the invention concerns a receiver , and a method for channel switching at the receiver , the method comprising the steps of switching to a channel transporting a program encoded into groups of pictures , receiving the program into a first stream and a second stream , the first stream being encoded with successive first group of pictures , first gop , the second stream being encoded with successive second group of pictures , second gop , each one of the second gop corresponding to a first gop and being a subset of the first gop , each gop starting with an intra - frame picture , selecting , between the first stream and the second stream , the picture that is decoded , and displaying the picture .