CN117939183A - Multi-machine-position free view angle guided broadcasting method and system - Google Patents
Multi-machine-position free view angle guided broadcasting method and system Download PDFInfo
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Abstract
The invention provides a multi-machine-position free view angle broadcasting method and system, which relate to the technical field of digital information transmission, and more particularly relate to video information transmission and monitoring, wherein a first video player signal and a second video player signal are transmitted to a user terminal through a distribution server so as to display videos in the first video player and the second video player, a multi-grid page is arranged in the second video player, each grid in the multi-grid page correspondingly plays a rendering video corresponding to each path of field video and rendering video signal, the first video player is used for playing a video selected by a user in the multi-grid page, so that decoding resource consumption of user terminal equipment is reduced, the user can see different angles of different scenes in a live broadcast field at any time on the user's own player, really feel multi-view angles, broadcasting rights are given to the user's own, the user's own broadcasting feeling can be experienced, and the viewing angles can be switched at will.
Description
Technical Field
The invention relates to the technical field of digital information transmission, in particular to video information transmission and monitoring, and especially relates to a multi-machine-position free view angle broadcasting guiding method and system.
Background
In the age of the development of multimedia surge nowadays, the requirements of spectators on daily viewing modes are gradually increased, and the spectators are pursuing high-quality and creative looks and feel and more realistic field immersion interactions.
For viewers, the manner and experience of live viewing has evolved: in the twenty-years or even longer, the viewer needs to schedule the program according to a fixed program schedule when watching the live program, so that the viewer can watch the favorite program at a preset time, and only some basic controls such as volume, brightness and channel change operation can be performed on the program being watched, not to mention interaction with a host or other viewers, but the most critical is that the viewer can only watch the video provided by the television station, and the viewing angle, lens and scene are already processed by the director's selection, so that the range of the viewer is greatly limited when watching the live content.
Therefore, there is a need for a multi-position free view broadcasting method and system that can improve the user's selectivity, allow viewers to realize real multi-view viewing experience, reduce the user decoding resource consumption, and reduce the user terminal equipment requirement.
Disclosure of Invention
In view of the above problems, the present invention aims to provide a multi-machine-position free view angle broadcasting method and system, so as to solve the problems of greatly limited range, waste of decoding resources and high requirement parameters of user terminal equipment when a viewer views live contents.
The invention provides a multi-machine-position free view angle broadcasting guiding method, which comprises the following steps:
each path of field video acquired by multiple machine positions is sent to a preset guide broadcasting station, a multi-picture synthesizer and a distribution server;
Audio and video packaging is carried out on the live video and the live collected audio through the broadcasting guide station to form an acoustic signal and a rendering video signal, and the acoustic signal and the rendering video signal are input into the multi-picture synthesizer and the distribution server;
Carrying out multi-picture synthesis on each path of received live video and the rendering video signal through the multi-picture synthesizer, and matching the acoustic signals to form a multi-picture video signal; wherein the multi-picture video signal comprises a first video player signal and a second video player signal;
Transmitting the first video player signal and the second video player signal to a user terminal through the distribution server to present video in the first video player and the second video player; the second video player is provided with a multi-grid page, each grid in the multi-grid page is used for correspondingly playing each path of live video and the rendered video corresponding to the rendered video signal, and the first video player is used for playing the video selected by the user on the multi-grid page.
Preferably, the first video player plays the rendered video by default.
Preferably, in audio-visual packaging of the live video and live acquired audio to form an acoustic signal and rendering a video signal,
Video packaging includes video selection and processing, including:
intercepting visual angle videos of a preset angle from the field video as required, and splicing all the visual angle videos in preset time to form a high-specification video;
and rendering the high-specification video in a preset mode to form a rendered video signal.
Preferably, the process of performing multi-picture synthesis on each path of the received live video and the rendered video signal by the multi-picture synthesizer and matching the acoustic signal to form a multi-picture video signal includes:
decoding the live video and the rendered video signals to form various paths of video data; wherein, each path of video data comprises all specification information in the path of video; the specification information comprises camera points, preset transverse resolution and preset longitudinal resolution;
Scaling video decoding data in each path of video data based on the preset transverse resolution and the preset longitudinal resolution to form scaled video data;
encoding the scaled video data to form a scaled video encoding, and associating the scaled video encoding with an identification code of each compartment of the first video player and the second video player to form a multi-picture video signal.
