Method for transmission of media content, executed by a content transmission device , comprising: - obtaining (S1) a media stream (V 0 ) comprising a plurality of successive frames, characterized by : - selecting (S2) one or more of said frames which meet a selection criterion, wherein the media stream comprises successive video frames, the method comprising at least one of: - selecting a video frame having a luminance below a luminance threshold, - selecting a video frame of a still scene, - selecting a video frame of a changing scene, - selecting a video frame of a scene change, and/or wherein the media stream comprises successive audio frames, the method comprising selecting an audio frame having a sound level below a sound level threshold, - determining (S2) marking data specifying the selected frames, - sending (S3) said media stream and said marking data to a plurality of content consumption devices by multicast, - buffering (S4) a portion of the media stream and the marking data and, in response to a request from another content consumption device , sending (S5) the buffered portion to said other content consumption device in unicast, to enable said other content consumption device to reduce buffering by skipping frames during playback based on the marking data. - obtaining (S1) a media stream (V 0 ) comprising a plurality of successive frames, characterized by : - selecting (S2) one or more of said frames which meet a selection criterion, wherein the media stream comprises successive video frames, the method comprising at least one of: - selecting a video frame having a luminance below a luminance threshold, - selecting a video frame of a still scene, - selecting a video frame of a changing scene, - selecting a video frame of a scene change, and/or wherein the media stream comprises successive audio frames, the method comprising selecting an audio frame having a sound level below a sound level threshold, - determining (S2) marking data specifying the selected frames, - sending (S3) said media stream and said marking data to a plurality of content consumption devices by multicast, - buffering (S4) a portion of the media stream and the marking data and, in response to a request from another content consumption device , sending (S5) the buffered portion to said other content consumption device in unicast, to enable said other content consumption device to reduce buffering by skipping frames during playback based on the marking data. - selecting a video frame having a luminance below a luminance threshold, - selecting a video frame of a still scene, - selecting a video frame of a changing scene, - selecting a video frame of a scene change, and/or - determining (S2) marking data specifying the selected frames, - sending (S3) said media stream and said marking data to a plurality of content consumption devices by multicast, - buffering (S4) a portion of the media stream and the marking data and, in response to a request from another content consumption device , sending (S5) the buffered portion to said other content consumption device in unicast, to enable said other content consumption device to reduce buffering by skipping frames during playback based on the marking data. <EOS>