Ultra-high-definition digital performance second scene rebroadcasting method

Abstract

According to the ultrahigh-definition digital performance second field rebroadcasting method provided by the invention, at least one of an 8K ultrahigh-definition camera, a 4K ultrahigh-definition camera and a high-frame-rate camera can be adopted to collect original video signals, the image quality of the original video signals is greatly improved, and signal transmission is carried out through an internet channel, so that the image quality of the original video signals is greatly improved. According to the technical scheme, the encrypted video signal can be efficiently distributed to the first terminal equipment, the delay problem of transmission and distribution is solved, in addition, by encrypting the coded video signal, an effective copyright protection mechanism can be provided, and infringement behaviors such as illegal rebroadcasting can be avoided; according to the mode, the generated on-site activity summary information can be pushed to a plurality of preset terminal devices, so that different watching requirements can be met.

Description

Technical Field

[0001] The present invention relates to the field of video processing technology, and in particular to a second on-site broadcasting method for ultra-high-definition digital performances. Background Art

[0002] With the development of ultra-high-definition video technology, audiences' visual experience requirements for live performances, sports events and other entertainment activities are constantly increasing. Single on-site viewing can no longer meet the needs of the audience, and simultaneous broadcasting in multiple venues through live video or on-demand has become a new development trend. The relevant technology mainly broadcasts videos through TV stations, and mainly transmits signals through satellite channels. Since dedicated receiving equipment is required, the use of satellite channel transmission is relatively expensive; existing technologies can also transmit signals through Internet channels, but there are delays in the transmission and distribution of program signals from the scene to each playback point, and the picture quality has deteriorated. In addition, there is a lack of effective copyright protection mechanisms, which makes it easy for infringements such as illegal broadcasts to occur, and it is difficult to convey live event information to potential terminal devices in a timely and effective manner, thus failing to meet different viewing needs. Summary of the invention

[0003] The purpose of the present invention is to provide an ultra-high-definition digital performance second live broadcasting method to improve the delay and image quality degradation problems in signal transmission and distribution, and provide a copyright protection mechanism to avoid infringements such as illegal broadcasting. At the same time, it can timely and effectively convey live event information to potential terminal devices to meet different viewing needs.

[0004] The present invention provides a method for second-site broadcasting of ultra-high-definition digital performances, the method comprising: for each activity site, collecting the original video signal corresponding to the activity site by a designated camera, encoding the original video signal to obtain an encoded video signal; wherein the designated camera comprises at least one of the following: an 8K ultra-high-definition camera, a 4K ultra-high-definition camera, and a high frame rate camera; transcoding the encoded video signal according to a preset transcoding format to obtain a transcoded video signal; encrypting the transcoded video signal to obtain an encrypted video signal; obtaining metadata information corresponding to the encrypted video signal; obtaining the transmission information corresponding to the first terminal device The encrypted video signal is sent to the first terminal device through the Internet channel according to the transmission parameters, so that the first terminal device decrypts and decodes the encrypted video signal to obtain the original video signal; wherein the first terminal device has the authority to use the original video signal; based on the metadata information corresponding to each activity site, the on-site activity summary information is generated, and the on-site activity summary information is pushed to the preset multiple terminal devices; if a relay request is received from a second terminal device among the multiple terminal devices, a target relay video corresponding to the relay request is obtained, and the target relay video is sent to the second terminal device, so as to relay the target relay video through the second terminal device.

[0005] Furthermore, the method also includes: saving the encrypted video signal and metadata information.

[0006] Furthermore, if a relay request is received from a second terminal device among multiple terminal devices, a target relay video corresponding to the relay request is obtained, and the target relay video is sent to the second terminal device, so as to relay the target relay video through the second terminal device, the steps include: if a relay request is received from a second terminal device among multiple terminal devices through a web page and / or an APP client, the relay request is verified; if the relay request is verified, the target relay video corresponding to the relay request is obtained from the multiple encrypted video signals that are saved, and the target relay video is sent to the second terminal device; the playback permission corresponding to the target relay video is opened to the second terminal device, so that the target relay video is decrypted and decoded through the second terminal device, and the processed target relay video is played.

[0007] Furthermore, the step of obtaining transmission parameters corresponding to the first terminal device and sending the encrypted video signal to the first terminal device according to the transmission parameters through an Internet channel includes: obtaining transmission parameters corresponding to the first terminal device and sending the encrypted video signal to an edge server according to the transmission parameters through an Internet channel, so as to send the encrypted video signal to the first terminal device through the edge server.

[0008] Furthermore, the step of encrypting the transcoded video signal to obtain the encrypted video signal includes: using a digital copyright management standard to encrypt the transcoded video signal to obtain the encrypted video signal.

[0009] Furthermore, each terminal device is a terminal corresponding to a theater screen.

[0010] Furthermore, the maximum frame rate corresponding to the camera is specified to be 120 frames per second.

