25 results about "Video coding format" patented technology

The invention provides a conference communication transmission method fusing audios and videos, which comprises the following steps that: a server establishes connection with a plurality of terminals, and configures audio and video coding formats of the terminals, including a unified coding format and an adaptive transcoding coding format; the server selects an adaptive transcoding encoding format of the terminal needing transcoding to carry out primary transcoding; screening and mixing the audio streams, and selecting at least one path of audio and video streams based on a first weighting algorithm for mixing; and finally, pushing the mixed audio and video streams to at least part of the subscription terminals based on a second dynamic weighting algorithm. According to the method, the audio is transcoded independently, and the transcoding frequency of the audio is reduced by combining the application of two types of coding formats, so that the operand and the occupation and investment of ports are reduced; the occupation of the code stream on the network bandwidth can be reduced, and meanwhile, the telephone and voice recognition service and the like which need a single stream are compatible and connected; furthermore, the stream can be pulled as required, so that the resource waste is reduced, the session success rate is improved, and high-quality session experience is provided.

The invention relates to the field of data storage and security, and discloses a distributed video storage and multi-level verification system and method based on a block chain to realize a safe, efficient, decentralized and traceable video data storage scheme. According to the method, a storage strategy is dynamically adjusted according to a video coding format, video data are fragmented, the fragmented video is encrypted through an anti-quantum algorithm, key separation and zero-knowledge verification are used to guarantee the security of the data, then the video data are stored to a plurality of edge nodes in a distributed manner, and index data of the video data are stored on a block chain. Stored video fragments are checked regularly through an on-chain and off-chain cooperative check mechanism, when a user requests to access the video, after the permission of the user is verified based on the smart contract of the block chain, the video fragments and decryption keys are acquired from corresponding edge storage nodes according to index data of the video, and the video fragments are decrypted. And after decrypting the video fragments by using the decryption key, splicing the video fragments into an original video.

The invention provides an audio and video decoding method and system of a browser, and the method comprises the steps: when an HTTP server pulls code stream data from a code stream database and sends the code stream data to a WebSocket server, a client receives the code stream data sent by the WebSocket server; the client sends the code stream data to the WASM module; the WASM module transcodes the code stream data to obtain transcoded code stream data; after the WASM module is loaded on the browser, code stream data obtained after transcoding is played; according to the method, the audio and video coding format of the code stream format which is not supported by the browser is transcoded into the proper coding format, and then the audio and video coding format is sent to the browser for playing, so that the browser does not need to be upgraded, and the adaptability of the browser is improved.

Embodiments of the present disclosure provide a method, an apparatus, an electronic device, a computer-readable storage medium, a computer program product, and a computer program for video decoding. The method obtains playback address information of a video to be played, the playback address information carrying encoding format information of the video to be played; obtains the video to be played in accordance with the playback address information; and, in progress of obtaining the video to be played asynchronously, acquires a hardware decoder based on the encoding format information of the video to be played; and decodes the obtained video to be played with the hardware decoder. Embodiments of the present disclosure carry the encoding format information of the video to be played in the playback address information of the video, so that the asynchronous acquisition of the hardware decoder can be adopted in progress of the startup of video playback.

The present disclosure provides methods, apparatuses, and systems for processing content for multiple displays. The present implementation is more particularly directed to outputting video content from a mobile computing device to a plurality of displays coupled to a docking station. In some aspects, a multi-screen controller for a mobile computing device may receive pixel data associated with a plurality of displays from one or more image sources, and may aggregate the received pixel data into a plurality of frames associated with the plurality of displays, respectively. The multi-screen controller transcodes each frame of pixel data from a first video coding format associated with one or more image sources to a second video coding format associated with a docking station coupled to the display, and outputting each frame of transcoded pixel data to a docking station for display on a respective one of the displays.

The invention relates to the technical field of computers, in particular to a live video processing method and device, electronic equipment and a storage medium, and aims to improve the accuracy of live video transcoding. The method comprises the following steps: in response to a live broadcast watching request of downlink equipment, acquiring the number of audiences and video quality parameters of a corresponding target live broadcast room at the current moment, and a downlink video coding format supported by the downlink equipment; determining a target transcoding rule corresponding to the downlink device based on the audience number, the video quality parameter and the downlink video coding format; and according to the target transcoding rule, transcoding an original video stream generated in the target live broadcast room to obtain a target video stream corresponding to the downlink device, and sending the target video stream to the downlink device. Therefore, not only is the number of audiences considered, but also the video quality parameter and the downlink video coding format are considered, and the accuracy of live video transcoding is improved, so that the target video stream can be successfully played on different downlink devices.

