Orange

Harmonic, Inc.

Bihong Huang

Felix Henry

Xavier Ducloux

Khaled Jerbi

Darya Khaustova

Approaches for generating dynamic over-the-top (OTT) adjustable bit rate (ABR) representations of a video with a variable resolution and/or frame rate using on-the-fly (OTF) transcoding and assistance metadata. At an encoder located at a head-end, the encoder encodes a video stream at an initial bit rate and produces optimum representation (OpRep) metadata, which describes an optimum presentation for the video stream for each of a plurality of bit rates or the minimum bitrate below which a presentation becomes sub-optimal. The head-end transmits the encoded video stream and the OpRep metadata to a transcoder of a Content Delivery Network (CDN). The transcoder at the CDN uses the OpRep metadata to dynamically transcode the video stream in a preferred picture resolution and a preferred frame rate at a different bit rate than the initial bit rate using the OpRep metadata.

Assistance metadata for production of dynamic Over-The-Top (OTT) adjustable bit rate (ABR) representations using On-The-Fly (OTF) transcoding

A method for encoding at least one image divided into blocks. The method implements, for a current block to be encoded: determining a first prediction type for the current block; determining a prediction procedure associated with the first prediction type; obtaining a predictor block on the basis of the determined prediction procedure; and calculating a residual block that represents the difference between the predictor block obtained and the current block. The method also includes: selecting a prediction procedure from among a plurality of prediction procedures of a second type, different from the first type; and encoding the residual block calculated by using an encoding parameter determined on the basis of the selected prediction procedure.

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Rennes, France

Bihong Huang