CN111447460B - Method for applying low-delay network to broadcasting station - Google Patents
Method for applying low-delay network to broadcasting station Download PDFInfo
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- CN111447460B CN111447460B CN202010410904.7A CN202010410904A CN111447460B CN 111447460 B CN111447460 B CN 111447460B CN 202010410904 A CN202010410904 A CN 202010410904A CN 111447460 B CN111447460 B CN 111447460B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/21—Server components or server architectures
- H04N21/218—Source of audio or video content, e.g. local disk arrays
- H04N21/2187—Live feed
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
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Abstract
The invention discloses a method for applying a low-delay network to a broadcasting guide station. The method specifically comprises the following steps: the director joins the channel, creates and joins the interactive live channel, waits for the real members of the channel to join; the anchor main meeting place joins the channel, connect to the media server; the reporter meeting place joins the channel, connect to the media server; media data interaction, wherein the anchor main meeting place and the reporter sub meeting place send audio and video data to a media server, a data transmission protocol is based on udp, and a director sends the audio and video data out through a stream pushing recording server, and can also carry out interaction between the anchor main meeting place and the reporter sub meeting place; the main broadcasting main meeting place, the reporter sub meeting place and the director leave channels, and the background destroys channel information. The invention has the beneficial effects that: the equipment limit is broken through, the participation cost is reduced, and the content form of production/output is richer; the method breaks through the limits of places and time, has the capability of real-time interaction, and greatly improves the user experience.
Description
Technical Field
The invention relates to the technical field related to video communication, in particular to a method for applying a low-delay network to a program director.
Background
With the development of internet technology, the traditional broadcast guidance mode in the radio and television industry is greatly impacted, and live broadcast and site interview which can be realized only by a slightly better mobile phone terminal and a wireless hotspot are not patents of television stations any more.
Media integration and internet are development trends of the broadcasting and television industry, and the existing broadcasting and directing station has the following defects that the first is limited by professional SDI equipment, the second is limited by places and time, and the third is not provided with real-time interaction capability.
Disclosure of Invention
The present invention overcomes the above-mentioned deficiencies in the prior art and provides a method for implementing a low-latency network for a director station that widens and changes the output of the director station.
In order to achieve the purpose, the invention adopts the following technical scheme:
a realization method for applying a low-delay network to a broadcasting guide station specifically comprises the following steps:
(1) the director joins the channel: the method comprises the following steps that a broadcast guide station interacts with an access signaling server, creates and joins an interactive live channel, the access signaling server interacts with a scheduling server to acquire a media server address and returns the address to the broadcast guide station, and the broadcast guide station is connected to the media server and waits for the joining of real members of the channel;
(2) the anchor party joins the channel: the anchor main meeting place and the access signaling server are interacted and added into a channel, the access signaling server and the scheduling server are interacted to obtain a service address of the media server and return the service address to an adding party, and the anchor main meeting place is connected to the media server;
(3) reporter meeting place joining channel: the method for adding channels to the conference rooms of the reporters in a plurality of different areas is the same as the step (2);
(4) media data interaction: when the live broadcast starts, the anchor main meeting place and the reporter sub meeting place send audio and video data to the media server, the data transmission protocol is based on udp, the media server forwards all the media data to the director, the director sends the audio and video data out through the stream pushing recording server, and meanwhile, the interaction between the anchor main meeting place and the reporter sub meeting place can be carried out;
(5) and (4) finishing live broadcast: the main broadcasting main meeting place and the reporter sub meeting place leave the channel, then the director leaves the channel, and finally the background destroys the channel information.