Preferably, the process of transmitting the first video player signal and the second video player signal to the user terminal through the distribution server to present video in the first video player and the second video player includes:
Transmitting the first video player signal and the second video player signal to a terminal of the user through CDN service based on an encoding protocol;
The software on the terminal divides a main screen of the terminal into a first display and a second display; the first display displays the first video player, and the second display displays the second video player.
The invention also provides a multi-machine-position free view angle guiding and broadcasting system, which realizes the multi-machine-position free view angle guiding and broadcasting method as described above, and comprises the following steps:
The video acquisition module is used for acquiring each path of video through the multi-camera, and transmitting each path of field video acquired by the multi-camera to a preset broadcasting guide table, a multi-picture synthesizer and a distribution server;
The broadcasting guiding station is used for carrying out audio and video packaging on the live video and the live collected audio to form an acoustic signal and a rendering video signal, and inputting the acoustic signal and the rendering video signal into the multi-picture synthesizer and the distribution server;
A multi-picture synthesizer for multi-picture synthesizing the received live video and the rendered video signal, and cooperating with the acoustic signal to form a multi-picture video signal; wherein the multi-picture video signal comprises a first video player signal and a second video player signal;
A distribution server for transmitting the first video player signal and the second video player signal to a user terminal to present video in the first video player and the second video player; the second video player is provided with a multi-grid page, each grid in the multi-grid page is used for correspondingly playing each path of live video and the rendered video corresponding to the rendered video signal, and the first video player is used for playing the video selected by the user on the multi-grid page.
Preferably, the first video player plays the rendered video by default.
Preferably, the guide table is used for the media player comprising a selection module and a rendering module;
The selection module is used for intercepting visual angle videos of a preset angle from the field videos as required, and splicing all the visual angle videos in preset time to form high-specification videos;
the rendering module is used for performing rendering of a preset mode on the high-specification video to form a rendered video signal.
Preferably, the multi-picture synthesizer includes a decoding module, a scaling module, and a corresponding module; wherein,
The decoding module is used for decoding the live video and the rendering video signals to form video data of each path; wherein, each path of video data comprises all specification information in the path of video; the specification information comprises camera points, preset transverse resolution and preset longitudinal resolution;
The scaling module is used for scaling the video decoding data in each path of video data based on the preset transverse resolution and the preset longitudinal resolution to form scaled video data;
The corresponding module is used for encoding the scaled video data to form a scaled video code, and the scaled video code is corresponding to the identification code of each compartment of the first video player and the second video player to form a multi-picture video signal.
Preferably, the distribution server comprises a data transmission module and software on a terminal; wherein,
The data sending module is used for sending the first video player signal and the second video player signal to the terminal of the user through CDN service based on an encoding protocol;
The software on the terminal divides a main screen of the terminal into a first display and a second display; the first display displays the first video player, and the second display displays the second video player.
As can be seen from the above technical solutions, the multi-machine-position free view broadcasting method provided by the present invention firstly transmits each path of live video collected by multiple machine positions to a preset broadcasting guiding table, a multi-picture synthesizer and a distributing server, then packages the live video and the audio collected by the live video through the broadcasting guiding table to form an acoustic signal and a rendering video signal, inputs the acoustic signal and the rendering video signal into the multi-picture synthesizer and the distributing server, synthesizes the received each path of live video and rendering video signal through the multi-picture synthesizer, and cooperates with the acoustic signal to form a multi-picture video signal, then transmits the first video player signal and the second video player signal to a user terminal through the distributing server to display the video in the first video player and the second video player, the second video player is provided with a multi-grid page, each grid in the multi-grid page correspondingly plays each path of live video and the rendering video corresponding to the rendering video signal, and the first video player is used for playing the video selected by the user on the multi-grid page, so that the user clicks the position of displaying one path of video of the multi-picture video signal on the terminal equipment, connects with one path of video of the distribution server, watches as a second path of video signal without decoding all videos on the terminal equipment, reduces the decoding resource consumption of the user terminal equipment, reduces the performance requirement on the user terminal equipment, improves the number and quality of videos which the user can watch, and really enables the audience to feel multiple viewing angles on the player (such as a mobile phone, a tablet or a PC end) of the user at any time to watch different scenes in one live broadcast, the viewing experience of audience is improved, the broadcasting guide right is given to the user, so that the audience can watch the audience, and the audience can experience the feeling of broadcasting guide, and the viewing angle can be switched at will.
