CN107370768A - A kind of intelligent television Streaming Media prebrowsing system and method - Google Patents

A kind of intelligent television Streaming Media prebrowsing system and method Download PDF

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Publication number
CN107370768A
CN107370768A CN201710817116.8A CN201710817116A CN107370768A CN 107370768 A CN107370768 A CN 107370768A CN 201710817116 A CN201710817116 A CN 201710817116A CN 107370768 A CN107370768 A CN 107370768A
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key frame
module
picture
instruction
frame picture
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CN201710817116.8A
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CN107370768B (en
Inventor
纪琦华
蒲珂
曾泽基
方宏
李哲山
鲁豪
胡彬
魏明
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China Science And Technology Co Ltd
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China Science And Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/75—Media network packet handling
    • H04L65/764—Media network packet handling at the destination 
    • 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
    • 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
    • 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
    • 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
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • 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
    • H04N21/83—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
    • H04N21/8455—Structuring of content, e.g. decomposing content into time segments involving pointers to the content, e.g. pointers to the I-frames of the video stream
    • 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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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Information Transfer Between Computers (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

The present invention relates to a kind of intelligent television Streaming Media prebrowsing system, including streaming media server, intelligent television processor and the local caches being connected with intelligent television processor and control terminal；Streaming media server includes key frame interception module and key frame sending module；Intelligent television processor includes display module, update module, picture load-on module and exits module；Key frame picture is downloaded, when needing to be shown, the method shown by N row floating windows is shown, reaction is quick, substantially reduces delay, and floating window does not conflict with video playback window, whole navigation process is carried out in floating window, the broadcasting of normal video is not influenceed, is shown with the form of N row floating windows, and the display picture in floating window can carry out real-time update, it is quick by fast forwarding or rewinding key, simply, easily in a dynamic way, the preview graph of whole video is browsed.

Description

A kind of intelligent television Streaming Media prebrowsing system and method
Technical field
The invention belongs to communication technical field, more particularly to a kind of intelligent television Streaming Media prebrowsing system and method.
Background technology
Now, the application of intelligent TV set or television set carrying intelligent television box is more and more extensive, and user is in viewing intelligence During the program video of TV, it is often necessary to the content of overall some Streaming Media of preview is general in the mode of PC ends preview Streaming Media It is that cursor placement can be seen into the preview graph of cursor point on progress bar, but on intelligent television, this kind of mode is difficult reality It is existing, and this kind of mode can only obtain certain point video preview figure manually, it is impossible to smooth realizes Streaming Media preview；Prior art In be directed to intelligent television, there is certain preview function, i.e., the preview picture of Streaming Media is browsed during F.F., it is difficult to be real The entire content of streaming media carries out preview while viewing video now.
The content of the invention
In order to solve the above problems, the invention provides a kind of intelligent television Streaming Media prebrowsing system, concrete scheme are as follows：
A kind of intelligent television Streaming Media prebrowsing system, including streaming media server, intelligent television processor and with intelligent electricity The local caches and control terminal being connected depending on processor；
Streaming media server includes key frame interception module and key frame sending module；
Key frame interception module, for analyzing the video content of Streaming Media, and extract constant duration T1 key frame figure Piece, and timestamp and numbering mark are carried out to key frame picture；
Key frame sending module, for while user video playing request is received, key frame interception module to be obtained Key frame picture be packaged and delivered to local caches；
Intelligent television processor includes display module, update module, picture load-on module and exits module；
Display module, the instruction for previewing of control terminal transmission is being received, is showing n row floating windows, and cursor is fixed on one In individual floating window, picture loading instruction is sent into preview state, while to picture load-on module；Illustrate in specification, Bu Huiying Ring normal play
Update module, the advance or retrogressing instruction sent for receiving control terminal under preview state, is loaded to picture Module sends the picture instruction of renewal key frame；
Picture load-on module, for receiving picture loading instruction, key frame picture is loaded, by key frame picture according to the time Order is shown in floating window, and is received and performed the picture instruction of renewal key frame；
Module is exited, the exit instruction sent for receiving control terminal, and exit floating window and show.
Key frame picture is downloaded, when needing to be shown, the method shown by N row floating windows is shown, reaction Fast, delay is substantially reduced, and floating window does not conflict with video playback window, whole navigation process is carried out in floating window, is not influenceed The broadcasting of normal video, shown with the form of N row floating windows, and the display picture in floating window can carry out real-time update, lead to Cross F.F. or back spacer is quick, simply, easily in a dynamic way, browse the preview graph of whole video.
