25 results about "Elementary stream" patented technology

Low- to ultralow-latency content delivery via real-time transport protocol (RTP) is provided. In an example, transport packets, which carry a packetized elementary stream (PES), are selectively marked based on frame size. More particularly, if a number or size of packets needed to transport a picture or PES packet exceeds a threshold, they are marked for preferential processing, such as low latency, low loss, and scalable throughput (L4S) processing. If the number or size of packets is below the threshold, they are marked for default or non-preferential processing. The marking may be applied to entire pictures, tiles, and / or slices. Related apparatuses, devices, techniques, and articles are also described.

A screen mirroring sharing method and apparatus, used for realizing screen mirroring sharing. The method comprises: when a call connection has been established between a first device and a second device, the first device acquires first instruction information, the first instruction information being used for instructing to share screen mirroring information; then the first device receives the screen mirroring information from a third device on the basis of the first instruction information, and extracts an elementary stream (ES) of the screen mirroring information; and finally, the first device plays the ES and transmits the ES to the second device. According to the method, a first device can directly extract an ES of screen mirroring information and transmit the ES to a peer device, so that the time for decoding, screen recording, and re-encoding is omitted, and thus the end-to-end time delay of screen mirroring sharing is greatly reduced. Moreover, the method can improve the picture precision and improve the picture experience effect. In addition, the content not desired by a user can be prevented from being transmitted to the peer device, thereby improving the user experience.

A mechanism for processing video data is disclosed. Information in a sequence parameter set (SPS) in a versatile video coding (VVC) elementary stream is determined. Rules specify that the number of units in a tick (num_units_in_tick) and the time scale should not change between video sequences in the VVC elementary stream when present in the SPS. A conversion is performed between visual media data and a media data file based on the SPS.

The present invention relates to a method 100 and a system configured to generate several target videos from an input video using different sets of target features. The invention involves obtaining 110 the input video, selecting 120 the sets of target features, comparing 130 with the input feature set, and generating 140 sets of encoding parameters to modify the data in the data fields to be modified. Then, encoders are initialized 160 with these sets of encoding parameters, and a single decoding 170 is performed on the input video. The extracted video, audio, and data frames are then encoded 180 in parallel using the initial N encoders. Finally, each elementary stream is multiplexed 190 to obtain 191 the target videos. Fig. 1

Systems and methods relating to full motion video (FMV) routing in one-way transfer (OWT) systems are described herein. The present technology modifies or adds packetized elementary streams (PESs) of video streams, that are sent from the low-trust side of the OWT system, with a global unique identifier (GUID) that is used as an identifier to determine a particular destination on the high-trust side of the OWT system. The enriched video stream is then transmitted through an OWT system that provide high reliability for the enriched video stream. When the enriched video stream is received on the high-trust side, the GUID from the PES is extracted and used to identify destination addresses for destination devices in the high-trust computing environment. The video stream is then delivered to the destination devices having the corresponding destination addresses.

The invention discloses a multi-device cooperative decoding method, device and equipment, and the method comprises the steps: obtaining to-be-decoded data from a main device, extracting a basic stream, obtaining a non-local basic stream in the basic stream, splitting the non-local basic stream into sub-basic streams, distributing the sub-basic streams to at least one target auxiliary device for auxiliary decoding, and finally transmitting the sub-basic streams back to the main device. Through the method, the calculation burden of the master device can be effectively reduced, the master device does not need to independently undertake a complete decoding task of a high-quality video, but the master device performs cooperative decoding, so that the decoding efficiency is effectively improved, and the problem that the high-quality video cannot be efficiently decoded due to insufficient calculation resources of the master device is solved.

The application discloses a 4D Gaussian sputtering compression method based on UV mapping, relates to the technical field of video basic stream processing, and mainly comprises the following steps: converting the three-dimensional coordinates of the center point of each 3D Gaussian sputtering basic unit in a 4D Gaussian sputtering sequence into spherical coordinates through coordinate conversion, and mapping and constructing the azimuth and polar angle in the spherical coordinates into a two-dimensional UV grid representation; through multi-round iterative sampling, selecting the 3D Gaussian sputtering basic unit with the maximum radial distance in each round grid unit as high-priority data to construct a multi-layer UV mapping; collecting all the 3D Gaussian sputtering basic units that are not selected after iterative sampling and reordering them as detail supplement data; and splitting the attribute data of the 3D Gaussian sputtering basic unit into corresponding bit components based on the channel number of a video codec and encapsulating the attribute data into YUV format data to input the video codec for compression. The application can adapt to the input requirements of a standard video codec without training.

An apparatus includes means for providing signal information to identify an atlas identifier (602) on a sample of a volumetric media track or on a volumetric media track in a multi-track container; wherein the signal information enables a file parser to link the volumetric media track with a different atlas identifier derived from a volumetric media elementary stream (604); and wherein the file parser is capable of reconstructing the volumetric media elementary stream (606) based on the signal information and data encapsulated in the multi-track container.

