CN101742173B - Method for supporting watching two-path video and network interaction television system - Google Patents
Method for supporting watching two-path video and network interaction television system Download PDFInfo
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- CN101742173B CN101742173B CN2008102173315A CN200810217331A CN101742173B CN 101742173 B CN101742173 B CN 101742173B CN 2008102173315 A CN2008102173315 A CN 2008102173315A CN 200810217331 A CN200810217331 A CN 200810217331A CN 101742173 B CN101742173 B CN 101742173B
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Abstract
The invention discloses a method for supporting watching two-path video and a network interaction television system. The method comprises that: two-path video stream comprising live main video code stream and picture-in-picture video code stream is introduced into each live channel on a server side, and a corresponding relationship is established between the main video and the picture-in-picture video of the same live channel; when the picture-in-picture function is started, a set-top box requests an EPG server for opening a channel information superposition page with a picture-in-picture window; the EPG server transmits the channel information superposition page to the set-top box, and provides address link information and display position information of a streaming media server for playing the corresponding picture-in-picture video; and the set-top box acquires the corresponding picture-in-picture video code stream through interaction with the appointed streaming media server, decodes the picture-in-picture video code stream and displays picture-in-picture video programs at the appointed window position. Through the method and the system, a user knows and browses the play information and play video of other channel programs when watching the main video program.
Description
Technical field
The present invention relates to network interactive television (IPTV) field, the channel information display method of stacked tape picture-in-picture function when relating in particular to a kind of IPTV system and in the IPTV system, being implemented in main video playback.
Background technology
Along with the continuous development of computer networking technology, the application of IPTV system is developed rapidly and is promoted, and STB is the main terminal equipment in the IPTV system; To the user interactive television and multiple value-added service are provided through the IP data network; The advantage of IPTV on interactivity more and more is superior to traditional DTV, how to utilize this advantage, improves user experience; Win more client, become the focus that all big enterprises pay close attention to.
When the user watches TV programme, provide to access other channel information pages and supply users to consult, this function is extremely useful under the more and more abundanter situation of channel at present, and the user need not leave the channel of watching at present before selected next channel.In order further to strengthen this user experience, the user has proposed when this channel information is browsed, increases corresponding picture-in-picture video window confession user and browses, and makes the user that a more intuitive effect arranged when browsing other channel Word messages.
In TV applications, realize at present Display Technique in the two-path video; Mainly contain two kinds, a kind of is the picture-in-picture function that television set itself possesses, and this television set need be supported the reception of two-way video from hardware circuit; Cost is high; After TV programme converted DTV at present, original television set had just played the effect of display, and the picture-in-picture function that has in original television set can not re-use in this case; The another kind of realization is to carry out the two-path video program through program source in coder side to synthesize one road video, and this implementation method can not be accomplished the random collocation of any two channels, and the realization of source encoder has bigger restriction to function.
Therefore, prior art awaits to improve and development.
Summary of the invention
The object of the present invention is to provide a kind of method and IPTV system that supports to watch two-path video; This system and method can make the user when watching main video frequency program; Access the channel information page of band picture-in-picture, understand and browse the information and the displaying video of other channel programs broadcasts.
The present invention solves the problems of the technologies described above the technical scheme that is adopted to be:
A kind of method of supporting to watch two-path video, wherein: may further comprise the steps:
A, introduce the two-path video stream that comprises live main video code flow and picture-in-picture video code flow for each direct broadcast band in the streaming media server side; And set up two independently program channels for each direct broadcast band, and for setting up corresponding relation between the main video of the same direct broadcast band of expression and the picture-in-picture video by the electron playbill child system server; Said two independently program channel be common big video window channel, be used for the played in full screen of main video channel, and be used for the wicket channel of picture-in-picture function;
B, when the user starts picture-in-picture function, STB is opened the channel information stack page that has picture-in-picture window to the electron playbill child system server requests;
C, said electron playbill child system server transmit the said channel information stack page to said STB, and streaming media server address link information and the display location information of playing corresponding picture-in-picture video are provided;
D, said STB are through mutual with the streaming media server of appointment; Obtain corresponding picture-in-picture video code flow; Said picture-in-picture video code flow is decoded, and show decoded picture-in-picture video frequency program at the window's position of appointment according to said display location information.
