CN112202915B - Video and audio playing system based on internet of things cloud platform - Google Patents
Video and audio playing system based on internet of things cloud platform Download PDFInfo
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- CN112202915B CN112202915B CN202011091985.5A CN202011091985A CN112202915B CN 112202915 B CN112202915 B CN 112202915B CN 202011091985 A CN202011091985 A CN 202011091985A CN 112202915 B CN112202915 B CN 112202915B
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- 230000006855 networking Effects 0.000 claims 2
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- GJWAPAVRQYYSTK-UHFFFAOYSA-N [(dimethyl-$l^{3}-silanyl)amino]-dimethylsilicon Chemical compound C[Si](C)N[Si](C)C GJWAPAVRQYYSTK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000011664 signaling Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/084—Configuration by using pre-existing information, e.g. using templates or copying from other elements
- H04L41/0846—Configuration by using pre-existing information, e.g. using templates or copying from other elements based on copy from other elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
- H04L9/0643—Hash functions, e.g. MD5, SHA, HMAC or f9 MAC
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
- H04N7/0125—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level one of the standards being a high definition standard
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Computer Security & Cryptography (AREA)
- Multimedia (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The application provides a video playing system based on an Internet of things cloud platform. The video and audio playing system based on the cloud platform of the Internet of things comprises: the cloud platform of the Internet of things and the broadcast control terminal; the cloud platform of the Internet of things comprises an abstract model module and a control module, wherein the abstract model module is used for generating abstract models of a plurality of broadcast control terminals, and each abstract model corresponds to a broadcast control terminal connected with the cloud platform of the Internet of things; the control module is used for respectively sending control information of the playing terminal to each playing control terminal; each broadcasting control terminal which acquires the control information of the broadcasting terminal works according to the control information of the broadcasting terminal and sends the parameter configuration change information of the broadcasting control terminal to the cloud platform of the Internet of things; the abstract model module is further used for changing the abstract model of the corresponding broadcast control terminal according to the parameter configuration change information so that the abstract model has the same state with the corresponding broadcast control terminal. The application enables the client to clearly know the situation of the broadcast control terminal and control the broadcast control terminal.
Description
Technical Field
The application belongs to the technical field of video playing, and particularly relates to an audio-video playing system based on an Internet of things cloud platform.
Background
In the prior art, a user cannot control or observe the state of the broadcast control terminal through a remote control.
It is therefore desirable to have a solution that overcomes or at least alleviates at least one of the above-mentioned drawbacks of the prior art.
Disclosure of Invention
The application aims to provide a video playing system based on an Internet of things cloud platform, so as to solve the problems in at least one aspect.
In a first aspect of the present application, an audio-visual playing system based on an internet of things cloud platform, the audio-visual playing system based on the internet of things cloud platform includes:
the cloud platform of the Internet of things;
each broadcasting control terminal is connected with the Internet of things cloud platform respectively, and each broadcasting control terminal is connected with a server;
The cloud platform of the Internet of things comprises an abstract model module and a control module, wherein,
The abstract model module is used for generating abstract models of a plurality of broadcast control terminals, and each abstract model corresponds to a broadcast control terminal connected with the Internet of things cloud platform;
the control module is used for respectively sending control information of the playing terminal to each playing control terminal;
each broadcasting control terminal which acquires the control information of the broadcasting terminal works according to the control information of the broadcasting terminal and sends the parameter configuration change information of the broadcasting control terminal to the cloud platform of the Internet of things;
The abstract model module is further used for changing the abstract model of the corresponding broadcast control terminal according to the parameter configuration change information so that the abstract model has the same state with the corresponding broadcast control terminal.
Optionally, the video playing system based on the internet of things cloud platform further includes:
the system comprises local area network clients, wherein the number of the local area network clients is multiple, and one local area network client is connected with one or more broadcast control terminals and used for sending control instructions to the broadcast control terminals;
The broadcast control terminal is used for working according to the control instruction.
Optionally, the broadcast control terminal is configured to send parameter configuration change information of itself to the internet of things cloud platform after working according to the control instruction.
Optionally, the playing terminal control information includes url address information of the network stream to be played.
Optionally, after the broadcast control terminal obtains url address information of the network stream to be played, a connection request is sent to the server to request for connection of a specified url corresponding to the url address information;
The server side sends encryption address information to the broadcast control terminal after receiving the connection request, wherein the encryption address information comprises code stream name information, starting time, ending time and a device unique key;
And after receiving the encrypted address information, the broadcast control terminal acquires the broadcast data from the server according to the encrypted address information in the starting time and the ending time.
Optionally, after receiving the encrypted address information, the broadcast control terminal further includes, before acquiring data from the server according to the encrypted address information in the start time and the end time:
And acquiring the starting time from the encrypted address information, comparing the starting time with the system time of the server, and acquiring the playing data from the server according to the encrypted address information in the starting time and the ending time if the starting time and the system time are the same.