[0011] The present invention provides an ultra-high-definition digital performance second-site broadcasting and projection device, which includes: a capture module, which is used to capture the original video signal corresponding to each activity site through a designated camera, and encode the original video signal to obtain an encoded video signal; wherein the designated camera includes at least one of the following: an 8K ultra-high-definition camera, a 4K ultra-high-definition camera, and a high frame rate camera; a transcoding processing module, which is used to transcode the encoded video signal according to a preset transcoding format to obtain a transcoded video signal; an encryption processing module, which is used to encrypt the transcoded video signal to obtain an encrypted video signal; an acquisition module, which is used to obtain metadata information corresponding to the encrypted video signal; and a sending module, which is used to Acquire transmission parameters corresponding to the first terminal device, and send the encrypted video signal to the first terminal device through an Internet channel according to the transmission parameters, so that the first terminal device decrypts and decodes the encrypted video signal to obtain the original video signal; wherein the first terminal device has the authority to use the original video signal; a push module is used to generate on-site activity summary information based on metadata information corresponding to each activity site, and push the on-site activity summary information to a plurality of preset terminal devices; a relay module is used to, if a relay request sent by a second terminal device among the plurality of terminal devices is received, obtain a target relay video corresponding to the relay request, and send the target relay video to the second terminal device, so as to relay the target relay video through the second terminal device.

[0012] An electronic device provided by the present invention includes a processor and a memory, wherein the memory stores machine executable instructions that can be executed by the processor, and the processor executes the machine executable instructions to implement any one of the above-mentioned methods for second live broadcast of ultra-high-definition digital performances.

[0013] The present invention provides a machine-readable storage medium, which stores machine-executable instructions. When the machine-executable instructions are called and executed by a processor, the machine-executable instructions prompt the processor to implement any of the above-mentioned methods for second live broadcast of ultra-high-definition digital performances.

[0014] The present invention provides a second-site broadcasting method for ultra-high-definition digital performances. For each activity site, a designated camera is used to collect the original video signal corresponding to the activity site, and the original video signal is encoded to obtain an encoded video signal; wherein the designated camera includes at least one of the following: an 8K ultra-high-definition camera, a 4K ultra-high-definition camera, and a high frame rate camera; the encoded video signal is transcoded according to a preset transcoding format to obtain a transcoded video signal; the transcoded video signal is encrypted to obtain an encrypted video signal; metadata information corresponding to the encrypted video signal is obtained; and transmission parameters corresponding to the first terminal device are obtained. , through an Internet channel, the encrypted video signal is sent to a first terminal device according to the transmission parameters, so that the first terminal device decrypts and decodes the encrypted video signal to obtain an original video signal; wherein the first terminal device has the authority to use the original video signal; based on the metadata information corresponding to each activity site, the on-site activity summary information is generated, and the on-site activity summary information is pushed to a preset plurality of terminal devices; if a relay request is received from a second terminal device among the plurality of terminal devices, a target relay video corresponding to the relay request is obtained, and the target relay video is sent to the second terminal device, so as to relay the target relay video through the second terminal device. This method can use at least one of an 8K ultra-high-definition camera, a 4K ultra-high-definition camera and a high frame rate camera to collect the original video signal, which greatly improves the picture quality of the original video signal. The signal can be transmitted through the Internet channel, and the encrypted video signal can be efficiently distributed to the first terminal device, improving the transmission and distribution delay problem. In addition, by encrypting the encoded video signal, an effective copyright protection mechanism can be provided to avoid infringements such as illegal broadcasting; this method can also push the generated live event summary information to multiple preset terminal devices, thereby meeting different viewing needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A flowchart of a second live broadcasting method of ultra-high-definition digital performances provided by an embodiment of the present invention;

[0017] Figure 2 A flowchart of another method for second live broadcast of ultra-high-definition digital performances provided by an embodiment of the present invention;

[0018] Figure 3 A schematic diagram of the structure of an ultra-high-definition digital performance second-site broadcasting and projection device provided by an embodiment of the present invention;

[0019] Figure 4 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] With the rapid development of video technology, entertainment activities such as live performances and sports events are gradually shifting from a single live viewing mode to a new form that integrates live broadcast and on-demand services. Audiences can choose to watch live performances nearby, or watch them simultaneously in multiple venues in different locations through live video or on-demand. This remote broadcasting mode can not only expand the coverage of the program, but also provide viewers with a more flexible and personalized viewing experience. However, it is not easy to achieve high-quality remote broadcasting services. Existing technical solutions have many limitations, which are mainly reflected in the following aspects:

[0022] 1. The program acquisition and production capabilities are limited and cannot meet the requirements of ultra-high-definition video.

[0023] 2. There are problems such as delay and degradation of image quality in the transmission of program signals from the site to each playback point.

[0024] 3. The lack of an effective copyright protection mechanism makes it easy for infringements such as illegal broadcasting to occur.

[0025] 4. It is unable to flexibly meet the viewing needs of different venues and different audiences, and there is a lack of on-demand services.

[0026] 5. Live event information is difficult to convey to potential broadcasting venues in a timely and effective manner.

