CN112601033A - Cloud rebroadcasting system and method - Google Patents
Cloud rebroadcasting system and method Download PDFInfo
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- CN112601033A CN112601033A CN202110227530.XA CN202110227530A CN112601033A CN 112601033 A CN112601033 A CN 112601033A CN 202110227530 A CN202110227530 A CN 202110227530A CN 112601033 A CN112601033 A CN 112601033A
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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
- H04N5/28—Mobile studios
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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
- H04N21/21805—Source of audio or video content, e.g. local disk arrays enabling multiple viewpoints, e.g. using a plurality of cameras
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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
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/695—Control of camera direction for changing a field of view, e.g. pan, tilt or based on tracking of objects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/95—Computational photography systems, e.g. light-field imaging systems
- H04N23/951—Computational photography systems, e.g. light-field imaging systems by using two or more images to influence resolution, frame rate or aspect ratio
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
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Abstract
The invention provides a cloud rebroadcasting system and a cloud rebroadcasting method, wherein the cloud rebroadcasting system comprises video signals of scenes shot by a plurality of paths of cameras of a rebroadcasting vehicle; the video signals are recorded, coded and transmitted through the rebroadcast car; and the cloud platform is used for conducting broadcasting manufacture on the received coded signals transmitted by the broadcasting vehicles. The cloud rebroadcasting system and the cloud rebroadcasting method are low in rebroadcasting cost.
Description
Technical Field
The invention relates to the technical field of rebroadcasting, in particular to a cloud rebroadcasting system and a cloud rebroadcasting method.
Background
The conventional rebroadcast car utilizes equipment on the rebroadcast car to perform on-site programming. When the sports event, the concert and other activities are rebroadcast, the traditional rebroadcast vehicle needs to be driven to the site to produce programs, the site staff collects the programs, the program guide and the program production can be completed on the vehicle body, and then the programs are transmitted back to the television station to be broadcast. The traditional rebroadcasting car mainly comprises a car body, a video system, an audio system, a slow motion playback system, a two-way call system, a transmission system and the like. From broadcasting to broadcasting, the cost is high, one 4K ultra-high definition marathon game is rebroadcast, and the actual rebroadcast cost is about 70 ten thousand. A 16 channel 4K conventional rebroadcast car currently sells at a price of about 3 to 5 million. When a rebroadcast vehicle is upgraded, such as from high definition to 4K, or from 4K to 8K, all video equipment and interfaces on the vehicle need to be replaced, in effect, a new vehicle is reassembled.
The traditional rebroadcasting vehicle equipment has limited computing capability and storage capability, adopts the traditional baseband equipment and is difficult to combine with new technologies such as AI, big data, 5G and the like.
In order to produce a broadcast signal, a broadcast signal production team must go to a program shooting site to produce the broadcast signal, and a sufficient space is required in the broadcast vehicle for at least 5 workers to use, so that a vehicle body of the conventional broadcast vehicle must be large enough. In addition, the labor cost and the traffic cost of the manufacturer to the shooting site are high.
In summary, the conventional relay truck is expensive, the depreciation cost of upgrading and updating is very high, and the technology upgrading speed is slow. The labor cost of program production is high, and the program production is not easy to combine with a new technology.
Disclosure of Invention
In view of the above problems, the present invention provides a low-cost and small-volume cloud broadcasting system and method.
According to one aspect of the invention, a cloud relay system is provided, which comprises a relay vehicle and a cloud platform, wherein the relay vehicle comprises a plurality of cameras, a radio cassette recorder, a coding module, a synchronization module and a first signal transceiver module, the cloud platform comprises a second signal transceiver module, a preview module, a scheduling module, a first production module, a second production module and a distribution module, and the plurality of cameras shoot scenes from different angles or distances; the radio recorder is used for receiving and storing the video signals of the multiple paths of cameras; the coding module respectively codes the video signals of each camera into a plurality of paths of coding signals with different time delay and resolution; the synchronization module carries out clock time service on the multi-path coding signals; the first signal transceiving module screens out one or more paths of coded signals with the time delay smaller than a time delay threshold value as first-class coded signals; the first signal transceiving module screens out one or more paths of coding signals with the resolution ratio higher than a resolution ratio threshold value as second-class coding signals; the first signal transceiver module sends the first type of coded signals and the second type of coded signals to the second signal transceiver module; the preview module previews the first type of coded signals; the scheduling module sends a scheduling instruction through the first type of coded signals previewed by the previewing module, wherein the scheduling instruction comprises video signals of the camera in the first type of coded signals corresponding to each frame of image; the first making module is used for carrying out guide making on video signals in the first type of coded signals called by the scheduling instruction according to frames to generate making information; the second production module carries out broadcast guide production on the second type of coded signals according to the production information of the first production module to form video streams; and the distribution module distributes the video stream to the studio and the video playing terminal.
