the video segment again by mobile phone, and this method matches somebody with somebody mobile phone and set top box
Conjunction is used, and is not only able to be accurately positioned the video segment to be played back, and ensure that the fluency of whole replayed section, user
The file type that can also be transmitted according to set top box judges which section video segment can carry out fast-forward play, and which section video should be by
Played according to normal speed, improve the whole structure of user's viewing.
Brief description of the drawings
Fig. 1 is a kind of flow chart for the method that the TV programme to be played back are cached on mobile phone of embodiment 1；
Fig. 2 is the flow chart of step S51-S55, S515-S522 of embodiment 2；
Fig. 3 is embodiment 3 step S56-S514, S518, S523 flow chart；
Fig. 4 is the step S5 of embodiment 4 flow chart.
Embodiment
The present invention is described in further detail with following examples below in conjunction with the accompanying drawings.
Embodiment 1
The embodiment of the present invention 1 provides a kind of method that the TV programme to be played back are cached on mobile phone, as shown in figure 1, should
Method comprises the following steps：
S1：Mobile phone sets up wireless communication with set top box；
S2：Receiving in the playback request that mobile phone is sent, the playback request includes playback television programme title and television channel；
S3：The corresponding video of TV programme of request is transferred out of set top box, and making is carried and each frame of video of the video
The corresponding timeline interface of sequence, is sent to mobile phone and is shown；
S4：Receive first time point T1 and the second time point T2 that mobile phone is inputted on timeline interface；
S5：The video segment between first time point T1 and the second time point T2 is isolated from the video of TV programme,
Video segment is subjected to dividing processing, and the video file to be sent is judged according to mobile phone network speed；
S6：Mobile phone is received after the video file sent, is cached and is played.
The invention provides a kind of method that the TV programme to be played back are cached on mobile phone, this method is by set top box and hand
Machine sets up radio communication, while mobile phone sends playback request, the frame of video for the TV programme that set top box will be played back and its time
Line is associated, and is formed timeline interface and is sent to mobile phone, and mobile phone shows the timeline interface, and interested is regarded according to oneself
Frequency frame, by inputting two time point selection video segments to be played back, set top box intercepts the period inputted according to mobile phone
Video segment, and dividing processing is carried out to video segment, while according to the network speed of mobile phone, judging to be sent to the video text of mobile phone
Part, mobile phone is cached, and then controls the playback speed of the video segment again by mobile phone, and this method matches somebody with somebody mobile phone and set top box
Conjunction is used, and is not only able to be accurately positioned the video segment to be played back, and ensure that the fluency of whole replayed section, user
The file type that can also be transmitted according to set top box judges which section video segment can carry out fast-forward play, and which section video should be by
Played according to normal speed, improve the whole structure of user's viewing.
Embodiment 2
The embodiment of the present invention 2 provides a kind of method that the TV programme to be played back are cached on mobile phone, and this method is with implementing
Example 1 it is essentially identical, unlike, as shown in Fig. 2 step S5 includes：
S51：The duration C, C=for the video segment that computation requests are paid a return visit | T1-T2 |, and be compared with duration threshold value C1,
As C≤C1, step S52 is carried out；
S52：Collect since the video for having common factor in the t periods the time point for receiving playback request with T1 to the T2 periods
The playback beginning and ending time of fragment；
S53：Calculate the common factor of T1 to T2 periods and playback beginning and ending time, the corresponding time point T3 and T4 of record common factor；
S54：As T1=T3, T2=T4, step S55 is carried out；
S55：By the corresponding video segment of the duration into two layers of file, based on layer and enhancement layer, and by basal layer
Section Td is split to schedule with enhancement layer files, mutually corresponding sub- basal layer and sub- enhancement layer will be obtained after segmentation
Assign identical and unique timestamp；
S515：In predetermined amount of time Td the video data bag containing basal layer and enhancement layer is sent to mobile phone；
S516：Calculate the number M of the total video packet sent in Td；
S517：Calculate the time Tm used in mobile phone M video data bag of broadcasting；
S518：And be compared Tm with Td, as Tm ＞ Td, by the step S55 basal layers obtained and sub- enhancement layer text
Part carries out step S519, and as Tm≤Td, the step S55 basal layers obtained and sub- enhancement layer are carried out into step S520；
S519：Basal layer file in predetermined amount of time is sent to mobile phone, and the moment in the predetermined amount of time to sending
Video data bag carry out step S516-S517, when judging Tm≤Td, carry out step S521；
S520：Calculate time difference △ T, △ T=Td-Tm, and by △ T and time difference threshold value △ T1 be compared when △ T≤
△ T1, carry out step S521, as △ T ＞ △ T1, carry out step S522；
S521：Basal layer and enhancement layer files superposition are sent to mobile phone；
S522：By basal layer and enhancement layer files superposition and together by the enhancement layer files of latter time period adjacent thereto
It is sent to mobile phone.