On the other hand, the invention provides a kind of intelligent television Streaming Media method for previewing, comprise the following steps：
Key frame picture obtains and forwarding step：Streaming media server analyzes the video content of Streaming Media, and during extraction etc. Between be spaced T1 key frame picture, and timestamp is carried out to key frame picture and numbering marks, and in user video playing request While, key frame picture is packaged and delivered to local caches；
Into preview state step：When controlling terminal to send instruction for previewing, n row floating windows are shown on broadcast interface, and Cursor is fixed in a floating window, into preview state；
Key frame step display：Key frame picture is loaded, and it is suitable according to the time according to the timestamp information of key frame picture Sequence is shown in floating window；
Picture updates step：When receiving the advance for controlling terminal to be sent under preview state or retreating instruction, by floating window Interior picture is updated to next key frame or previous keyframe；
Exit preview state step：When receiving the exit instruction that control terminal is sent, exit floating window and show, exit preview State.
Further, key frame step display comprises the following steps：
Progress judgment step, when controlling terminal to send instruction for previewing, judge the currently playing progress of video；
Main key frame load step, according to the currently playing progress of video and the temporal information of key frame picture, extraction is with working as The key frame picture that the nearest numbering of preceding playing progress rate is X is shown in the floating window of cursor fixation, and is set as main key frame；
Other key frame load steps：According to the timestamp information of main key frame, adjacent key is transferred according to preset rules Frame picture, other floating windows are then sent to sequentially in time and are shown.
Key frame picture is downloaded packing by streaming media server according to time interval in advance, and video observing is carried out in user While seeing request, packing granting is carried out, is stored in the local cache of Intelligent television terminal, when the desired progress story of a play or opera of user is pre- It when looking at, only need to enter preview state, the floating window of 1 row N row can be shown, local key frame is loaded sequentially in time in floating window, Key frame is changed also need to only be transferred from local cache, and reaction is quick sensitive, substantially reduces delay, and floating window and video playback Window does not conflict, and whole navigation process is carried out in floating window, does not influence the broadcasting of normal video, is carried out with the form of N row floating windows It has been shown that, and the display picture in floating window can carry out real-time update, quick by fast forwarding or rewinding key, simply, easily with Dynamic mode, browse the preview graph of whole video.
Brief description of the drawings
Annexation figure between each part of the intelligent television Streaming Media prebrowsing system of Fig. 1 embodiments 1 and module；
Annexation figure between each part of the intelligent television Streaming Media prebrowsing system of Fig. 2 embodiments 1 and module；
Annexation figure between each part of the intelligent television Streaming Media prebrowsing system of Fig. 3 embodiments 2 and module；
The flow chart of the intelligent television Streaming Media method for previewing of Fig. 4 embodiments 3.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples, and the following example is only used for explaining the present invention The content of the invention, be not intended to limit the scope of the invention.
Embodiment 1
A kind of intelligent television Streaming Media prebrowsing system, as shown in figure 1, including streaming media server 1, intelligent television processor 2 and the local caches 4 that are connected with intelligent television processor 2 and control terminal 5；
Streaming media server 1 includes key frame interception module 101 and key frame sending module 102；
Key frame interception module 101, for analyzing the video content of Streaming Media, and extract constant duration T1 key frame Picture, and timestamp and numbering mark are carried out to key frame picture；
Key frame sending module 102, for while user video playing request is received, by key frame interception module The 101 key frame pictures obtained are packaged and delivered to local caches 4；
Intelligent television processor 2 includes display module 103, update module 104, picture load-on module 105 and exits module 106；
Display module 103, the instruction for previewing of the control transmission of terminal 5 is being received, is showing n row floating windows, and cursor is fixed In in a floating window, picture loading instruction is sent into preview state, while to picture load-on module 105；
Update module 104, the advance or retrogressing instruction sent for receiving control terminal 5 under preview state, to picture Load-on module 105 sends the picture instruction of renewal key frame；
Picture load-on module 105, for receive picture loading instruction, load key frame picture, by key frame picture according to Time sequencing is shown in floating window, and is received and performed the picture instruction of renewal key frame；
Module 106 is exited, the exit instruction sent for receiving control terminal 5, and exit floating window and show.
