| abstract |
The invention relates to a method for scheduling data units (51) of a scalable video stream at least in time and quantization dimensions, obtained by hierarchical coding, comprising a scheduling step delivering an ordered list of said data units comprising, for a set of data units to be ordered, the following steps: - introducing into said ordered list of data units of the quantization base layer; - association (53), to each data unit of the quantization base layer; a quantization refinement layer, an efficiency information representative of an increase in quality and / or a rate increase provided by said data unit; scheduling (54) said data layer data units; quantization refinement according to said effectiveness information and a presence criterion, indicating that said reference data units of the data unit es considered are already present in said ordered list. |