The application of low-delay network to broadcasting station is proposed, and it is an implementation way to apply internet technology to the field of broadcasting and television, and to broaden and change the content production and output. The low-delay network based on the udp can be applied to live broadcast, live interview and interaction scenes such as main reporter connection, multi-meeting-site live broadcast and the like, and all channel participants keep communication links with a media server. All parties selected by the director can interact in real time, and the unselected members serve as low-delay audiences to prepare to be selected to switch into a synthesized live broadcast picture at any time. Besides sending back to each channel of session participants by using a private udp transmission protocol, the live broadcast picture synthesized by the director can also be output by using a television station signal and be watched by audience in front of the television, and can also be pushed to the CDN for internet audience to watch by using a HTTP/RTMP mode and the like. The benefits of applying a low-latency network to a director station are:
1. breaking through the limitation of the equipment
The signal input of the broadcasting station is not limited by professional SDI equipment any more, and common mobile phones, network cameras and other terminals with audio and video acquisition capacity can be used as information sources, so that the participation cost is reduced; and the diversity of the information sources also makes the content format of production/output richer.
2. Breaking place and time limitations
Due to the participation of various mobile terminals, the content production is no longer limited by places, and various emergencies can be dealt with quickly.
3. Transition from live to interactive live
By applying a private data protocol and a low-delay network based on UDP, the low-delay characteristic enables all the participating parties to have the real-time interaction capability, and the user experience is greatly improved.
Preferably, the access signaling server is responsible for the members of the channel of the director to access the network, join the members and leave the channels; the scheduling server distributes the channel members to the most suitable media server nodes according to the geographical positions of the members, the network ip addresses and the server load strategy; the media server is a channel member audio and video data interaction and forwarding node; the said directing broadcast station is used for screening, synthesizing each party's audio and video data of joining channel; the stream pushing and recording server is used for recording, archiving and distributing the content to the CDN; the main broadcasting main meeting place and the reporter sub meeting place are both channel participating members, and the signal acquisition end of the main broadcasting main meeting place and the reporter sub meeting place is a smart phone, a tablet, a network camera, a director or other equipment with audio and video acquisition capacity.
Preferably, in the step (1), the specific operation method is as follows:
(11) the broadcasting guide station interacts with the access signaling server, and creates and joins an interactive live broadcast channel in a manager mode;
(12) the access signaling server interacts with the scheduling server, and the service address of the media server which is most suitable for the connection of the director is obtained according to the current information of the director equipment;
(13) the access signaling server returns the address information of the media server to the director station;
(14) the director connects to the media server and waits for the joining of real members of the channel.
Preferably, in step (11), the generation manner of the live channel ID is randomly generated by the background when joining, or is pre-bound in a fixed channel ID manner according to the device ID of the director.
Preferably, in the step (2), the specific operation method is as follows:
(21) the anchor main meeting place interacts with the access signaling server, and adds in the channel with the appointed ID number;
(22) the access signaling server interacts with the scheduling server to obtain the service address of the media server which is most suitable for the connection of the anchor meeting place;
(23) the access signaling server returns the address of the media server to the joining party;
(24) the anchor meeting place is connected to a media server.
Preferably, in the step (4), the specific operation method is as follows:
(41) when the live broadcast starts, a main broadcaster conference room collects and codes the field audio/video data, packages the data in a private format and sends the data to a media server, and a data transmission protocol is based on udp;
(42) the reporter meeting place connected to the media server starts to collect and encode the field audio and video data, the data are packaged by a private format and are sent to the media server, and a data transmission protocol is based on udp;
(43) the media server transmits the media data of all the anchor meeting places and the reporter meeting places to the director;
(44) the director sends the data of the main broadcaster meeting place back to the media server;
(45) the media server forwards the audio and video data from the director station to the reporter meeting place, so that the reporter meeting place can see the picture of the main broadcasting meeting place in real time;
(46) the broadcasting station simultaneously sends the audio and video data of the main broadcasting meeting place through television signals, and audiences of the television station watch the audio and video data in real time;
(47) and the director platform simultaneously pushes the audio and video data of the main broadcaster meeting place to the CDN through an RTMP/HLS live broadcast protocol, and the Internet audience watches the CDN through RTMP/HLS streams in real time.