Optionally, the scheduling instruction of the scheduling module further includes distance adjustment or/and angle adjustment of the camera, and the camera is adjusted according to the scheduling instruction through the second signal transceiver module and the first signal transceiver module.
Optionally, the multiple cameras include a fixed-position camera and a mobile-position camera, the fixed-position camera is a camera with a fixed shooting angle relative to the scene, and the mobile-position camera is a camera with a non-fixed shooting angle relative to the scene.
Optionally, the backpack system further comprises a backpack system, wherein the backpack system comprises a mobile encoding module and a network transmission module, the mobile encoding module encodes a video signal of a camera of the mobile station, and transmits the encoded signal to the cloud platform or the relay car through a network.
Optionally, the cloud platform further includes an upgrade module, and the upgrade module is configured to determine whether a video stream manufactured by the second manufacturing module meets a resolution requirement of the video, and send an upgrade instruction to the first signal transceiver module if the video stream manufactured by the second manufacturing module does not meet the resolution requirement, where the upgrade instruction includes a coding module to be replaced, a radio cassette recorder, a first interface between the camera and the radio cassette recorder, and a second interface between the camera and the coding module.
Optionally, the encoding module includes a plurality of encoders, each encoder outputs an encoded signal with a set delay and resolution, and the delay and resolution of the encoded signals output by different encoders are different.
The invention also provides a method for performing cloud rebroadcasting by using the cloud rebroadcasting system, which comprises the following steps:
video signals of scenes shot by a plurality of paths of cameras of the rebroadcasting vehicle;
the video signals are recorded, coded and transmitted through the rebroadcast car;
the cloud platform is used for conducting broadcasting guide manufacturing on the received coded signals transmitted by the broadcasting van;
the steps of recording, encoding and forwarding the video signal through the relay car comprise:
receiving and storing video signals of a plurality of paths of cameras;
respectively encoding the video signals shot by each camera into a plurality of paths of encoded signals with different time delays and resolutions;
carrying out clock time service on the multi-path coding signals to enable the frames of the multi-path coding signals to be synchronous;
screening out one or more paths of coded signals with the time delay smaller than a time delay threshold value as first-class coded signals;
screening out one or more paths of coding signals with the resolution ratio higher than a resolution ratio threshold value as second-class coding signals;
the step of conducting broadcasting manufacture on the received coded signals forwarded by the broadcasting van through the cloud platform comprises the following steps of:
previewing one or more paths of signals in the first type of coded signals, and sending a scheduling instruction, wherein the scheduling instruction comprises video signals of a camera in the first type of coded signals corresponding to each frame of image;
performing broadcast guide production on video signals in the first type of coded signals called by the scheduling instruction according to frames to obtain production information;
one or more paths of coded signals in the second type of coded signals are subjected to broadcast guiding production according to the production information of the first type of coded signals to form video streams;
and issuing the video stream.
Optionally, the step of encoding the video signal captured by each camera into a plurality of encoded signals with different delays and resolutions respectively comprises:
respectively encoding the video signals shot by each camera into two paths of encoded signals with different time delays and resolutions;
wherein, one path of coding signal with lower time delay is used as a first type of coding signal; and taking one path of coded signals with higher resolution as second-class coded signals.
Optionally, the delay threshold is 200 ms.
Optionally, the method further comprises:
judging whether the video stream meets the video resolution requirement or not;
if the resolution requirement is not met, upgrading the broadcasting vehicle;
the step of upgrading the rebroadcast car comprises the step of replacing the coding module, the radio cassette recorder, a first interface between the camera and the radio cassette recorder and a second interface between the camera and the coding module.
The cloud rebroadcasting system is manufactured by the cloud platform cloud rebroadcasting through the rebroadcasting vehicle for receiving, encoding, receiving and sending the encoded signals, can be manufactured by the radio recorder in an off-line mode, is low in manufacturing cost, and can be used for remotely and simultaneously manufacturing videos of a plurality of shooting scenes by a plurality of people, so that the rebroadcasting cost is reduced. The rebroadcasting vehicle of the cloud rebroadcasting system does not comprise equipment for making video and audio, and is small in size and low in cost.