Drawings
Other objects and attainments together with a more complete understanding of the invention will become apparent and appreciated by referring to the following description taken in conjunction with the accompanying drawings. In the drawings:
FIG. 1 is a flow chart of a multi-machine-position free view guided broadcast method according to an embodiment of the invention;
FIG. 2 is a diagram illustrating a multi-machine-position free view multicast method according to an embodiment of the present invention;
Fig. 3 is a schematic diagram of a multi-camera free view multicast system according to an embodiment of the present invention.
Detailed Description
For the programs being watched by the audience, only some basic controls such as volume, brightness and channel switching operation can be performed, interaction with a host or other audiences is difficult, the audience can only watch videos provided by a television station, and the viewing angles, the shots and the scenes are selected and processed by a broadcasting station, so that the range of the audience is greatly limited when watching live contents, and the audience can switch the viewing angles by switching channels in time, so that the requirement on a user terminal is high, and multiple encoding and decoding are needed.
In view of the foregoing, the present invention provides a multi-machine-position free view angle broadcasting method and system, and the following detailed description will describe specific embodiments of the present invention with reference to the accompanying drawings.
In order to illustrate the multi-machine-position free view angle broadcasting method and system provided by the invention, fig. 1 to fig. 3 show exemplary labeling of the embodiments of the invention.
The following description of the exemplary embodiment(s) is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. Techniques and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate.
As shown in fig. 1 and fig. 2 together, the multi-machine-position free view angle broadcasting method provided by the invention includes:
S1: each path of field video acquired by multiple machine positions is sent to a preset guide broadcasting station, a multi-picture synthesizer and a distribution server;
S2: audio and video packaging is carried out on the live video and the live collected audio through the broadcasting guide station to form an acoustic signal and a rendering video signal, and the acoustic signal and the rendering video signal are input into the multi-picture synthesizer and the distribution server;
s3: carrying out multi-picture synthesis on each path of received live video and the rendering video signal through the multi-picture synthesizer, and matching the acoustic signals to form a multi-picture video signal; wherein the multi-picture video signal comprises a first video player signal and a second video player signal;
S4: transmitting the first video player signal and the second video player signal to a user terminal through the distribution server to present video in the first video player and the second video player; the second video player is provided with a multi-grid page, each grid in the multi-grid page is used for correspondingly playing each path of live video and the rendered video corresponding to the rendered video signal, and the first video player is used for playing the video selected by the user on the multi-grid page.
In this embodiment, step S1 is a process of sending each path of field video collected by multiple camera positions to a preset broadcasting guide table, a multi-picture synthesizer and a distribution server, where each path of video collected by multiple camera positions is output signals V 1 to V n shot by a field camera, that is, for a certain performance scene, the camera is respectively erected at multiple point positions, so as to form field videos V 1 to V n of each view angle.
In this embodiment, step S2 is a process of performing audio-video packaging on the live video and the audio acquired on the live by the broadcasting station to form an acoustic signal and a rendering video signal, and inputting the acoustic signal and the rendering video signal into the multi-picture synthesizer and the distribution server; after each path of field video is respectively sent to a broadcasting guiding station, a multi-picture synthesizer and a distribution server, the broadcasting guiding station processes each path of video, then the processed video is added with audio, and in the process of carrying out audio and video packaging on the field video and the audio acquired on site to form an acoustic signal and a render video signal, the video packaging comprises video selection and processing, and comprises the following steps:
S21: intercepting visual angle videos of a preset angle from the field video as required, and splicing all the visual angle videos in preset time to form a high-specification video;
s22: and rendering the high-specification video in a preset mode to form a rendered video signal.
In other words, the signals V 1 to V n are input to the broadcasting guide station, the broadcasting guide station outputs a path of V PGM signal through broadcasting guide switching, and meanwhile, the audio signal a is embedded into the V PGM signal to form a (V PGM +a) signal (the video carries the sound signal).
The specific selection and processing mode is not particularly limited, and the selection is automatically switched to the video with the best viewing angle for the client in time, and the final video formed in continuous automatic switching is a high-specification video.
