Abstract: A device generates, stores, or obtains a file that complies with a restriction specified in a file format to which the file conforms. The restriction requires that for each respective Intra Random Access Point (IRAP) picture, a parameter set required for decoding the respective IRAP picture is in at least one of the following: a sample entry of the respective IRAP picture's track that is applicable to the respective IRAP picture's sample, a sample entry of a non-corresponding track for the respective IRAP picture carrying a reference layer of the respective IRAP picture's layer, the respective IRAP picture's sample, or a temporally collocated sample of the respective IRAP picture's sample in a track of that carries the reference layer.

Abstract: A device for processing a bitstream including video data, such as a demultiplexer, extracts a descriptor from the bitstream, wherein the bitstream includes layers of video data for operation points, separate from the descriptor, such that each operation point includes one or more of the layers of video data, and wherein the descriptor includes a set of profile, tier, and level (PTL) structures and data that associates each of the layers of each of the operation points with a corresponding one of the PTL structures, extracts video data for one of the operation points from the bitstream based at least in part on the PTL structures to which the layers of the one of the operation points correspond, and provides the extracted video data to a video decoder.

Abstract: A video device for processing multi-layer video data includes a data storage medium configured to store the multi-layer video data and one or more processors configured to obtain the multi-layer video data; store the multi-layer video data in a file format; store representation format information for each operation point of the multi-layer video data in an operation points information (oinf) box for the file format; and generate a file of video data formatted according to the file format.

Abstract: Provide are a liquid crystal compound represented by formula I, and a liquid crystal mixture comprising the compound A lateral trifluoromethyl-containing liquid crystal compound having the structural characteristics of Formula I not only has a negative dielectric anisotropy (??), an appropriate optical anisotropy (?n), a higher clearing point (CP), a prominent low-temperature miscibility with other liquid crystals, and a low rotary viscosity (?1), but also has a good stability to UV and high temperatures, particularly, a negative dielectric anisotropy. Same can be applied to the formulation of liquid crystal compositions of positive and negative types, and it is particularly prominent that same has the advantages of a good solubility at low temperatures and a high transmittance.

Abstract: A computing device receive a bitstream comprising a plurality of coded slice NAL units encapsulating RBSPs for respective slice segments of a slice of a picture. The slice segments including an independent slice segment and one or more dependent slice segments. The picture is partitioned into a plurality of tiles, including a first tile and a second tile. The slice segments include one or more slice segments that contain CTUs of the first tile and one or more slice segments that contain CTUs of the second tile. The computing device generates a file storing the bitstream. As part of generating the file, the computing device defines a tile region in the file. The tile region comprises an integer number of tiles forming a rectangular region encoded in one or more of the slice segments. The rectangular tile region includes the first tile and not the second tile.

Abstract: A coding device configured to code video data that includes a buffer memory configured to store pictures of the video data and a at least one processor implemented in circuitry that is in communication with the buffer memory such that the processor is configured to code at least two pictures of a single coded video sequence (CVS) of the video data where each picture of the at least two pictures is associated with an identical picture order count (POC) value and where the at least two pictures are different from one another, associate respective data with each of the at least two pictures of the single CVS, and identify, for inclusion in a reference picture set, at least one picture among the at least two pictures based on the identical POC value associated with the at least two pictures and the respective data associated with the at least one picture.

Abstract: A computing device may obtain, from a first bitstream that includes a coded representation of the video data, a Supplemental Enhancement Information (SEI) message that includes an indication of an extraction mode that was used to produce the first bitstream. If the extraction mode is the first extraction mode, the first bitstream includes one or more coded pictures not needed for correct decoding of the target output layer set. If the extraction mode is the second extraction mode, the first bitstream does not include the one or more coded pictures not needed for correct decoding of the target output layer set.

Abstract: A method of coding video data includes upsampling at least a portion of a reference layer picture to an upsampled picture having an upsampled picture size. The upsampled picture size has a horizontal upsampled picture size and a vertical upsampled picture size. At least one of the horizontal or vertical upsampled picture sizes may be different than a horizontal picture size or vertical picture size, respectively, of an enhancement layer picture. In addition, position information associated with the upsampled picture may be signaled. An inter-layer reference picture may be generated based on the upsampled picture and the position information.

Abstract: A method, electronic device, computer program product, system and circuit assembly are provided for allocating one or more redundant pictures by taking into consideration the information content of the primary pictures, with which the redundant pictures would be associated. In particular, primary pictures that are determined to be more sensitive to transmission loss or corruption may be allocated one or more redundant pictures, while those that are less sensitive may not be so allocated. By selectively allocating redundant pictures to only those primary pictures that are more sensitive, the method disclosed reduces the amount of overhead associated with redundant pictures and increases the coding efficiency, without sacrificing the integrity of the video data.

Abstract: Optical devices and systems are depicted and described herein. One example of the optical system is disclosed to include a semiconductor layer, a first metal strip positioned adjacent to a first surface of the semiconductor layer, a second metal strip positioned adjacent to a second surface of the semiconductor layer that opposes the first surface of the semiconductor layer, and a third metal strip positioned adjacent to the second surface of the semiconductor layer. In one example, the first metal strip includes a first aperture positioned adjacent to a first active region in the semiconductor layer and second aperture positioned adjacent to a second active region in the semiconductor layer. The second metal strip overlaps the first metal strip in proximity with the first active region and not the second active region and the third metal strip is oriented substantially parallel with the second metal strip.

