CN110971966A - IPTV platform based channel fast switching method - Google Patents

IPTV platform based channel fast switching method Download PDF

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Publication number
CN110971966A
CN110971966A CN201811136199.5A CN201811136199A CN110971966A CN 110971966 A CN110971966 A CN 110971966A CN 201811136199 A CN201811136199 A CN 201811136199A CN 110971966 A CN110971966 A CN 110971966A
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CN
China
Prior art keywords
channel
server
top box
switching
media stream
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201811136199.5A
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Chinese (zh)
Inventor
王建全
张伟
赵耀峰
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Aishang Tv Medium Beijing Co ltd
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Aishang Tv Medium Beijing Co ltd
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Priority to CN201811136199.5A priority Critical patent/CN110971966A/en
Publication of CN110971966A publication Critical patent/CN110971966A/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
    • H04N21/4383—Accessing a communication channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/231—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
    • 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
    • H04N21/6437—Real-time Transport Protocol [RTP]

Abstract

The invention belongs to the technical field of channel switching, and particularly relates to a method for quickly switching channels based on an IPTV platform. The method for quickly switching the channels comprises the following steps: acquiring a live broadcast list of an IPTV live broadcast channel, and generating server information corresponding to the live broadcast list; the server sends the cached media stream content of the corresponding live channel to the set-top box in a unicast media stream mode; and after receiving the unicast media stream content, the set top box starts decoding and quickly switches to the corresponding watching channel in the live list. After receiving the channel switching information of the user, the set top box requests a unicast media stream to a server corresponding to the channel information, and successfully establishes communication between the set top box and the server. And the server continuously sends the unicast media stream to the set-top box, and the set-top box decodes and quickly switches to the corresponding watching channel in the live broadcast list after receiving the unicast media stream.

