Sanyo iFrame vs 1080p

Question

None of the sites I look to for cam data have updated to include the FH1a or the HD2000a (they only refer to the pre-a versions) so I've recorded a 16 second clip with iFrame and 1080p and have them available for download for 5 days (or until bandwidth gives out). They're over 40 megs each (yeah, both of them are).
iFrame
http://files.me.com/makentosh/nk0e0u.mov
1080p (60fps)
http://files.me.com/makentosh/of0hf5.mov
The FIRST thing you're likely to notice is that the 1080p file is actually smaller than the 540p one. Also, I trimmed both of these using QuickTime X which saved them as .mov. They may work happily with iMovie, OR they may force the creation of the AIC converted file. I can reup as .mp4's if anyone wants to see that.
Does anyone know what's "special" about iFrame? There's been discussion that it's an intraframe codec, but can you tell from looking at the file?

Answer 1

Other than trimming to make sure they're both the same time length to get a better feel of the relative file sizes, I've not performed any other editing. All of Samsung's many modes shot as mpeg4 video (which is another thing I like about this cam). I'd thought that anything that's not iFrame would need to be converted to AIC. Can you tell if iMovie's representation of the iFrame content (internally) is any different from the 1080p? I haven't done that level of investigation myself as I'm not familiar with how iMovie stores files, but now's a good time to learn!
I didn't do import tests with this video, but with others I thought I did note a slightly longer import time with the 1080p, but those clips weren't as controlled as these. I'll try again.
I did notice that the updated "a" version of this camera doesn't include the "Video stabilization limitation" under Additional Compatibility Information on the iMovie compatibility page
http://support.apple.com/kb/HT3290
This leads me to think that they're doing some kind of shenanigans with the content so that it's less affected by motion. I shot a really edge case video (monitor, in the dark, twisting the camera like a screwdriver) and I could just discern some "jello-ness". My normal video appears to stabilize quite well.
I'd like to see a review versus the FH1. From the reviews for that camera, it does appear they've made other minor changes, not just a new image size (starts faster, interface changed, etc.)