Key frame picture is downloaded packing by streaming media server according to time interval in advance, and video observing is carried out in user While seeing request, packing granting is carried out, is stored in the local cache of Intelligent television terminal, when the desired progress story of a play or opera of user is pre- It when looking at, only need to enter preview state, the floating window of 1 row N row can be shown, local key frame is loaded sequentially in time in floating window, Key frame is changed also need to only be transferred from local cache, and reaction is quick sensitive, substantially reduces delay, and floating window and video playback Window does not conflict, and whole navigation process is carried out in floating window, does not influence the broadcasting of normal video, is carried out with the form of N row floating windows It has been shown that, and the display picture in floating window can carry out real-time update, quick by fast forwarding or rewinding key, simply, easily with Dynamic mode, browse the preview graph of whole video.
Embodiment 2
A kind of intelligent television Streaming Media prebrowsing system, as shown in Fig. 2 being with the difference of embodiment 1, further limit, The triggering button of instruction for previewing does not include forward key, Reverse keys, F.F. button and rewind button；Processor 2 also includes shape State judge module 205 and single window display module 206, picture load-on module 105 include progress judging submodule 201, main key Frame loading submodule 202, other key frames loading submodule 203, key frame renewal submodule 204 and the extraction of rapid preview picture Submodule 207；
The display module 103, it is additionally operable to, when receiving the instruction for previewing that control terminal 5 is sent, judge son to progress Module 201 sends progress decision instruction；
Progress judging submodule 201, for receiving progress decision instruction, the currently playing progress of video is obtained, to main key Frame loading submodule 202 sends loading instruction；
Main key frame loads submodule 202, according to the currently playing progress of video and the temporal information of key frame picture, extraction The key frame picture that nearest numbering is X with currently playing progress is shown in the floating window of cursor fixation；
Other key frames load submodule 203, according to main key frame load submodule 202 extract key frame picture when Between stab information, transfer adjacent key frame picture according to preset rules, be then sent to other floating windows sequentially in time and shown Show；
Key frame updates submodule 204, for receiving the renewal key frame instruction of the transmission of update module 104, and will be all The key frame picture of floating window is updated to next key frame or previous keyframe；
Condition judgment module 205, when receiving the advance or retrogressing instruction that control terminal 5 is sent, judge whether pre- Look at state, if it is judged that being "No", sent to single window display module 206 and show that single window instructs, while to quick pre- Picture extracting sub-module 207 of looking at sends extraction instruction；
Single window display module 206, when receiving the fast forward and fast reverse instruction that control terminal 5 is sent, or state is sentenced During the display list window instruction that disconnected module 205 is sent, show single floating window on video playback interface；
Rapid preview picture extracting sub-module 207, for receiving extraction instruction, judge the multiple of fast forward and fast reverse, or Step-length time advanced or retreated, and according to the currently playing progress of video, extract corresponding key frame picture, send and it is continuous more Newly in single floating window.
Every time enter preview state when, currently playing progress is judged, ensure floating window in display key frame and Playing progress rate is adapted, avoid last time when carry out preview with when secondary preview time interval is larger, currently playing progress is It is higher, but preview picture is also maintained in the time schedule of last time, produces the content problems for repeating preview to watch.
When advance, retrogressing of the user under non-preview state, when either setting F.F. or the fast reverse operation of multiple, explanation User needs to carry out F.F. or rewind, at this moment only shows single floating window, and make by oneself according to the multiple of setting, or control terminal The time of advance or the retrogressing of justice is not grown, and interval transfers key frame picture and carries out single display, makes user in fast forward and fast reverse During can watch a certain amount of picture, but not redundancy again, is suitable for the application of simple and fast.