In this embodiment, step S3 is a process of performing multi-picture synthesis on each path of received live video and rendered video signals by a multi-picture synthesizer, and matching with an acoustic signal to form a multi-picture video signal; wherein the multi-picture video signal comprises a first video player signal and a second video player signal.
The process of performing multi-picture synthesis on each path of received live video and the rendered video signal through the multi-picture synthesizer and matching the acoustic signal to form a multi-picture video signal includes:
s31: decoding the live video and the rendered video signals to form various paths of video data; wherein, each path of video data comprises all specification information in the path of video; the specification information comprises camera points, preset transverse resolution and preset longitudinal resolution;
S32: scaling video decoding data in each path of video data based on the preset transverse resolution and the preset longitudinal resolution to form scaled video data;
s33: encoding the scaled video data to form a scaled video encoding, and associating the scaled video encoding with an identification code of each compartment of the first video player and the second video player to form a multi-picture video signal.
The process simply adds the V 1 to V n signals and the V PGM signals to the multi-picture synthesizer, and the multi-picture synthesizer scales the signals according to the same size scale, for example, scales the videos, outputs the scaled videos in nine-grid form and sixteen-grid form, and outputs one (V mix+A) signal to the distribution server (the V mix signal is a multi-picture video signal comprising each signal picture of V 1 to V n and V PGM), one video picture of V mix corresponds to the first video player, each video of V mix corresponds to the identification code of each cell of the second video player, and each video corresponds to each cell of the second video player.
Step S4, a process of encoding the scaled video data to form a scaled video code, and corresponding the scaled video code to the identification code of each compartment of the first video player and the second video player to form a multi-picture video signal; wherein transmitting, by the distribution server, the first video player signal and the second video player signal to a user terminal to render video in the first video player and the second video player, comprises:
S41: transmitting the first video player signal and the second video player signal to a terminal of the user through CDN service based on an encoding protocol;
S42: the software on the terminal divides a main screen of the terminal into a first display and a second display; the first display displays the first video player, and the second display displays the second video player.
In this embodiment, the multipath signals V 1 to V n、VPGM and the V mix +a are transmitted to the distribution server, the distribution server displays the V mix +a and the V 1 to V n、VPGM signals in each compartment of the second video player carried by the second display, and the distribution server displays any one of the V mix +a and the V 1 to V n、VPGM signals to the first video player according to a request from a user at the terminal, so as to display the signals on the first display.
When the user uses the function for the first time, the system can default to select to enable the first video player in the first display to play the rendered video, namely the V PGM signal, or default to play any one of the V 1 to V n、VPGM signals, and the system can be freely selected according to the live broadcast condition. The second video player plays V mix + a, i.e. the summary and sound of all the signals. Therefore, the sound heard by the user comes only from the V mix picture, so the sound of the picture is not switched along with the switching of the user, but the sound can be converted into the sound carried by one of the V 1 to V n、VPGM signals if required.
The V mix signal played by the second video player in the second display of the user terminal is a multi-picture composite signal, which includes all dynamic video signals of V 1 to V n plus V PGM signals, if the user wants to watch any one of the signals V 1 to V n、VPGM, the user can click on the corresponding video window on the second video player picture, different video windows have respective coordinate value position information (identification codes), the different coordinate value position information is returned to the distribution server, and the distribution server requests to select the corresponding video according to the range of the coordinate values.
The video replacement of the first video player is realized by returning the position information of different coordinate values of the second video player window to the distribution server, and pushing the position information by the distribution server so as to enable the second video player to perform video replacement.
In addition, the details of the V mix signal video, including the V mix video resolution, the resolution of V 1 to V n at the Vmix signal, and the resolution of the row and column margins are obtained by the distribution server. The distribution server firstly obtains the width of the user equipment under the mobile equipment environment of the user, and calculates the actual video player parameters in an equal ratio. The calculation is as follows:
The transverse resolution of the V mix signal, and the transverse resolution of the single-path signal under the V mix signal;
The longitudinal resolution of the V mix signal and the longitudinal resolution of the single-path signal under the V mix signal;
Row spacing resolution of the V mix signal, column spacing resolution of the V mix signal;
W is the screen width of the mobile equipment of the user;
The detailed parameters of the individual sub-sites under the user's mobile device are available from the above data:
Width: ; high:/> ；
Row margin: ; column margin: /(I) 。
According to the parameter distribution server, a sub-machine position layout diagram of the V mix signal with equal proportion reduced can be obtained, and each equal-area black curtain cloth with the corresponding sub-machine position signal mark is placed into the sub-machine position layout diagram to occupy the space, and is laid below the V mix signal video player.
