METHOD AND APPARATUS FOR ADAPTIVE TRANSCODING OF MULTIMEDIA STREAM

摘要

A method of streaming an output content stream adaptively transcoded from a corresponding input content stream includes offering, to a client device, a number of alternative versions of the output content stream, for selection by the client device, and dividing the input content stream into two or more segments. Prior to the offering step at least a first segment of the input content stream is transcoded into at least one corresponding segment of an output content stream corresponding to at least one version from the number of alternative versions offered to the client device. Upon receiving a request from the client device for a selected version of the output content stream, streaming is begun with using a first one of the at least one corresponding segments of an output content stream corresponding to at least one version from the number of alternative versions offered to the client device that had been transcoded and stored prior to offering. Transcoding parameters are extracted from the request, for controlling the transcoding of a subsequent segment of the input content stream into the version selected by the client device, and the subsequent segment transcoded into the requested version is streamed to the client.

主权项

1. Method of streaming an output content stream adaptively transcoded from a corresponding input content stream, the method including the steps of:
dividing the input content stream into two or more chunks; transcoding and storing at least a first chunk of the input content stream into at least one corresponding chunk of an output content stream corresponding to at least one version from a number of alternative versions offered to a client device; receiving a request, from the client device, for streaming a chunk of a selected version, from the number of alternative versions, of the output content stream; beginning streaming using a first one of the at least one corresponding chunk of an output content stream corresponding to at least one version from the number of alternative versions offered to the client device that had been transcoded; extracting transcoding parameters from the request, for controlling the transcoding of a subsequent chunk of the input content stream into the version selected by the client device; and streaming the subsequent chunk transcoded into the requested version.