Overview
Video Capture records a video on your phone with your device's live readings drawn right on top of the footage, so voltage, temperature, volume, and the audio oscilloscope/FFT appear burned into the saved video. It is built for showing off a build, making demo clips, and documenting a problem for support. Open it from the Record tab in the AuralSync app bottom navigation, or from the camera button on any connected device's page.
This is different from Recording Sessions, which logs your device's numbers as reviewable data. Video Capture produces a normal video file you can share anywhere; Recording Sessions produces a data log you review in the app or on the web portal.
The readings are drawn into the video itself, so there is no separate overlay file and nothing extra to line up afterward. What you see on screen is exactly what ends up in the saved video.
What You Can Overlay
The panels available depend on which device you are recording. The app only offers the readings your device actually reports.
| Panel | Shows | Devices |
|---|---|---|
| Voltage | Live voltage with a rolling graph, the session high/low, and the graph's current range | Any device that reports voltage (WVC, WVC-PRO, HPVM, HPPM) |
| Temperature | Each connected temperature probe's reading | WVC-PRO, WTH, WDD |
| Volume | Master volume, or one bar per channel group when you have groups set up | WVC family |
| Oscilloscope | The live audio waveform for each channel, with the channel's peak voltage | WVC-PRO, SSA |
| FFT | The frequency spectrum for each channel | WVC-PRO, SSA |
A branding line you can edit and an LF Audio badge round out the layout, along with the device name (or names, when you record more than one device at once).
Starting a Recording
From the Record tab
Use this when you want to choose exactly which devices and readings appear.
- Open the Record tab in the bottom navigation.
- Your connected devices are listed. Turn the switches on for the sensors you want to overlay from each device.
- Tap Launch camera.
- Grant the camera, microphone, and photo-library prompts the first time (see Permissions below).
From a device's page
Use this to quickly record a single device.
- Open the device from the Devices tab.
- Tap the video-camera button in the top bar.
Either way, the camera opens full screen with your readings already overlaid on the live view.
The Camera Screen
The camera preview fills the screen and your selected readings are drawn on top. A small toolbar sits along the edges:
| Control | What it does |
|---|---|
| Record | Starts and stops the recording. |
| Switch camera | Switches between the front and rear cameras. When Record both cameras is turned on, this swaps which camera is full-screen instead. |
| Record both cameras | Records the front and rear cameras at once, one full-screen and one in a small inset. Appears only on phones that can run both cameras together. |
| Camera controls | Shows or hides the manual camera controls bar (ISO, shutter, white balance, focus, exposure, zoom, torch). Appears only when a control is turned on in Recording Settings and your phone supports it. |
| Settings | Opens Recording Settings: the manual camera controls and framing guides (Camera tab), and which readings appear (Overlay tab). |
| Move/Arrange | Turns the layout editor on and off so you can reposition panels. |
| Close | Leaves Video Capture and returns to the app. |
Arranging the Overlay
Tap the move/arrange control to enter the layout editor, then position each panel however you like:
- Drag a panel to move it. Panels snap to a grid so they line up cleanly and sit flush next to each other without overlapping.
- Pull the corner handle to resize a panel. Width and height are independent, so you can make an oscilloscope panel wider without stretching the text.
- Tap the branding line to type your own text (a shop name, a build name, anything you like). It is remembered for next time.
- Move the Record button to a comfortable spot. It drags and snaps to the grid like a panel (it only moves, it never resizes), and its position is remembered for next time.
Your layout is saved per device, so each device keeps its own arrangement whether you record it on its own or alongside others.
Make the panels you care about large and drop the ones you don't need, so the numbers read clearly when the video is played back on a phone.
Recording Settings
Open Settings from the camera toolbar to open Recording Settings. It has two tabs: Overlay for which readings appear, and Camera for the manual camera controls and framing guides.
Overlay tab
Chooses which readings are drawn over the video. When you have more than one device selected, each device gets its own section.
- Turn each reading on or off (Voltage, Temperature, Volume, Oscilloscope, FFT).
- Oscilloscope and FFT channels: show every channel or just the ones you want.
- Voltage min/max + range: overlay the session's lowest and highest voltage plus the graph's current scale on the voltage panel.
- Oscilloscope peak voltage: show each channel's peak voltage on its waveform panel.
- Channel names: show or hide the per-channel and oscilloscope/FFT labels.
- Device labels: when recording several devices, tag each panel with its device name.
Changes take effect immediately on the live preview.
Camera tab
Turns on the manual camera controls and framing guides, and the Android auto-rotate option. Each control you turn on here appears in the camera controls bar on the live view, as long as your phone supports it (see Camera Controls below).
- Manual controls: Manual exposure (ISO and shutter), White balance, Focus, Exposure compensation, Torch, Zoom, and Tap to focus.
- Framing guides: Grid (rule-of-thirds) and Level (horizon / tilt indicator).
- Auto-rotate while recording (Android): see the next section.
Auto-Rotate While Recording (Android)
By default, an Android recording follows your phone: if you turn the phone while filming, the picture and your overlays rotate to match, so the clip plays back the way you were holding it at each moment.
If you would rather the picture stay fixed no matter how you move the phone, open Settings from the camera toolbar and turn off Auto-rotate while recording in the Camera section. With it off, the video and overlays lock to the orientation you started the recording in.
On iPhone, recordings always stay upright in portrait, so this option does not appear.
Recording and Saving
- Frame your shot and arrange the panels the way you want them.