The invention provides a video coding method, electronic equipment, a chip system and a readable storage medium, the method is applied to the electronic equipment, and the method comprises the following steps: obtaining a current frame in response to a recording operation of a target video, the current frame comprising images of different visual angles; controlling an encoder to encode the current frame according to the difference between the current frame and a reference frame of the current frame in the firmware of the video processing unit to obtain a bit stream of the current frame; writing the bit stream of the current frame into the initial header file through a video processing module to obtain a target file of the current frame; according to a target file corresponding to each frame in the target video, a three-dimensional video in a multi-view efficient video coding format is obtained, the video processing module is a software module in the electronic equipment, and the video processing unit firmware and the encoder are hardware modules of the electronic equipment. Therefore, coding is carried out in a software-hardware combination mode, the power consumption of coding can be reduced, and the flexibility of coding is improved.

The present disclosure relates to methods, apparatus, systems, and non-transitory computer-readable storage media for video coding using an implicit video frame output process. According to some examples, a computer-implemented method includes receiving a video at a content delivery service; encoding, by the content delivery service, the video into an encoded video; generating, by the content delivery service, at least one open bitstream unit from the encoded video according to a video coding format that does not utilize a show existing frame syntax element set to one to indicate a frame in a reference picture buffer of a decoder is to be displayed; and transmitting the at least one open bitstream unit from the content delivery service to the decoder.

The invention relates to the technical field of audio decoding, and discloses a decoding method for identifying multimedia video and audio, which comprises the following steps of: 1, an installation and configuration step: providing a compression package containing an ffmpeg tool, decompressing and configuring an environment variable by a user, and ensuring that the ffmpeg can be directly called in a command line; step 2, a file input step: a user inputs a video or audio file path to be identified through a command line, and the format is an ffmpeg-i file path; and step 3, executing an identification step, automatically analyzing and displaying detailed coding information of the file by an ffmpeg tool according to an input file path, including a video coding format, an audio coding format, a resolution ratio and a frame rate. The invention provides a decoding method for identifying multimedia videos and audios, and solves the problem of low bug submission accuracy caused by lack of effective tools for identifying video and audio decoding formats by testers.

This disclosure provides methods, devices, and systems for processing content for multiple displays. The present implementations more specifically relate to outputting video content from a mobile computing device to multiple displays coupled to a docking station. In some aspects, a multi-screen controller for a mobile computing device may receive pixel data associated with multiple displays from one or more image sources and may aggregate the received pixel data into multiple frames associated with the multiple displays, respectively. The multi-screen controller transcodes each frame of pixel data, from a first video coding format associated with the one or more image sources to a second video coding format associated with a docking station coupled to the displays, and outputs each frame of transcoded pixel data to the docking station for display on a respective one of the displays.

The application discloses a video decoding method and device, electronic equipment and a storage medium. The method comprises the following steps: obtaining a cumulative probability table and a count value of a video coding format from cumulative probability distribution information stored in a memory and storing the cumulative probability table and the count value into a random access memory, wherein the cumulative probability distribution information comprises a storage mode and the cumulative probability table and the count value arranged together according to the storage mode; decoding the coding format of a to-be-decoded region of the video according to the cumulative probability table in the random access memory, and adding one to the count value corresponding to the cumulative probability table; if a next syntax is different from a currently decoded syntax during the decoding process, writing back the cumulative probability table of the currently decoded syntax to the random access memory; and when the decoding of the coding format of the to-be-decoded region of the video is completed, writing the cumulative probability table written back to the random access memory into the memory, and clearing the count value corresponding to all the cumulative probability tables to update the cumulative probability distribution information.

The utility model relates to the technical field of video processing, and discloses an 8K video processing terminal device, which comprises a video decoding module, an 8K video transcoding module and a power supply module which are electrically connected in sequence, the video decoding module is electrically connected with the 8K video transcoding module, and the video decoding module and the 8K video transcoding module are both electrically connected with the power supply module; and the 8K video transcoding module is electrically connected with the display end of the LED screen. Through multi-aspect structural improvement, the 8K video processing terminal is adopted, and the video decoding module and the 8K video transcoding module in the 8K video processing terminal are mutually configured, so that a clearer and finer image effect can be provided; the video decoding module is provided with a high-performance decoding chip and a high-performance transmission interface, so that smooth playing of videos is ensured; the 8K video transcoding module supports various video coding formats and transmission protocols, and can be compatible with different video sources and display devices.

