Simple GUI#
Simple GUI is available on the attached HDMI output.
Background colors#
| Colour | Meaning |
|---|---|
| Black | Idle. |
| Red | At least one camera is actively writing frames to disk. |
| Green | RAM buffer is filling, or buffered frames are still flushing after stop. |
| Purple | Live drop-frame alert. |
| Magenta | Live frame-count sync mismatch. |
| Blue | Storage pre-roll warm-up is running. |
| Yellow | RAM load has passed the safety threshold (80 %); recording is auto-stopped. On a 4 GB CM5, headroom stays comfortable even at UHD/4K ClearHDR (measured ~73% peak usage); genuine 2 GB boards remain unmeasured and may trip this sooner — see Quick start. |
Indicators#
- The buffer meter in the lower-left corner shows used vs total frame buffer. Optional hatch lines can be enabled in
settings.jsoncunderhdmi_display.overlays. - During storage pre-roll, the GUI hides recording time and clip names.
- If zoom is anything other than the configured default, the zoom box is highlighted yellow.
- If dynamic resolution is holding a mode other than the one you selected, the resolution numbers turn green. The web GUI shows the same green. The readout carries the bit depth and the SDR/HDR badge sits beside it, so a substitution that changed the capture class rather than the frame size shows up in the same place.
- If shutter angle sync is activated, the shutter value is green.
- If fps is modified by double fps being activated, the number turns green.
- When a compatible USB microphone is connected, the right side shows VU meters plus sample rate, bit depth, and a
WAVbadge once the latest take contains both DNG frames and a WAV sidecar.
Latching tiles. The DROP tile latches after a drop-frame event and stays visible until a new take starts. A crossed magenta SYNC tile latches as soon as the live expected-vs-recorded frame slot count is outside the configured live tolerance (default +/- 2 frames), then stays visible through the end of the take and until the next take starts. Dropped-frame holes do not trigger the SYNC tile by themselves; they are shown by DROP.
For redraw timing and performance tuning, see Simple GUI refresh tuning.