How the present invention splits to the video segment that request is played back if being further defined, first determine whether request playback
The duration of video segment, if the duration of this section of video is shorter, this section of video reviews record in mobile phone time section t, find and
Period T1-T2 has the playback beginning and ending time of common factor, and records two time points T3 and T4 of common factor, then respectively by T1 with
T3, T2 and T4 are compared, and when two time points of common factor are just T1 and T2, the video segment for asking playback is first divided into base
Plinth layer and enhancement layer files, are then divided basal layer file and corresponding enhancement layer files according still further to preset time period
Cut, then assign identical timestamp to mutually corresponding sub- basal layer and sub- enhancement layer files after segmentation again, be intended to ask back
The video segment put is carried out after dividing processing, then judges the network speed of mobile phone, and idiographic flow is：Set top box is in predetermined amount of time first
Detection video is sent to mobile phone in Td, it includes basal layer and enhancement layer files, calculate of the detection video data bag sent
Number M, then calculates the time Tm that mobile phone exports M packet, Tm is compared with Td, as Tm ＞ Td, shows the defeated of mobile phone
Going out to exist Caton phenomenon does not influence output, and the sub- basal layer file first started first time point T1 in the Td periods is sent to hand
Machine, then mobile phone exported, when judging Tm≤Td, calculate Td and Tm time difference, when the time difference is smaller, by son
Basal layer file and sub- enhancement layer files superposition is sent to mobile phone, when the time difference than it is larger when, by basal layer and enhancement layer files
It is superimposed and the enhancement layer files of latter time period adjacent thereto is together sent to mobile phone, the video of second time period to be sent
When, the time that the number is exported to the packet number and mobile phone of the first time period of transmission is compared, if iterative cycles,
Until the video file for being intended to playback is sent；When the point of common factor is just T1 and T2, show that this section of video belongs to focus piece
Section, so user also wants to the video segment for playing back high definition and smoothness, so the present invention carries out dividing processing to the video segment, so
Judge which video file sent according to the time of mobile phone output data packet afterwards, improve overall viewing effect, it is fixed in the absence of interim card
Level is true.
Embodiment 3
The embodiment of the present invention 3 provides a kind of method that the TV programme to be played back are cached on mobile phone, and this method is with implementing
Example 2 it is essentially identical, unlike, as shown in figure 3, step S5 also comprises the following steps：
S56：As T1=T3, T2 ≠ T4, or when T1 ≠ T3, T2=T4, judge that T3 or T4 time points corresponding frame of video is
No is I frames, if it is not, finding T3 time points latter nearest I frames or T4 time points previous nearest I frames, carries out step
S57, if it is, carrying out step S57；
S57：Whether to its previous I frame be similar frame, if similar frame, continue to look for if judging the I frames, until finding and it
Dissimilar I frames, record the corresponding time point T ' of previous I frames；
S58：T1, T2 period corresponding video segment are cut into 2 sub- video segments from time point T ' punishment；
S59：As T1 ≠ T3, T2 ≠ T4, whether be I frame, if not if judging T3 and T4 time points corresponding frame of video respectively
It is to find T3 time points previous nearest I frames and T4 time points latter nearest I frames, continues step S510, if it is, carries out
Step S510；
S510：Whether to its previous I frame, latter I frame be similar frame, if similar frame if judging two I frames respectively, is continued
Look for, until finding the I frame dissimilar with it, record the corresponding time point T5 and T6 of two I frames found；
S511：T1, T2 period corresponding video segment are cut into 3 sub- video segments from time point T5 and T6 punishment；
S512：The sub-video fragment of acquisition is subjected to dividing processing again, two layers be made up of basal layer and enhancement layer is obtained
File；
S513：Judge video segment may be viewed by value H, and is compared with looking value threshold value H1, as H ＜ H1, be walked
Rapid S514；
S514：Judge whether the basal layer file one by the enhancement layer files of next sub-video fragment and the sub-video fragment
It is same to be sent to mobile phone；
S518：As Tm ＞ Td, the basal layers obtained of step S512 during H >=H1 and enhancement layer files are subjected to step S519,
As Tm≤Td, the basal layers obtained of step S512 during H >=H1 and enhancement layer files are subjected to step S520；
S523：The number M2 of the video data bag of the basal layer file of calculation procedure S514 mobile phones to be sent to, works as step
S518 judges Tm≤Td, calculates M2 and M size, if M2 ＜ M, the enhancement layer files of latter sub-video fragment and the son are regarded
The basal layer file of frequency fragment is together sent to mobile phone, if M2 >=M, is only sent to the basal layer file of the sub-video fragment
Mobile phone.
