The subject stays tracked through the entire walk as the person moves farther away and more centered in frame, without losing the cutout.
What was measured
Motion handling
Does quality degrade when the subject moves quickly, gestures, or leans?
decisive for this rankingtransformation
A video-background tool has to keep working when the subject moves; failure here means the core effect breaks down. (3 of 3 judges)
What was given, what came back
Test input: Oregon Coast Walking · video · group: remove-or-replace-video-backgrounds-using-ai
Input — what we sent
Oregon Coast Walking
A daylight outdoor video of a single person walking along an Oregon coast beach, with the camera following the subject and ocean waves, sand, and sky visible in the background. It was used to test background removal and replacement on a moving subject in a natural outdoor setting.
Why this input is hard
- · Outdoor background removal
- · Subject segmentation during movement
- · Hair and edge preservation
- · AI background replacement quality
Output — unretouched
Also checked on this input — same tool, 2 other criteria
Edge quality✓ WorkedThe moving subject is cut out cleanly across the walk, with the person remaining isolated rather than breaking into jagged edge artifacts.Output resolution✗ FailedA vertical 2160×3840 source was exported into a landscape 2464×1080 canvas, leaving the subject confined to a narrow center strip.
Provenance
- Observation
- ea56916c-a73d-4bf6-873d-b40591fd6cf6
- 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 Motion handling
Bria.ai✓ WorkedThe walking subject stayed isolated while taking a few steps and then slowing to a stop, so normal walking motion did not break the cutout.Cutout.Pro✓ WorkedKeeps a walking full-body subject intact through several steps, with the figure still cleanly isolated and no scenery leakage.FlexClip⚠ StruggledA moving leg becomes noticeably softer and blurrier mid-stride, so motion blur adds extra edge softness to the cutout.Kapwing✓ WorkedThe tool kept tracking the walking subject through the Oregon coast clip, isolating the person cleanly against white for the processed portion of the walk.Media.io✓ WorkedThe tracker held a walking subject through normal forward motion without losing the cutout or re-segmenting the body.Picsart✓ WorkedA backlit beach walker stayed isolated while moving forward across the clip, showing that the cutout tracks a single walking subject without dropping them.
This evidence is published in
Real inputs and real outputs, no retouching · every cell queryable via API & MCP · aidemos.com