MAJORFailure Reference

Google Veo Motion Failure — Refund Guide

Technical Classification

Motion Prior Degeneration

Motion Prior Degeneration on Veo occurs when the temporal coherence model fails to maintain progressive motion across the clip duration. The model can lock into a short looping motion pattern, or simply stop generating new motion mid-clip while the visual remains rendered. Most common on Veo clips longer than 4 seconds with single-subject motion (dancing, walking, sports).

How to identify this failure

✕Subject motion freezes mid-action while clip continues rendering
✕Same 0.5-1.0 second motion clip loops 3+ times in the same shot
✕Walking or running motion stutters — foot positions snap rather than transition
✕Hand or face freezes while body continues moving (or vice versa)
✕Final 1-2 seconds of clip are visibly slower than first 1-2 seconds

Real generation examples

Prompt used

"Ballet dancer performing a pirouette in a sunlit studio"

Failure observed @ 0:02 → 0:05

Dancer completes one rotation at 0:02, then freezes mid-rotation for remaining 3 seconds

Prompt used

"Chef whisking eggs in a stainless steel bowl, kitchen scene"

Failure observed @ 0:00 → 0:04

Whisking motion loops the same 0.8 second pattern 4 times in 4 seconds

Documentation strength

If you need to escalate

HIGH — Motion quality is a marketed Veo capability. Refund tickets citing motion-prior degeneration on paid output are honoured with timestamp evidence.

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 Motion Prior Degeneration 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 Motion Prior Degeneration 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 "Motion Prior Degeneration". 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

Does Google refund Veo motion failures?

Yes — Veo support recognises motion-prior degeneration on paid clips as a defect. Cite "Motion Prior Degeneration" with the generation ID and timestamps of the freeze or loop.

Why does Veo motion freeze or loop?

Veo's temporal coherence model uses a learned motion prior that degenerates on long-duration prompts. The model can fall into a low-entropy looping state rather than committing to progressive motion, especially when prompt motion vocabulary is ambiguous.

How do I avoid Veo motion freezes?

Keep motion-heavy clips under 4 seconds. Specify motion progression explicitly ("starts at X, ends at Y"). Avoid prompts with cyclic motion verbs (whisking, drumming, dancing) on long durations. AVA flags loop-risk prompts before generation.

Score your prompt

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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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