The present invention judges when further different to two time points of common factor for T1 and T2 situation, when common factor has one
When individual point is not T1 or T2, whether be I frame, if not I frames, find T3 time points latter if judging the corresponding frame of video of T3 or T4
The previous nearest I frames of nearest I frames or T4 time points, by the I frames found and be I frames situation carry out consecutive frame similitude ratio
Compared with, if similar, continually look for, until the I frames of dissmilarity are found, the period T ' of the dissimilar previous I frames of I frames of record, root
According to the time point by video segment into 2 sub- video segments；When two points of common factor are not T1 or T2, judge T3 or
Whether the corresponding frame of video of T4 is I frames, if not I frames, finds T3 time points previous nearest I frames and T4 time points are latter most
Near I frames, by the I frames found and be that the situations of I frames carries out consecutive frame similarity system design, if similar, are continually looked for, until look for
To dissimilar I frames, the corresponding time point T5 and T6 of two I frames found is recorded, by T1, T2 period corresponding video segment
3 sub- video segments are cut into from time point T5 and T6 punishment, sub-video fragment achieved above is split again, basis of formation layer
And enhancement layer files, then judge each sub-video fragment after segmentation may be viewed by value H, and will may be viewed by value and threshold value progress
Comparing, when may be viewed by being worth low, the basic document of the sub-video fragment being only sent to mobile phone, when the mobile phone network speed of detection is big
When, judge the number of the video data bag for the basal layer file to be sent, if packet number is more, only send out basal layer file
Mobile phone is given, if packet number is few, the enhancement layer files by basic document together with next sub-video fragment are sent to mobile phone.
It should be noted that the similarity of I frames of the present invention can be judged according to the file applied before the applicant, or other
Method is judged that the present invention is not specifically limited, and the value H that may be viewed by of the present invention is obtained by equation below：
Wherein, x, k, z, w represent coefficient, and usual value is 0-1, and Y represents the return visit number of times of this section of video, and Q represents the section
The thumb up number of video, G represents the F.F. number of times of this section of video, and S represents the return visit total duration of this section of video, and P represents this section of video
The playing duration of corresponding TV programme.
Embodiment 4
The embodiment of the present invention 4 provides a kind of method that the TV programme to be played back are cached on mobile phone, and this method is with implementing
Example 1 it is essentially identical, unlike, as shown in figure 4, step S50 comprises the following steps：Step S5 also includes：
S524：When step S51 judges C ＞ C1, the I frames in first time point T1 to the second period at time point T2 are extracted,
And judge whether n-th I frames and the N+1 I frame similar, and N >=1, N represents the number of I frames, if similar, by n-th I frames and
The N+1 I frame is put into identical memory block, otherwise, and n-th I frames and the N+1 I frame are respectively put into different memory blocks
It is interior, and each memory block is numbered, and corresponding video segment in each memory block is subjected to step S513.
