The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 29, 2025
Filed:
Sep. 29, 2022
Fraunhofer-gesellschaft Zur Förderung Der Angewandten Forschung E.v., Munich, DE;
Yago Sánchez De La Fuente, Berlin, DE;
Dimitri Podborski, Berlin, DE;
Karsten Grueneberg, Berlin, DE;
Cornelius Hellge, Berlin, DE;
Thomas Schierl, Berlin, DE;
Robert Skupin, Berlin, DE;
Thomas Wiegand, Berlin, DE;
Abstract
File format concepts for video files are described. It is proposed to that descriptive data of a file indicates whether a parameter set for a track of a file is forwarded when jointly decoding a sub-stream of the track and a further track, and/or that a file includes, for a sub-stream of a video stream signaled in the file, an alternative parameter set to a parameter set for fully decoding the track, the alternative parameter set being for decoding the sub-stream, so as to allow for switching between multiple tracks of a file, and/or that step-wise stream access pictures of a track of a file are marked as stream access point pictures for accessing the track, and/or that a temporal length within which a decoder refresh in case of a joint decoding of sub-streams distributed over multiple tracks is indicated in a file, and/or that a file provides information from which it is derivable whether a pixel aspect ratio varies.