Meanwhile, the mixing mode of the video of the V mix signal is set as a color filtering mode, and the video signal is combined with the primary color of the video player and the mixed color of the black curtain at the bottom, so that the color is displayed on the picture on the black curtain only, and the whole detail is more attractive.
And monitoring user behaviors of black curtains below the V mix signal video player, and triggering a video signal switching method once a user clicks the curtain, so as to realize accurate switching of the V 1 to V n signals according to the corresponding sub-position identification generated for the block of the curtain.
In this embodiment, at the client page end, coordinate value position information is bound to each preview frame, each coordinate value position information corresponds to a play address, when the client clicks on the page, a certain play address is selected, after the play address information is transmitted back to the distribution server through the network, the client pulls video data in the first video player signal and the second video player signal from the play address to the first player and the second player, and requests a compartment in the corresponding player to play.
As described above, the multi-machine-position free view broadcasting method provided by the invention comprises the steps of firstly, transmitting each path of field video acquired by multiple machine positions to a preset broadcasting guiding platform, a multi-picture synthesizer and a distribution server, then, carrying out audio and video packaging on the field video and the audio acquired by the field to form an acoustic signal and a rendering video signal through the broadcasting guiding platform, inputting the acoustic signal and the rendering video signal into the multi-picture synthesizer and the distribution server, carrying out multi-picture synthesis on each path of received field video and rendering video signal through the multi-picture synthesizer, and matching with the acoustic signal to form a multi-picture video signal, then, transmitting a first video player signal and a second video player signal to a user terminal through the distribution server to display the video in the first video player and the second video player, wherein a multi-grid page is arranged in the second video player, each compartment in the multi-compartment page correspondingly plays each channel of live video and rendered video corresponding to the rendered video signal, and the first video player is used for playing the video selected by the user in the multi-compartment page, so that the user clicks the position of displaying one channel of video of the multi-picture video signal on the terminal equipment, connects one channel of video of the distribution server and watches as a second channel of video signal without decoding all videos on the terminal equipment, reduces the decoding resource consumption of the user terminal equipment, reduces the performance requirement on the user terminal equipment, improves the quantity and quality of videos which can be watched by the user, and the user can watch different angles of different scenes in a live broadcast on own player (such as a mobile phone, a tablet or a PC end) at any time, really enables a spectator to feel 'multi-view', improves the audiovisual experience of spectators, the guiding and broadcasting rights are given to the user, so that the user can watch the user, and can experience the feeling of guiding and broadcasting, and the viewing angle can be switched at will.
As shown in fig. 3, the present invention further provides a multi-machine-position free view angle guiding and broadcasting system 100, which implements the multi-machine-position free view angle guiding and broadcasting method as described above, including:
The video acquisition module 110 is configured to acquire each path of video through a multi-camera, and send each path of field video acquired by multiple cameras to a preset broadcasting guide table, a multi-picture synthesizer and a distribution server;
a broadcasting guide 120, configured to perform audio-video packaging on the live video and the live collected audio to form an acoustic signal and a rendered video signal, and input the acoustic signal and the rendered video signal into the multi-picture synthesizer and the distribution server;
A multi-picture synthesizer 130, configured to perform multi-picture synthesis on each path of received live video and the rendered video signal, and cooperate with the acoustic signal to form a multi-picture video signal; wherein the multi-picture video signal comprises a first video player signal and a second video player signal;
A distribution server 140 for transmitting the first video player signal and the second video player signal to a user terminal to present video in the first video player and the second video player; the second video player is provided with a multi-grid page, each grid in the multi-grid page is used for correspondingly playing each path of live video and the rendered video corresponding to the rendered video signal, and the first video player is used for playing the video selected by the user on the multi-grid page.
Wherein the first video player plays the rendered video by default.
In this embodiment, the video capturing module 110 includes a plurality of cameras, which are respectively disposed at different points to capture video.
