A media system includes a plurality of set-top boxes coupled to a coax network and a controller. The controller displays a first passkey to a user in response to receiving a request from the user to activate playback of a media content on a particular set-top box. The set-top box receives the first passkey from the user and determines whether the user is authorized to activate playback of the media content by comparing the first passkey received from the user with a second passkey obtained from a passkey module on the set-top box. When the user is determined by the set-top box to be authorized to activate playback of the media content, the set-top box determines a radio frequency channel of the coax network according to the first passkey received from the user and begins playback of the media content received on the radio frequency channel on a display device.

A device for retrieving media includes a memory configured to store media data of a media presentation; and one or more processors implemented in circuitry and configured to: retrieve a manifest file for a media presentation indicating that container parsing of media data of a bitstream can be started at a resync point of a segment of a representation of the media presentation, the resync point being at a position other than a start of the segment and representing a point at which the container parsing of the media data of the bitstream can be started; use the manifest file to form a request to retrieve the media data of the representation starting at the resync point; send the request to initiate retrieval of the media data of the media presentation starting at the resync point; and present the retrieved media data.

A method of processing a service in a transmitter, and including generating, by a hardware processor, a first media component and a second media component for the service; generating, by the hardware processor, signaling data for the service; time interleaving, by a time interleaver, the first media component, wherein the first media component is time-interleaved by column-wise writing actual Forward Error Correction (FEC) blocks including the first media component in a Time Interleaving (TI) memory and diagonal-wise reading the first media component in the actual FEC blocks from the TI memory, wherein one or more virtual FEC blocks are skipped during the diagonal-wise reading the written first media component, and wherein a number of the one or more virtual FEC blocks is equal to a difference between a number of the actual FEC blocks and a column number of the TI memory; generating, by a signaling generator, physical layer signaling information, wherein the physical layer signaling information includes first physical layer signaling information and second physical layer signaling information, wherein the first physical layer signaling information includes information for identifying a size of the second physical layer signaling information and wherein the second physical layer signaling information includes information for obtaining the column number of the TI memory; transmitting, by an antenna, the time-interleaved first media component, the physical layer signaling information and the signaling data through a broadcast network; and transmitting, by a network interface, the second media component to a receiver through a broadband network. Further, the signaling data transmitted through the broadcast network includes first timeline information for specifying a timeline of the first media component transmitted through the broadcast network and uniform resource location information for the second media component.

A method of processing a service in a transmitter, and including generating, by a hardware processor, a first media component and a second media component for the service; generating, by the hardware processor, signaling data for the service; time interleaving, by a time interleaver, the first media component, wherein the first media component is time-interleaved by column-wise writing actual Forward Error Correction (FEC) blocks including the first media component in a Time Interleaving (TI) memory and diagonal-wise reading the first media component in the actual FEC blocks from the TI memory, wherein one or more virtual FEC blocks are skipped during the diagonal-wise reading the written first media component, and wherein a number of the one or more virtual FEC blocks is equal to a difference between a number of the actual FEC blocks and a column number of the TI memory; generating, by a signaling generator, physical layer signaling information, wherein the physical layer signaling information includes first physical layer signaling information and second physical layer signaling information, wherein the first physical layer signaling information includes information for identifying a size of the second physical layer signaling information and wherein the second physical layer signaling information includes information for obtaining the column number of the TI memory; transmitting, by an antenna, the time-interleaved first media component, the physical layer signaling information and the signaling data through a broadcast network; and transmitting, by a network interface, the second media component to a receiver through a broadband network. Further, the signaling data transmitted through the broadcast network includes first timeline information for specifying a timeline of the first media component transmitted through the broadcast network and uniform resource location information for the second media component.

An example device for processing media data is configured to parse a bitstream including the media data, the bitstream being formatted according to Common Media Application Format (CMAF), detect, during the parsing, a file type (FTYP) value for a CMAF track file of the bitstream, determine that a CMAF header of the CMAF track file starts with the FTYP value, and process one or more CMAF fragments following the CMAF header of the CMAF track file. The device may additionally be configured to detect one or more segment type (STYP) values in the bitstream, determine that each of the one or more STYP values corresponds to a start of a respective one of the CMAF fragments, and process each of the CMAF fragments starting from the corresponding STYP value.

The techniques described herein relate to methods, apparatus, and computer readable media configured to access multimedia data comprising a hierarchical track structure comprising at least a first track at a first level of the hierarchical track structure comprising first media data, wherein the first media data comprises a first sequence of video media units, and a second track at a second level in the hierarchical track structure different than the first level of the first track, the second track comprising metadata specifying a re-timing derivation operation. Output video media units are generated according to the second track, comprising performing the re-timing derivation operation on the first sequence of video media units to modify a timing of the first sequence of video media units by removing one or more video media units associated with the re-timing derivation operation and/or shifting timing information of the first sequence of video media units.

Techniques are disclosed for organizing and distributing artifacts generated by processing pipelines for the training or application of machine learning models. An application may subscribe to a playlist of a stream of events and locally store a copy of the playlist. The subscriber may merge locally stored and/or selected events to generate a merged stream of events. The subscriber may then execute the merged event stream including the newly added instance of the event.

Techniques are disclosed for organizing and distributing artifacts generated by processing pipelines for the training or application of machine learning models. An application may subscribe to a playlist of a stream of events and locally store a copy of the playlist. The subscriber may merge locally stored and/or selected events to generate a merged stream of events. The subscriber may then execute the merged event stream including the newly added instance of the event.

Example video data transmission methods and apparatus are described. One example method includes receiving a plurality of data packets corresponding to a plurality of video frames by a network device from a server. The network device determines that a transmission phase of one or more data packets corresponding to each video frame in the plurality of video frames, and determines a corresponding priority based on the transmission phase of the one or more data packets corresponding to each video frame. The network device sends, based on the priority of the one or more data packets corresponding to each video frame, the one or more data packets corresponding to each video frame to a terminal device corresponding to each video frame.

Example video data transmission methods and apparatus are described. One example method includes receiving a plurality of data packets corresponding to a plurality of video frames by a network device from a server. The network device determines that a transmission phase of one or more data packets corresponding to each video frame in the plurality of video frames, and determines a corresponding priority based on the transmission phase of the one or more data packets corresponding to each video frame. The network device sends, based on the priority of the one or more data packets corresponding to each video frame, the one or more data packets corresponding to each video frame to a terminal device corresponding to each video frame.