Embodiment 3
A kind of intelligent television Streaming Media prebrowsing system, as shown in figure 3, being with the difference of embodiment 2, further limit, Preset rules are prefixed time interval T2；Processor 2 also includes time judgment module 301, scene analysis module 302, insertion mould Block 303, the first scene judge module 304 and the second scene judge module 305；
Main key frame loads submodule 202, is additionally operable to after the key frame picture for being X in extraction numbering, judges to the time Module 301 sends time decision instruction；
Time judgment module 301, for judging T1 and T2 size, if T1 ＜ T2, send to scene analysis module 302 Scene analysis instructs；
Scene analysis module 302, including for numbering the key frame picture for being X+nT2 with numbering the pass for being X+nT2-T2 The scene information for the key frame that key frame picture is skipped with centre is analyzed, and sending judgement to the first scene judge module 304 refers to Order；
First scene judge module 304, for judge the middle key frame picture skipped scene information whether with numbering Scene information for X+nT2 key frame picture is identical, if it is judged that being "No", is sent out to the second scene judge module 305 Send decision instruction；
Second scene judge module 305, for judge the middle key frame picture skipped scene information whether with numbering Scene information for X+nT2-T2 key frame picture is identical, if it is judged that being "No", insertion is sent to insertion module 303 Instruction；
Module 303 is inserted, for receiving inserting instruction, it is X+ to transfer and number the key frame picture for being X+nT2 with numbering The key frame picture skipped among nT2-T2 key frame picture, sequentially in time, is inserted into floating window and is shown.
When streaming media server carries out key-frame extraction, such as 1s according to a less time interval, but intelligence electricity The display prefixed time interval of terminal is regarded as relatively large time interval, such as 5s, then need according to this larger time Interval T2 carries out selecting for key frame, such as during 45s, the main key frame for being X according to video progress extraction numbering, and set according to X Put other key frames, X-10, X-5, X, X+5, X+10, X+15,, order extracted and shown, adjacent X+nT2 and X+ (n-1) among the key frame at T2 time points, necessarily there is the key frame omitted, the scene of the key frame of omission is judged, If it find that in the key frame of omission, there is the key point picture of scene switching, then extract the key point picture, according to when Between the order stabbed, be inserted into corresponding floating window and shown, be advantageous to the overall assurance of the story of a play or opera, flexible display mode, tool There is the experience sense of more excellent viewing video, with more practicality.
Embodiment 4
A kind of intelligent television Streaming Media method for previewing, as shown in figure 4, preset rules are prefixed time interval T2, including such as Lower step：
Key frame picture obtains and forwarding step：Streaming media server analyzes the video content of Streaming Media, and during extraction etc. Between be spaced T1 key frame picture, and timestamp is carried out to key frame picture and numbering marks, and in user video playing request While, key frame picture is packaged and delivered to local caches；
Into preview state step：When controlling terminal to send instruction for previewing, n row floating windows are shown on broadcast interface, and Cursor is fixed in a floating window, into preview state；
Progress judgment step, when controlling terminal to send instruction for previewing, judge the currently playing progress of video；
Main key frame load step, according to the currently playing progress of video and the temporal information of key frame picture, extraction is with working as The key frame picture that the nearest numbering of preceding playing progress rate is X is shown in the floating window of cursor fixation, and is set as main key frame；
Time judgment step：After the main key frame picture that numbering is X is extracted, T1 and T2 size are judged, if T1 ＜ T2, carry out scene analysis step；
Scene analysis step, the key frame picture that the key frame picture that analysis numbering is X+nT2 is X+nT2-T2 with numbering The scene information for the key frame skipped with centre；
First scene judgment step, whether the scene information for judging the middle key frame picture skipped is X+nT2 with numbering Key frame picture scene information it is identical, if it is judged that be "No", carry out the second scene judgment step；
Second scene judgment step, whether the scene information for judging the middle key frame picture skipped is X+nT2- with numbering The scene information of T2 key frame picture is identical, if it is judged that being "No", carries out inserting step；
Inserting step；It will number among the key frame picture that the key frame picture for being X+nT2 is X+nT2-T2 with numbering and jump The key frame picture crossed carries out tune and gone, and sequentially in time, is inserted into floating window and is shown；
Picture updates step：When receiving the advance for controlling terminal to be sent under preview state or retreating instruction, by floating window Interior picture is updated to next key frame or previous keyframe；
Exit preview state step：When receiving the exit instruction that control terminal is sent, exit floating window and show, exit preview State.
Embodiment 5
A kind of intelligent television Streaming Media method for previewing, the difference with embodiment 4 are that method also comprises the following steps：
Condition adjudgement step, when receiving the advance or retrogressing instruction that control terminal is sent, judge whether in preview shape State, if it is judged that being "No", carry out single window step display；
Single window step display：Single floating window is shown in video playback window, and according to the multiple of fast forward and fast reverse, or The step-length time advanced or retreated, and the currently playing progress of video, corresponding key frame picture is extracted, is continuously updated in single In floating window.

