Fur-hood trim and backpack edges stayed clean, with no hard cutout line around the subject.
What was measured
Edge quality
How clean are the cutouts around hair, fingers, and clothing edges; are there visible halo, fringing, or jagged edges?
decisive for this rankingtransformation
Clean edges around hair, fingers, and clothing are a core measure of whether the background cutout works well at all. (3 of 3 judges)
What was given, what came back
Test input: Busy Urban Street · video · group: remove-or-replace-video-backgrounds-using-ai
Input — what we sent
Busy Urban Street
A video of a person walking through a busy city street with multiple people, moving vehicles, and a visually complex urban background. It was used to stress segmentation and tracking under heavy background distraction and continuous motion.
Why this input is hard
- · Complex background segmentation
- · Handling background distractions
- · Subject tracking
- · Temporal consistency across frames
- · Edge accuracy during continuous movement
Output — unretouched

Also checked on this input — same tool, 4 other criteria
Hair and fine detail✓ WorkedIndividual fur strands were separated cleanly and nearby falling snow was preserved instead of being erased with the background.Motion handling✓ WorkedThe tool tracked 3–4 background pedestrians at once through a full 20-second continuous-motion clip without merging or dropping anyone.Output resolution✗ FailedA vertical 1080×1920 source was exported as a 2464×1080 landscape canvas, with the subject confined to a narrow vertical strip.Temporal consistency✓ WorkedThe matte boundary stayed stable across the full clip, with no jitter at the checked start, middle, and end timestamps.
Provenance
- Observation
- 093594f3-3468-40f6-bbfd-2185b3caad02
- Evidence run
- 10155228-7ce8-438a-a210-547331ef080b
- Study
- Remove or Replace Video Backgrounds Using AI
- Research task
- 86ba42c2d
- 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: "fotor",
scenario: "remove-or-replace-video-backgrounds-using-ai"
})MCP · mcp.aidemos.com/api/mcp
Free with attribution.
Same input, same check — 6 other tools
measured on Edge quality
Bria.ai⚠ StruggledThe cutouts are dim and partially soft-edged, with semi-transparent edge fringing and residue in gaps that should read as pure black.Cutout.Pro⚠ StruggledLeaves a residual dark shadow smudge near the feet instead of a clean shoe-to-ground cutoff.FlexClip⚠ StruggledThe cutout keeps a soft grey-white halo around the beanie and head silhouette, so the edge remains visibly fringed under snowy street conditions.InVideo AI✓ WorkedIt maintained clean cutout edges in the low-contrast night scene, with no halo or sky-bleed around the silhouette.Media.io⚠ StruggledFor moving multi-person footage, jacket, sleeve, and pant-leg boundaries faded gradually into black instead of cutting sharply, leaving a soft feathered outline.VEED⚠ StruggledProduces rough subject outlines and backpack-edge artifacts on the multi-person street cutout, rather than a clean silhouette.
This evidence is published in
Real inputs and real outputs, no retouching · every cell queryable via API & MCP · aidemos.com