High Res Video

hi res still image content is always slow to load so it doesnt really matter what you use,

dont go any bigger than 2048x2048.
And it will take up to a second to load
photoshop, tiff jpeg files are ok.

the larger file size you create the slower they to load.

So jpeg files compressed between 50% and 75% are normally the fastest types of still image files to use?

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For higher resolution movies you will have to use photojpeg or mjpeg between 50% and 60%.
Any higher than this and the files get very slow.

There are reports of the use of what is called 720p and 1080p on this site.
720p is 1280x720, p means progressive scan.
1080p is 1920x1080, p means progressive scan.
These 2 'standard' hi-def video formats being used.

What this means in a digital video system like this isnt so useful and i can support any size in any aspect ratio up to 2048x2048 - in theory.
In practise it stops being useable before that.
But computers may be fast enough some day, and output devices are increasing in resolution.