google-flow

Use veo-3.1-lite for prompt testing and pre-vis at 2 credits per second, veo-3.1-fast for social and high-volume work at 5 credits per second, and veo-3.1-quality for final 4K mastering at 10 credits per second. Always validate prompts on Lite before rendering on Quality.

Generate an 8-angle canonical character rig with nano-banana-pro, then pass the character_rig_id into every shot. Also feed the final frame of each shot as the anchor_frame for the next shot and lock the seed across the sequence.

The composite score weights temporal stability and anatomy at 25% each, semantic adherence at 20%, and artifact suppression and physics at 15% each. Scores of 85 or above pass, 70-84 trigger targeted remediation, and below 70 requires rejection and re-rendering.

Flickering is a Class B temporal defect fixed with optical flow de-flickering via flow_upscale_media and slower camera moves. Melting anatomy is a Class A defect fixed by isolating complex gestures into separate close-up shots and injecting negative prompt tokens.

The off-peak window runs from 02:00 to 08:00 UTC and provides 20% to 40% discounts on credit consumption. Scheduling heavy veo-3.1-quality batch renders in this window significantly reduces project cost.