The director 120 is configured to include a selection module 121 and a rendering module 122;
The selecting module 121 is configured to intercept, as required, the view angle videos of the preset angle from the live video, and splice all the view angle videos in a preset time to form a high-specification video;
the rendering module 122 is configured to perform a rendering of the high-specification video in a preset mode to form a rendered video signal.
The multi-picture compositor 130 includes a decoding module 131, a scaling module 132, and a corresponding module 133; wherein,
The decoding module 131 is configured to decode the live video and the rendered video signal to form video data of each path; wherein, each path of video data comprises all specification information in the path of video; the specification information comprises camera points, preset transverse resolution and preset longitudinal resolution;
the scaling module 132 is configured to scale the video decoding data in each path of video data based on the preset lateral resolution and the preset longitudinal resolution to form scaled video data;
The corresponding module 133 is configured to encode the scaled video data to form a scaled video code, and to correspond the scaled video code to an identification code of each compartment of the first video player and the second video player to form a multi-picture video signal.
The distribution server 140 includes a data transmission module 141 and software 150 on the terminal; wherein,
The data sending module 141 is configured to send the first video player signal and the second video player signal to the terminal of the user through CDN service based on an encoding protocol;
The software 150 on the terminal divides the main screen of the terminal into a first display and a second display; the first display displays the first video player, and the second display displays the second video player.
The specific embodiments refer to the embodiments of the multi-machine-position free view angle guiding method, and are not described herein.
As described above, the multi-camera free view broadcasting system provided by the present invention firstly transmits each path of live video acquired by multiple cameras to the broadcasting station 120, the multi-picture synthesizer 130 and the distribution server 140 based on the video acquisition module 110, then packages the live video and the audio acquired by the live video to form an acoustic signal and a rendering video signal through the broadcasting station 120, inputs the acoustic signal and the rendering video signal into the multi-picture synthesizer and the distribution server, synthesizes the received each path of live video and rendering video signal through the multi-picture synthesizer 130, and cooperates with the acoustic signal to form a multi-picture video signal, then transmits the first video player signal and the second video player signal to the user terminal through the distribution server 140 to display the video in the first video player and the second video player, the second video player is provided with a multi-grid page, each grid in the multi-grid page correspondingly plays each path of live video and the rendering video corresponding to the rendering video signal, and the first video player is used for playing the video selected by the user on the multi-grid page, so that the user clicks the position of displaying one path of video of the multi-picture video signal on the terminal equipment, connects with one path of video of the distribution server, watches as a second path of video signal without decoding all videos on the terminal equipment, reduces the decoding resource consumption of the user terminal equipment, reduces the performance requirement on the user terminal equipment, improves the number and quality of videos which the user can watch, and really enables the audience to feel multiple viewing angles on the player (such as a mobile phone, a tablet or a PC end) of the user at any time to watch different scenes in one live broadcast, the viewing experience of audience is improved, the broadcasting guide right is given to the user, so that the audience can watch the audience, and the audience can experience the feeling of broadcasting guide, and the viewing angle can be switched at will.
The multi-machine-position free view angle guiding method and system according to the invention are described above by way of example with reference to the accompanying drawings. It will be appreciated by those skilled in the art that various modifications may be made to the multi-player freeview multicasting method and system of the present invention as set forth above without departing from the spirit of the present invention. Accordingly, the scope of the invention should be determined from the following claims.
Claims (10)
1. The multi-machine-position free view angle guiding and broadcasting method is characterized by comprising the following steps of:
each path of field video acquired by multiple machine positions is sent to a preset guide broadcasting station, a multi-picture synthesizer and a distribution server;
Audio and video packaging is carried out on the live video and the live collected audio through the broadcasting guide station to form an acoustic signal and a rendering video signal, and the acoustic signal and the rendering video signal are input into the multi-picture synthesizer and the distribution server;
Carrying out multi-picture synthesis on each path of received live video and the rendering video signal through the multi-picture synthesizer, and matching the acoustic signals to form a multi-picture video signal; wherein the multi-picture video signal comprises a first video player signal and a second video player signal;
Transmitting the first video player signal and the second video player signal to a user terminal through the distribution server to present video in the first video player and the second video player; the second video player is provided with a multi-grid page, each grid in the multi-grid page is used for correspondingly playing each path of live video and the rendered video corresponding to the rendered video signal, and the first video player is used for playing the video selected by the user on the multi-grid page.