A method for transcoding a digital video stream that includes transcoding using a transcoder a video stream that includes presentation time stamps for the video stream together with an audio stream that includes presentation time stamps for the audio stream in a manner that modifies the presentation time stamps for the video stream in a manner such that a plurality of first values for presentation time stamps for a first set of video frames of the video stream are modified to a plurality of second values for presentation time stamps for the second set of video frames. The audio stream includes embedded first values for presentation time stamps in a first location. The method includes determining an offset of the second values of the second set of presentation time stamps of the transcoded video stream based upon the first values of the set of presentation time stamps embedded in the audio stream from the transcoder. The method includes combining the transcoded video stream and an associated audio stream based upon the offset. Preferably, the transcoder also modifies the audio time stamps. Preferably, the audio stream includes the embedded first values. Preferably, the offset is determined by taking the diff between the audio PTS in the PES and the embedded PTS in the audio packet (private data or embedded in the audio frame).

Method, apparatus, and system for haptic signal processing are provided. The process may include receiving a media stream comprising at least one haptic track and at least one media track. The process may include obtaining at least one MIHS unit from the media stream and obtain a respective start time associated with the at least one MIHS unit from the media stream. The process may include the media stream being rendered based on the respective start time. Each of the at least one MIHS unit is non-overlapping in time, a MIHS unit among the at least one MIHS unit comprises a start time for the MIHS unit, and the MIHS unit is associated with one or more haptic channel.

A method for decoding a video stream is described. The method comprises: receiving a video stream at a server application, the video stream being encoded according to a multi-layer coding scheme; passing, to a base decoder, an encoded base stream comprised by the video stream, for obtaining a decoded base stream; and passing, to an enhancement decoder, an encoded enhancement stream comprised by the video stream for decoding, wherein an original input video may be reconstructed from the decoded base stream and the decoded enhancement stream.

A radio-link software distribution method to be implemented by a computerized software distribution system (1), characterized by: Splitting a software image to be distributed into a plurality of split image parts; Encapsulating the plurality of split image parts into a plurality of data streams, respectively, and parallel broadcasting of data streams, characterized in that each of the data streams is a private packet elementary stream in accordance with an MPEG-2 standard.

The invention discloses an audio and video transmission method and system, and relates to the technical field of audio and video transmission, and the method comprises the following steps: 1, building a communication link, specifically, initializing connection; adding a local media track; the sending end creates a session invitation and sends the session invitation to the receiving end, and after receiving the session invitation, the receiving end sets remote description, creates a session response and returns the session response to the sending end; the sending end sets far-end description; the two parties start to exchange interactive connection to establish candidate addresses; and after the channel connection is successful, monitoring data or media streams. And step 2, data transmission in an actual channel is carried out: when point-to-point connection is successfully established (the connection supports remote peer-to-peer connection, maintenance and monitoring, and the connection is closed when no connection is needed), data transmission is carried out through a data construction transmission mode model. And step 3, confirming the basic flow of audio and video transmission. According to the method, the content is packaged into the pull stream interface and the push stream interface, aiming at the asynchronous execution characteristic of webpage real-time communication, all the content is packaged into success and failure callback with an asynchronous result object, and each step has state return.

The invention discloses a 4D Gaussian sputtering compression method based on UV mapping, and relates to the technical field of video elementary stream processing, and the method mainly comprises the steps: converting a central point three-dimensional coordinate of each 3D Gaussian sputtering elementary unit in a 4D Gaussian sputtering sequence into a spherical coordinate through coordinate conversion, mapping an azimuth angle and a polar angle in the spherical coordinates and constructing a two-dimensional UV grid representation; through multiple rounds of iterative sampling, selecting a 3D Gaussian sputtering basic unit with the maximum radial distance in each round of grid units as high-priority data to construct multilayer UV mapping; collecting all unselected 3D Gaussian sputtering basic units after iterative sampling, and reordering the unselected 3D Gaussian sputtering basic units as detail supplementary data; and splitting the attribute data of the 3D Gaussian sputtering basic unit into corresponding digit components based on the channel number of the video codec, packaging the corresponding digit components into YUV format data, and inputting the YUV format data into the video codec for compression. According to the invention, the input requirement of a standard video codec can be adapted without training.

Method, apparatus, and system for haptic signal processing are provided. The process may include receiving a media stream comprising at least one haptic track and at least one media track. The process may include obtaining at least one MIHS unit from the media stream and obtain a respective start time associated with the at least one MIHS unit from the media stream. The process may include the media stream being rendered based on the respective start time. Each of the at least one MIHS unit is non-overlapping in time, a MIHS unit among the at least one MIHS unit comprises a start time for the MIHS unit, and the MIHS unit is associated with one or more haptic channel.

According to a first aspect of the invention a method for generating a representation of an input video is provided, the method comprising: receiving a base stream and a first enhancement stream, the base stream and the first enhancement stream together providing a representation of a first rendition of the input video; comparing a second rendition of the input video and the base stream to generate a second enhancement stream, the second enhancement stream being an alternative enhancement stream to the first enhancement stream such that the base stream and the second enhancement stream together provide a representation of the second rendition of the input; and outputting the base stream and / or the first enhancement stream, and second enhancement stream.