Drawings
Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 is a schematic diagram of a block diagram of a cloud relay system according to the present invention;
fig. 2 is a schematic flow chart of the cloud relay method according to the present invention.
The same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic diagram of a block diagram of a cloud broadcasting system according to the present invention, and as shown in fig. 1, the cloud broadcasting system includes a broadcasting van 1 and a cloud platform 2, the broadcasting van 1 includes multiple cameras 11, a radio recorder 12, an encoding module 13, a synchronization module 14, and a first signal transceiver module 15, the cloud platform 2 includes a second signal transceiver module 21, a preview module 22, a scheduling module 23, a first production module 24, a second production module 25, and a distribution module 26, and the multiple cameras photograph a scene from different angles or distances; the radio recorder is used for receiving and storing the video signals of the multiple paths of cameras; the coding module respectively codes the video signals of each camera into a plurality of paths of coding signals with different time delay and resolution; the synchronization module carries out clock time service on the multi-path coding signals; the first signal transceiving module screens out one or more paths of coded signals with the time delay smaller than a time delay threshold value as first-class coded signals; the first signal transceiving module screens out one or more paths of coding signals with the resolution ratio higher than a resolution ratio threshold value as second-class coding signals; the first signal transceiver module sends the first type of coded signals and the second type of coded signals to the second signal transceiver module; the preview module previews the first type of coded signals; the scheduling module sends a scheduling instruction through the first type of coded signals previewed by the previewing module, wherein the scheduling instruction comprises video signals of the camera in the first type of coded signals corresponding to each frame of image; the first making module is used for carrying out guide making on video signals in the first type of coded signals called by the scheduling instruction according to frames to generate making information; the second production module carries out broadcast guide production on the second type of coded signals according to the production information of the first production module to form video streams; and the distribution module distributes the video stream to the studio and the video playing terminal.
The cloud rebroadcasting system provided by the invention adopts the rebroadcasting car to shoot a scene, records and encodes the shot video signals, and transmits the video signals to the cloud platform for broadcasting guide production, the rebroadcasting car does not comprise video and audio production equipment, for example, the rebroadcasting car does not comprise video system, audio system, slow motion playback system, two-way call system and other equipment on the traditional rebroadcasting car, the video does not need to be produced on the spot on the rebroadcasting car, the personnel cost is reduced, compared with the traditional rebroadcasting car, the car body is reduced to 1/4 of the existing rebroadcasting car, and the video signals can be produced at any place through the cloud platform production. The video signal playing method has the advantages that the video signal playing method meets different requirements for video signals by encoding the encoded signals with different resolutions and time delays, can switch lenses by low-time-delay encoded signals, ensures the continuity of the lenses, synchronizes the manufacturing information of the low-time-delay encoded signals to the encoded signals with high resolutions, and can meet the playing requirements of different resolutions such as high definition, 4k and 8 k.
In one embodiment, the scheduling instruction of the scheduling module further includes distance adjustment or/and angle adjustment of the camera, and the camera is adjusted according to the scheduling instruction through the second signal transceiver module and the first signal transceiver module.
In one embodiment, synchronization module 14 includes one or more of a GPS, 5G, and NTP server.
In one embodiment, the multiple cameras include a fixed-position camera, which is a camera with a fixed shooting angle relative to the scene, and a mobile-position camera, which is a camera with a non-fixed shooting angle relative to the scene.
In one embodiment, the cloud relay system further includes a backpack system 3, which includes a mobile encoding module 31 and a network transmission module 32, where the mobile encoding module encodes a video signal of a camera of the mobile station, and transmits the encoded signal to the cloud platform or the relay cart through a network, for example, transmits the encoded signal to the relay cart or the cloud platform through 5G/4G/Wifi, and specifically, the mobile encoder and the 5G/4G transmission module (network transmission module) form a 5G/4G backpack (e.g., 5G-4K backpack, backpack system), and transmits the encoded signal to the cloud platform or the relay cart through a 5G base station, or transmits the encoded signal to the relay cart through Wifi.
