Synchronizing, switching and editing mpeg files

H - Electricity – 04 – N

Patent

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Details

H04N 7/12 (2006.01) G11B 27/031 (2006.01) G11B 27/10 (2006.01) H04N 5/04 (2006.01) H04N 7/24 (2006.01) H04N 7/50 (2006.01)

Patent

CA 2327620

A method and apparatus for flexibly and reliably processing one or more MPEG signals from at least one source. The method provides for synchronizing (28) decoded streams (36) to a reference clock, for playing multiple streams simultaneously or for transitioning (24) between streams in a seamless manner. The output streams can have varying formats and can include both video and audio. The structure and method further provide for the capability of skipping B frames to reach a desired reference frame quickly and to edit the MPEG streams regardless of GOP size.

L'invention concerne un appareil et un procédé pour traiter de façon souple et fiable un ou plusieurs signaux MPEG provenant d'au moins une source. Le procédé consiste à synchroniser (28) des trains de données décodées (36) avec une horloge de référence, pour exécuter simultanément plusieurs trains de données ou pour effectuer une transition sans à-coups (24) entre les trains de données. Les trains de données peuvent avoir des formats modifiables et comprendre des données vidéo tout comme des données audio. La structure et le procédé de l'invention permettent également de sauter les trames B pour atteindre rapidement une trame de référence désirée et éditer les trains de données MPEG indépendamment de la taille GOP.

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