An apparatus suitable for transferring a video signal which is to be output as an encoded signal, the encoded signal to include a base stream and at least one enhancement stream. The enhancement stream is suitable for combining with the base stream to reconstruct the input video signal. The apparatus is configured to generate an adjusted enhancement stream by providing a deviation which is identifiable in a video signal constructed using a base encoded stream and the adjusted enhancement stream. The deviation is determined based on an intended destination of the encoded video signal which includes the adjusted enhancement stream and is characteristic of the output destination. The deviation is added to a value indicative of a constant (or constants) of a part of at least one frame of the enhancement stream. The encoded video signal is output with the adjusted enhancement stream and the base encoded stream. The adjusted enhancement stream may be a Low Complexity Enhancement Video Coding (LCEVC) Level 1 stream. A corresponding system, detector and method are also provided.

The application discloses a kind of generation and processing method and its device of transmission stream and program stream.Processing method and device can analyze the dependent relationship identification information in transmission stream or program stream, to obtain the dependent relationship between main bit stream and knowledge bit stream, and according to the dependent relationship, to obtain main bit stream and the knowledge bit stream referred to, and with the knowledge image in knowledge bit stream as reference image, the image in main bit stream is decoded.Generation method and device can put main bit stream and the knowledge bit stream dependent as basic stream into transmission stream packet package or program stream packet package, and put dependent relationship identification information in the transmission stream packet package or program stream packet package to describe the dependent relationship between the basic stream to which the main bit stream belongs and the basic stream to which the knowledge bit stream belongs.The application can conveniently and compatibly realize the dependent relationship description between main bit stream and knowledge bit stream, and also does not waste data amount.

A projection screen sharing method and device are used for realizing projection screen sharing. The method comprises the following steps: under the condition that a call connection is established between a first device and a second device, the first device obtains first instruction information, and the first instruction information is used for indicating shared screen projection information; further, the first device receives screen projection information from the third device based on the first instruction information, and extracts an elementary stream ES of the screen projection information; and finally, the first device plays the ES and sends the ES to the second device. Based on the method, the first device can directly extract the ES of the screen projection information and transmit the ES to the opposite terminal, the time of decoding, screen recording and coding is reduced, and the time delay of screen projection sharing end-to-end is greatly reduced. Moreover, the method can improve the picture precision, and improves the picture experience effect. Meanwhile, non-user expected content can be prevented from being transmitted to an opposite end, and the user experience is improved.

Low- to ultralow-latency content delivery via real-time transport protocol (RTP) is provided. In an example, transport packets, which carry a packetized elementary stream (PES), are selectively marked based on frame size. More particularly, if a number or size of packets needed to transport a picture or PES packet exceeds a threshold, they are marked for preferential processing, such as low latency, low loss, and scalable throughput (L4S) processing. If the number or size of packets is below the threshold, they are marked for default or non-preferential processing. The marking may be applied to entire pictures, tiles, and / or slices. Related apparatuses, devices, techniques, and articles are also described.

The invention discloses a media data transmission method, apparatus and device, and a readable storage medium. The method comprises the steps of receiving an SMTP elementary stream mode data packet; judging whether the SMTP elementary stream mode data packet contains metadata corresponding to the media data or not; if yes, decoding the SMTP elementary stream mode data packet, and performing media content presentation according to a first elementary stream mode SMTP load obtained by decoding; if not, decoding the SMTP basic flow mode data packet to obtain a second basic flow mode SMTP load; acquiring a signaling mode data packet, and decoding the signaling mode data packet to obtain a second metadata head; and performing media content presentation according to the second basic stream mode SMTP load and the second metadata head. The media data does not need to be subjected to file packaging, so that the transmission efficiency of the media data is improved, and the video quality is improved.

A telecommunications procedure involves capturing communication traffic metadata from one or more communication applications in a vehicle. The procedure additionally includes identifying an achievable communication data rate for an initial communication option along a planned vehicle route.Furthermore, if all of the following are true, the procedure includes using the first communication option for communication with the communication applications: basic traffic of the communication applications is supported by the first communication option; the data rate gaps during which the achievable communication data rate will be lower than a required communication data rate for the communication applications will be lower than a maximum latency; the data communication deficits during which the achievable communication data rate will be lower than the required communication data rate are resolved by using the first communication option at or before the maximum latency.

Systems and methods relating to full dynamic video (FMV) routing in a one-way transport (OWT) system are described herein. The present technology utilizes a globally unique identifier (GUID) to modify a packed elementary code stream (PES) of a video stream sent from a low-trust side of an OWT system or to add the globally unique identifier thereto, which is used as an identifier to determine a particular destination on a high-trust side of the OWT system. The enhanced video stream is then transmitted through an OWT system that provides high reliability for the enhanced video stream. When an enhanced video stream is received at the high trust side, the GUID from the PES is extracted and used to identify a destination address for a destination device in the high trust computing environment. The video stream is then delivered to destination devices having respective destination addresses.

An apparatus suitable for transferring a video signal which is to be output as an encoded signal, the encoded signal to include a base stream and at least one enhancement stream. The enhancement strea