Flexible Sub-Stream Referencing Within a Transport Data Stream

A representation of a video sequence having a first data stream comprising first data portions, the first data portions comprising first timing information and a second data stream, the second data stream comprising a second data portion having second timing information, may be derived. Association information is associated to a second data portion of the second data stream, the association information indicating a predetermined first dat portion of the first data stream. A transport stream comprising the first and the second data stream as the representation of the video sequence is generated.