[0027] Based on this, an embodiment of the present invention provides a method for second live broadcast of ultra-high-definition digital performances. This technology can be applied to scenarios where video programs need to be broadcast live or relayed.

[0028] To facilitate understanding of this embodiment, firstly, an ultra-high-definition digital performance second live broadcasting method disclosed in an embodiment of the present invention is introduced. Figure 1 As shown, the method comprises the following steps:

[0029] Step S102: for each activity site, collect the original video signal corresponding to the activity site through a designated camera, encode the original video signal, and obtain an encoded video signal; wherein the designated camera includes at least one of the following: an 8K ultra-high-definition camera, a 4K ultra-high-definition camera, and a high frame rate camera;

[0030] The above-mentioned event site may be a performance site, a sports event site, etc.; the above-mentioned 8K ultra-high-definition camera is a recording device that can shoot and record extremely high-definition images; the 8K resolution reaches 7680×4320 pixels, which can provide more delicate and realistic image quality. The above-mentioned 4K ultra-high-definition camera is a network camera that uses a high-resolution image sensor, which can provide extremely clean and delicate image quality, and its resolution reaches 3840×2160 pixels; the above-mentioned high frame rate camera is a special camera that can record images at an extremely high frame rate, usually 1,000 to 10,000 frames per second. This camera can provide clearer and more stable images when shooting fast-moving objects. In actual implementation, when live performances, sports events and other activities take place, one or more of 8K ultra-high-definition cameras, 4K ultra-high-definition cameras and high-frame rate cameras of up to 120 frames per second can be used to capture video of the event site to obtain the original video signal. For the convenience of transmission, the original video signal can be encoded to reduce the size of the original video signal. Specifically, the purpose of compression can be achieved by removing redundant information in the video, such as spatial redundancy, temporal redundancy, etc., to obtain the encoded video signal.

[0031] Step S104, transcoding the encoded video signal according to a preset transcoding format to obtain a transcoded video signal;

[0032] The above transcoding formats can be set according to actual needs. In actual implementation, the encoding format corresponding to the encoded video signal may not be suitable for distribution, on-demand, broadcast, etc. For this reason, the encoded video signal can be converted into a unified format suitable for distribution, on-demand and broadcast, such as 4K / 60pH.265, etc. At the same time, transcoded versions with different bit rates and resolutions can be generated to meet the playback requirements of different terminal devices.

[0033] Step S106, encrypting the transcoded video signal to obtain an encrypted video signal;

[0034] In actual implementation, in order to protect the security and copyright of video content and prevent unauthorized access and copying, encryption technology can be used to encrypt the transcoded video signal to obtain an encrypted video signal. Only the first terminal device with permission can decrypt the encrypted video signal, thereby ensuring the confidentiality and integrity of the video.

[0035] Step S108, obtaining metadata information corresponding to the encrypted video signal;

[0036] The metadata information may include the program name, time information, venue information, participant information, etc. of the program source corresponding to the encrypted video signal. Such metadata information is not only conducive to subsequent program retrieval and management, but also the basis for program forecasting and ordering.

[0037] Step S110, obtaining transmission parameters corresponding to the first terminal device, and sending the encrypted video signal to the first terminal device through an Internet channel according to the transmission parameters, so that the first terminal device decrypts and decodes the encrypted video signal to obtain an original video signal; wherein the first terminal device has the authority to use the original video signal;

[0038] The above-mentioned transmission parameters may include parameters such as bit rate and resolution. In actual implementation, the encrypted video signal can be sent to the first terminal device through the Internet channel by using appropriate transmission parameters such as bit rate and resolution according to the needs of the first terminal device. When the first terminal device has the authority to use the original video signal, the first terminal device can be allowed to decrypt the encrypted video signal to obtain a decrypted video signal, and decode the decrypted video signal. Specifically, the encoded video signal can be restored to the original video signal so that it can be displayed and played through the first terminal device.

[0039] Step S112, generating on-site activity summary information based on metadata information corresponding to each activity site, and pushing the on-site activity summary information to a plurality of preset terminal devices;

[0040] In actual implementation, the live event summary information can be generated based on the metadata information corresponding to each event site, and the live event summary information includes time information, event location, participant information, program list, etc., and is accompanied by preview video and picture resources. The live event summary information can be pushed to multiple potential terminal devices in real time through the Internet channel.

[0041] Step S114: if a relay request sent by a second terminal device among the multiple terminal devices is received, a target relay video corresponding to the relay request is obtained, and the target relay video is sent to the second terminal device so as to relay the target relay video through the second terminal device.

[0042] The second terminal device may be any one or more of a plurality of terminal devices; in actual implementation, the second terminal device may apply for broadcasting of the live event of interest and issue the broadcast request, which usually carries information such as venue information, expected audience size, broadcast requirements, etc. After receiving the broadcast request, the corresponding target broadcast video may be obtained according to the broadcast request and sent to the second terminal device to broadcast the target broadcast video.