Optionally, the starting time is obtained from the encrypted address information, and compared with the own system time, if the starting time is different from the own system time, the broadcast control terminal sends the own system time to the server and stops in the starting time and the ending time, and the broadcast data is obtained from the server according to the encrypted address information.
Optionally, the server acquires the system time of the broadcast control terminal sent by the broadcast control terminal, and changes the system time according to the system time of the broadcast control terminal, so that after the system time of the server is consistent with the system time of the broadcast control terminal, new encryption address information is generated and sent to the broadcast control terminal, and the broadcast control terminal acquires the play data from the server according to the new encryption address information.
Optionally, the video playing system based on the internet of things cloud platform further includes a plurality of projectors, one playing control terminal is connected with the plurality of projectors, and each playing control terminal is used for transmitting the playing data obtained from the server to the projectors after changing the resolution so as to enable the projectors to play.
Optionally, the playing control terminal is configured to change the resolution of the playing data acquired from the server, and then transmit the playing data to the projector, so that the projector plays the playing data, and the playing control terminal includes:
acquiring a preset resolution required by a projector;
Acquiring a playing video;
and sending the playing video to a projector at the preset resolution.
The application has at least the following beneficial technical effects:
According to the video and audio playing system based on the Internet of things cloud platform, the abstract model is generated on the Internet of things cloud platform, the client can transmit the instruction to Yun Pingtai on one hand, the cloud platform transmits the instruction to the playing control terminal to control the playing control terminal, on the other hand, the playing control terminal transmits parameter configuration change information to Yun Pingtai according to the change of the client, and the cloud platform changes the abstract model according to the parameter configuration change information, so that the client can clearly know the condition of the playing control terminal and control the playing control terminal.
Drawings
Fig. 1 is a schematic structural diagram of an audio-visual playing system based on an internet of things cloud platform according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application become more apparent, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the application. The embodiments described below by referring to the drawings are illustrative and intended to explain the present application and should not be construed as limiting the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
It should be noted that in the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Fig. 1 is a schematic structural diagram of an audio-visual playing system based on an internet of things cloud platform according to an embodiment of the present application.
The video playing system based on the internet of things cloud platform shown in fig. 1 comprises an internet of things cloud platform 1 and a plurality of broadcast control terminals 2, wherein each broadcast control terminal 2 is connected with the internet of things cloud platform respectively, and each broadcast control terminal 2 is connected with a server 3; the cloud platform 1 of the Internet of things comprises an abstract model module and a control module, wherein the abstract model module is used for generating abstract models of a plurality of broadcast control terminals, and each abstract model corresponds to a broadcast control terminal connected with the cloud platform of the Internet of things; the control module is used for respectively sending control information of the playing terminal to each playing control terminal; each broadcasting control terminal which acquires the control information of the broadcasting terminal works according to the control information of the broadcasting terminal and sends the parameter configuration change information of the broadcasting control terminal to the cloud platform of the Internet of things; the abstract model module is further used for changing the abstract model of the corresponding broadcast control terminal according to the parameter configuration change information so that the abstract model has the same state with the corresponding broadcast control terminal.
According to the video and audio playing system based on the Internet of things cloud platform, the abstract model is generated on the Internet of things cloud platform, the client can transmit the instruction to Yun Pingtai on one hand, the cloud platform transmits the instruction to the playing control terminal to control the playing control terminal, on the other hand, the playing control terminal transmits parameter configuration change information to Yun Pingtai according to the change of the client, and the cloud platform changes the abstract model according to the parameter configuration change information, so that the client can clearly know the condition of the playing control terminal and control the playing control terminal.
In this implementation, the video playing system based on the internet of things cloud platform further includes a plurality of lan clients 4, where one lan client is connected to one or more broadcast control terminals and is configured to send a control instruction to the broadcast control terminal; the broadcast control terminal is used for working according to the control instruction.
In this embodiment, the broadcast control terminal is configured to send the parameter configuration change information of itself to the internet of things cloud platform after working according to the control instruction.
In this embodiment, the play terminal control information includes url address information of a network stream to be played.
In this embodiment, the broadcast control terminal and the internet of things cloud platform keep heartbeat and signaling interaction through the MQTT. And establishing an abstract model which is the same as the broadcast control terminal on the Internet of things cloud platform, wherein the state of the abstract model is completely consistent with the broadcast control terminal. The broadcast control terminal is online and offline, and state changes are synchronized to the cloud platform through Mqtt protocols.
When in actual use, a client sends parameters to the internet of things cloud platform through a remote PC browser in an API calling mode, and the parameters are forwarded through the internet of things cloud platform and then sent to the broadcast control terminal. For example, the url address of the network stream to be played is sent to the playing control terminal, and the playing control terminal obtains data from the designated url of the internet, decodes and displays the data after receiving the information.