In one embodiment, the cloud platform further includes an upgrading module, the video stream manufactured by the second manufacturing module is used for judging whether the resolution requirement of the video is met, if the resolution requirement is not met, an upgrading instruction is sent to the first signal transceiver module, and the upgrading instruction includes a coding module to be replaced, a radio cassette recorder, a first interface between the camera and the radio cassette recorder, and a second interface between the camera and the coding module.
In one embodiment, the encoding module includes a plurality of encoders, each encoder outputting an encoded signal with a set delay and resolution, and the delay and resolution of the encoded signals output by different encoders being different. The rebroadcasting car is provided with a first interface for connecting the camera and the radio cassette recorder, a second interface for connecting the camera and the encoder and a third interface for connecting the encoder and the signal transceiver. The cloud relay broadcasting system can conduct production of high-definition video, 4k video or 8k video by replacing the recorder and the encoder, for example, the relay broadcasting vehicle can conduct production of high-definition video, 4k video or 8k video by replacing the first interface, the recorder, the second interface and the encoder in combination with the cloud platform.
In one embodiment, the baseband transmission or/and IP transmission is performed between the camera and the radio cassette recorder, between the camera and the encoder, and between the encoder and the signal transceiver.
In one embodiment, the first interface and the second interface are 3G-SDI baseband transmission interfaces, and the cloud relay system relays high-definition videos.
In one embodiment, the first interface and the second interface are 12G-SDI baseband transmission interfaces, and the cloud relay system relays 4K video.
In one embodiment, the first interface and the second interface are 4 × 12G-SDI baseband transmission interfaces, that is, because the encoder and other devices cannot transmit through 1 interface support 48G, the first interface and the second interface each include four parallel 12G-SDI baseband transmission interfaces, and the cloud relay system relays 8K video.
In one embodiment, the first interface and the second interface are optical network ports, the optical network ports are 25G, 50G or 100G optical network ports, and the cloud relay system relays video through IP transmission.
At present, a rebroadcasting vehicle can only buy a new vehicle after being upgraded from a high definition to 4K, and because the broadcasting equipment (a control console, a monitor and the like) of the existing rebroadcasting vehicle can not reach the 4K standard and the number of equipment to be replaced is very large, the broadcasting equipment is usually updated and needs to be replaced by all equipment.
The cloud relay broadcasting system mainly comprises two parts, one part is a cloud platform and is used for video guide or live broadcasting, the cloud platform mainly completes program production functions of guide, scheduling, caption, packaging, slow action and the like, and finally produced signals are transmitted back to a studio or a master controller of a television station/media fusion center for further processing. Or the signals are distributed to users to be directly watched, one is an on-vehicle system, namely a rebroadcasting vehicle, the two parts are matched with each other to work, the video signal rebroadcasting function is completed, the existing traditional rebroadcasting vehicle mode is completely replaced, new functions such as interaction, AI, 5G and the like can be added, and the effects of replacement and upgrading are achieved. Hardware upgrading is carried out through the radio recorder and the coding module of the rebroadcasting car, software upgrading is carried out through the cloud platform, upgrading is convenient, and cost is low.
In one embodiment, a video signal shot by a camera in the cloud broadcasting system is taken by an encoder, an NTP server or 5G time service is taken as frame synchronization information, a time code is added in a frame or a TS stream, and the frame or the TS stream is encoded by an AVS3, an AVS2, an av265, a 264 and the like and then uploaded to a broadcasting/live broadcasting system on a cloud platform. The video signal of the camera of the mobile station is encoded by a mobile encoder, an NTP server or 5G time service is taken as frame synchronization information, a time code is added in a frame or a TS stream, and the frame or the TS stream is uploaded to a broadcast/live broadcast system on a cloud platform after being encoded by AVS3, AVS2, 265, 264 and the like or uploaded to the broadcast/live broadcast system on the cloud platform through a broadcast vehicle. The director team does not need to arrive at the scene, and the signal production is carried out remotely through the director/live broadcast system on the cloud platform. The signals recorded by the recorder can also be uploaded to a cloud platform for remote production and use, such as collection, film cutting and the like.
The present invention further provides a method for performing cloud rebroadcasting by the cloud rebroadcasting system in each of the above embodiments, as shown in fig. 2, including:
step S1, video signals of the scene shot by the multi-path cameras of the relay truck;
step S2, recording, coding and transmitting the video signal through the rebroadcast car;
and step S3, the received coded signals forwarded by the relay truck are subjected to the manufacture of the relay through the cloud platform.