The present invention is long when the video duration of request playback, and the adjacent I frames volume similarity in this section of video is judged,
Similar I frames are put into same memory block, dissimilar I frames are dealt into different memory blocks, then calculate right in memory block again
That answers sub-video fragment may be viewed by value, be judged to be sent to the video file of mobile phone, mobile phone according to the size that may be viewed by value and network speed
Receive to be cached after video file, and can be broadcast according to the progress constant speed playback of the file situation of the video of receiving or F.F.
Put, it is simple to operate.
The present invention is not limited to above-mentioned preferred forms, and anyone can show that other are various under the enlightenment of the present invention
The product of form, however, make any change in its shape or structure, it is every that there is skill identical or similar to the present application
Art scheme, is within the scope of the present invention.
Claims (10)
1. a kind of method that the TV programme to be played back are cached on mobile phone, it is characterised in that methods described comprises the following steps：
S1：Mobile phone sets up wireless communication with set top box；
S2：Receiving in the playback request that mobile phone is sent, the playback request includes playback television programme title and television channel；
S3：The corresponding video of TV programme of request is transferred out of set top box, and making is carried and each sequence of frames of video of the video
Corresponding timeline interface, is sent to mobile phone and is shown；
S4：Receive first time point T1 and the second time point T2 that mobile phone is inputted on timeline interface；
S5：The video segment between first time point T1 and the second time point T2 is isolated from the video of TV programme, will be regarded
Frequency fragment carries out dividing processing, and judges the video file to be sent according to mobile phone network speed；
S6：Mobile phone is received after the video file sent, is cached and is played.
2. the method for the TV programme to be played back is cached on mobile phone as claimed in claim 1, it is characterised in that step S50
Including：
S51：The duration C, C=for the video segment that computation requests are paid a return visit | T1-T2 |, and be compared with duration threshold value C1, when C≤
C1, carries out step S52；
S52：Collect since the video segment for having common factor in the t periods the time point for receiving playback request with T1 to the T2 periods
The playback beginning and ending time；
S53：Calculate the common factor of T1 to T2 periods and playback beginning and ending time, the corresponding time point T3 and T4 of record common factor；
S54：As T1=T3, T2=T4, step S55 is carried out；
S55：By the corresponding video segment of the duration into two layers of file, based on layer and enhancement layer, and by basal layer and increasing
Strong layer to schedule split by section Td, identical with the imparting of sub- enhancement layer by mutually corresponding sub- basal layer is obtained after segmentation
And unique timestamp.
3. the method for the TV programme to be played back is cached on mobile phone as claimed in claim 2, it is characterised in that step S50
Also include：
S56：Whether as T1=T3, T2 ≠ T4, or when T1 ≠ T3, T2=T4, it is I to judge T3 or T4 time points corresponding frame of video
Frame, if it is not, finding T3 time points latter nearest I frames or T4 time points previous nearest I frames, carries out step S57, if
It is to carry out step S57；
S57：Whether to its previous I frame be similar frame, if similar frame, continue to look for if judging the I frames, until finding and its not phase
As I frames, record the corresponding time point T ' of previous I frames；
S58：T1, T2 period corresponding video segment are cut into 2 sub- video segments from time point T ' punishment.
4. the method for the TV programme to be played back is cached on mobile phone as claimed in claim 3, it is characterised in that step S50
Also include：
S59：As T1 ≠ T3, T2 ≠ T4, whether be I frame, if it is not, looking for if judging T3 and T4 time points corresponding frame of video respectively
To T3 time points previous nearest I frames and T4 time points latter nearest I frames, continue step S510, if it is, carrying out step
S510；
S510：Whether to its previous I frame, latter I frame be similar frame, if similar frame, continue to look for if judging two I frames respectively,
Until finding the I frame dissimilar with it, the corresponding time point T5 and T6 of two I frames found is recorded；
S511：T1, T2 period corresponding video segment are cut into 3 sub- video segments from time point T5 and T6 punishment.
5. the method that the TV programme to be played back are cached on mobile phone as described in claim 3 or 4, it is characterised in that step
S50 also includes：
S512：The sub-video fragment of acquisition is subjected to dividing processing again, two layers of file being made up of basal layer and enhancement layer is obtained；
S513：Judge video segment may be viewed by value H, and is compared with looking value threshold value H1, as H ＜ H1, carry out step
S514；
S514：Judge whether together to send out the basal layer file of the enhancement layer files of next sub-video fragment and the sub-video fragment
Give mobile phone.
