MAJORFailure Reference

Hailuo AI Text Rendering Failure — Pre-Generation Risk Reference

Technical Classification

Glyph Synthesis & Typographic Coherence Failure

Hailuo's I2V and T2V models share Pika and Runway's underlying limitation: there is no character-level encoder, so in-scene text is synthesized as visual pattern rather than reconstructed from a tokenizer. Any prompt requesting legible signage, packaging copy, or screen UI will produce glyph-shaped marks that look text-like but spell nothing. The failure is most pronounced with Latin alphabets at small sign sizes.

How to identify this failure

✕Storefront signs rendered as glyph-shaped smears
✕Letters mirroring or inverting between frames
✕Screen UI showing unreadable mock text
✕Numbers shuffling between frames on the same surface
✕Brand names replaced with letter-shaped nonsense

Real generation examples

Prompt used

"Hong Kong street market, signs in English and Chinese"

Failure observed @ 0:00

English signs rendered as glyph-shaped smudges throughout; Chinese chars partially legible

Prompt used

"Computer screen showing 'Welcome' message"

Failure observed @ 0:03

Screen text rendered as illegible glyph soup at 0:03

Documentation strength

If you need to escalate

HIGH — Hailuo support recognises text-rendering as a known limitation; refunds are granted with a documented failure.

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 Glyph Synthesis & Typographic Coherence Failure 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 Glyph Synthesis & Typographic Coherence Failure 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 "Glyph Synthesis & Typographic Coherence Failure". 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 Hailuo refund credits for text rendering failures?

Yes. Submit the generation ID, prompt text, and a screenshot of the unreadable text region to Hailuo support; refunds for this failure mode are routinely approved.

Why can't Hailuo render text?

Hailuo, like other diffusion video models, lacks a dedicated typographic encoder. Letter shapes are synthesised as image features rather than reconstructed from characters, so legible text is statistically unlikely.

What prompts are highest risk for Hailuo text failures?

Anything requesting readable signage, screen UIs, book pages, or brand labels. AVA pre-flags these and suggests rephrasing.

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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