Claims (10)

1. a kind of intelligent television Streaming Media prebrowsing system, it is characterised in that including streaming media server (1), intelligent television processing Device (2) and the local caches (4) being connected with the intelligent television processor (2) and control terminal (5)；
The streaming media server (1) includes key frame interception module (101) and key frame sending module (102)；
The key frame interception module (101), for analyzing the video content of Streaming Media, and extracts constant duration T1 key Frame picture, and timestamp and numbering mark are carried out to key frame picture；
The key frame sending module (102), for while user video playing request is received, the key frame to be intercepted The key frame picture that module (101) obtains is packaged and delivered to local caches (4)；
The intelligent television processor (2) include display module (103), update module (104), picture load-on module (105) and Exit module (106)；
The display module (103), in the instruction for previewing for receiving control terminal (5) and sending, n row floating windows are shown, and by cursor It is fixed in a floating window, picture loading instruction is sent into preview state, while to picture load-on module (105)；
Update module (104), the advance or retrogressing instruction sent for receiving control terminal (5) under preview state, to picture Load-on module (105) sends the picture instruction of renewal key frame；
The picture load-on module (105), for receiving picture loading instruction, key frame picture is loaded, key frame picture is pressed It is shown according to time sequencing in floating window, and receives and perform the picture instruction of renewal key frame；
Exit instruction that is described to exit module (106), being sent for receiving control terminal (5), and exit floating window and show.
2. intelligent television Streaming Media prebrowsing system as claimed in claim 1, it is characterised in that the picture load-on module (105) progress judging submodule (201), main key frame loading submodule (202), other key frames loading submodule are included (203) and key frame updates submodule (204)；
The display module (103), it is additionally operable to, when receiving the instruction for previewing that control terminal (5) is sent, judge son to progress Module (201) sends progress decision instruction；
The progress judging submodule (201), for receiving progress decision instruction, obtain the currently playing progress of video, Xiang Zhuguan Key frame loading submodule (202) sends loading instruction；
The main key frame loading submodule (202), according to the currently playing progress of video and the temporal information of key frame picture, carries The key frame picture that the numbering nearest with currently playing progress is X is taken to be shown in the floating window of cursor fixation；
Other key frames loading submodule (203), the key frame picture of submodule (202) extraction is loaded according to main key frame Timestamp information, transfer adjacent key frame picture according to preset rules, be then sent to other floating windows sequentially in time and enter Row display；
The key frame renewal submodule (204), for receiving the renewal key frame instruction of update module (104) transmission, and will The key frame picture of all floating windows is updated to next key frame or previous keyframe.
3. intelligent television Streaming Media prebrowsing system as claimed in claim 1, it is characterised in that the triggering of the instruction for previewing is pressed Key does not include forward key, Reverse keys, F.F. button and rewind button.
4. intelligent television Streaming Media prebrowsing system as claimed in claim 3, it is characterised in that the processor (2) also includes Condition judgment module (205), single window display module (206), the picture load-on module (105) also include rapid preview picture Extracting sub-module (207)；
The condition judgment module (205), when receiving the advance or retrogressing instruction that control terminal (5) is sent, judge whether In preview state, if it is judged that be "No", sent to single window display module (206) and show that single window instructs, to quick Preview picture extracting sub-module (207) sends extraction instruction；
Single window display module (206), when receiving the fast forward and fast reverse instruction that control terminal (5) is sent, Huo Zhezhuan During the display list window instruction that state judge module (205) is sent, show single floating window on video playback interface；
The rapid preview picture extracting sub-module (207), for receiving extraction instruction, judge the multiple of fast forward and fast reverse, or Step-length time that person advances or retreated, and according to the currently playing progress of video, extract corresponding key frame picture, continuously update in In single floating window.
5. intelligent television Streaming Media prebrowsing system as claimed in claim 2, it is characterised in that when the preset rules is preset Between be spaced T2.
