| 摘要 |
A method, a coding format and a device is provided for switching from a first data channel to a second data channel of a digital television system. At least the second data channel is coded in a multilayer scalable video coding format comprising a base layer and at least one enhancement layer. The multilayer coding is used for switching between channels, and at least one of the enhancement layers may be adapted for providing fast switching by providing it with more random access points, e.g. more IDR-frames, than the base layer.
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