Preferably, in step (4), the specific operation method for interaction between the anchor meeting place and the reporter meeting place is as follows:
(a) during live broadcasting, a main broadcasting main meeting place invites one or more reporters to be connected with the sub meeting places, and a broadcasting guide platform mixes and compiles audios and videos of an invited party and the main broadcasting main meeting place and sends the audios and videos back to a media server;
(b) the media server forwards the composite data from the director to all reporter meeting places connected with the media server;
(c) the invited reporter meeting place and the anchor meeting place interact through a low-delay network based on the udp private data protocol;
(d) the television station and the CDN synchronously receive and distribute the synthesized data;
(e) the main broadcasting main meeting place is connected with the reporter branch meeting place, and the director synchronously updates the synthesized data.
The invention has the beneficial effects that: the equipment limitation is broken through, the participation cost is reduced, and the diversity of the information sources also enriches the content forms of production/output; the limit of places and time is broken through, and various emergency events can be quickly dealt with; the conversion from live broadcast to interactive live broadcast is realized, and the characteristic of low delay enables all parties involved to have real-time interactive capability, thereby greatly improving the user experience.
Drawings
Fig. 1 is a network architecture diagram of the present invention.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
In the embodiment shown in fig. 1, a method for implementing a low latency network to a director station includes the following steps:
(1) the director joins the channel: the method comprises the following steps that a broadcast guide station interacts with an access signaling server, creates and joins an interactive live channel, the access signaling server interacts with a scheduling server to acquire a media server address and returns the address to the broadcast guide station, and the broadcast guide station is connected to the media server and waits for the joining of real members of the channel; the specific operation method comprises the following steps:
(11) the broadcasting guide station interacts with the access signaling server, and creates and joins an interactive live broadcast channel in a manager mode;
(12) the access signaling server interacts with the scheduling server, and the service address of the media server which is most suitable for the connection of the director is obtained according to the current information of the director equipment;
(13) the access signaling server returns the address information of the media server to the director station;
(14) the director connects to the media server and waits for the joining of real members of the channel.
(2) The anchor party joins the channel: the anchor main meeting place and the access signaling server are interacted and added into a channel, the access signaling server and the scheduling server are interacted to obtain a service address of the media server and return the service address to an adding party, and the anchor main meeting place is connected to the media server; the specific operation method comprises the following steps:
(21) the anchor main meeting place interacts with the access signaling server, and adds in the channel with the appointed ID number;
(22) the access signaling server interacts with the scheduling server to obtain the service address of the media server which is most suitable for the connection of the anchor meeting place;
(23) the access signaling server returns the address of the media server to the joining party;
(24) the anchor meeting place is connected to a media server.
(3) Reporter meeting place joining channel: the method for adding channels to the conference rooms of the reporters in a plurality of different areas is the same as the step (2);
(4) media data interaction: when the live broadcast starts, the anchor main meeting place and the reporter sub meeting place send audio and video data to the media server, the data transmission protocol is based on udp, the media server forwards all the media data to the director, the director sends the audio and video data out through the stream pushing recording server, and meanwhile, the interaction between the anchor main meeting place and the reporter sub meeting place can be carried out; the specific operation method comprises the following steps:
(41) when the live broadcast starts, a main broadcaster conference room collects and codes the field audio/video data, packages the data in a private format and sends the data to a media server, and a data transmission protocol is based on udp;
(42) the reporter meeting place connected to the media server starts to collect and encode the field audio and video data, the data are packaged by a private format and are sent to the media server, and a data transmission protocol is based on udp;
(43) the media server transmits the media data of all the anchor meeting places and the reporter meeting places to the director;
(44) the director sends the data of the main broadcaster meeting place back to the media server;
(45) the media server forwards the audio and video data from the director station to the reporter meeting place, so that the reporter meeting place can see the picture of the main broadcasting meeting place in real time;
(46) the broadcasting station simultaneously sends the audio and video data of the main broadcasting meeting place through television signals, and audiences of the television station watch the audio and video data in real time;
(47) and the director platform simultaneously pushes the audio and video data of the main broadcaster meeting place to the CDN through an RTMP/HLS live broadcast protocol, and the Internet audience watches the CDN through RTMP/HLS streams in real time.
