Mech Girl

Breakdown Step

1. Original character concepts

Start with one clean image for the girl and one clean image for the mech so every later step has a stable visual identity.

The first pass was done in GPT Image 2 to create a grounded protagonist image and a separate mech concept image.

These are the anchor references for identity, materials, silhouette, and tone across the whole project.

Breakdown Step

2. Reference sheet generation

Use the same PDF prompt with each original image to convert rough concept images into cleaner, more production-ready reference sheets.

The `character_reference_sheet_prompt.pdf` file was reused twice: once with the girl original and once with the mech original.

This keeps the process simple while producing more stable identity references for later video generation.

Breakdown Step

3. Scale reference

Combine the original girl and original mech references into one shared image that locks the size relationship before moving into video.

This step makes the cockpit size and overall scale easy to verify before animation.

It prevents the mech from drifting toward a toy scale or shrinking toward a companion-bot size in later shots.

Breakdown Step

4. Seedance video variations

Use the two reference sheets plus the scale image as a stable three-image input set, then generate two different 15-second variations.

Both prompts preserve the same girl identity, mech identity, and scale relationship.

The second pass exists to search for stronger action and ending options without restarting the whole asset pipeline.

Breakdown Step

5. Final CapCut assembly

Pick the strongest scenes from both Seedance results, join them in sequence, and add soundtrack to set the final emotional tone.

Scenes 1–3 were taken from the first generated video and scenes 4–5 were taken from the second generated video.

The edit was assembled in CapCut and paired with Randy Newman's You've Got a Friend in Me (From Toy Story) as the background song.