Aspects of the disclosure provide a method and an apparatus including processing circuitry for video decoding. The processing circuitry is configured to decode coding information for a current block. The coding information can indicate that the current block is coded in a string copy mode. The processing circuitry is configured to determine a string vector (SV) and a string length of a current string in the current block based on the coding information. The string length can be N3 times L where N3 and L are positive integers, and L is larger than 1. The processing circuitry is configured to reconstruct the current string based on the SV and the string length of the current string. In an example, the current block is a luma block and L is 4.

Aspects of the disclosure provide a method and an apparatus including processing circuitry for video decoding. The processing circuitry is configured to decode coding information for a current block. The coding information can indicate that the current block is coded in a string copy mode. The processing circuitry is configured to determine a string vector (SV) and a string length of a current string in the current block based on the coding information. The string length can be N3 times L where N3 and L are positive integers, and L is larger than 1. The processing circuitry is configured to reconstruct the current string based on the SV and the string length of the current string. In an example, the current block is a luma block and L is 4.

The present disclosure generally relates to a method and device of encoding a color picture having color components (Ec) comprising obtaining (11) a luminance component (L) and two chrominance components (C1, C2) from the color picture to be encoded. The method for encoding a color picture having color components comprising obtaining at least one chrominance component from the color picture to be encoded, the method further comprises: —determining a first factor based on the value of each pixel (i) of said luminance component; —obtaining at least one final chrominance component by scaling said at least one chrominance component by said first factor; and—encoding (13) said at least one final chrominance component.

A method is disclosed that comprises mapping a high-dynamic range luminance picture to a standard-dynamic range luminance picture based on a backlight value Ba.sub.c associated with the high-dynamic range luminance picture.

Downsampled video content is generated in a subsampling color space from linearized video content in the subsampling color space. The linearized video content represents a first spatial dimension, whereas the downsampled video content represents a second spatial dimension lower than the first spatial dimension. Opponent channel data is derived in a transmission color space from the downsampled video content. Output video content is generated from luminance data in the linearized video content and the opponent channel data in the transmission color space. The output video content may be decoded by a downstream recipient device to generate video content in an output color space.

The present invention relates to a device and method for transmitting and receiving a broadcasting signal including a subtitle service. An embodiment of the present invention provides a broadcasting signal transmission method comprising the steps of: generating a broadcasting signal including video data and subtitle data; and transmitting the generated broadcasting signal. According to an embodiment of the present invention, a transmission stream providing a digital broadcasting subtitle service using XML subtitles can be transmitted.

Approaches for processing video in a smart small form-factor pluggable (SFP) transceiver. The smart SFP transceiver may dynamically select, from a plurality of codecs available to the smart SFP transceiver, an appropriate codec for use in processing the video prior to the video being transmitted over a link. The selection of the codec may be based, at least in part, on assessed environmental attributes. The smart SFP transceiver may then use the codec selected by the smart SFP transceiver to process the video, e.g., the video may be encoded, compressed, or timing information generated.

Reception-side processing performed in a case where transmission of standard dynamic range video data and transmission of high dynamic range video data coexist in a time sequence is simplified.

SDR transmission video data is converted into SDR transmission video data through dynamic range conversion. The SDR transmission video data is the one obtained by performing, on SDR video data, photoelectric conversion in accordance with an SDR photoelectric conversion characteristic. In this case, the conversion is performed on the basis of conversion information for converting a value of conversion data in accordance with the SDR photoelectric conversion characteristic into a value of conversion data in accordance with an HDR photoelectric conversion characteristic. A video stream is obtained by performing encoding processing on HDR transmission video data. A container having a predetermined format and including this video stream is transmitted.

Systems and methods of filtering video data using a plurality of filters are disclosed. In an embodiment, a method includes receiving and decoding a plurality of filters embedded in a video data bitstream at a video decoder. The method includes selecting, based on information included in the video data bitstream, a particular filter of the plurality of filters. The method further includes applying the particular filter to at least a portion of decoded video data of the video data bitstream to produce filtered decoded video data.

Systems and methods of filtering video data using a plurality of filters are disclosed. In an embodiment, a method includes receiving and decoding a plurality of filters embedded in a video data bitstream at a video decoder. The method includes selecting, based on information included in the video data bitstream, a particular filter of the plurality of filters. The method further includes applying the particular filter to at least a portion of decoded video data of the video data bitstream to produce filtered decoded video data.