Described method, wherein: said picture-in-picture video code flow is to be obtained through the video coding processed compressed by said main video code flow.
Described method, wherein: said display location information comprises the window's position parameter and window size parameter.
Described method, wherein: the color settings of the picture-in-picture window in the said channel information stack page becomes Transparent color.
Described method, wherein: represent that the main video of same direct broadcast band has identical channel with the picture-in-picture video.
Described method, wherein: when the definite channel with the said channel information stack page of user switches to new channel, after said step D, also comprise the execution following steps:
The broadcast that E1, said STB are turned off former picture-in-picture channel video is to the streaming media server address link information of the corresponding picture-in-picture video of electron playbill child system server requests new channel;
Mutual behind F1, the streaming media server address link information of said STB with the streaming media server of appointment according to the corresponding picture-in-picture video of the new channel of receiving, obtain corresponding picture-in-picture video code flow;
G1, said STB are decoded to said picture-in-picture video code flow, and show corresponding picture-in-picture video frequency program at the window's position of appointment.
Described method, wherein: when the definite picture-in-picture window with browsing of user is switching to main video window, after said step D, also comprise the execution following steps:
E2, said STB are closed in progress former main video and former picture-in-picture video;
F2, obtain the main video channel link information of the corresponding program channel of former picture-in-picture channel, and mutual, obtain the video code flow of main video with streaming media server from the electron playbill child system server;
G2, said STB are decoded to said main video code flow and are shown.
Described method, wherein: when the user confirms to close picture-in-picture function, trigger said STB and notify said streaming media server to stop to send current picture-in-picture channel video code stream, close the demonstration of the said channel information stack page simultaneously.
A kind of network interaction television system; Comprise streaming media server, electron playbill child system server, reach STB; Wherein:
Said streaming media server is used to each direct broadcast band and introduces the two-path video code stream, and said two-path video code stream comprises live main video code flow and picture-in-picture video code flow;
Said electron playbill child system server is used to each direct broadcast band and sets up two independently program channels, and one of them main video channel is used for full range to be play, and another picture-in-picture channel is used for picture-in-picture and plays; Also be used to STB the channel information stack that the has picture-in-picture window page is provided, and streaming media server address link information and the display location information of playing corresponding picture-in-picture video is provided;
Said STB comprises two-path video decoding unit at least; Wherein first video decoding unit is used for the decoding of main video code flow; The second road video decoding unit is used for the decoding of picture-in-picture video code flow; Said STB is connected with said streaming media server and the communication of electron playbill child system server, is used for decoding and demonstration to said main video code flow and picture-in-picture video code flow.
Described system, wherein: said picture-in-picture video code flow is to be obtained through the video coding processed compressed by said main video code flow.
Adopted method and system of the present invention; The user can access the channel information page of band picture-in-picture video window through button when watching main video, thus the user can do not leave watch main video frequency program in; Browse to the programme information of other channels; Because the programme information of other channels that the user browsed to had not only comprised Word message but also comprise the picture-in-picture video of corresponding channel, was equivalent to watch two-path video, and the user is had more intuitive effect and experience; And can be directly switch in other channels of wanting to see through the channel information page of band picture-in-picture, perhaps the picture-in-picture channel with browsing switches to main video, to the user multiple choices is provided, and is very easy to the user.
Description of drawings
Fig. 1 accesses the flow chart of picture-in-picture function for user among the present invention;
Fig. 2 utilizes picture-in-picture function to browse the flow chart of other channel informations and video for user among the present invention;
Fig. 3 utilizes picture-in-picture function to switch to the flow chart of selected channel for user among the present invention;
Fig. 4 is an IPTV system schematic of the present invention.