2. The multi-machine-position freeview broadcasting method according to claim 1, comprising:
The first video player plays the rendered video by default.
3. The multi-camera freeview broadcasting method according to claim 2, wherein in the process of audio-video packaging the live video and the live collected audio to form an acoustic signal and rendering a video signal,
Video packaging includes video selection and processing, including:
intercepting visual angle videos of a preset angle from the field video as required, and splicing all the visual angle videos in preset time to form a high-specification video;
and rendering the high-specification video in a preset mode to form a rendered video signal.
4. The multi-camera free view broadcasting method of claim 3, wherein the process of multi-picture synthesizing each path of the received live video and the rendered video signal by the multi-picture synthesizer and cooperating with the acoustic signal to form a multi-picture video signal comprises:
decoding the live video and the rendered video signals to form various paths of video data; wherein, each path of video data comprises all specification information in the path of video; the specification information comprises camera points, preset transverse resolution and preset longitudinal resolution;
Scaling video decoding data in each path of video data based on the preset transverse resolution and the preset longitudinal resolution to form scaled video data;
encoding the scaled video data to form a scaled video encoding, and associating the scaled video encoding with an identification code of each compartment of the first video player and the second video player to form a multi-picture video signal.
5. The multi-player freeview streaming method according to claim 4, wherein transmitting the first video player signal and the second video player signal to a user terminal through the distribution server to present video in the first video player and the second video player comprises:
Transmitting the first video player signal and the second video player signal to a terminal of the user through CDN service based on an encoding protocol;
The software on the terminal divides a main screen of the terminal into a first display and a second display; the first display displays the first video player, and the second display displays the second video player.
6. A multi-camera free view director system, wherein the multi-camera free view director method according to claims 1-5 is implemented, comprising:
The video acquisition module is used for acquiring each path of video through the multi-camera, and transmitting each path of field video acquired by the multi-camera to a preset broadcasting guide table, a multi-picture synthesizer and a distribution server;
The broadcasting guiding station is used for carrying out audio and video packaging on the live video and the live collected audio to form an acoustic signal and a rendering video signal, and inputting the acoustic signal and the rendering video signal into the multi-picture synthesizer and the distribution server;
A multi-picture synthesizer for multi-picture synthesizing the received live video and the rendered video signal, and cooperating with the acoustic signal to form a multi-picture video signal; wherein the multi-picture video signal comprises a first video player signal and a second video player signal;
A distribution server for transmitting the first video player signal and the second video player signal to a user terminal to present video in the first video player and the second video player; the second video player is provided with a multi-grid page, each grid in the multi-grid page is used for correspondingly playing each path of live video and the rendered video corresponding to the rendered video signal, and the first video player is used for playing the video selected by the user on the multi-grid page.
7. The multi-camera freeview multicast system according to claim 6, wherein,
The first video player plays the rendered video by default.
8. The multi-machine-site freeview director system of claim 7 wherein the director station is configured to include a pick-up module and a render module;
The selection module is used for intercepting visual angle videos of a preset angle from the field videos as required, and splicing all the visual angle videos in preset time to form high-specification videos;
the rendering module is used for performing rendering of a preset mode on the high-specification video to form a rendered video signal.
9. The multi-view free-view multicast system of claim 8, wherein the multi-picture compositor comprises a decoding module, a scaling module, and a corresponding module; wherein,
The decoding module is used for decoding the live video and the rendering video signals to form video data of each path; wherein, each path of video data comprises all specification information in the path of video; the specification information comprises camera points, preset transverse resolution and preset longitudinal resolution;
The scaling module is used for scaling the video decoding data in each path of video data based on the preset transverse resolution and the preset longitudinal resolution to form scaled video data;
The corresponding module is used for encoding the scaled video data to form a scaled video code, and the scaled video code is corresponding to the identification code of each compartment of the first video player and the second video player to form a multi-picture video signal.
10. The multi-site freeview multicast system according to claim 9, wherein the distribution server includes a data transmission module and software on a terminal; wherein,
The data sending module is used for sending the first video player signal and the second video player signal to the terminal of the user through CDN service based on an encoding protocol;
The software on the terminal divides a main screen of the terminal into a first display and a second display; the first display displays the first video player, and the second display displays the second video player.
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