The specific operation method for interaction between the anchor meeting place and the reporter meeting place comprises the following steps:
(a) during live broadcasting, a main broadcasting main meeting place invites one or more reporters to be connected with the sub meeting places, and a broadcasting guide platform mixes and compiles audios and videos of an invited party and the main broadcasting main meeting place and sends the audios and videos back to a media server;
(b) the media server forwards the composite data from the director to all reporter meeting places connected with the media server;
(c) the invited reporter meeting place and the anchor meeting place interact through a low-delay network based on the udp private data protocol;
(d) the television station and the CDN synchronously receive and distribute the synthesized data;
(e) the main broadcasting main meeting place is connected with the reporter branch meeting place, and the director synchronously updates the synthesized data.
(5) And (4) finishing live broadcast: the main broadcasting main meeting place and the reporter sub meeting place leave the channel, then the director leaves the channel, and finally the background destroys the channel information.
Wherein: the access signaling server is responsible for the access of the members of the channel of the director to the network, the joining and leaving of the members; the dispatching server distributes the channel members to the most suitable media server nodes according to the geographical positions of the members, the network ip addresses and the server load strategies; the media server is a channel member audio and video data interaction and forwarding node; the director is used for screening and synthesizing audio and video data of each party of the added channel; the stream pushing and recording server is used for recording, archiving and distributing the content to the CDN; the anchor main meeting place and the reporter sub meeting place are both channel participating members, and the signal acquisition end of the anchor main meeting place and the reporter sub meeting place is a smart phone, a tablet, a network camera, a director or other equipment with audio and video acquisition capability.
The application of low-delay network to broadcasting station is proposed, and it is an implementation way to apply internet technology to the field of broadcasting and television, and to broaden and change the content production and output. The low-delay network based on the udp can be applied to live broadcast, live interview and interaction scenes such as main reporter connection, multi-meeting-site live broadcast and the like, and all channel participants keep communication links with a media server. All parties selected by the director can interact in real time, and the unselected members serve as low-delay audiences to prepare to be selected to switch into a synthesized live broadcast picture at any time. Besides sending back to each channel of session participants by using a private udp transmission protocol, the live broadcast picture synthesized by the director can also be output by using a television station signal and be watched by audience in front of the television, and can also be pushed to the CDN for internet audience to watch by using a HTTP/RTMP mode and the like. The benefits of applying a low-latency network to a director station are:
1. breaking through the limitation of the equipment
The signal input of the broadcasting station is not limited by professional SDI equipment any more, and common mobile phones, network cameras and other terminals with audio and video acquisition capacity can be used as information sources, so that the participation cost is reduced; and the diversity of the information sources also makes the content format of production/output richer.
2. Breaking place and time limitations
Due to the participation of various mobile terminals, the content production is no longer limited by places, and various emergencies can be dealt with quickly.
3. Transition from live to interactive live
By applying a private data protocol and a low-delay network based on UDP, the low-delay characteristic enables all the participating parties to have the real-time interaction capability, and the user experience is greatly improved.