Description

IPTV platform based channel fast switching method
Technical Field
The invention belongs to the technical field of channel switching, and particularly relates to a method for quickly switching channels based on an IPTV platform.
Background
The IPTV is a brand-new technology which integrates the technologies of Internet, multimedia, communication and the like and provides various interactive services including live broadcast, on-demand broadcast, review, time shift and the like of digital televisions for home users.
Unlike traditional cable television and digital television, in an IPTV system, a live program can only receive a corresponding media stream after joining a multicast group. The image coding of a media stream contains 3 components: i-frames, P-frames and B-frames. I frame: which itself can be decompressed into a single complete picture by the video decompression algorithm. P frame: it is necessary to generate a complete picture with reference to an I frame or B frame preceding it. B frame: a complete picture is generated with reference to the I or P frame immediately preceding it and the P frame following it.
The set-top box can only start decoding after receiving the I frame, and the picture is displayed. The different time when the set-top box joins the multicast group leads to the received multicast media stream having randomness, when the media stream does not take the I frame as the starting point, the user can change the channel to see the black screen for a long time or stop at the static picture of the previous channel, usually, the I frame of the next channel can be received within one to two seconds, and the channel change time is long.
Disclosure of Invention
The invention aims to provide a method for rapidly switching IPTV channels and a set top box, which can reduce the switching time delay of IPTV multicast channels and do not need to be upgraded.
The method for quickly switching the channels comprises the following steps:
acquiring a live broadcast list of an IPTV live broadcast channel, and generating server information corresponding to the live broadcast list;
the server sends the cached media stream content of the corresponding live channel to the set-top box in a unicast media stream mode;
and after receiving the unicast media stream content, the set top box starts decoding and quickly switches to the corresponding watching channel in the live list.
Preferably, the key field identifier in the live broadcast list information is extracted, the server channel information corresponding to the key field identifier is acquired, and a unicast media stream is requested to the server corresponding to the acquired channel information.
Preferably, after receiving the unicast media stream, the set top box analyzes the characteristic of the unicast media stream issued by the server corresponding to the channel information, and the server determines the time for issuing the unicast media stream command to the set top box according to the state of the cache server of the server.
Before the STB fast switch live channel, still include:
and when the set-top box receives the channel switching request, sending Internet group management protocol switching information to the server.
Preferably, the server processes the received internet group management protocol switching information to separate from the original channel to realize fast switching.
Preferably, the fast channel switching server processes the internet group management protocol, and the specific operation of implementing fast channel switching is as follows:
and the fast channel switching server selects the cached new channel video information according to the Internet group management protocol switching message.
Preferably, the fast channel switching server pushes the new channel program stream starting from the I frame in the video information of the cached new channel to the set top box in a unicast manner at a double speed.
Preferably, the specific operation of the fast channel switching server pushing the new channel program stream starting from the I frame in the cached new channel video information to the set top box in a unicast manner at a double speed is as follows:
and the fast channel switching server pushes the program stream of the new channel with the latest I frame in the cached video information of the new channel as the start to the set top box in a unicast mode at the speed of 1.N times.
Preferably, after receiving the unicast media stream content, the set top box starts decoding and quickly switches to the corresponding viewing channel in the live broadcast list.
The invention relates to a method for quickly switching channels based on an IPTV platform. And after receiving the channel switching information of the user, the set top box requests a unicast media stream to a server corresponding to the channel information, and successfully establishes communication between the set top box and the server. And the server continuously sends the unicast media stream to the set-top box, and the set-top box decodes and quickly switches to the corresponding watching channel in the live broadcast list after receiving the unicast media stream.
Drawings
Fig. 1 is a schematic flow chart of a channel switching method of an IPTV platform according to the present invention.
Detailed Description
The present invention will now be described in more detail, wherein preferred embodiments of the invention are shown, it being understood that one skilled in the art may modify the invention herein described while still achieving the advantageous results of the invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.
In the interest of clarity, not all features of an actual implementation are described. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. It will of course be appreciated that in the development of any such actual embodiment, numerous implementation-specific details must be set forth in order to achieve the developer's specific goals, such as compliance with system-related and business-related constraints, which will vary from one implementation to another. Moreover, it will be appreciated that such a development effort might be complex and time-consuming, but would nevertheless be a routine undertaking for those of ordinary skill in the art.
The following description is provided to further illustrate the embodiments of the present invention, so that the objects and features of the present invention will be more clearly understood.
As shown in fig. 1:
the method for quickly switching the channels comprises the following steps:
step S001: acquiring a live broadcast list of an IPTV live broadcast channel, and generating server information corresponding to the live broadcast list;
step S002: the server sends the cached media stream content of the corresponding live channel to the set-top box in a unicast media stream mode;
step S003: and after receiving the unicast media stream content, the set top box starts decoding and quickly switches to the corresponding watching channel in the live list.
Specifically, a key field identifier in the live broadcast list information is extracted, server channel information corresponding to the key field identifier is acquired, and a unicast media stream is requested from a server corresponding to the acquired channel information.
After receiving the unicast media stream, the set top box analyzes the characteristic of the unicast media stream issued by the server corresponding to the channel information, and the server determines the time for issuing the unicast media stream command to the set top box according to the state of the cache server of the server.
Specifically, if the server continuously and rapidly issues the unicast media stream to the set top box, and the set top box receives the first RTP serial number N of the unicast media stream, the server automatically finishes sending the unicast media stream after issuing the unicast media stream with the RTP serial number N-1 to the set top box, and the set top box switches from the unicast media stream with the RTP serial number N-1 to the unicast media stream with the RTP serial number N;
if the server rapidly issues the unicast media stream to the set-top box and the server reduces the issuing rate of the unicast media stream after issuing the command of adding the unicast media stream to the set-top box, the set-top box simultaneously analyzes the RTP serial numbers of the two paths of media streams, when the RTP serial numbers of the two paths of media streams are consistent, the set-top box switches from decoding the unicast media stream to decoding the multicast stream, and simultaneously sends an end message to inform the server of ending the service.
On the basis of the technical scheme, the server determines the time for issuing the unicast media stream command to the set top box according to the state of the cache server of the server.
Before the STB fast switch live channel, still include:
and when the set-top box receives the channel switching request, sending Internet group management protocol switching information to the server. The server processes the received Internet group management protocol switching information to separate from the original channel to realize quick switching.
Specifically, the fast channel switching server processes the internet group management protocol, and the specific operation of implementing fast channel switching is as follows:
and the fast channel switching server selects the cached new channel video information according to the Internet group management protocol switching message.
And the quick channel switching server pushes the program stream of the new channel with the frame I in the video information of the cached new channel as the start to the set top box in a unicast mode at a double speed.
Specifically, the specific operation of the fast channel switching server pushing the new channel program stream starting from the I frame in the cached new channel video information to the set top box in a unicast manner at a double speed is as follows:
and the fast channel switching server pushes the program stream of the new channel with the latest I frame in the cached video information of the new channel as the start to the set top box in a unicast mode at the speed of 1.N times.
And after receiving the unicast media stream content, the set top box starts decoding and quickly switches to the corresponding watching channel in the live list.
The invention relates to a method for quickly switching channels based on an IPTV platform. And after receiving the channel switching information of the user, the set top box requests a unicast media stream to a server corresponding to the channel information, and successfully establishes communication between the set top box and the server. And the server continuously sends the unicast media stream to the set-top box, and the set-top box decodes and quickly switches to the corresponding watching channel in the live broadcast list after receiving the unicast media stream.
Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the embodiments. Thus, the present embodiments are not intended to be limited to the embodiments shown herein but are to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention shall be included in the scope of the present invention.

