iFrame video was introduced in 2009, so it obviously hasn't caught on. My Nikon P500 can shoot in 1080, 720 and iFrame, which is 960x540, so it's sort of in between SD and HD. I shot the same 7 second clip in 1080, 720 and iFrame, and surprisingly, iFrame was a larger file, and higher data rate than even 1080...1080 was 13 megs (15mbps), 720 was 8.2 megs (9.5 mbps), and iFrame was 17.7 megs (18.2 mbps). ---- Just curious if anybody has used iframe in the 'real world'? I'm thinking it might be a good "one generation" format, say a short clip of kids or dogs, uploaded directly to youtube without any editing.