This application discloses a display device, a media asset playback apparatus, and a media asset playback method, comprising: acquiring a media display description document for a media asset file; acquiring a first description tag and a first channel tag based on the media display description document, wherein the first description tag is used to characterize that the media asset file includes extended layer data, and the extended layer data is used to characterize that the video encoding format can decode the media asset file to obtain ultra-high definition resolution; inserting the first description tag into the first channel tag to convert the first description tag into a second channel tag; establishing a first media asset track based on the first channel tag, and establishing a second media asset track based on the second channel tag; and synchronously decoding the first media asset track and the second media asset track to play the media asset file. This application enables the display device to support the operation of SHVC format media asset files and can simultaneously demultiplex the base layer data and extended layer data, so that the display device can play ultra-high definition resolution media asset files, thereby improving the user experience.

The invention discloses an implementation method for a free conversion function of a horizontal screen and a vertical screen of a camera, and belongs to the technical field of camera equipment. According to the method, a camera module integrating a Gyro sensor is combined with a hardware structure capable of rotating manually or automatically, attitude information of the camera module is obtained in real time, a UI display interface and a video coding format are adjusted by a control unit according to attitude data, and free switching between a horizontal screen and a vertical screen is achieved. The camera module is connected with the rotating device through screw joint and pin positioning, so that the rotating stability and precision are ensured. When the camera module is manually rotated by 90 degrees, the spring ball structure locks the target position, and the control unit synchronously switches coding formats (such as 16: 9 to 9: 16) and adjusts UI coordinate mapping to adapt to the vertical screen display requirement. The problem that a traditional camera needs physical rotation or support assistance is solved, the shooting flexibility is improved, and the camera is suitable for diversified scenes such as news interview and live broadcast.

The invention discloses a label of a media file, a system, a method and a device for processing image data. An example method includes performing a conversion between a visual media file and a bitstream. In accordance with the media file format, the visual media file includes image items, each image item including one or more picture sequences. In accordance with the video codec format, the bitstream comprises access units, each access unit comprising one or more pictures, each picture belonging to a layer. The video codec format defines a plurality of levels. The media file format specifies that the bitstream is represented in a file having a particular tag, and one or more levels for representing the video in the bitstream are independent of the particular tag.

The invention discloses a video fusion method and device based on an edge computing platform. The method comprises the following steps: parallelly pulling each path of to-be-fused video stream by using MPI (Message Passing Interface) multithreading; decoding all the video streams to be fused; performing affine transformation on each video frame in each decoded video stream, and determining an energy correlation matrix corresponding to the video frame based on an affine transformation result corresponding to each video frame; storing the feature points and the edge feature angular points corresponding to the video frames into the same Jason file; replacing the data of the pixel points in the video frame corresponding to the feature points with the feature point data corresponding to the feature points in the Jason data file; and filling the NPU fusion matrix corresponding to each video frame based on each replaced video frame data to determine an edge pixel range of each video frame, and performing edge reasoning to obtain a fused video. The method solves the problems of incompatibility of video protocols, non-uniform video coding formats, limited processing performance and the like.

The present invention discloses a solution for national standard stream without plug-ins, which relates to the technical field of information processing. The present invention includes creating a signaling interaction service that supports the GB28181 protocol, a stream parser that supports the parsing of national standard streams, a transcoding service that supports multiple audio and video coding formats, a streaming media service that supports both pulling and pushing streams, and supports the RTSP protocol, RTMP protocol, HTTP-FLV protocol, HLS protocol, and WebSocket protocol, a central management service that supports service scheduling, negotiation operation, and external user interaction, and a national standard stream monitoring service that monitors the access status, running status, and running quality of the national standard stream in real time. The solution for national standard stream without plug-ins of the present invention can realize the national standard stream without plug-ins, is non-closed, can be used externally, and has good applicability and high expandability.

The invention discloses a video data encryption transmission method based on secure multi-party computing, and belongs to the field of encryption transmission in digital video monitoring. The implementation method comprises the following steps: splitting video data into a plurality of key frame sequences according to a video coding format, encrypting each key frame sequence by using different symmetric keys to obtain encrypted frames, and splitting the symmetric keys into a plurality of sub-key frames by using a Shamir (t, n) threshold secret sharing scheme; after receiving, the terminal analyzes the encrypted frame into mapping from a timestamp to a local sequence number and mapping from the sequence number to encrypted data, and after receiving, the server analyzes the sub-key frame into mapping from the sequence number to a sub-key; when a user needs to decrypt encrypted video data of a part of time periods, a time period to be decrypted is analyzed into a serial number column at a terminal, the encrypted video data are acquired, a dynamic password required for generating a sub-key frame corresponding to an access serial number column is configured on a server, the sub-key frame is acquired from the server side through the dynamic password, and the sub-key frame is decrypted. And decrypting the encrypted video data of the partial time period.