Embodiment
Explain further details below in conjunction with the accompanying drawing specific embodiments of the invention:
Basic thought of the present invention is: make full use of IP network good data transmission property and interactivity; According to the characteristics of IPTV system, for the picture-in-picture video is set up an independently transmission channel, therefore can be according to the performance and the user bandwidth of STB; Revise the compression ratio of video flexibly by server side; Make the picture-in-picture video that arbitrarily obtains different sizes on the STB terminal, the display effect that the different scenes of ability flexible adaptation need accomplishes both to save transmission bandwidth; Have good expandability again, revise simple and convenient.The channel information page that provides among the present invention is made up of channel information literal and corresponding picture-in-picture video window jointly; The picture-in-picture video window display position of end side dynamically offers STB with size by server; STB can adapt to the requirement of different operators according to this parameter; Obtain different display effects, realized the channel information page and the picture-in-picture video effect of synthetic as a whole demonstration well simultaneously.
For realizing such function, IPTV of the present invention system is as shown in Figure 4: comprise streaming media server, electron playbill child system server (EPG server), and STB.Introduce the two-path video code stream by streaming media server for each direct broadcast band, that is, live main video code flow and picture-in-picture video code flow, picture-in-picture video code flow carry out the video coding processed compressed to main video code flow and obtain; The EPG server is used to each direct broadcast band and sets up two independently program channels; One is common big video window channel (main video channel); Be used for played in full screen; Another is the wicket channel (picture-in-picture channel) that is used for picture-in-picture function, and for example: the picture-in-picture channel can be chosen as the video size of 96*96 or 192*192, selects the picture-in-picture video size according to STB performance and user bandwidth; The EPG server also is used to STB the channel information stack that the has picture-in-picture window page is provided, and streaming media server address link information and the display location information of playing corresponding picture-in-picture video is provided.STB need increase by one road decoding capability; Promptly; STB comprises two-path video decoding unit at least, and wherein first video decoding unit is used for the decoding of main video code flow, and the second road video decoding unit is used for the decoding of picture-in-picture video code flow; STB is connected with streaming media server and the communication of EPG server, is used for decoding and demonstration to main video code flow and picture-in-picture video code flow.
It is as shown in Figure 1 that the user accesses the flow process of picture-in-picture function in the inventive method, may further comprise the steps:
A, introduce the two-path video stream that comprises live main video code flow and picture-in-picture video code flow for each direct broadcast band by streaming media server at server side; And set up two independently program channels for each direct broadcast band by the EPG server; A channel is conventional programme televised live master video window code stream; The played in full screen that is used for regular channel; Another channel is special-purpose picture-in-picture video; The code stream of this channel is that corresponding main video code flow carries out the video coding processed compressed and obtains, and the compression ratio of picture-in-picture video can be come comprehensive selection according to the decoding capability and the user bandwidth of STB, and for setting up corresponding relation between the main video of the same direct broadcast band of expression and the picture-in-picture video; So that when the picture-in-picture video switch becomes main video, can find a corresponding relationship, common processing method is that the main video of the same direct broadcast band of expression has identical channel attribute with the picture-in-picture video;
B, when the user starts picture-in-picture function; " picture-in-picture " button that uses a teleswitch triggers STB and opens the channel information stack page that has picture-in-picture window to the EPG server requests; With the wicket of a picture-in-picture displaying video, the color settings of wicket becomes Transparent color in this channel information page;
When C, EPG server transmit the channel information stack page to STB, also transmit the streaming media server address link information of playing corresponding picture-in-picture video, promptly corresponding picture-in-picture video playback URL (Uniform Resource Locator---URL) to STB; And in the URL that transmits, increase display location information; Described display location information comprises the location parameter and the size parameter of picture-in-picture window, and display location information can be attached to after the URL, the field that we define ourselves with the space definition; For example: rtsp: // 10.40.93.173/VCDN01234567890123/vod/00000000020000000011 .mp4P1=(50; 100)? P2=(350,400), in this example; Represent the coordinate in the upper left corner with P1, represent the coordinate in the lower right corner with P2
D, STB superpose channel information before the page is superimposed upon the main video of being play; And use the streaming media server of this URL and appointment mutual; Obtain corresponding picture-in-picture video code flow; By the second road video decoding unit picture-in-picture video code flow is decoded, and show decoded picture-in-picture video frequency program at the window's position of appointment according to display location information.Because the mid band information stack page of the present invention is made up of channel information literal and picture-in-picture video window object; And picture-in-picture video window object color attribute is arranged to the Transparent color with STB agreement; Therefore; The picture-in-picture video shows through this transparent window from this stack page back, has realized the whole display effect that the page and picture-in-picture video window are combined intactly.
