# Doorway push-in: stay within the visible space

Practice a short forward camera move from a doorway while retaining both jambs and avoiding invented adjoining rooms.

These original SVG/PNG teaching inputs were authored for a method exercise. No video model was run and no generated result is included. PNG files are raster counterparts of the editable SVG sources.

## Input responsibilities

Upload only the clean first frame; diagram is for review.

Use the current controls at /generator/image-to-video; check actual accepted inputs and settings before submitting.

## Goal

Move slightly closer in the existing viewing direction, stopping outside the threshold while the doorway and visible room anchors remain available for comparison. This is a bounded atmosphere shot, not a property walkthrough.

## Preparation

- Use the supplied doorway illustration or an authorized entrance photo that shows both jambs, the lintel and enough of the room beyond to compare fixed features.
- Choose visible room anchors such as the window and sofa. A dark doorway with no interior information is not a source for a detailed new room.
- Keep the requested move small enough to preserve the complete inner doorway boundary. Do not combine it with a turn, pan toward a hidden wall or a walk into another space.
- Check the closer-composition diagram before drafting. It expresses a limit for review, not an additional image input or an exact camera path.

## Copyable brief

```text
Use the uploaded doorway view as the first frame. Move the camera forward only a small distance along its current viewing direction and stop before crossing the doorway threshold. Retain the left jamb, right jamb and lintel inside the frame, together with the currently visible window and sofa. Keep the doorway, walls, floor and furniture in their existing relationships. Do not turn into a corridor, pass through the opening, reveal a new room or add unseen furnishings. End on a slightly closer view of the same visible space, with a quiet steady pause.
```

## Procedure

1. **Define the visible boundary** — Identify the inner edges of both jambs and the lintel. These are the stop-condition references, not just decoration around the room.

2. **Choose an ending that keeps the boundary** — Use a slightly closer composition that still contains the doorway and the window-sofa relationship. If the desired ending removes the jambs, shorten the move before generating.

3. **Inspect the moving interval** — Watch for the camera crossing the threshold, wall edges sliding apart or the sofa passing through a table. A plausible final crop can hide a broken spatial transition.

4. **Audit anything newly revealed** — List surfaces or objects that become visible. Keep the shot within information already supplied; if a real adjoining space must be shown, obtain its actual footage or images as a different task.

## Observation record

Use checks.csv to record pass/fail/not-observable and the earliest affected time. Do not pre-fill a pass: there is no generated clip in this package.

- Both jambs and the lintel remain inside the frame throughout.
- The camera moves only forward without a side turn or orbit.
- The viewpoint stops outside the doorway threshold.
- The visible window and sofa maintain their spatial relationship.
- Walls and floor junctions remain connected without stretching.
- No new corridor, adjoining room or unrecorded furniture appears.
- The ending is slightly closer and settles on the same visible space.

## Revise one variable

**The camera enters a new room**: Reduce only the forward move and restate the retained jambs as the ending limit. Keep the original view instead of describing invented room contents.

**A jamb disappears offscreen**: Shorten only the ending crop until both jambs remain visible. Recheck the full move, since a late crop can remove the reference unexpectedly.

**The room expands behind the door**: Keep only the original visible anchors and remove expansive phrases such as a full tour. If the input is too dark to support the requested view, replace it with a clearer actual entrance image.

## Ending

Finish outside the threshold with the same room in view. Save the retained-boundary check; do not describe newly generated surfaces as verified parts of a real property.

## Evidence boundary

Historical parent queries: “minimax h3 camera commands”, “minimax h3 image to video”. Exact long-tail demand is unmeasured. Source: docs/research/pseo-keyword-gap-2026-10-05/evidence/bing-live-keywords.csv. Existing broad tutorial: /blog/real-estate-walkthrough-prompts. The owner explains general limits of room photos; this download supplies a specific doorway boundary, permitted closer crop and no-new-room acceptance sheet.