Aspects of the disclosure provide methods, apparatuses, and non-transitory computer-readable mediums for receiving media data of a session. One apparatus includes processing circuitry that receives a media presentation description (MPD) file and one or more session-based description (SBD) files. The MPD file includes one or more essential property descriptors for session-based dynamic adaptive streaming over hypertext transfer protocol (DASH). Each of the one or more essential property descriptors for session-based DASH is associated with a different SBD file in the one or more SBD files. The processing circuitry determines, for a period in the MPD file, whether the period has a supplemental property descriptor for session-based DASH. The processing circuitry applies all of the one or more SBD files to the period in response to the period not having any supplemental property descriptor for session-based DASH.

A media content processing device may decode visual volumetric content based on one or more messages, which may indicate which attribute sub-bitstream of one or more attribute sub-bitstreams indicated in a parameter set is active, The parameter set may include a visual volumetric video-based parameter set. The message indicating one or more active attribute sub-bitstreams may be received by the decoder, A decoder may perform decoding, such as determining which attribute sub-bitstream to use for decoding visual media content, based on the one or more messages, The one or more messages may be generated and sent to a decoder, for example, to indicate the deactivation of the one or more attribute sub-bitstreams. The decoder may determine an inactive attribute sub-bitstream and skip the inactive attribute sub-bitstream for decoding the visual media content based on the one or more messages.

For example, an apparatus may include a video encoder configured to encode video data into a parallel plurality of encoded video streams, the parallel plurality of encoded video streams including the video data encoded according to a respective plurality of different video bitrates; a selector configured to select, based on one or more parameters corresponding to a condition of a wireless communication link, a selected encoded video stream from the parallel plurality of encoded video streams; and a radio to transmit the selected encoded video stream over the wireless communication link.

A split architecture for encoding a video stream. A source encoder may encode a video content stream to obtain an encoded bitstream and a side information stream. The side information stream includes information characterizing rate and/or distortion estimation functions per block of the video content stream. Also, a different set of estimation functions may be included per coding mode. The encoded bitstream and side information stream may be received by a video transcoder, which transcodes the encoded bitstream to a client-requested picture resolution, according to a client-requested video format and bit rate. The side information stream allows the transcoder to efficiently and compactly perform rate control for its output bitstream, which is transmitted to the client device. This split architecture may be especially useful to operators of content delivery networks.

A media asset may include date-related information. When viewed out of context it may be unclear what date is referenced by the date-related information. The media asset may be parsed to identify the date-related information within the media asset. The media asset may be analyzed to determine the context for the date related information. An absolute date may be determined based on this context and the date-related information and provided to the user with the media asset.

When data is to be transmitted, the amount of data regarding the attribute of the data is reduced. Upon a connection with a server apparatus being established, a requesting unit transmits a request that includes attribute information indicating the attribute of a data group, to the server apparatus via the connection. An acquisition unit acquires data. An addition unit adds, to unit data that includes the acquired data, an identifier that identifies the data group to which the unit data belongs, and that is associated with the connection. A transmission unit that transmits the unit data to which the identifier has been added, to the server apparatus via the connection.

A method comprising: authoring a plurality of sets of media tracks comprising at least a first set of media tracks and a second set of media tracks into a media file format, wherein a subset of tracks of the first set comprises alternate data for each other and a subset of tracks of the second set comprises alternate data for each other; and including, in or along a bitstream comprising a media file including or inferring said media tracks, an indication that said subset of tracks of the first set are alternatives to each other and said subset of tracks of the second set are alternatives to each other upon playback of the media tracks.

A method includes: receiving a script configured to modify the audio-video file; calculating a performance metric based on execution of the script on a set of test files; classifying the script as performant based on the performance metric; defining a metadata store associated with the script and the audio-video file; receiving a playback request specifying a rendition of the audio-video file from a computational device; in response to receiving the playback request: accessing a set of data inputs from the metadata store; executing the script on a frame of the audio-video file based on the set of data inputs to generate a modified frame of the audio-video file; transcoding the modified frame of the audio-video file into the rendition to generate an output frame of the audio-video file; and transmitting the output frame of the audio-video file to the computational device for playback at the computational device.

Methods, systems, and media for presenting media content items belonging to a media content group are provided. In some embodiments, the method comprises: retrieving metadata associated with video content segments, wherein the metadata includes user metadata, description metadata, and time metadata; generating subsets of video content segments from the video content segments based on the user metadata, wherein each of the subsets of video content segments is grouped into media content groups by: normalizing the description metadata; determining a similarity score between the normalized description metadata for a first video content segment and a second video content segment in the subset of video content segments; and determining whether to place the each of the first and second video content segments into a media content group based on the similarity score; arranging the video content segments within each of the media content groups based on time metadata; and causing at least one of the arranged media content groups to be presented in the video window in response to receiving a request for a video content item.

There are provided a device and a method for generating timed media data, the timed media data comprising samples, the method comprising: obtaining samples of the time media data; creating tracks each comprising at least one of the obtained samples; and generating a presentation file comprising descriptive metadata associated with the created tracks, wherein the descriptive metadata comprise at least one track group box describing at least one group of created tracks, all the tracks belonging to a same group sharing properties, wherein a list of existing groups of tracks is declared in one single location in the presentation file, and wherein the properties shared by the tracks of a group of the list are declared at the same single location in the presentation file.