Use permission, live track, first frame, negotiated settings and delivered cadence as separate evidence stages.
IP-CAM-01 / VIDEO STREAM / SETTINGS
Local Webcam WebRTC Bitrate Test
Encode the current camera through a local peer connection and sample outbound bytes for eight seconds.
Video looks blocky or loses detail in browser calls.
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
Open the target resolution and place detail in the scene.
- 02
Run the eight-second local WebRTC encoder capture.
- 03
Compare average, minimum and maximum bitrate at the same scene.
Evidence the result should expose.
DIRECT / INFERREDAverage kbps
DIRECT / INFERREDMinimum/maximum kbps
DIRECT / INFERREDSample count
DIRECT / INFERREDCodec path
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
Encoder adaptation
02
CPU load
03
Scene detail
04
Browser policy