Patent ID: 11917220
Assignee: FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 34:
35. Client configured to retrieve from a video streaming server a video concerning a section of a scene, the client comprising a programmed computer or electronic circuit configured to
retrieve from the video streaming server a stream formatted in a file format and comprising
a set of one or more source tracks incorporating slices the slices in the set of one or more source tracks forming a subset of slices of a video data stream into which pictures of a video are coded each which shows the scene, wherein the pictures are spatially subdivided into tiles and within each picture tiles within the respective picture are coded independent from each other, the subset of slices incorporating the slices into which tiles within the section are encoded; and
a set of one or more gathering tracks comprising construction instructions indicating a synthesis of a section-specific video data stream into which pictures showing the scene's section are encoded;

synthesize the section-specific video data stream according to construction instructions in the set of one or more gathering tracks on the basis of the one or more source tracks, and
subjecting the section-specific video data stream to decoding by a video decoder, wherein the construction instructions comprise
a copying instruction
comprising
a constructor tag,
an index to a reference track of the set of one or more source tracks,
an indicator of the sample or picture or access unit of the reference track which the copying instruction refers to, and
an indication of a portion to be copied out of the sample or picture or access unit of the reference track by data offset and data length,

the client configured to, according to the copying instruction, copy the portion to be copied into the section-specific video data stream.