The present invention provides a video streaming system and method, comprising: a coding conversion module, used for sending a playback rule of a player SDK to a preset video streaming system, performing coding conversion on a camera in the video streaming system according to the playback rule, and determining the conversion code; a packaging module, used for slicing and packaging the video stream corresponding to the camera in batches according to the playback rule and the conversion code, and determining the packaging data; a transmission module, used for converting the video coding format and adjusting the video frame of the packaged data based on a preset national standard 28181 protocol, determining the adjusted video, and transmitting the adjusted video to a preset server.

The embodiment of the present invention discloses an audio and video intercommunication method, device, equipment and storage medium. The method includes: responding to an audio and video intercommunication request sent by a requested client in the same local area network; after the media negotiation is passed, obtaining the requesting client that the requested client requests to intercommunication with, and detecting whether it is located in the same local area network as the requesting client; if not, when the client type of the requested client is not compatible with the target coding format, converting the collected real-time audio and video stream into an appropriate audio and video stream of the target coding format; and forwarding it to the next server that matches the requesting client. Through the above method, the problem that the audio and video cannot be intercommunication caused by the inconsistent video coding format between the requested client and the requesting client is solved. Flexible audio and video interaction between the requested client and the requesting client can be achieved, expanding the applicable scenarios of the audio and video intercommunication system, and greatly meeting the audio and video intercommunication needs of users.

A video decoder may be configured to: determine that a block of video data is formatted according to a 4:4:4 video coding format; determine that the block of video data is encoded in an intra-prediction mode; determine to disable a minimum chroma intra prediction unit (SCIPU) for the block in response to determining that the block has a 4:4:4 video coding format; decode the block of video data based on the determination to disable the SCIPU; and output decoded video data comprising a decoded version of the block.

This disclosure provides methods, devices, and systems for processing content for multiple displays. The present implementations more specifically relate to outputting video content from a mobile computing device to multiple displays coupled to a docking station. In some aspects, a multi-screen controller for a mobile computing device may receive pixel data associated with multiple displays from one or more image sources and may aggregate the received pixel data into multiple frames associated with the multiple displays, respectively. The multi-screen controller transcodes each frame of pixel data, from a first video coding format associated with the one or more image sources to a second video coding format associated with a docking station coupled to the displays, and outputs each frame of transcoded pixel data to the docking station for display on a respective one of the displays.

The present invention provides a conference communication transmission method integrating audio and video, and the steps include: a server establishes a connection with multiple terminals, and configures the audio and video encoding format of each terminal, including a unified encoding format and an adaptive transcoding encoding format; the server selects the adaptive transcoding encoding format of the terminal to be transcoded and performs a transcoding; then the audio stream is screened and mixed, and at least one audio and video stream is selected for mixing based on a first weighted algorithm; finally, the mixed audio and video stream is pushed to at least part of the subscribed terminals based on a second dynamic weighted algorithm. The present invention reduces the number of audio transcoding times by transcoding the audio separately and combining the application of two types of encoding formats to reduce the amount of calculation and port occupancy and investment; it can also reduce the occupation of network bandwidth by the code stream, and at the same time be compatible with telephones and voice recognition services that require a single stream for docking; further, the stream can be pulled as needed, thereby reducing resource waste, improving the success rate of the session, and providing a high-quality session experience.

Systems, methods and apparatus for processing image data are described. One example method includes performing a conversion between a visual media file and a bitstream. The visual media file comprises a sequence of one or more pictures according to a media file format, and the bitstream comprises one or more access units according to a video coding format. The bitstream is coded according to the video coding format. The media file format specifies that an image item of a specific type value in the visual media file includes a single access unit of the bitstream. The single access unit is either an Intra Random Access Picture (IRAP) access unit or a Gradual Decoding Refresh (GDR) access unit according to the video coding format. All pictures in the GDR access unit are identified as a recovery point in the bitstream.

Systems and methods for providing provenance authentication of content. C2PA and other open standards for provenance metadata and watermarking can be used in combination to enable social media platforms to easily identify and retrieve from video servers authentic instances of broadcast video content that is included in user-generated videos. Gaps in these standards that could impede interoperability are addressed by providing protocols that for discovery, launch, and synchronization of network services, such as C2PA, via watermarking. For example, a method is provided for announcement of C2PA services in ATSC watermark protocols. Also, guidelines are disclosed for the interpretation and use of the C2PA asset reference assertion field and expectations around video encoding formats, video server features, and access controls that are necessary for its effective use in promoting availability of authentic video.