In this embodiment, after acquiring url address information of a network stream to be played, a playing control terminal sends a connection request to a server to request to connect specified urls corresponding to the url address information;
the server side sends encryption address information to the broadcast control terminal after receiving the connection request, wherein the encryption address information comprises code stream name information, starting time, ending time and a device unique key;
And after receiving the encrypted address information, the broadcast control terminal acquires broadcast data from the server according to the encrypted address information in the starting time and the ending time.
In this embodiment, the server generates the encrypted address information by the MD5 code.
In this way, hotlinking due to URL leakage can be prevented because the URL is known to someone at a time other than the termination time, and it is impossible to connect to the server to acquire the play data.
In this embodiment, after receiving the encrypted address information, the broadcast control terminal further includes, before acquiring data from the server according to the encrypted address information in the start time and the end time:
And acquiring the starting time from the encrypted address information, comparing the starting time with the system time of the server, and acquiring the playing data from the server according to the encrypted address information in the starting time and the ending time if the starting time and the system time are the same.
In this embodiment, the start time is obtained from the encrypted address information, and compared with the own system time, if different, the broadcast control terminal sends the own system time to the server and stops in the start time and the end time, and the broadcast data is obtained from the server according to the encrypted address information.
In this embodiment, the server acquires the system time of the broadcast control terminal sent by the broadcast control terminal 2, and changes the system time thereof according to the system time of the broadcast control terminal, so that after the system time thereof is consistent with the system time of the broadcast control terminal, new encrypted address information is generated and sent to the broadcast control terminal, so that the broadcast control terminal acquires the play data from the server according to the new encrypted address information.
In this way, the same time can be ensured without system confusion.
In this embodiment, the video playing system based on the internet of things cloud platform further includes a plurality of projectors 5, one playing control terminal is connected with the plurality of projectors, and each playing control terminal is used for transmitting the playing data obtained from the server to the projectors after changing the resolution so as to enable the projectors to play.
In this embodiment, the playing control terminal is configured to change the resolution of the playing data obtained from the server, and then transmit the playing data to the projector, so that the projector plays the playing data, including:
acquiring a preset resolution required by a projector;
Acquiring a playing video;
The play video is transmitted to the projector 5 at a preset resolution.
The broadcast control terminal of the application sends the broadcast video to the projector with the preset resolution required by the projector 5, so that the video formed according to the resolution of the projector can be broadcast by the projector, the projection effect is better, and the broadcast picture is more real.
In this embodiment, acquiring the play video includes:
in this embodiment, transmitting the broadcast video to the projector at the preset resolution includes:
When the resolution of the played video is different from the preset resolution, changing the resolution of the played video to the preset resolution, and generating the played video with the preset resolution;
And sending the play video with the preset resolution to a projector.
In this embodiment, transmitting the play video to the projector at the preset resolution further includes: when the resolution of the played video is the same as the preset resolution, the played video is transmitted to a projector for playing.
By the method, the self-adaptive playing terminal playing method sends the playing video to the projector with the preset resolution required by the projector 5, so that the projector can play the video formed according to the resolution, the playing effect is better, and the played picture is more real.
In this embodiment, the typical preset resolution is 4096×2016;2048 x 1080;1280 x 1024, etc.
In this embodiment, it is assumed that a data source is acquired from the internet, and the resolution of the played video is different from the preset resolution, then the internet source address of the data source is resolved, the streaming media protocol is resolved, and the received data is unpacked into raw data;
And analyzing the address of the Internet source Url in the configuration file stored in the slave device according to the format of Url.
For example, the addresses of RTMP video sources are:
rtmp://pl.shxit.cn/live/CM180521904170009F0197C1。
Such as HLS video source address:
rtmp://pl.shxit.cn/live/CM180521904170009F0197C1.m3u8。
Judging the format of the network stream according to the prefix and the suffix of the Url address, calling a corresponding analysis program to unpack the data stream, and analyzing real video raw data from the packaged network stream.
Raw data is compressed video data, which needs to be decompressed to restore to uncompressed data. The data transmitted over the network must be compressed data because the amount of uncompressed data is very large and cannot be transmitted over the network any more. And analyzing the mark data of the raw data to judge whether the mark data belongs to one of H.264/H.265/MPEG. And then the non-compressed data is sent to a corresponding decoding program for decoding to obtain the non-compressed data.
Outputting the uncompressed video data through HDMI, and outputting the uncompressed audio through audio interface
The uncompressed data is carried to a video processing subsystem of the chip VPSS through DMA inside the chip, noise reduction, sharpening, histogram adjustment and color space conversion are carried out, then the uncompressed data is sent to a VO processing system, the VO calls a hardware data coding module, the original data is formed into BT1120 signals which accord with HDMI output standards, the BT1120 signals are sent to HDMI output PHYs, finally the HDMI PHYs are modulated into TMDS differential signals, and signals which can be transmitted in HDMI cables are formed and sent to a projector for projection.