[0043] The above-mentioned ultra-high-definition digital performance second-site broadcasting method, for each activity site, collects the original video signal corresponding to the activity site through a designated camera, encodes the original video signal, and obtains an encoded video signal; wherein the designated camera includes at least one of the following: an 8K ultra-high-definition camera, a 4K ultra-high-definition camera, and a high frame rate camera; according to a preset transcoding format, the encoded video signal is transcoded to obtain a transcoded video signal; the transcoded video signal is encrypted to obtain an encrypted video signal; metadata information corresponding to the encrypted video signal is obtained; transmission parameters corresponding to the first terminal device are obtained, and An Internet channel sends the encrypted video signal to a first terminal device according to transmission parameters, so that the first terminal device decrypts and decodes the encrypted video signal to obtain an original video signal; wherein the first terminal device has the authority to use the original video signal; based on metadata information corresponding to each activity site, generates on-site activity summary information, and pushes the on-site activity summary information to a plurality of preset terminal devices; if a relay request is received from a second terminal device among the plurality of terminal devices, obtains a target relay video corresponding to the relay request, and sends the target relay video to the second terminal device, so as to relay the target relay video through the second terminal device. This method can use at least one of an 8K ultra-high-definition camera, a 4K ultra-high-definition camera and a high frame rate camera to collect the original video signal, which greatly improves the picture quality of the original video signal. The signal can be transmitted through the Internet channel, and the encrypted video signal can be efficiently distributed to the first terminal device, improving the transmission and distribution delay problem. In addition, by encrypting the encoded video signal, an effective copyright protection mechanism can be provided to avoid infringements such as illegal broadcasting; this method can also push the generated live event summary information to multiple preset terminal devices, thereby meeting different viewing needs.

[0044] The embodiment of the present invention also provides another method for second live broadcast of ultra-high-definition digital performances, which is implemented on the basis of the method of the above embodiment, such as Figure 2 As shown, the method comprises the following steps:

[0045] Step S202: for each activity site, collect the original video signal corresponding to the activity site by using a designated camera, encode the original video signal, and obtain an encoded video signal; wherein the designated camera includes at least one of the following: an 8K ultra-high-definition camera, a 4K ultra-high-definition camera, and a high frame rate camera;

[0046] The maximum frame rate corresponding to the above-mentioned designated camera is 120 frames per second. In this embodiment, 8K / 4K ultra-high-definition cameras and professional camera equipment with a frame rate of up to 120 frames per second can be used to perform refined video capture of the live scene. At the same time, with the cooperation of professional live switching equipment, the captured video source is switched in real time, special effects synthesis and other live productions are performed to obtain the above-mentioned original video signal.

[0047] Advanced video acquisition and production equipment can ensure that ultra-high-definition video program sources with up to 8K resolution, 60 frames per second or even 120 frames per second are obtained. This ultra-high-definition image quality and high frame rate characteristics can not only achieve a delicate and realistic visual experience, but also better capture the details of fast-moving images, greatly improving the visual presentation quality of live events.

[0048] Step S204, transcoding the encoded video signal according to a preset transcoding format to obtain a transcoded video signal;

[0049] In this embodiment, the encoded video signal produced on site can be uploaded to the program convergence system through the Internet channel. The program convergence system receives the encoded video signals corresponding to each activity site and performs unified processing and management. Specifically, the encoded video signal can first be transcoded according to a preset transcoding format to obtain a transcoded video signal.

[0050] Step S206, using a digital rights management standard to encrypt the transcoded video signal to obtain an encrypted video signal;

[0051] The above-mentioned digital rights management can be referred to as DRM (Digital Rights Management). In this embodiment, in order to protect the copyright of the program, ChinaDRM digital rights management technology can be used to encrypt and protect the transcoded video signal. Only the authorized first terminal device can decrypt and play the relevant program.

[0052] Step S208, obtaining metadata information corresponding to the encrypted video signal;

[0053] Step S210: save the encrypted video signal and metadata information.

[0054] The video signals that have been encoded, transcoded and DRM encrypted, as well as the corresponding metadata information, can be stored on the central server of the program aggregation system for a long time, forming a rich program resource library to provide support for subsequent on-demand and broadcast services.

[0055] Step S212, obtaining transmission parameters corresponding to the first terminal device, and sending the encrypted video signal to the edge server through the Internet channel according to the transmission parameters, so that the encrypted video signal is sent to the first terminal device through the edge server, so that the first terminal device decrypts and decodes the encrypted video signal to obtain the original video signal; wherein the first terminal device has the authority to use the original video signal;

[0056] The edge server is a distributed computing architecture, and its data processing is performed at the edge of the network. It is usually deployed closer to the target terminal device to process data, which can significantly reduce data transmission time, thereby reducing latency. In this embodiment, the above-mentioned encrypted video signal can be received, and according to the needs of the first terminal device, appropriate transmission parameters such as bit rate and resolution are selected for packaging, while supporting both real-time distribution and on-demand modes. The first terminal device can be the terminal corresponding to the theater screen. Each broadcast venue usually needs to be equipped with a special receiving device for receiving the transmitted encrypted video signal. These devices usually include decoders, playback servers, etc., which can decrypt and play the received encrypted video signal.

