MAJORFailure Reference

Runway ML Temporal Flicker — Frame Discontinuity & Aliasing

Technical Classification

High-Frequency Temporal Aliasing & Frame Discontinuity

High-Frequency Temporal Aliasing & Frame Discontinuity occurs when adjacent frames in the generated video have significant luminance, colour, or geometry differences that exceed perceptual thresholds. The result is stroboscopic flickering visible to the naked eye that makes the video unusable for any professional context. This failure mode is particularly prevalent when the prompt requests high frame rates (e.g., 120fps slow motion — Runway cannot generate true high frame rates), complex lighting changes, or rapid motion.

How to identify this failure

✕Visible stroboscopic flicker throughout the clip
✕Random bright or dark flashes in specific areas
✕Colour shifting between frames (e.g., warm/cool flicker)
✕Motion blur appearing and disappearing inconsistently
✕Sharp texture boundaries flickering at high frequency

Real generation examples

Prompt used

"Water fountain exploding upward, slow motion, 120fps"

Failure observed @ 2.8s

Temporal aliasing inconsistent with specified slow-motion parameters — stroboscopic flash

Documentation strength

If you need to escalate

MEDIUM-HIGH — Temporal flicker is clearly perceptible and makes professional use impossible, but may require strong documentation.

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 High-Frequency Temporal Aliasing & Frame Discontinuity 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 High-Frequency Temporal Aliasing & Frame Discontinuity 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 "High-Frequency Temporal Aliasing & Frame Discontinuity". 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

How does Runway support handle for flickering or flashing video?

Yes, when the flicker is severe enough to make the video commercially unusable. Use the technical term "High-Frequency Temporal Aliasing & Frame Discontinuity" and specify the timestamps where flicker occurs and its subjective severity.

Why does Runway video flicker?

The diffusion denoising process treats each frame semi-independently. Without strong temporal consistency conditioning, adjacent frames can differ significantly in luminance and geometry — perceived as flickering.

Can flickering be fixed in post?

Mild flicker can be reduced with deflicker filters in DaVinci Resolve or After Effects. Severe flickering (full-frame luminance swings) is generally not fixable without frame replacement. AVA's L1 scanner flags high-flicker-risk prompts like "120fps" before generation.

Catch it before you generate

AVA scores this failure mode against your prompt in real time

Free Chrome extension. Analyzes your prompt as you type, flags failure-prone patterns specific to this model, and tells you what to rewrite — before you commit credits to a generation that will fail.

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