In the above process, the resolution of the video to be played is changed to the preset resolution.
Finally, it should be pointed out that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting. Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (1)
1. An audio-visual play system based on thing networking cloud platform, its characterized in that, audio-visual play system based on thing networking cloud platform includes:
the cloud platform of the Internet of things;
each broadcasting control terminal is connected with the Internet of things cloud platform respectively, and each broadcasting control terminal is connected with a server;
The cloud platform of the Internet of things comprises an abstract model module and a control module, wherein,
The abstract model module is used for generating abstract models of a plurality of broadcast control terminals, and each abstract model corresponds to a broadcast control terminal connected with the Internet of things cloud platform;
the control module is used for respectively sending control information of the playing terminal to each playing control terminal;
each broadcasting control terminal which acquires the control information of the broadcasting terminal works according to the control information of the broadcasting terminal and sends the parameter configuration change information of the broadcasting control terminal to the cloud platform of the Internet of things;
The abstract model module is further used for changing the abstract model of the corresponding broadcast control terminal according to the parameter configuration change information so that the abstract model has the same state with the corresponding broadcast control terminal;
the video and audio playing system based on the cloud platform of the Internet of things further comprises:
The system comprises a plurality of local area network clients, wherein one local area network client is connected with a plurality of broadcast control terminals and used for sending control instructions to the broadcast control terminals;
the broadcast control terminal is used for working according to the control instruction;
The broadcasting control terminal is used for sending the parameter configuration change information of the broadcasting control terminal to the internet of things cloud platform after working according to the control instruction;
The playing terminal control information comprises url address information of a network stream to be played;
After the broadcasting control terminal acquires url address information of the network stream to be played, a connection request is sent to the server to request to connect specified url corresponding to the url address information;
The server side sends encryption address information to the broadcast control terminal after receiving the connection request, wherein the encryption address information comprises code stream name information, starting time, ending time and a device unique key;
after receiving the encrypted address information, the broadcast control terminal acquires broadcast data from a server according to the encrypted address information in the starting time and the ending time;
After receiving the encrypted address information, the broadcast control terminal further comprises the following steps before acquiring data from the server according to the encrypted address information in the starting time and the ending time:
acquiring the starting time from the encrypted address information, comparing the starting time with the system time of the server, and acquiring playing data from the server according to the encrypted address information in the starting time and the ending time if the starting time is the same as the system time of the server;
Acquiring the starting time from the encrypted address information, comparing the starting time with the own system time, and if the starting time is different from the own system time, sending the own system time to the server by the broadcast control terminal, stopping the broadcast control terminal in the starting time and the ending time, and acquiring broadcast data from the server according to the encrypted address information;
The server acquires the system time of the broadcast control terminal sent by the broadcast control terminal and changes the system time of the server according to the system time of the broadcast control terminal, so that after the system time of the server is consistent with the system time of the broadcast control terminal, new encryption address information is generated and sent to the broadcast control terminal, and the broadcast control terminal acquires play data from the server according to the new encryption address information;
The video and audio playing system based on the Internet of things cloud platform further comprises a plurality of projectors, wherein one playing control terminal is connected with the plurality of projectors, and each playing control terminal is used for transmitting playing data acquired from a server to the projector after changing resolution so as to enable the projector to play;
The broadcasting control terminal is used for transmitting the broadcasting data acquired from the server to the projector after changing the resolution so as to enable the projector to broadcast comprises:
acquiring a preset resolution required by a projector;
Acquiring a playing video;
and sending the playing video to a projector at the preset resolution.
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| CN100490425C (en) * | 2006-07-17 | 2009-05-20 | 杭州华三通信技术有限公司 | Multicast network deploying method and multicast network |
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| CN102594557A (en) * | 2012-01-10 | 2012-07-18 | 深圳市汉普电子技术开发有限公司 | Method and device for encrypting uniform resource locator (URL) and method and device for authenticating URL |
| CN103561040A (en) * | 2013-11-15 | 2014-02-05 | 中国科学院声学研究所 | File downloading method and system |
| CN110049276A (en) * | 2019-05-13 | 2019-07-23 | 广州北辰信息科技有限公司 | A kind of high-definition image transmission system based on intelligent meeting all-in-one machine |
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| CN104883375A (en) * | 2014-02-28 | 2015-09-02 | 上海宇丰电子信息工程有限责任公司 | Digital media information issuing operation management cloud platform system and video playing method thereof |
| CN109857068A (en) * | 2018-12-20 | 2019-06-07 | 上海树根互联技术有限公司 | Intelligence equipment novel maintenance new model cloud service methods of exhibiting, device and server |
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