In this video, the original, largely uncompressed, .mov file was 74 megabytes. With reasonable compression, you can make a much smaller file – the second .mov sample is down to 9 megabytes. The third example shows a few artifacts: the compression ‘macroblocks’ are now visible, the parrot is now blending in and out with the rack of CDs in the background (and vice versa), and the motion has become ‘steppy’.