Evidence · first-party tested/creatify-ai

Subtitles are generated and readable, so the captions themselves are usable on this output.

✓ Worked🧾 artifact-verifiedinput + output shownTest date not recordedTopview AI →
What was measured
Caption quality

Whether captions are accurate, readable, well-timed, and styled in a way that fits short-form social ads.

decisive for this rankingtransformation

Captions are part of the ad experience in short-form video and affect clarity, pacing, and perceived polish, so poor captions hurt the actual output. (3 of 3 judges)

What was given, what came back

Test input: Duolingo – Mobile App · text
Input — what we sent
The exact prompt
Product URL: https://www.duolingo.com/

Exact Script
Hook: Learning a new language has never been this easy.
Script: I've been using Duolingo for a few minutes every day, and it's made language learning simple and fun. The short lessons are easy to follow, and the daily practice keeps me motivated. If you're planning to learn a new language, give Duolingo a try.

Output Requirements
- Vertical (9:16)
- 20–30 seconds
- UGC-style AI presenter
- Natural AI voice
- Captions enabled

A short-form UGC-style video ad prompt for a consumer mobile app, designed to test whether a tool can explain app benefits simply and persuasively in a social ad format.

Why this input is hard
  • · mobile app understanding
  • · consumer app promotion
  • · script quality
  • · avatar realism
  • · voice quality
  • · caption quality
  • · overall ad readiness
Output — unretouched
Download video: topview-ai-topview-duolingo-output-mp4-7d3696bd9cad.mp4
Also checked on this input — same tool, 6 other criteria
Ad-readiness◐ MixedThe export is usable and vertical, but the flat delivery, missing app UI context, and realism issues limit paid-ad readiness.Avatar realism⚠ StruggledThe presenter still looks AI-like, and minor lip-sync mismatches remain visible.Platform formats✓ WorkedTopview can export vertical 9:16 videos for this input, matching short-form social ad formats.Product understanding◐ MixedIt states the learning benefit clearly, but it does not surface app UI or language-learning context strongly enough.Script quality & persuasiveness◐ MixedIt can deliver a simple app-promo script clearly, but the result lacks energy and creator-style persuasion.Voice quality◐ MixedThe voice stays stable across the video, but the tone is flat and neutral rather than engaging.
Provenance
Observation
2a49f172-cf6b-4e22-a31c-95de08ca1937
Evidence run
f91a51ec-b400-46fe-97f5-7e779fe17532
Study
Generate UGC-Style Video Ads With AI Avatars
Research task
86baxegpg
Tested at
not recorded
Source
first-party
Evidence state
verified
Proof shown
input + output shown
Cost / latency
not captured
Repeat run
not captured
Tester
not captured

The last three rows are honest blanks, not placeholders — our capture has no field for them yet.

Query this
get_evidence({
  tool: "topview-ai"
})
MCP · mcp.aidemos.com/api/mcp
JSON · ai.aidemos.com/v1/observations/2a49f172-cf6b-4e22-a31c-95de08ca1937
Free with attribution.
Same input, same check — 1 other tool
measured on Caption quality
Creatify.ai✓ WorkedCaptions are correctly generated and synced with the narration.
This evidence is published in
creatify-ai →synthesia →topview-ai →vidnoz-ai →
From the same study (page rebuilt from a later run)
Best AI Tools for Generating UGC-Style Video Ads With AI Avatars →
Real inputs and real outputs, no retouching · every cell queryable via API & MCP · aidemos.com