6. the method that the TV programme to be played back are cached on mobile phone as described in claim 1-5 is any, it is characterised in that step
Rapid S5 also includes：
S515：In predetermined amount of time Td the video data bag containing basal layer and enhancement layer is sent to mobile phone；
S516：Calculate the number M of the total video packet sent in Td；
S517：Calculate the time Tm used in mobile phone M video data bag of broadcasting.
7. the method for the TV programme to be played back is cached on mobile phone as claimed in claim 6, it is characterised in that step S5 is also
Including：
S518：Tm is compared with Td, as Tm ＞ Td, by the step S55 basal layers obtained and sub- enhancement layer files and H >=
The basal layer and enhancement layer files that step S512 is obtained during H1 carry out step S519, and as Tm≤Td, step S512 during H >=H1 is obtained
The sub- basal layer and sub- enhancement layer that the basal layer and enhancement layer files and step S55 obtained is obtained carry out step S520；
S519：Basal layer file in predetermined amount of time is sent to mobile phone, and the moment is to regarding for being sent in the predetermined amount of time
Frequency packet carries out step S516-S517, when judging Tm≤Td, carries out step S521；
S520：Time difference △ T, △ T=Td-Tm is calculated, and △ T and time difference threshold value △ T1 are compared as △ T≤△ T1,
Step S521 is carried out, as △ T ＞ △ T1, step S522 is carried out；
S521：Basal layer and enhancement layer files superposition are sent to mobile phone；
S522：By basal layer and enhancement layer files superposition and together the enhancement layer files of latter time period adjacent thereto are sent
To mobile phone.
8. the method for the TV programme to be played back is cached on mobile phone as claimed in claim 7, it is characterised in that step S5 is also
Including：
S523：The number M2 of the video data bag of the basal layer file of calculation procedure S514 mobile phones to be sent to, as step S518
Judge Tm≤Td, M2 and M size is calculated, if M2 ＜ M, by the enhancement layer files of latter sub-video fragment and the sub-video piece
The basal layer file of section is together sent to mobile phone, if M2 >=M, and the basal layer file of the sub-video fragment only is sent into hand
Machine.
9. the method for the TV programme to be played back is cached on mobile phone as claimed in claim 2, it is characterised in that step S5 is also
Including：
S524：When step S51 judges C ＞ C1, the I frames in first time point T1 to the second period at time point T2 are extracted, and sentence
Whether disconnected n-th I frames and the N+1 I frame are similar, and N >=1, N represents the number of I frames, if similar, by n-th I frames and N+1
Individual I frames are put into identical memory block, otherwise, and n-th I frames and the N+1 I frame are respectively put into different memory blocks, and
Each memory block is numbered, and corresponding video segment in each memory block is subjected to step S513.
10. the method that the TV programme to be played back are cached on mobile phone as described in claim 5 or 6, it is characterised in that considerable
See that value H is calculated by the following method to obtain：
<mrow>
<mi>H</mi>
<mo>=</mo>
<mfrac>
<mrow>
<mfrac>
<mrow>
<mi>k</mi>
<mi>S</mi>
</mrow>
<mi>P</mi>
</mfrac>
<mo>+</mo>
<mi>z</mi>
<mi>Y</mi>
<mo>+</mo>
<mi>x</mi>
<mi>Q</mi>
</mrow>
<mrow>
<mi>w</mi>
<mi>G</mi>
</mrow>
</mfrac>
</mrow>
Wherein, x, k, z, w represent coefficient, and usual value is 0-1, and Y represents the return visit number of times of this section of video, and Q represents this section of video
Thumb up number, G represents the F.F. number of times of this section of video, and S represents the return visit total duration of this section of video, and P represents this section of video correspondence
TV programme playing duration.
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Denomination of invention: A method of caching TV programs to be played back on mobile phone Effective date of registration: 20210622 Granted publication date: 20190705 Pledgee: Beijing culture science and technology financing Company limited by guarantee Pledgor: CBC CLOUD TECHNOLOGY Co.,Ltd. Registration number: Y2021980005035 |