Match reference camera, swap materials

Match the camera of the reference video exactly: same opening framing, same angle, same height, same distance, same rotation, same speed, same duration.
Do not change the shot in any way. Keep the citadel and the two army formations in the same screen positions. 
Only change the materials: real weathered limestone for the city, real steel armour for the near army, real hide and iron for the far army, real grass and mud for the ground. 
Overcast daylight. No interface, no cursor, no text. No studs, seams or plastic.

Model

MiniMax

Workflow

video to video

Duration

13s

Aspect ratio

16:9

Camera

same angle, same rotation, same speed

Style

realistic, overcast daylight

Original post

Once you're in Minimax H3, feed it the reference video and write the prompt What's worked best for me is doing it in several passes rather than asking for everything at once. So repeat it as many times as you need until it's just how you like it : "Match the camera of the reference video exactly: same opening framing, same angle, same height, same distance, same rotation, same speed, same duration. Do not change the shot in any way. Keep the citadel and the two army formations in the same screen positions. Only change the materials: real weathered limestone for the city, real steel armour for the near army, real hide and iron for the far army, real grass and mud for the ground. Overcast daylight. No interface, no cursor, no text. No studs, seams or plastic."