In one embodiment, step S2 includes:
receiving and storing video signals of a plurality of paths of cameras;
respectively encoding the video signals shot by each camera into a plurality of paths of encoded signals with different time delays and resolutions;
carrying out clock time service on the multi-path coding signals to enable the frames of the multi-path coding signals to be synchronous;
screening out one or more paths of coded signals with the time delay smaller than a time delay threshold value as first-class coded signals;
and screening out one or more paths of coded signals with the resolution higher than a resolution threshold value as second-class coded signals.
Optionally, the step of encoding the video signal captured by each camera into a plurality of encoded signals with different delays and resolutions respectively comprises:
respectively encoding the video signals shot by each camera into two paths of encoded signals with different time delays and resolutions;
wherein, one path of coding signal with lower time delay is used as a first type of coding signal; and taking one path of coded signals with higher resolution as second-class coded signals.
In one embodiment, step S3 includes:
previewing one or more paths of signals in the first type of coded signals, and sending a scheduling instruction, wherein the scheduling instruction comprises video signals of a camera in the first type of coded signals corresponding to each frame of image;
performing broadcast guide production on video signals in the first type of coded signals called by the scheduling instruction according to frames to obtain production information;
one or more paths of coded signals in the second type of coded signals are subjected to broadcast guiding production according to the production information of the first type of coded signals to form video streams;
and issuing the video stream.
In an embodiment, the cloud relaying method further includes:
judging whether the video stream meets the video resolution requirement or not;
if the resolution requirement is not met, upgrading the broadcasting vehicle;
the step of upgrading the rebroadcast car comprises the step of replacing the coding module, the radio cassette recorder, a first interface between the camera and the radio cassette recorder and a second interface between the camera and the coding module.
In the foregoing embodiments, optionally, the delay threshold is 200 ms.
According to the cloud relay system and the cloud relay method, the prior huge directing platform, monitor, caption machine and other equipment on the relay vehicle are removed, all operations are placed in the cloud, a manufacturer does not need to be in the relay vehicle, the vehicle body can be reduced to 1/4, the cost of the whole vehicle is low, and the cost performance is extremely high; because the personnel can not arrive at the site, the site manufacturing cost of travelling and the like is saved, the cost is low, the remote manufacturing can be realized, and a plurality of people can simultaneously manufacture. Taking the example of rebroadcasting a 4K ultra-high-definition marathon game, the actual rebroadcasting cost is about 70 thousands of RMB from rebroadcasting to broadcasting by using a traditional rebroadcasting vehicle; by using the cloud relaying mode of the cloud relaying system, the actual relaying cost is about 35 ten thousand RMB, and half of the actual relaying cost is saved. The use cost is low, field manufacturing personnel can be reduced, the regeneration can be realized, the old can be used, only relevant equipment is updated, and parts such as a vehicle body, a transmitting and receiving system and the like do not need to be updated; the service modes are various, the butt joint of new technologies such as 5G, big data, AI, interaction and the like is easy, and new media applications such as multi-view angles and the like can be manufactured.
While the foregoing disclosure shows illustrative embodiments of the invention, it should be noted that various changes and modifications could be made herein without departing from the scope of the invention as defined by the appended claims. Furthermore, although elements of the invention may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
Claims (10)
1. A cloud rebroadcasting system is characterized by comprising a rebroadcasting vehicle and a cloud platform, wherein the rebroadcasting vehicle comprises a plurality of cameras, a radio cassette recorder, a coding module, a synchronization module and a first signal transceiver module, the cloud platform comprises a second signal transceiver module, a preview module, a scheduling module, a first manufacturing module, a second manufacturing module and a distribution module, and the plurality of cameras shoot scenes from different angles or distances; the radio recorder is used for receiving and storing the video signals of the multiple paths of cameras; the coding module respectively codes the video signals of each camera into a plurality of paths of coding signals with different time delay and resolution; the synchronization module carries out clock time service on the multi-path coding signals; the first signal transceiving module screens out one or more paths of coded signals with the time delay smaller than a time delay threshold value as first-class coded signals; the first signal transceiving module screens out one or more paths of coding signals with the resolution ratio higher than a resolution ratio threshold value as second-class coding signals; the first signal transceiver module sends the first type of coded signals and the second type of coded signals to the second signal transceiver module; the preview module previews the first type of coded signals; the scheduling module sends a scheduling instruction through the first type of coded signals previewed by the previewing module, wherein the scheduling instruction comprises video signals of the camera in the first type of coded signals corresponding to each frame of image; the first making module is used for carrying out guide making on video signals in the first type of coded signals called by the scheduling instruction according to frames to generate making information; the second production module carries out broadcast guide production on the second type of coded signals according to the production information of the first production module to form video streams; and the distribution module distributes the video stream to the studio and the video playing terminal.