Claims (9)

1. A method for rapidly switching channels based on an IPTV platform comprises the following steps:
acquiring a live broadcast list of an IPTV live broadcast channel, and generating server information corresponding to the live broadcast list;
the server sends the cached media stream content of the corresponding live channel to the set-top box in a unicast media stream mode;
and after receiving the unicast media stream content, the set top box starts decoding and quickly switches to the corresponding watching channel in the live list.
2. The method according to claim 1, wherein key field identifiers in live broadcast list information are extracted, server channel information corresponding to the key field identifiers is obtained, and a unicast media stream is requested from a server corresponding to the obtained channel information.
3. The IPTV platform channel fast switching method as claimed in claim 2, wherein the set-top box analyzes the characteristic of the unicast media stream issued by the server corresponding to the channel information after receiving the unicast media stream, and the server determines the time for issuing the unicast media stream command to the set-top box according to the state of the cache server.
4. The method as claimed in claim 1, wherein before the set-top box rapidly switches the live channel, the method further comprises:
and when the set-top box receives the channel switching request, sending Internet group management protocol switching information to the server.
5. The method as claimed in claim 4, wherein the server processes the received Internet group management protocol switching information to implement fast switching without an original channel.
6. The method as claimed in claim 5, wherein the fast channel switching server processes the internet group management protocol, and the specific operation for implementing fast channel switching is:
and the fast channel switching server selects the cached new channel video information according to the Internet group management protocol switching message.
7. The IPTV platform channel fast switching method as claimed in claim 6,
and the quick channel switching server pushes the program stream of the new channel with the frame I in the video information of the cached new channel as the start to the set top box in a unicast mode at a double speed.
8. The method as claimed in claim 7, wherein the specific operation of the fast channel switching server to push the new channel program stream starting from the I frame in the cached new channel video information to the set top box in unicast manner at double speed is:
and the fast channel switching server pushes the program stream of the new channel with the latest I frame in the cached video information of the new channel as the start to the set top box in a unicast mode at the speed of 1.N times.
9. The IPTV platform channel fast switching method as claimed in claim 8,
and after receiving the unicast media stream content, the set top box starts decoding and quickly switches to the corresponding watching channel in the live list.
CN201811136199.5A 2018-09-28 2018-09-28 IPTV platform based channel fast switching method Withdrawn CN110971966A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811136199.5A CN110971966A (en) 2018-09-28 2018-09-28 IPTV platform based channel fast switching method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811136199.5A CN110971966A (en) 2018-09-28 2018-09-28 IPTV platform based channel fast switching method

Publications (1)

Publication Number Publication Date
CN110971966A true CN110971966A (en) 2020-04-07

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Application Number Title Priority Date Filing Date
CN201811136199.5A Withdrawn CN110971966A (en) 2018-09-28 2018-09-28 IPTV platform based channel fast switching method

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Application publication date: 20200407