Re: 3D Stroke

You might be able to cobble together something like this, but it would be limited to one camera angle and would not be very flexible.

As mentioned above, the most flexible way to do this would be in a 3D package by UVing your artwork onto a flat surface and then run the surface through some deformers, like a flow or sine deformer.

However, that said, you could try using Bezier Warp (or Mesh Warp) on an over wide pre-composed comp with your flag artwork running through it horizontally. Place that comp in a conformed comp (NTSC for instance) and apply the Bezier Warp to it and play with the control handles.

You could link the various related tangents (With Bezier Warp) with expressions with offsets. This method would not allow orbiting but might set you in the right direction.

Hope this helps.