[0057] In the above distribution solution, the ultra-high-definition program content can be effectively transmitted to various broadcasting venues through the program convergence system, ensuring the quality and stability of the program signal.

[0058] In order to ensure the quality and stability of video signal transmission, CDN (Content Delivery Network) technology can be used to cache encrypted video signals to edge servers across the country or even the world, providing services to terminal devices nearby and improving transmission speed and reliability.

[0059] The program distribution process can be managed and scheduled by a dedicated control system, which can dynamically adjust the distribution strategy according to the type of target terminal equipment, network status, etc., optimize transmission performance, and support functions such as real-time monitoring and fault warning.

[0060] Step S214, generating on-site activity summary information based on the metadata information corresponding to each activity site, and pushing the on-site activity summary information to a plurality of preset terminal devices;

[0061] Each of the above-mentioned terminal devices can be a terminal corresponding to the theater screen.

[0062] Step S216: if a relay request sent by a second terminal device among the multiple terminal devices is received through the web page and / or the APP client, verify the relay request;

[0063] An APP client is an application installed on a mobile device; in actual implementation, a special information release module is usually provided in the program convergence system for timely publishing the above-mentioned live event summary information. Specifically, the above-mentioned live event summary information can be pushed to multiple preset terminal devices in real time through the information release module using the Internet channel. The second terminal device can view and subscribe to the live event information of interest through the web page and / or the APP client, which can not only help the broadcast venue to keep abreast of various upcoming live events, but also make full preparations for subsequent program broadcasts. The second terminal device can send the above-mentioned broadcast request through the web page and / or the APP client, as well as the information release module, and these broadcast requests can be summarized and reviewed through the management software of the program convergence system, for example, reviewing whether the broadcast request carries information such as broadcast requirements that need to be provided.

[0064] Step S218, if the relay request verification is passed, obtaining a target relay video corresponding to the relay request from the stored multiple encrypted video signals, and sending the target relay video to the second terminal device;

[0065] Step S220, opening the play permission corresponding to the target relay video to the second terminal device, so that the target relay video is decrypted and decoded by the second terminal device, and the processed target relay video is played.

[0066] When the broadcast request is verified, the target broadcast video corresponding to the broadcast request can be automatically obtained, and the corresponding bit rate, resolution and other parameters are allocated to the second terminal device. At the same time, the playback authorization corresponding to the target broadcast video is issued to the second terminal device, so that the second terminal device can decrypt and play the received target broadcast video. This broadcast demand management mechanism can not only help the program aggregation system to reasonably allocate transmission resources and meet the personalized needs of different venues, but also provide reliable copyright protection and benefits for content rights holders.

[0067] After each broadcasting venue receives the program signal, its local terminal device used for playback needs to pass the authorization and authentication system to obtain the playback permission for the corresponding program content.

[0068] The specific steps can be as follows: (1) The terminal device used for playback in the venue initiates a playback request to the authorization and authentication system and provides device information and user identity credentials. (2) The authorization and authentication system can verify whether the terminal device and user have the corresponding playback permissions. (3) If the authorization is approved, the authorization and authentication system can issue a temporary decryption key to the terminal device, allowing it to decrypt and play the program content. (4) During the playback process, the authorization and authentication system can continuously monitor the behavior of the terminal device to ensure that no illegal operations occur.

[0069] Through this authorization and authentication mechanism, effective copyright protection can be implemented for the final program broadcasting link. Only approved terminal devices and users can legally decrypt and play related program content, thus effectively curbing the occurrence of illegal infringement.

[0070] The above-mentioned ultra-high-definition digital performance second-site broadcasting method realizes the remote broadcasting service of high-quality live programs by integrating advanced video acquisition and production, encoding transmission, copyright management and other technologies. At the same time, it also makes innovative designs for the release of on-site event information and the demand management of broadcasting venues.

[0071] The above-mentioned second-site broadcasting method of ultra-high-definition digital performing arts adopts 8K / 4K ultra-high-definition and high-frame rate video acquisition technology, which greatly improves the visual quality of the program and brings an immersive viewing experience. Through a unified program aggregation, distribution and copyright management mechanism, the safe dissemination of program content and the protection of user rights are ensured. This method also supports the simultaneous uploading of multiple ultra-high-definition programs, and performs encoding, transcoding and DRM encryption respectively to meet the playback needs of different venues. This method also provides on-site event information release and broadcast demand management functions to help broadcast venues keep abreast of event information and obtain playback authorization efficiently. The use of an authorization authentication mechanism ensures that only approved terminal devices and users can decrypt and play program content, effectively preventing copyright infringement. In addition, this method has strong compatibility and can smoothly transition to the ultra-high-definition video era, laying the foundation for the development of future video services.

