Method and system for efficient video transcoding

Details Method and system for efficient video transcoding Method and system for efficient video transcoding

H - Electricity

04

N

H04N 7/01 (2006.01)

Patent

CA 2746719

A method and system for an efficient transcoding of a sequence of input images in a first format to a sequence of output images in a second format are described. The method utilizes the encoding block mode, the motion vectors and the residual information extracted during the decoding of the input image that are effectively reused to select an optimal transcoding block mode and to perform selective refinement of motion vectors. A corresponding system for video transcoding is also provided.

L'invention concerne un procédé et système de transcodage efficace d'une séquence d'images d'entrée dans un premier format en une séquence d'images de sortie dans un second format. Le procédé utilise le mode bloc de codage, les vecteurs de mouvement et les informations résiduelles extraites au cours du décodage de l'image d'entrée qui sont réutilisées de manière efficace pour choisir un mode bloc de transcodage optimal et pour effectuer une décomposition sélective des vecteurs de mouvement. L'invention concerne également un système correspondant de transcodage vidéo.

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