Leaves a residual dark shadow smudge near the feet instead of a clean shoe-to-ground cutoff.
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, 3 other criteria
Hair and fine detail⚠ StruggledBakes falling snow into the foreground mask as static speckled texture.Motion handling✓ WorkedKeeps a moving foreground pedestrian isolated while the background stays removed, and even a second person can appear as a separate cutout in one frame.Output resolution⚠ StruggledDownscales the roughly 1080×1920 source to 360×640 and truncates a 20.02s clip to 5.005s.
Provenance
- Observation
- dd6eae01-0b7a-4157-833a-59aaa267e034
- 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: "cutout-pro",
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.FlexClip⚠ StruggledA blurred dark smudge/shadow trails under both subjects' feet instead of a clean foot-to-ground cutoff.Fotor✓ WorkedFur-hood trim and backpack edges stayed clean, with no hard cutout line around the subject.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