The toolbar
Every control on the HUD, left to right, and what each one does.
Everything the overlay does is on one strip along the bottom. This is the whole surface — there are no menus and no hidden panels.
The session controls
| Control | What it does |
|---|---|
| Start / Stop · 0:00 | Starts and ends the session. While running it shows a timer, and in the last thirty seconds before an idle auto-stop it counts that down instead. |
| Sys PAUSED / Sys Audio | The system-audio channel: the interviewer's voice. PAUSED means it is not listening. This is the one to check first when only your own speech is being transcribed. |
| Mic | Your microphone channel. Mute it and your side stops being transcribed; the interviewer is still heard. |
| Vision | Picks the window to watch for on-screen questions. Its tooltip shows what is being watched, when the last frame was sent, and how many were skipped. |
| Answer | Asks for an answer to what was just said, without waiting for MiPrep to decide a question was asked. Use it when the interviewer phrased something as a statement. |
Two channels, separately controllable, is the point: Mic and Sys Audio are your voice and theirs. Muting one does not touch the other.
The window controls
| Control | What it does |
|---|---|
| ⚙ | Opens Settings. |
| ▣ | Shows and hides the separate transcript window that sits beside the HUD. |
| ✥ | Click-through: passes clicks to whatever is underneath. See Clicking through the HUD. |
| 👁̸ | Hides the HUD. It keeps running — this is not quit. |
| ✕ | Quits MiPrep. |
The quick row
Above the buttons sit two controls you will reach for mid-call:
- Opacity — how solid the panel is, from nearly transparent up to fully opaque. Lower is less noticeable to you in peripheral vision; higher is easier to read. It does not affect screen-capture stealth, which is absolute either way.
- Text speed — Fast or Polished, the same setting as Answer speed, surfaced here because it is worth changing between rounds.
The transcript window
A second panel to the right of the HUD, showing what is being heard as it is heard, including partial words mid-sentence.
It is a separate window but deliberately does not look like one: the edge facing the HUD is square, so the two read as a single panel. Toggle it with ▣.