A playback device plays video streams recorded in a recording medium, in which are one or more video streams including at least one of an HDR stream whose dynamic range of luminance of video corresponds to a high dynamic range (HDR), and an SDR stream whose dynamic range of luminance of video corresponds to a standard dynamic range (SDR) narrower than HDR, and identification information indicating whether the HDR stream is included in the one or more video streams. A playback method of the playback device includes: reading the identification information from the recording medium; acquiring playback capability information indicating whether the playback device can play the HDR stream, and display capability information indicating whether a connected display device can display the HDR video; and deciding on a video stream from the one or more video streams, according to the identification information, the playback capability information, and the display capability information.

Methods, systems, and devices secure content in memory. The content includes a lock that prohibits reading the content from memory. Prior to expiration of the lock the content cannot be read from memory. However, a preview option allows at least a portion of the content to be accessed. The preview option provides a preview of the content. At expiration, the content is readable.

Provided is a process of dynamically creating a personalized workout video for a user. The process, including: obtaining a collection of workout video blocks; retrieving a user profile attribute from a user profile, the user profile attribute including a fitness goal or exercise constraint; selecting a first workout video block from the collection based on both the fitness goal or the exercise constraint and an intensity level or body-region grouping of the selected first workout video block; sending the first workout video block to a user device of the user; receiving after beginning to sending the first workout video block; selecting a second workout video block from the collection based on the feedback, the intensity of the second workout video block, and a body-region grouping of the second video block; and beginning to send the second workout video block, with one or more processors, to the user device.

A self-data-generating storage system and method for use therewith are provided. In one embodiment, a controller of the storage system is configured to receive a single video frame of video footage from a host; generate a plurality of video frames from an interpolation of the single video frame; and store the single video frame and the generated plurality of video frames in the memory. Other embodiments are provided.

A recording medium includes a video stream of a standard-luminance range and a video stream of high-luminance range, which are used selectively in accordance with a playback environment. The recording medium also includes a subtitle stream of the standard-luminance range and a subtitle stream of the high-luminance range, which are used selectively in accordance with the playback environment. A playlist file includes a management region where playback control information relating to a main stream is stored, and includes an extended region. The management region stores first playback control information specifying playing of the video stream of the high-luminance range and the subtitle stream of the high-luminance range in combination. The extended region stores second playback control information specifying playing of the video stream of the standard-luminance range and the subtitle stream of the standard-luminance range in combination.

A media file system, apparatus, computer program product and method for storing a media file in a media file system. An exemplary method includes obtaining a predetermined number of frames and determining a set of portions for storing the media file, each portion having an identifier that is indicative of a multiple of the predetermined number of frames. Further, for each portion of the set of portions, associating with the portion the segment of the media file containing the frame indicated by the identifier of the portion, and associating each of the remaining segments of the media file with a portion of the set of portions. Moreover, storing the media file in the media file system as the set of determined portions, each portion comprising its associated segments of the media file.

Methods, systems and devices for using end of sequence indications are described. An example method of video processing includes performing a conversion between a video and a bitstream of the video, wherein the bitstream includes multiple layers in multiple access units, AUs, including one or more pictures according to a format rule, wherein the format rule specifies that, responsive to an end of sequence (EOS) network abstraction layer (NAL) unit for a first layer being present in a first access unit (AU) in the bitstream, a subsequent picture of each of one or more higher layers of the first layer in an AU following the first AU in the bitstream is a coded layer video sequence start (CLVSS) picture.

A media file system, apparatus, computer program product and method for storing a media file in a media file system. An exemplary method includes obtaining a predetermined number of frames and determining a set of portions for storing the media file, each portion having an identifier that is indicative of a multiple of the predetermined number of frames. Further, for each portion of the set of portions, associating with the portion the segment of the media file containing the frame indicated by the identifier of the portion, and associating each of the remaining segments of the media file with a portion of the set of portions. Moreover, storing the media file in the media file system as the set of determined portions, each portion comprising its associated segments of the media file.

Methods, systems, and devices for picture header constraints for multi-layer coding are described. An example method of video processing includes performing a conversion between a video including one or more pictures and a bitstream of the video. The bitstream conforms to a format rule. The format rule specifies a constraint on a value of a first syntax element that specifies whether a second syntax element is present in a picture header syntax structure of a current picture. The second syntax element specifies a value of a picture order count (POC) most significant bit (MSB) cycle of the current picture.

A playback device acquires first management information that stores first playback control information and second management information that stores second playback control information. The first playback control information specifies that a video stream of a high-luminance range is to be played, and the second playback control information specifies that a video stream of a standard-luminance range is to be played. A video player acquires and plays the video stream of the high-luminance range based on the first playback control information in a case of playing the content as the high-luminance range. The video player acquires and plays the video stream of the standard-luminance range based on the second playback control information in a case of playing the content as the standard-luminance range.