render-whiteboard-explainer

The renderer for the whiteboard video ad format: a voice explains one idea while a board fills up in marker, the way a graphic recorder works a room. Every mark lands on the word it belongs to, and the board is wiped and reused between sections.

Siblings in the chat-UI family are render-imessage-chat and render-chatgpt-chat, where a screen is the creative. Reach for this one when the creative is someone explaining a thing by drawing it.

The three decisions that make this format work

The board is a photograph. A drawn board reads as a drawn board, and a plain white frame reads as a sketch film. Both were built and both were rejected. One generated still of a real blank whiteboard in a real room is the plate, and the ink is multiplied onto it so the surface sheen and the window light come through the strokes rather than sitting on top as flat black. The handheld drift is generated over both layers at once, so nothing can slide against anything.