[0072] The above-mentioned second live broadcasting method of ultra-high-definition digital performing arts is summarized as follows:

[0073] (1) Ultra-high-definition video acquisition and production: 8K / 4K ultra-high-definition cameras and 120 frames per second high-frame rate cameras can be used in conjunction with professional on-site switcher equipment to achieve delicate and realistic video acquisition and production, which lays the foundation for subsequent ultra-high-definition video transmission and playback.

[0074] (2) Unified program encoding and transcoding: The program aggregation system can convert video sources from various sites into 4K / 60p H.265 and other encoding formats. At the same time, it can generate transcoded versions with multiple bit rates and resolutions to meet the playback requirements of different terminal devices.

[0075] (3) Copyright protection based on ChinaDRM: ChinaDRM digital copyright management technology is used to implement full-process encryption protection for program content. Only authorized terminal devices and users can decrypt and legally play related programs.

[0076] (4) Efficient program distribution and transmission: Combined with CDN technology, program content is cached to edge servers to achieve nearby high-speed transmission. At the same time, the distribution control system can dynamically adjust the transmission strategy according to the status of the terminal device to optimize the viewing experience.

[0077] (5) Live event information release: This method can push detailed information of various live events to potential terminal devices in a timely manner through a dedicated information release module, helping them to understand and apply for broadcasting in a timely manner.

[0078] (6) Broadcast demand management mechanism: The program aggregation system can aggregate and review applications from broadcast venues, allocate appropriate program transmission resources and broadcast authorizations to them, and effectively manage broadcast demand.

[0079] The integrated innovation of the above-mentioned key technologies ultimately realizes the core value of the second live broadcast method of ultra-high-definition digital performing arts in this embodiment, namely, improving the audience experience, protecting content copyright, and meeting differentiated needs.

[0080] In general, this method has made significant innovations in improving audience experience, protecting content copyright, and meeting the needs of different venues. It provides a new solution for the transformation of live programs from live broadcast to remote broadcast, which will have an important impact on the development of the future video service industry.

[0081] For ease of understanding, a sports event is used as an example to illustrate the specific implementation process of this method:

[0082] At sports events, 8K / 120 frames / second cameras and professional switchers are used to capture and produce ultra-high-definition video of the game process. The encoding device converts the captured video signal into H.265 format, obtains the encoded video signal, and uploads it to the program aggregation system via the network.

[0083] The receiving server of the program convergence system receives the encoded video signal from the scene and performs 4K / 60p H.265 encoding transcoding and DRM encryption on it. The encrypted video signal can be stored on the central server, and the relevant activity information can be pushed to potential terminal devices through the information publishing module.

[0084] A stadium, as a broadcasting venue, viewed and subscribed to the information of the sports event through the portal website. After internal communication, the venue made a broadcasting request to the program aggregation system and provided relevant data such as venue information and audience size estimation.

[0085] The program convergence system’s management software reviewed and approved the venue’s broadcast request, allocated appropriate 4K / 60p stream transmission resources, and issued a temporary decryption key to the venue’s playback equipment through the authorization and authentication system.

[0086] On the day of the game, the audience in the stadium can watch the live broadcast images on the big screen on site. The decryption and playback of the live broadcast images are monitored in real time by the authorization and authentication system to ensure the copyright security of the content.

[0087] In order to meet the playback requirements of different terminal devices, while performing DRM encryption processing through the program aggregation system, it can also generate transcoded versions of various bit rates and resolutions for the encoded video information, such as 4K / 60P, 2K / 60P, 1080P, etc., and store them in the central server. During the distribution and playback process, the appropriate bit stream can be automatically selected for transmission based on the performance of the terminal device to ensure the best viewing experience.

[0088] In addition to live broadcasts, users can also check the summary information of live events released through the program aggregation system to learn about the performance time, location, participants and other details. Venues interested in broadcasting can apply through the information release module, and the program aggregation system will review and allocate corresponding transmission resources and playback authorization. This demand management mechanism is conducive to the rational allocation of system resources to meet the personalized needs of each venue.

[0089] The above-mentioned video program dissemination method solves the problems of the existing technology in video acquisition and production, signal transmission, copyright protection, etc. This method uses 8K / 4K ultra-high-definition and high-frame rate cameras on site for professional-level video acquisition and production, which greatly improves the video quality and smoothness, and brings an immersive viewing experience to the audience. At the same time, the program convergence system can receive the encoded video signals of each event site, and perform encoding transcoding and DRM encryption processing. Through unified encoding transcoding and DRM encryption protection, as well as the support of CDN distribution network, the secure transmission of content and copyright security are ensured. In addition, the method also innovatively designs the on-site event information release and broadcast demand management functions, which helps the broadcasting venue to timely understand the event information and efficiently obtain broadcasting licenses, meeting differentiated viewing needs. This method makes full use of advanced video technology, provides a new solution for the transformation of live programs from single on-site viewing to remote broadcasting, and has broad application prospects.

