Add support for other image formats than highest resolution

[ultramango]

Add smaller image formats produced by gen1 and gen2 cameras.

[Skygaze]

Attached is the one for gear 360 (2017) 2560x1280. Being new to this, I only just discovered how to change my video size. Oh well. At any rate, I discovered that as long as the video is reduced equally horizontally and vertically (which it pretty much has to!), then the pto numbers that deal with size/location can be all be reduced by the same factor and the result is very, very close.

Regards, Alister. gear360sm-r210_vid.pto.log