Evidence · first-party tested/Best AI Tools for Generating UGC-Style Video Ads With AI Avatars

The output only fills about 55% of the 9:16 canvas, leaving large dead white bars top and bottom, so the clip is not a native full-bleed vertical export.

✗ Failed🧾 artifact-verifiedinput + output shownTest date not recordedHeyGen →

What was measured

Platform formats

Correct aspect ratios and lengths for each channel or short-form platform.

context, not decisivetransformation

Aspect ratios and length presets are delivery convenience; they matter, but they do not by themselves make the ad better or worse. (3 of 3 judges)

What was given, what came back

Test input: FutureSmart AI – SaaS · mixed · group: ugc-style-video-ads

Input — what we sent

Input, verbatim

Product URL: https://aidemos.com/

Exact script:
Hook: Finding the right AI tools shouldn't take hours.
Script: I've been using FutureSmart AI to discover and compare AI tools in one place. It helps me find the right tool faster with real use cases, rankings, and detailed comparisons. If you regularly use AI tools for work, it's definitely worth checking out.

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

A short-form UGC ad prompt for a SaaS product discovery/comparison platform, designed to test whether the tool understands a software product, writes a believable testimonial-style script, and produces a realistic AI presenter video with captions.

Why this input is hard

· SaaS product understanding
· Script quality
· Avatar realism
· Voice quality
· Caption quality
· Overall ad readiness

Output — unretouched

Also checked on this input — same tool, 2 other criteria

Avatar realism◐ MixedThe presenter stays visually believable overall, but the output has a fused/warped right hand at 1s and 14.9s, which breaks the realism enough to keep it from being cleanly convincing.Caption quality✗ FailedCaptioning is absent in the FutureSmart run: the researcher checked 8 timestamps from 0s through 14.9s and found zero burned-in text anywhere in the clip.

Provenance

Observation: d85a401c-453e-41da-8da1-d013b88303b0
Evidence run: 9fdbb84b-4aa0-484d-8f89-5c46608019a5
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: "heygen",
  scenario: "ugc-style-video-ads"
})

MCP · mcp.aidemos.com/api/mcp

JSON · ai.aidemos.com/v1/observations/d85a401c-453e-41da-8da1-d013b88303b0

Free with attribution.

Same input, same check — 2 other tools

measured on Platform formats

JoggAI◐ MixedThe export format is correct at full-bleed vertical 9:16 (1080×1920), but the clip is only 18.4 seconds long, below the requested 20–30 second range.Synthesia✗ FailedThe FutureSmart output was generated in landscape rather than the requested vertical 9:16 short-form format.

This evidence is published in

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