MAJORFailure Reference

Google Veo Physics Collapse — Refund Guide

Technical Classification

Physics Simulation Constraint Violation

Physics Simulation Constraint Violation on Veo occurs when the diffusion model produces visually plausible motion that defies Newtonian mechanics. Veo markets itself on photorealism and physical realism — when paid output ships with water flowing upward, objects floating in air, or collisions producing no physical response, the failure is objectively verifiable and clearly model-attributable rather than user-prompt-attributable.

How to identify this failure

✕Liquid flowing upward against gravity
✕Solid objects floating without buoyancy or support
✕Collisions producing no displacement or deformation
✕Falling objects following non-parabolic trajectories
✕Steam, smoke, or particles moving inconsistently with airflow

Real generation examples

Prompt used

"Waterfall cascading down a granite cliff into a forest pool, photorealistic"

Failure observed @ 0:02

Water visibly flows upward at 0:02 in the central column of the falls

Prompt used

"Coffee being poured from a French press into a glass mug, slow motion"

Failure observed @ 0:04

Stream stays in mid-air after the press is lifted; no continuous flow connection to mug

Documentation strength

If you need to escalate

HIGH — Physics violations are objectively verifiable and contradict Veo's marketed photorealism. Strong escalation precedent.

AVA is a pre-purchase prevention tool, not a post-purchase recovery tool. Platforms generally do not guarantee credit refunds for output-quality failures; goodwill credits are at each platform's discretion. The strength rating reflects how well-formed your support ticket can be, not a promised outcome.

Prevention + documentation steps

01
Score your prompt before you generate
Run your prompt through AVA's pre-flight scoring against the Physics Simulation Constraint Violation pattern. Green light = generate. Yellow/red = rewrite using the suggested fix before you commit credits.
02
Capture Generation ID + timestamp if it failed anyway
Find the Generation ID in the URL or share link. Note the exact time when the Physics Simulation Constraint Violation first appears (e.g. "failure first visible at 1.2s"). Timestamped evidence is significantly stronger than a general complaint.
03
Use the correct technical term in your support ticket
Describe this failure as "Physics Simulation Constraint Violation". This term maps to a recognised internal workflow in the support system and routes the ticket to the right team.
04
Submit via the correct support channel
Runway has no direct email intake. Pro+ plan: open the in-app AI Assistant (help widget bottom-right of app.runwayml.com), describe the failure with the technical term, attach evidence. Free/Standard plan: human support isn't available — your channel is Discord #community-help with @On Call - Moderators.

Frequently asked questions

Will Google refund Veo physics failures?

Yes — physics violations are objectively verifiable and uniquely attributable to model failure. Submit with timestamp evidence and cite "Physics Simulation Constraint Violation". Veo support honours these tickets.

Why does Veo violate physics in output?

Like all video diffusion models, Veo has no explicit physics simulator — it learns motion statistically from training data. When prompts combine complex fluid dynamics with long duration (>4s) or specific viewing angles, the learned prior can collapse and produce physically impossible motion.

How do I avoid Veo physics collapse?

Keep fluid and collision-heavy clips short (≤4 seconds). Specify camera angle (top-down vs. side) explicitly. Avoid multi-body interactions in a single prompt. AVA pre-flights physics-risky prompts before you spend credits.

Score your prompt

Score your prompt against this failure mode in 30 seconds

Paste your prompt and the platform you intend to use. AVA returns a red/yellow/green score against this specific failure mode plus a concrete rewrite if the risk is high.

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