Abstract: A client device includes one or more processors configured to determine, from a manifest file, a plurality of types of segments included in a representation of media content, one or more functions provided by each of the types of segments, and positions of segments conforming to each of the types of segments in the representation, wherein at least one of the types of segments provides a point at which to begin retrieving data from the representation, determine, from the manifest file, a segment of the representation conforming to the type that provides the point at which to begin retrieving data from the representation, and retrieve the determined segment from the representation.

Abstract: An apparatus may include a memory configured to store video data associated with a reference layer (RL) and an enhancement layer (EL) and a processor in communication with the memory. The processor may determine whether a first enhancement layer (EL) picture associated with a first parameter set is an intra random access point (IRAP) picture, determine whether a first access unit including the EL picture immediately follows a splice point, and perform one of (1) refraining from associating the first EL picture with a second parameter set different from the first parameter set, or (2) associating the first EL picture with a second parameter set different from the first parameter set. The processor may encode or decode the video data.

Abstract: A method and a device for voltage balancing of DC bus capacitors of an NPC four-level inverter are disclosed. The method includes: determining an optimal zero-sequence voltage, determining an actual reference voltage of each phase based on the optimal zero-sequence voltage; comparing respectively three preset carrier signals with the actual reference voltage of each phase to obtain three first control signals; determining three duty-cycle adjustment values based on a voltage of the intermediate bus capacitor; adjusting correspondingly the three first control signals based the three duty-cycle adjustment values to obtain three second control signals; inputting correspondingly the three second control signals to three first switches of an upper bridge corresponding to each phase; and inputting correspondingly complementary signals of the three second control signals to three second switches of a lower bridge corresponding to each phase.

Abstract: An apparatus configured to code video information in a bitstream includes a memory and a processor in communication with the memory. The memory is configured to store video information associated with a plurality of video layers in the bitstream, the plurality of video layers in the bitstream divided into a plurality of bitstream partitions, herein each bitstream partition contains at least one of the plurality of video layers. The processor is configured to process a bitstream conformance parameter associated with a first bitstream partition of the plurality of bitstream partitions, wherein the bitstream conformance parameter is applicable to the first bitstream partition but not to another portion of the bitstream not encompassed by the first bitstream partition. The processor may encode or decode the video information in the bitstream.

Abstract: The invention provides a data processing method, comprising: a first terminal performs image acquisition on at least one photographic object entity, and encodes the image and corresponding recognition information to form video data which is sent to a second terminal; the second terminal performs data separation on the video data to obtain a video file and recognition information associated with at least one photographic object in the video file; the second terminal recognizes at least one photographic object in the video file according to the recognition information, and forms a corresponding operation area in the video file; and when the video file is played, the second terminal performs an associated operation function according to a detected operation action on a designated operation area.

Abstract: An example device for transferring media data including immersive media data includes a memory configured to store the media data, and one or more processors implemented in circuitry and configured to transfer metadata that systematically describes different formatting options for the immersive media data, process data representing one or more of the formatting options that a client device supports for rendering the immersive media data, and transfer the immersive media data having one of the formatting options that the client device supports. The device may be a server that sends the metadata and the media data to the client device, or the client device that receives the metadata and the media data. The client device may further configure a rendering environment according to the one of the formatting options to render the immersive media data.

Abstract: Techniques and systems are provided for encoding and decoding video data. For example, a method of decoding video data includes obtaining an encoded video bitstream comprising one or more layer sets and one or more additional layer sets. The encoded video bitstream includes a video parameter set defining parameters of the encoded video bitstream. The one or more layer sets are defined in a base part of the video parameter set, and the one or more additional layer sets are defined in an extension part of the video parameter set. The method further includes decoding one or more syntax elements from the video parameter set. The one or more syntax elements include rate information for the one or more layer sets defined in the base part of the video parameter set and for the one or more additional layer sets defined in the extension part of the video parameter set.

Abstract: A device for processing video data includes a memory configured to store at least a portion of a multi-layer bitstream of video data; and one or more processors configured to receive the portion of the multi-layer bitstream, the multi-layer bitstream comprising a plurality of layers, the plurality of layers comprising a non-independently decodable non-base layer (non-INBL) and an independently decodable non-base layer (INBL); receive a video parameter set (VPS) associated with the coded video data, the VPS comprising first representation format parameters; receive a sequence parameter set (SPS) associated with the INBL, the SPS comprising second representation format parameters; process the non-INBL based on the first representation format parameters; and process the INBL based on the second representation format parameters.

Abstract: In one example, a device for coding video data includes a video coder configured to code, for a bitstream, information representative of which of a plurality of video coding dimensions are enabled for the bitstream, and code values for each of the enabled video coding dimensions, without coding values for the video coding dimensions that are not enabled, in a network abstraction layer (NAL) unit header of a NAL unit comprising video data coded according to the values for each of the enabled video coding dimensions. In this manner, NAL unit headers may have variable lengths, while still providing information for scalable dimensions to which the NAL units correspond.

Abstract: A video device for processing multi-layer video data includes a data storage medium configured to store the multi-layer video data and one or more processors configured to obtain the multi-layer video data; store the multi-layer video data in a file format; store representation format information for each operation point of the multi-layer video data in an operation points information (oinf) box for the file format; and generate a file of video data formatted according to the file format.