Konzept für Bild-/videodatenströme für Effiziente Reduzierbarkeit oder Effizienten Direktzugriff
Anmelder: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. 🇩🇪
Details
- Veröffentlichungs-Nr.
- EP4712473
- Anmeldetag
- 8. Februar 2017
- Veröffentlichung
- 18. März 2026
- Rechtsraum
- EP
- IPC
- H04N19/174
Abstract
A video data stream is rendered reducible in a manner so that the reduction leads to a restriction of pictures of the reduced video data stream to merely a predetermined subarea of the pictures of the original video data stream and in a manner so that transcoding, such as re-quantization, may be avoided and a conformance of the reduced video data stream relative to the codec underlying the original video data stream be maintained. This is achieved by providing the video data stream with information comprising an indication of the predetermined subarea and replacement indices for redirecting the indices comprised by the payload portion so as to refer to, and/or replacement parameters for adjusting the first set of coding parameter settings so as to result in, a second set of coding parameter settings. A transmission of picture content is rendered more efficient in that the picture content does not need to be shaped or ordered in a predetermined manner. Similar procedure may applied to supplemental enhancement information. Adjustment of the parameters and/or supplement enhancement information of an already reduced data stream is also described. In accordance with a further aspect, the negative effects of bitrate peaks in a video data stream caused by random access points are reduced by providing the video data stream with two sets of random access points: a first set of one or more pictures are encoded into the video data stream with suspending temporal prediction at least within a first picture subarea so as to form a set of a set of one or more first random access points and a second set of one or more pictures is encoded into the video data stream with suspending temporal prediction within a second picture subarea different from the first picture subarea so as to form a set of one or more second random access points.
Anmelder
- Firma
- Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- Land
- 🇩🇪 Deutschland
Deutsche gemeinnützige Forschungsorganisation mit Sitz in München. Betreibt anwendungsorientierte Forschung in Technik und Naturwissenschaften über zahlreiche Institute für Industrie und Gesellschaft.
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Schoppe, Zimmermann, Stöckeler, Zinkler, Schenk & Partner mbB berät von München aus Unternehmen und Forschungseinrichtungen aus aller Welt, mit technischem Schwerpunkt auf Audio- und Videokodierung, Mobilfunk, künstlicher Intelligenz und Halbleitertechnik.