AUDIOVISUAL CONTENT ITEM DATA STREAMS

摘要

A transmitting apparatus generates an audiovisual content item data stream (e.g. transport stream) comprising a plurality of individual audiovisual data streams with audiovisual components for the content item. A generator (301-307) generates a first stream comprising both mandatory audio data and replaceable audio data for the audio representation where the replaceable audio data being data can be replaced by alternative audio data. A combiner (309) includes the resulting stream into the content item data stream. A receiving apparatus includes an extractor (403) which extracts the mandatory audio data from the received stream. A replacer (415) may replace the replaceable audio data by alternative audio data and an output (415) can generate an audio signal from the mandatory and alternative audio data. The approach may specifically provide an improved and more flexible data stream for audiovisual content.

主权项

1. A method of generating an audiovisual content item data stream comprising a plurality of individual audiovisual data streams, the plurality of individual audiovisual data streams comprising audiovisual components for an audiovisual content item; each audiovisual data stream comprising encoded data representing at least one audiovisual component and synchronization data;
the method comprising: generating a first audiovisual data stream comprising first audio data for an audio representation for the audiovisual content item, the first audio data comprising mandatory audio data for the audio representation and replaceable audio data for the audio representation, the replaceable audio data being data replaceable by alternative audio data; and including the first audiovisual data stream in the audiovisual content item data stream.