6. intelligent television Streaming Media prebrowsing system as claimed in claim 5, it is characterised in that the processor (2) also includes Time judgment module (301), scene analysis module (302), insertion module (303), the first scene judge module (304) and second Scene judge module (305)；
The main key frame loading submodule (202), it is additionally operable to after the key frame picture for being X in extraction numbering, sentences to the time Disconnected module (301) sends time decision instruction；
The time judgment module (301), for judging T1 and T2 size, if T1 ＜ T2, to scene analysis module (302) Send scene analysis instruction；
The scene analysis module (302), including for being X+nT2-T2's to the key frame picture that numbering is X+nT2 and numbering The scene information for the key frame that key frame picture is skipped with centre is analyzed, and is sent and is sentenced to the first scene judge module (304) Severed finger makes；
The first scene judge module (304), for judge the middle key frame picture skipped scene information whether with volume Number for X+nT2 key frame picture scene information it is identical, if it is judged that being "No", to the second scene judge module (305) decision instruction is sent；
The second scene judge module (305), for judge the middle key frame picture skipped scene information whether with volume It is number identical for the scene information of X+nT2-T2 key frame picture, if it is judged that be "No", to insertion module (303) transmission Inserting instruction；
The insertion module (303), for receiving inserting instruction, it is X+ to transfer and number the key frame picture for being X+nT2 with numbering The key frame picture skipped among nT2-T2 key frame picture, sequentially in time, is inserted into floating window and is shown.
7. a kind of intelligent television Streaming Media method for previewing, it is characterised in that methods described comprises the following steps：
Key frame picture obtains and forwarding step：Streaming media server analyzes the video content of Streaming Media, and between the time such as extraction Every T1 key frame picture, and timestamp and numbering mark are carried out to key frame picture, and in the same of user video playing request When, key frame picture is packaged and delivered to local caches；
Into preview state step：When controlling terminal to send instruction for previewing, n row floating windows are shown on broadcast interface, and by light Mark is fixed in a floating window, into preview state；
Key frame step display：Key frame picture is loaded, and is shown sequentially in time according to the timestamp information of key frame picture Show in floating window；
Picture updates step：When receiving the advance for controlling terminal to be sent under preview state or retreating instruction, by floating window Picture is updated to next key frame or previous keyframe；
Exit preview state step：When receiving the exit instruction that control terminal is sent, exit floating window and show, exit preview shape State.
8. intelligent television Streaming Media method for previewing as claimed in claim 7, it is characterised in that the key frame step display bag Include following steps：
Progress judgment step, when controlling terminal to send instruction for previewing, judge the currently playing progress of video；
Main key frame load step, according to the currently playing progress of video and the temporal information of key frame picture, extract with currently broadcasting The key frame picture that the nearest numbering of degree of putting into is X is shown in the floating window of cursor fixation, and is set as main key frame；
Other key frame load steps：According to the timestamp information of main key frame, adjacent key frame figure is transferred according to preset rules Piece, other floating windows are then sent to sequentially in time and are shown.
9. intelligent television Streaming Media method for previewing as claimed in claim 8, it is characterised in that when the preset rules is preset Between be spaced T2, methods described also comprises the following steps,
Time judgment step：After the main key frame picture that numbering is X is extracted, T1 and T2 size are judged, if T1 ＜ T2, Carry out scene analysis step；
Scene analysis step, the key frame picture that analysis numbering is X+nT2 is with the key frame picture that numbering is X+nT2-T2 with Between the scene information of key frame skipped；
First scene judgment step, judge the scene information of the middle key frame picture skipped whether with numbering the pass for being X+nT2 The scene information of key frame picture is identical, if it is judged that being "No", carries out the second scene judgment step；
Second scene judgment step, whether the scene information for judging the middle key frame picture skipped is X+nT2-T2's with numbering The scene information of key frame picture is identical, if it is judged that being "No", carries out inserting step；
Inserting step；It will number among the key frame picture that the key frame picture for being X+nT2 is X+nT2-T2 with numbering and skip Key frame picture carries out tune and gone, and sequentially in time, is inserted into floating window and is shown.
10. intelligent television Streaming Media method for previewing as claimed in claim 9, it is characterised in that methods described also includes as follows Step：
Condition adjudgement step, when receiving advance that control terminal sends or retreating instruction, judge whether in preview state, such as Fruit judged result is "No", carries out single window step display；
Single window step display：Single floating window is shown in video playback window, and according to the multiple of fast forward and fast reverse, or advance Or the step-length time retreated, and the currently playing progress of video, corresponding key frame picture is extracted, is continuously updated in single floating window It is interior.
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