History. 640×480 is the VGA standard which is the same size as the evolved later standard of NTSC of 720×480. It ends up as 4:3 aspect ratio both ways because 640×480 really is 4:3 on a computer monitor with square pixels (ignoring wide screen monitors) it stays 4:3. 720×480 is not mathematically 4:3 but it ends up 4:3 on a CRT TV since the pixels are non-square (slightly taller than wide). LCD TV’s will blow this out of the water, of course.
Bones are meant for characters by default so that many bones will be tail-ish or snakey. You’d want the bones to be a lot stiffer than that, either with stiffness or constraints, maybe spline IK would be better. Cineversity has a free tutorial on spline IK – it assumes you know how to set it up but the possibilities are obvious.
Start with your bones (but not the goal or effector) – the simple recipe
-Fix the bones
-then set up the IK chain
notice the goal is a child of the root bone but the other bones are not a child of the goal
click on the texture tag set the Projection to something other than UVW – (Cylindrical?) and use the Texture Tool and rotate the texture or if this is an image you could also rotate the image in PShop (or whatever) before import
the spline deformer – uses two splines an original on the surface and a modifying spline you move to deform the object. A crude example – the modifying spline is only rotated it could be better with PLA level control of the spline.
or bones, or just convert to polys and use a soft selection with the move tool.
check out Tim Clapham,s site – in his downloads section here https://www.hypa.tv/tims/download.html he has Clothilde simple dynamics with a downloadable example – 4 or 5 down on the right side. It’s pretty easy really just set stiffness fairly high over 100% and make sure Flexion is close to 100%. In spite of it’s name Flexion acts like a form of stiffness – side to side – and the higher the number the less it wants to flex.
in the Knife tool’s Options set the number of Cuts to higher than one then set the distance between cuts with Spacing or check off Slice and the number of Cuts is evenly spaced over the width/height of the object