Claims (4)
1. A method for applying a low-delay network to a broadcasting guide station is characterized by comprising the following steps:
(1) the director joins the channel: the method comprises the following steps that a broadcast guide station interacts with an access signaling server, creates and joins an interactive live channel, the access signaling server interacts with a scheduling server to acquire a media server address and returns the address to the broadcast guide station, and the broadcast guide station is connected to the media server and waits for the joining of real members of the channel; the specific operation method comprises the following steps:
(11) the broadcasting guide station interacts with the access signaling server, and creates and joins an interactive live broadcast channel in a manager mode; the generation mode of the live channel ID is that the live channel ID is randomly generated by a background when the live channel ID is added, or the live channel ID is pre-bound in a fixed channel ID mode according to the equipment ID of the director;
(12) the access signaling server interacts with the scheduling server, and the service address of the media server which is most suitable for the connection of the director is obtained according to the current information of the director equipment;
(13) the access signaling server returns the address information of the media server to the director station;
(14) the director is connected to the media server and waits for the real members of the channel to join;
(2) the anchor party joins the channel: the anchor main meeting place and the access signaling server are interacted and added into a channel, the access signaling server and the scheduling server are interacted to obtain a service address of the media server and return the service address to an adding party, and the anchor main meeting place is connected to the media server;
(3) reporter meeting place joining channel: the method for adding channels to the conference rooms of the reporters in a plurality of different areas is the same as the step (2);
(4) media data interaction: when the live broadcast starts, the anchor main meeting place and the reporter sub meeting place send audio and video data to the media server based on a udp data transmission protocol, the media server forwards all the media data to the broadcasting guide platform, the broadcasting guide platform sends the audio and video data out through the stream pushing recording server, and meanwhile, the interaction between the anchor main meeting place and the reporter sub meeting place can be carried out; the specific operation method for interaction between the anchor meeting place and the reporter meeting place comprises the following steps:
(a) during live broadcasting, a main broadcasting main meeting place invites one or more reporters to be connected with the sub meeting places, and a broadcasting guide platform mixes and compiles audios and videos of an invited party and the main broadcasting main meeting place and sends the audios and videos back to a media server;
(b) the media server forwards the composite data from the director to all reporter meeting places connected with the media server;
(c) the invited reporter meeting place and the anchor meeting place interact through a low-delay network based on the udp private data protocol;
(d) the television station and the CDN synchronously receive and distribute the synthesized data;
(e) the main broadcasting main meeting place is connected with the reporter branch meeting place, and the director synchronously updates the synthetic data;
(5) and (4) finishing live broadcast: the main broadcasting main meeting place and the reporter sub meeting place leave the channel, then the director leaves the channel, and finally the background destroys the channel information.
2. The method as claimed in claim 1, wherein said access signaling server is responsible for the access of members of the channel of the broadcast station to the network, the joining of members, and the leaving of channels; the scheduling server distributes the channel members to the most suitable media server nodes according to the geographical positions of the members, the network ip addresses and the server load strategy; the media server is a channel member audio and video data interaction and forwarding node; the said directing broadcast station is used for screening, synthesizing all kinds of audio and video data of joining the channel; the stream pushing and recording server is used for recording, archiving and distributing the content to the CDN; the main broadcasting main meeting place and the reporter sub meeting place are both channel participating members, and the signal acquisition end of the main broadcasting main meeting place and the reporter sub meeting place is a smart phone, a tablet, a network camera, a director or other equipment with audio and video acquisition capacity.
3. A method as claimed in claim 1 or 2, wherein in step (2), the specific operation method is as follows:
(21) the anchor main meeting place interacts with the access signaling server, and adds in the channel with the appointed ID number;
(22) the access signaling server interacts with the scheduling server to obtain the service address of the media server which is most suitable for the connection of the anchor meeting place;
(23) the access signaling server returns the address of the media server to the joining party;
(24) the anchor meeting place is connected to a media server.
4. A method as claimed in claim 1 or 2, wherein in step (4), the specific operation method is as follows:
(41) when the live broadcast starts, a main broadcaster conference room collects and codes the field audio/video data, packages the data in a private format and sends the data to a media server, and a data transmission protocol is based on udp;
(42) the reporter meeting place connected to the media server starts to collect and encode the field audio and video data, the data are packaged by a private format and are sent to the media server, and a data transmission protocol is based on udp;
(43) the media server transmits the media data of all the anchor meeting places and the reporter meeting places to the director;
(44) the director sends the data of the main broadcaster meeting place back to the media server;
(45) the media server forwards the audio and video data from the director station to the reporter meeting place, so that the reporter meeting place can see the picture of the main broadcasting meeting place in real time;
(46) the broadcasting station simultaneously sends the audio and video data of the main broadcasting meeting place through television signals, and audiences of the television station watch the audio and video data in real time;
(47) and the director platform simultaneously pushes the audio and video data of the main broadcaster meeting place to the CDN through an RTMP/HLS live broadcast protocol, and the Internet audience watches the CDN through RTMP/HLS streams in real time.
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