Set-top box users is in the picture-in-picture function use; At any time can pass through " cancellation picture-in-picture " button; Close picture-in-picture function; Promptly trigger STB notification streams media server and stop to send current picture-in-picture channel video code stream, STB is closed the picture-in-picture stack page and picture-in-picture video window simultaneously.
In having the playing programs process of picture-in-picture window, the user can move on the different channel information through cursor up and down at the channel information page, and picture-in-picture window can be play the video of corresponding channel according to the change of this channel information.When the user confirms channel information is superposeed the channel of the page when switching to new channel, as shown in Figure 2, comprise the steps:
In the time of E1, channel information variation, STB is turned off the broadcast of former picture-in-picture channel video, to the streaming media server address link information of the corresponding picture-in-picture video of EPG server requests new channel, and the URL of promptly corresponding picture-in-picture channel link;
F1, STB receive that this link back is mutual with the streaming media server of appointment, obtain the picture-in-picture video code flow of corresponding program;
G1, STB are decoded to the picture-in-picture video code flow that obtains, and show corresponding picture-in-picture video frequency program at the window's position of appointment.
This operation can be used the channel switching one by one in the picture-in-picture page of channel switch key too; Switch each time; The cursor of channel information is corresponding on the picture-in-picture page moves, and the EPG server issues corresponding channel link simultaneously, and video content is also changed with the change of channel information.
Fig. 3 provides the process that switches to main video window from picture-in-picture window.In having the playing programs process of picture-in-picture window; If the user wants to switch to the picture-in-picture channel of browsing; Can trigger STB and switch in the pairing channel of current picture-in-picture through " confirming (OK) " key; When the definite picture-in-picture window with browsing of user is switching to main video window, comprise the execution following steps:
E2, STB notification streams media server stop to send in progress picture-in-picture channel and main video code flow, close in progress main video and picture-in-picture video, and close the demonstration of the channel information page;
The video code flow of main video is obtained in F2, the main video URL link of obtaining the corresponding program channel of former picture-in-picture channel from the EPG server, and mutual with new channel link and streaming media server;
G2, STB are decoded to main video code flow and are shown, accomplish channel and switch.
Because the present invention has made full use of IP network good data transmission property and interactivity; Characteristics according to the IPTV system have been set up an independently transmission channel for the picture-in-picture video; Therefore can be according to the performance and the user bandwidth of STB, revise the compression ratio of video flexibly by server side, make the picture-in-picture videos that can arbitrarily obtain different sizes on the STB terminal; The display effect that the different scenes of ability flexible adaptation need; Accomplish both to save transmission bandwidth, have good expandability again, revise simple and convenient.Made full use of the advantage of IPTV system IP based network; To not needing to do again extra processing such as synthetic before the video flowing entering terminal; And the position that shows of picture-in-picture video and size be by the server side decision, the display effect that can the different scenes of flexible adaptation needs, the display effect that is integrated into an integral body that the page that issues with server also can be complete; End side software is realized simple and convenient, and extensibility is good.The present invention has been for the user provides a kind of method of supporting to watch two-path video, made things convenient for the user when watching program, can not leave this program and browsed the programme information of other channels, and this method is simple, flexibly, be prone to realize.