- Tap Record. A timer appears while recording.
- Tap Record again to stop.
- The video is saved to your phone's photo library (on Android, into an album named LF Audio).
On iPhone, saving a finished clip to your photo library can take a few moments after you stop, especially for a longer recording. Wait for the save to complete before leaving the screen.
The overlay is already part of the saved video, so you can share it straight from your Photos or Gallery app.
Recording Multiple Devices
From the Record tab you can turn on readings from several connected devices and record them all in one video. Each panel is tagged with the device it came from, and the bottom of the frame lists the device names (shortened to fit alongside the LF Audio badge). This is useful for showing a multi-amp build, or a base station and its sensors together.
Recording Both Cameras
Some phones can run their front and rear cameras at the same time. On those phones, Video Capture can record both in one video: one camera fills the frame while the other rides in a small picture-in-picture inset, with your readings drawn on top. Both camera views and the overlay are recorded straight into the saved video, so there is nothing extra to line up afterward.
Tap Record both cameras in the toolbar to turn it on. To begin, the rear camera fills the screen and the front camera sits in the inset. Tap it again to return to single-camera recording with the usual Switch camera control.
The Record both cameras control only appears on phones whose hardware can run both cameras at once (recent iPhones and many recent Android phones). On phones that cannot, the control is hidden and recording works normally with a single camera and the Switch camera control.
You position the inset the same way you position panels. Turn on the layout editor (see Arranging the Overlay above), then drag the inset to move it and pull its corner handle to resize it. Its position and size are remembered app-wide across recordings and restarts, since the cameras are not tied to any one device.
To swap which camera is full-screen, either tap the inset or use the top-right camera control, which changes from Switch camera to Swap main camera while both cameras are on (see The Camera Screen above). Swapping is instant on both iPhone and Android, since both cameras are already running, and you can swap at any time, including while recording.
Recording both cameras needs no extra permissions. It uses the same camera and microphone access the app already has, so both lenses are covered.
Camera Controls
On phones that support manual camera controls, Video Capture can do more than point and shoot. Tap the Camera controls button in the top toolbar to open a control bar along the bottom of the screen, the same kind of manual controls a "Pro" mode gives you in a phone's own camera app. Like the record button, this bar only ever appears on your screen; it is never drawn into the saved video.
Each control is a chip showing its current value. A small A on a chip means that control is on Auto. Tap a chip to open its panel and switch it to Manual.
| Control | What it does |
|---|---|
| Exposure | Auto lets the camera set the brightness. Switch to Manual to lock ISO (sensor sensitivity) and shutter speed yourself. While on Auto, an Exposure slider brightens or darkens the shot without going fully manual. |
| White balance | Auto tracks the lighting. Manual locks a color temperature in Kelvin, so warm shop lighting doesn't tint your footage. |
| Focus | AF keeps focus automatic. Manual sets a fixed focus distance from near to far, so focus can't drift mid-shot. |
| Zoom | Sets the zoom level. You can also pinch the preview to zoom. |
| Torch | Turns the phone's video light on or off while recording. |
| Reset | Returns exposure, white balance, and focus to Auto in one tap. |
A longer manual shutter lets in more light but lowers the frame rate, so fast motion looks less smooth.
Tap to focus
With Tap to focus turned on, tap anywhere on the preview to set focus and exposure on that spot. Long-press to lock them so they hold while you move the camera.
Framing guides
Two optional guides help you line up a shot: Grid overlays rule-of-thirds lines, and Level shows a horizon / tilt indicator so you can keep the phone straight. Both are on your screen only and are never recorded into the video.
Each camera keeps its own look
Your manual settings are kept per camera (front and rear), not per position on screen. So if you dial in exposure, white balance, focus, or zoom on the rear camera and then swap it into the picture-in-picture inset (see Recording Both Cameras above), it keeps the look you set, even in the small inset. Your settings are remembered for next time.
The Exposure slider starts at neutral each time you open Video Capture, so a brightness nudge from an earlier shot never carries over and over-exposes the next one.
What appears in the bar
A control shows up in the bar only when you have turned it on in Recording Settings > Camera and your phone's camera supports it. Controls your phone can't do are simply left out, and if you have turned everything off, the Camera controls button itself is hidden.
Telemetry dims while you adjust
While the control bar is open, your reading panels fade slightly so the controls are easy to see against them. This dimming is only on the live preview; the saved video keeps your panels at full brightness in the positions you set.
Permissions
Video Capture needs three permissions, requested the first time you open the camera:
| Permission | Why |
|---|---|
| Camera | To show and record the live view. |
| Microphone | To record sound with the video. |
| Photos / Gallery | To save the finished video (add-only; the app cannot see your other photos). |
If you decline a permission, you can still open the camera, but you may be asked again, or you can enable it in your phone's Settings for the AuralSync app.
Tips and Troubleshooting
A quiet audio channel shows a small oscilloscope trace rather than a full-height one, matching how your device's own screen displays it. A full, active signal fills most of the panel.
If the camera preview looks frozen after you switch to another app and come back, close and reopen Video Capture; the camera reconnects on its own.
For consistent footage in one spot, set exposure, white balance, and focus to Manual (see Camera Controls) so the picture doesn't shift as amps light up or people move through the shot.
Recording the camera plus live oscilloscope and FFT is demanding. On a warm day or a long recording, the phone may heat up; keep clips reasonably short if you notice it getting hot.