[0090] The embodiment of the present invention provides an ultra-high definition digital performance second live broadcasting device, such as Figure 3 As shown, the device includes: an acquisition module 30, which is used to acquire the original video signal corresponding to each activity site through a designated camera, encode the original video signal, and obtain an encoded video signal; wherein the designated camera includes at least one of the following: an 8K ultra-high-definition camera, a 4K ultra-high-definition camera, and a high frame rate camera; a transcoding processing module 31, which is used to transcode the encoded video signal according to a preset transcoding format to obtain a transcoded video signal; an encryption processing module 32, which is used to encrypt the transcoded video signal to obtain an encrypted video signal; an acquisition module 33, which is used to obtain metadata information corresponding to the encrypted video signal; a sending module 34, which is used to obtain the first terminal device Corresponding transmission parameters are used to send the encrypted video signal to the first terminal device through the Internet channel according to the transmission parameters, so that the first terminal device decrypts and decodes the encrypted video signal to obtain the original video signal; wherein the first terminal device has the authority to use the original video signal; a push module 35 is used to generate on-site activity summary information based on the metadata information corresponding to each activity site, and push the on-site activity summary information to a plurality of preset terminal devices; a relay module 36 is used to obtain a target relay video corresponding to the relay request if a relay request is received from a second terminal device among the plurality of terminal devices, and send the target relay video to the second terminal device, so as to relay the target relay video through the second terminal device.

[0091] The above-mentioned ultra-high-definition digital performance second live broadcasting device can use at least one of an 8K ultra-high-definition camera, a 4K ultra-high-definition camera and a high frame rate camera to collect the original video signal, which greatly improves the picture quality of the original video signal, and transmits the signal through the Internet channel. The encrypted video signal can be efficiently distributed to the first terminal device, improving the transmission and distribution delay problem. In addition, by encrypting the encoded video signal, an effective copyright protection mechanism can be provided to avoid infringements such as illegal broadcasting; the device can also push the generated live event summary information to multiple preset terminal devices, thereby meeting different viewing needs.

[0092] Furthermore, the device is also used to: save the encrypted video signal and metadata information.

[0093] Furthermore, the relay module is also used for: if a relay request sent by a second terminal device among multiple terminal devices is received through a web page and / or an APP client, verifying the relay request; if the relay request verification is successful, obtaining a target relay video corresponding to the relay request from the saved multiple encrypted video signals, and sending the target relay video to the second terminal device; opening the playback permission corresponding to the target relay video to the second terminal device, so as to decrypt and decode the target relay video through the second terminal device, and play the processed target relay video.

[0094] Furthermore, the sending module is also used to: obtain transmission parameters corresponding to the first terminal device, and send the encrypted video signal to the edge server according to the transmission parameters through the Internet channel, so as to send the encrypted video signal to the first terminal device through the edge server.

[0095] Furthermore, the encryption processing module is also used to: adopt the digital copyright management standard to encrypt the transcoded video signal to obtain an encrypted video signal.

[0096] Furthermore, each terminal device is a terminal corresponding to a theater screen.

[0097] Furthermore, the maximum frame rate corresponding to the camera is specified to be 120 frames per second.

[0098] An ultra-high-definition digital performing arts second on-site broadcasting device provided in an embodiment of the present invention has the same implementation principle and technical effects as those of the aforementioned ultra-high-definition digital performing arts second on-site broadcasting method embodiment. For the sake of brief description, for parts not mentioned in the embodiment of an ultra-high-definition digital performing arts second on-site broadcasting device, reference may be made to the corresponding contents in the aforementioned ultra-high-definition digital performing arts second on-site broadcasting method embodiment.

[0099] The embodiment of the present invention further provides an electronic device, see Figure 4 As shown, the electronic device includes a processor 130 and a memory 131. The memory 131 stores machine executable instructions that can be executed by the processor 130. The processor 130 executes the machine executable instructions to implement the above-mentioned ultra-high-definition digital performance second live broadcasting method.

[0100] Further, Figure 4 The electronic device shown further includes a bus 132 and a communication interface 133 , and the processor 130 , the communication interface 133 and the memory 131 are connected via the bus 132 .

[0101] The memory 131 may include a high-speed random access memory (RAM), and may also include a non-volatile memory, such as at least one disk storage. The communication connection between the system network element and at least one other network element is realized through at least one communication interface 133 (which may be wired or wireless), and the Internet, wide area network, local area network, metropolitan area network, etc. may be used. The bus 132 may be an ISA bus, a PCI bus, or an EISA bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 4 Only one bidirectional arrow is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0102] The processor 130 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the processor 130. The above processor 130 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present invention can be implemented or executed. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in conjunction with the embodiments of the present invention can be directly embodied as a hardware decoding processor for execution, or a combination of hardware and software modules in the decoding processor for execution. The software module may be located in a storage medium mature in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 131, and the processor 130 reads the information in the memory 131 and completes the steps of the method of the above embodiment in combination with its hardware.

[0103] An embodiment of the present invention also provides a machine-readable storage medium, which stores machine-executable instructions. When the machine-executable instructions are called and executed by a processor, the machine-executable instructions prompt the processor to implement the above-mentioned ultra-high-definition digital performance second live broadcast method. The specific implementation can be found in the method embodiment, which will not be repeated here.