It is understandable that, concerning those of ordinary skills, can be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, and all these changes or replacement all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. method that two-path video is watched in support is characterized in that: may further comprise the steps:
A, introduce the two-path video stream that comprises live main video code flow and picture-in-picture video code flow for each direct broadcast band in the streaming media server side; And set up two independently program channels for each direct broadcast band, and for setting up corresponding relation between the main video of the same direct broadcast band of expression and the picture-in-picture video by the electron playbill child system server; Said two independently program channel be common big video window channel, be used for the played in full screen of main video channel, and be used for the wicket channel of picture-in-picture function;
B, when the user starts picture-in-picture function, STB is opened the channel information stack page that has picture-in-picture window to the electron playbill child system server requests;
C, said electron playbill child system server transmit the said channel information stack page to said STB, and streaming media server address link information and the display location information of playing corresponding picture-in-picture video are provided;
D, said STB are through mutual with the streaming media server of appointment; Obtain corresponding picture-in-picture video code flow; Said picture-in-picture video code flow is decoded, and show decoded picture-in-picture video frequency program at the window's position of appointment according to said display location information.
2. method according to claim 1 is characterized in that: said picture-in-picture video code flow is to be obtained through the video coding processed compressed by said main video code flow.
3. method according to claim 1 is characterized in that: said display location information comprises the window's position parameter and window size parameter.
4. method according to claim 1 is characterized in that: the color settings of the picture-in-picture window in the said channel information stack page becomes Transparent color.
5. method according to claim 1 is characterized in that: represent that the main video of same direct broadcast band has identical channel with the picture-in-picture video.
6. according to the described method of the arbitrary claim of claim 1 to 5, it is characterized in that: when the definite channel with the said channel information stack page of user switches to new channel, after said step D, also comprise the execution following steps:
The broadcast that E1, said STB are turned off former picture-in-picture channel video is to the streaming media server address link information of the corresponding picture-in-picture video of electron playbill child system server requests new channel;
Mutual behind F1, the streaming media server address link information of said STB with the streaming media server of appointment according to the corresponding picture-in-picture video of the new channel of receiving, obtain corresponding picture-in-picture video code flow;
G1, said STB are decoded to said picture-in-picture video code flow, and show corresponding picture-in-picture video frequency program at the window's position of appointment.
7. according to the described method of the arbitrary claim of claim 1 to 5, it is characterized in that: when the definite picture-in-picture window with browsing of user is switching to main video window, after said step D, also comprise the execution following steps:
E2, said STB are closed in progress former main video and former picture-in-picture video;
F2, obtain the main video channel link information of the corresponding program channel of former picture-in-picture channel, and mutual, obtain the video code flow of main video with streaming media server from the electron playbill child system server;
G2, said STB are decoded to said main video code flow and are shown.
8. according to the described method of the arbitrary claim of claim 1 to 5; It is characterized in that: when the user confirms to close picture-in-picture function; Trigger said STB and notify said streaming media server to stop to send current picture-in-picture channel video code stream, close the demonstration of the said channel information stack page simultaneously.
9. network interaction television system; Comprise streaming media server, electron playbill child system server, reach STB; It is characterized in that:
Said streaming media server is used to each direct broadcast band and introduces the two-path video code stream, and said two-path video code stream comprises live main video code flow and picture-in-picture video code flow;
Said electron playbill child system server is used to each direct broadcast band and sets up two independently program channels, and one of them main video channel is used for full range to be play, and another picture-in-picture channel is used for picture-in-picture and plays; Also be used to STB the channel information stack that the has picture-in-picture window page is provided, and streaming media server address link information and the display location information of playing corresponding picture-in-picture video is provided;
Said STB comprises two-path video decoding unit at least; Wherein first video decoding unit is used for the decoding of main video code flow; The second road video decoding unit is used for the decoding of picture-in-picture video code flow; Said STB is connected with said streaming media server and the communication of electron playbill child system server, is used for decoding and demonstration to said main video code flow and picture-in-picture video code flow.
10. according to the described system of claim, it is characterized in that: said picture-in-picture video code flow is to be obtained through the video coding processed compressed by said main video code flow.
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| WO2016074327A1 (en) * | 2014-11-14 | 2016-05-19 | 广州华多网络科技有限公司 | Control method, apparatus and system of media stream |
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