Originally Posted by AppleInsider
Digital camcorders began recording in MJPEG (Motion JPEG, a series of still photo captures) before moving to the better compression of the popular DV format. While DV recording allowed for high quality capture, it wasn't optimally designed for direct editing in QuickTime; it uses non-square pixels and is oriented toward TV resolutions and aspect ratios.
What camcorder recorded mjpeg before DV?
Only digital camcorder format before DV was digibeta.
What does it matter that QT was not "optimally designed" for DV?
Non-sq video has been edited with QT over a decade without any problem.
Codec does not even have to know video's AR.
Any real info about iFrame?
Is it i-frame only?
All I know is that iFrame has pretty good SD resolution with square pixels, which is quite logical today, when all displays use square pixels.
Small consumer camdorder's lens can't resolve 1080p anyway, so why waste storage?