[0104] A computer program product of an ultra-high-definition digital performance second live broadcast method provided in an embodiment of the present invention includes a computer-readable storage medium storing program code. The instructions included in the program code can be used to execute the method described in the previous method embodiment. The specific implementation can be found in the method embodiment, which will not be repeated here.

[0105] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program codes.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for second live broadcast of ultra-high definition digital performances, characterized in that: The method comprises: For each activity site, an original video signal corresponding to the activity site is collected by a designated camera, and the original video signal is encoded to obtain an encoded video signal; wherein the designated camera includes at least one of the following: an 8K ultra-high-definition camera, a 4K ultra-high-definition camera, and a high frame rate camera; According to a preset transcoding format, the encoded video signal is transcoded to obtain a transcoded video signal; Encrypting the transcoded video signal to obtain an encrypted video signal; Obtaining metadata information corresponding to the encrypted video signal; Acquire transmission parameters corresponding to the first terminal device, and send the encrypted video signal to the first terminal device through an Internet channel according to the transmission parameters, so that the first terminal device decrypts and decodes the encrypted video signal to obtain the original video signal; wherein the first terminal device has the authority to use the original video signal; Generate on-site activity summary information based on the metadata information corresponding to each of the activity sites, and push the on-site activity summary information to a plurality of preset terminal devices; If a relay request sent by a second terminal device among multiple terminal devices is received, a target relay video corresponding to the relay request is obtained, and the target relay video is sent to the second terminal device so as to relay the target relay video through the second terminal device.

2. The method according to claim 1, characterized in that The method further comprises: The encrypted video signal and the metadata information are saved.

3. The method according to claim 1, characterized in that If a relay request sent by a second terminal device among multiple terminal devices is received, the steps of obtaining a target relay video corresponding to the relay request, and sending the target relay video to the second terminal device so as to relay the target relay video through the second terminal device include: If a retransmission request sent by a second terminal device among the multiple terminal devices is received through the web page and / or the APP client, verify the retransmission request; If the relay request is verified to be successful, obtaining a target relay video corresponding to the relay request from the stored multiple encrypted video signals, and sending the target relay video to the second terminal device; The play permission corresponding to the target relay video is opened to the second terminal device, so that the target relay video is decrypted and decoded by the second terminal device, and the processed target relay video is played.

4. The method according to claim 1, characterized in that The step of obtaining the transmission parameters corresponding to the first terminal device and sending the encrypted video signal to the first terminal device according to the transmission parameters through the Internet channel includes: Acquire transmission parameters corresponding to the first terminal device, and send the encrypted video signal to the edge server according to the transmission parameters through an Internet channel, so as to send the encrypted video signal to the first terminal device through the edge server.

5. The method according to claim 1, characterized in that The step of encrypting the transcoded video signal to obtain the encrypted video signal comprises: The transcoded video signal is encrypted using a digital copyright management standard to obtain an encrypted video signal.

6. The method according to claim 1, characterized in that Each terminal device is a terminal corresponding to a theater screen.

7. The method according to claim 1, characterized in that The maximum frame rate corresponding to the specified camera is 120 frames per second.

8. An ultra-high definition digital performance second live broadcasting device, characterized in that: The device comprises: A collection module is used to collect the original video signal corresponding to each activity site through a designated camera, encode the original video signal, and obtain an encoded video signal; wherein the designated camera includes at least one of the following: an 8K ultra-high-definition camera, a 4K ultra-high-definition camera, and a high frame rate camera; A transcoding processing module, used to perform transcoding processing on the encoded video signal according to a preset transcoding format to obtain a transcoded video signal; An encryption processing module, used for performing encryption processing on the transcoded video signal to obtain an encrypted video signal; An acquisition module, used for acquiring metadata information corresponding to the encrypted video signal; a sending module, configured to obtain transmission parameters corresponding to the first terminal device, and send the encrypted video signal to the first terminal device according to the transmission parameters through an Internet channel, so that the first terminal device decrypts and decodes the encrypted video signal to obtain the original video signal; wherein the first terminal device has the authority to use the original video signal; A push module, used to generate on-site activity summary information based on metadata information corresponding to each of the activity sites, and push the on-site activity summary information to a plurality of preset terminal devices; The relay module is used to, if a relay request is received from a second terminal device among multiple terminal devices, obtain a target relay video corresponding to the relay request, and send the target relay video to the second terminal device so as to relay the target relay video through the second terminal device.

9. An electronic device, characterized in that: It includes a processor and a memory, the memory stores machine executable instructions that can be executed by the processor, and the processor executes the machine executable instructions to implement an ultra-high-definition digital performance second live broadcast method as described in any one of claims 1-7.

10. A machine-readable storage medium, characterized in that: The machine-readable storage medium stores machine-executable instructions. When the machine-executable instructions are called and executed by the processor, the machine-executable instructions prompt the processor to implement the second live broadcasting method of ultra-high-definition digital performances as described in any one of claims 1-7.

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