2. The cloud broadcasting system of claim 1, wherein the scheduling instruction of the scheduling module further includes a distance adjustment or/and an angle adjustment of the camera, and the camera is adjusted according to the scheduling instruction through the second signal transceiver module and the first signal transceiver module.
3. The cloud broadcasting system of claim 1, wherein the plurality of cameras comprise a fixed-position camera and a mobile-position camera, the fixed-position camera is a camera with a fixed shooting angle relative to the scene, and the mobile-position camera is a camera with a non-fixed shooting angle relative to the scene.
4. The cloud relaying system of claim 3, further comprising a backpack system, wherein the backpack system comprises a mobile encoding module and a network transmission module, the mobile encoding module encodes a video signal of the camera of the mobile station and transmits the encoded signal to the cloud platform or the relay truck through a network.
5. The cloud broadcasting system of claim 1, wherein the cloud platform further includes an upgrade module, the video stream produced by the second production module is used to determine whether a resolution requirement of the video is met, and if the resolution requirement is not met, an upgrade instruction is sent to the first signal transceiver module, where the upgrade instruction includes an encoding module to be replaced, a radio cassette recorder, a first interface between the camera and the radio cassette recorder, and a second interface between the camera and the encoding module.
6. The cloud broadcasting system of claim 1, wherein the encoding module comprises a plurality of encoders, each encoder outputting an encoded signal with a set delay and resolution, and the delay and resolution of the encoded signals output by different encoders are different.
7. A method for cloud relaying using the cloud relaying system as recited in any one of claims 1 to 6, comprising:
video signals of scenes shot by a plurality of paths of cameras of the rebroadcasting vehicle;
the video signals are recorded, coded and transmitted through the rebroadcast car;
the cloud platform is used for conducting broadcasting guide manufacturing on the received coded signals transmitted by the broadcasting van;
the steps of recording, encoding and forwarding the video signal through the relay car comprise:
receiving and storing video signals of a plurality of paths of cameras;
respectively encoding the video signals shot by each camera into a plurality of paths of encoded signals with different time delays and resolutions;
carrying out clock time service on the multi-path coding signals to enable the frames of the multi-path coding signals to be synchronous;
screening out one or more paths of coded signals with the time delay smaller than a time delay threshold value as first-class coded signals;
screening out one or more paths of coding signals with the resolution ratio higher than a resolution ratio threshold value as second-class coding signals;
the step of conducting broadcasting manufacture on the received coded signals forwarded by the broadcasting van through the cloud platform comprises the following steps of:
previewing one or more paths of signals in the first type of coded signals, and sending a scheduling instruction, wherein the scheduling instruction comprises video signals of a camera in the first type of coded signals corresponding to each frame of image;
performing broadcast guide production on video signals in the first type of coded signals called by the scheduling instruction according to frames to obtain production information;
one or more paths of coded signals in the second type of coded signals are subjected to broadcast guiding production according to the production information of the first type of coded signals to form video streams;
and issuing the video stream.
8. The method of claim 7, wherein the step of encoding the video signal captured by each camera into a plurality of encoded signals with different delays and resolutions respectively comprises:
respectively encoding the video signals shot by each camera into two paths of encoded signals with different time delays and resolutions;
wherein, one path of coding signal with lower time delay is used as a first type of coding signal; and taking one path of coded signals with higher resolution as second-class coded signals.
9. The method of cloud relaying according to claim 7, wherein said delay threshold is 200 ms.
10. The method of cloud relaying according to claim 7, further comprising:
judging whether the video stream meets the video resolution requirement or not;
if the resolution requirement is not met, upgrading the broadcasting vehicle;
the step of upgrading the rebroadcast car comprises the step of replacing the coding module, the radio cassette recorder, a first interface between the camera and the radio cassette recorder and a second interface between the camera and the coding module.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113271313A (en) * | 2021-04-20 | 2021-08-17 | 北京国际云转播科技有限公司 | Cloud director system, scheduling method, storage medium and multimedia scheduling server |
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