Use permission, live track, first frame, negotiated settings and delivered cadence as separate evidence stages.
IP-CAM-01 / VIDEO STREAM / SETTINGS
Webcam Resolution Matrix Test
Probe ten exact camera modes from QVGA through 4K and record delivered settings.
A camera does not reach the resolution claimed by its software or packaging.
This focused entry uses the shared Camera protocol. The measurement logic and Evidence version remain identical to the complete lab.
Remove the easiest false alarms first.
01
Close other camera apps, select the intended device and allow exposure and focus to settle.
02
Keep lighting and scene detail stable during FPS, bitrate and image-signal comparisons.
03
Compare requested, negotiated and delivered settings instead of relying on one resolution label.
Run one repeatable protocol.
- 01
Select the intended camera.
- 02
Run all ten exact resolution requests.
- 03
Review supported, substituted and failed modes.
Evidence the result should expose.
DIRECT / INFERREDRequested mode
DIRECT / INFERREDDelivered mode
DIRECT / INFERREDExact-mode support
DIRECT / INFERREDMode count
Separate observed, review and inconclusive.
Repeat a failed mode or low delivery ratio after changing one factor: lighting, USB path, resolution or system load.
A browser mode failure does not prove the sensor lacks that mode, and relative image signals are not optical calibration.
Start with the likely path, then retest.
01
Browser constraint mapping
02
Connection bandwidth
03
Camera mode table