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 17:
18. Video streaming server comprising a programmed computer or electronic circuit configured to
access slices of a video data stream into which pictures of a video are coded each of which shows a scene, wherein the pictures are spatially subdivided into tiles and within each picture tiles within the respective picture are coded independent from each other; and
render available to a client a streaming of a stream concerning a section of the scene, the stream being formatted in a file format and comprising
a set of one or more source tracks 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 on the basis of the one or more source tracks;
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, and

instructing to copy the portion to be copied into the section-specific video data stream.