Port a Remotion or HyperFrames video into vos

A port is a REWRITE into a vos program whose content is data. The source keeps its look; what changes is that every word, colour and timing a person would change becomes a value in data with a knob over it, so the next change is a data edit (in the studio, or vos push of a patched value), never another rewrite.

Two ways to get this wrong, both seen in real ports:

• One canvas black box. Painting the whole picture in one Canvas2D function on a fullscreen quad matches the frames and leaves the studio nothing to edit: every literal in the source becomes a literal in code.
• A tabulated page. Sampling the rendered DOM into CSS keyframes is faithful and dead: thousands of sampled values, not one knob.