Mind video model pricing calculation needs duration adjustment

A multiplayer mode for video models was recently added, but the pricing model has an oversight: minimum video duration is 4 seconds (not 1 second), making actual per-video costs $0.80 rather than the calculated $0.20. The team needs to add video duration as a metric to correct the cost calculations.

• •Multiplayer video model mode added in latest update
• •Pricing underestimates costs due to missing duration metric
• •Minimum viable video length is 4 seconds, not 1