1. A process comprising receiving a first representation of a video stream that includes video frames, the representation expressing the video frames at a relatively high pixel resolution, detecting that at least one of the video frames includes a region of interest, providing to a video playing device a second representation of the video stream that expresses the video frames at a relatively low pixel resolution, and including with the second representation, additional information that represents at least a portion of the region of interest at a resolution level that is higher than the relatively low pixel resolution.