Michael, thanks for your offer, I'll get in touch with you. I'm not looking to argue either. I admit I remain skeptical on the actual performance... I appreciate you sharing your tests and standing behind your what you've created. While I'm not sure your app is for me exactly, the fact that you are willing to encourage someone with as many reservations as I have test your app for free says a lot about how good an app you feel you've created. I may have to eat some humble pie in the near future... Also, thanks for being so gracious with me when it probably isn't deserved. Cheers.
Scott, I agree down-resing video can have benificial effects. RED Epic and Sony F55 test have shown that to be the case. If there's someone out there using an iPhone to capture 24fps video at a level (professional or otherwise) that down-resing for contrast or sharpness would be wanted or necessary, my opinion is that they're using the wrong capture device. Just my opinion though...
I didn't say you can't. I said you shouldn't. ;)
If Apple felt the camera was capable of capturing continuous stills at 24fps, I'm sure they'd be marketing the crap out of it.
There simply has to be software manipulation taking place to make 24fps still capture a reality. I have to assume (although I can't be sure) they've lowered the bitrate when saving RGB stills which would allow for more fps at less quality.
My point was that this app isn't creating 4K video, and, well, it isn't.
The 24fps '4K' video at 3264x2448 isn't even close to either accepted 4K or UHD resolution standard. I guess that's why they had to change the name of the app to '8xHD' instead of using 'Vizzywig 4K'.
I tend to get my back up when apps like these try to pull an end around by claiming they're capable of doing something that they actually aren't.
The app definitely does 'something' to the image coming from the sensor (which I choose to call voodoo/bullshit) that allows the iPhone's hardware to capture 24 still frames per second and 'stitch' them together to create 'video', almost certainly at the expense of image quality. Super. That's great. But it's not 4K video, not even close.
P.S. You'll need an iPhone 5s to get the 'best quality' 24fps, because it doesn't work on the 6 or 6 Plus (10fps max.). Also, while it will work at 24fps on iPhone 5 and earlier, the cameras on iPhone's prior to the 5s are much lower quality (read - crappier video/stills at lower res), so be aware of that before purchasing.
BEGIN RANT - This 'app' is a total waste of $49, let alone $1000 - it might up-res video, but let's be clear, it's not actual 4K. You just can't make something out of nothing. The iPhone has an HD (1920x1080 pixel) video camera, you simply can't make it 4K (4096x2160 pixels) or UHD (3840x2160 pixels) with software. Whatever trascoding/up-resing/pixel-doubling/tripling/quadrupling voodoo/bullshit they're using to get '4K video' is going to make it look like crap, guaranteed. Never mind that cramming enough pixels for 4K video on a sensor as tiny as most mobile devices is already a spectacularly bad idea. Apple knows this, so they concentrated on making their HD sensor as good as it can be with its larger pixels, better dynamic range and sharper/faster optics. Bottom line - you don't need 4K on your phone, it's a silly sales gimmick and a complete waste of time (and money). - END RANT