Speed Overlay Video App for Android
VelocityCam records the video and the GPS speed data at the same moment, so the number shown on screen belongs to that frame. When you export, the overlay is rendered into the new file — no separate editing pass, no guessing at timing. VelocityCam is not currently a general-purpose editor for importing arbitrary external videos; the telemetry has to be captured by VelocityCam while the video is recorded.
How the speed overlay is produced
Speed comes from the phone's GPS receiver and is sampled alongside the video timeline. Nothing is estimated after the fact, and the original recording file is never rewritten.
- GPS-derived speed in MPH or KM/H
- Speed samples aligned to the video timeline as it records
- Live overlay on screen while recording
- Same overlay reproduced during Library playback
- Overlay composited into exported files
- Original recording preserved untouched
When a speed overlay is the point
Scenic drives, acceleration clips, boat runs, trail rides, and track days all read better with a speed readout that viewers can trust. Because the value is captured live, the clip is self-documenting rather than annotated later.
Recording a speed overlay clip
- 1
Wait for GPS lock
VelocityCam blocks recording until GPS is locked so the very first frame already carries real speed.
- 2
Record with the HUD you want
Pick a HUD profile before you start. The profile you choose is what appears on screen and, later, in the export.
- 3
Export with the overlay baked in
Choose Original, 9:16 Vertical, 1:1 Square, or 16:9 Landscape. The overlay is rendered into the new file and the source recording stays as it was.
Free
- GPS speed telemetry captured with the video
- Minimal HUD — clean, speed-focused, no external hardware
- Synchronized playback
- Exports in all four aspect ratios with the HUD baked in
- Android share sheet for the usual social apps
Pro — one-time lifetime unlock
- Performance HUD (GPS performance metrics, no mount required) and premium HUD themes (Marine Blue, Minimal White, Cyber Green)
- Performance Analytics: GPS-estimated speed tests, distance tests, and run comparison
- Watermark control (standard, custom text, or none)
- Offline Route Trace overlay in playback and exports
- CSV, GPX, and KML telemetry export
Nothing leaves the phone on its own
There is no account, no cloud upload, and no analytics or advertising SDK in the Android app. Recordings and telemetry stay on the device until you export or share them yourself.
Device requirements
- Android 10 or newer
- Compatible rear camera (front-camera switching before recording, where supported)
- GPS hardware
- Free storage for recording and export
Frequently asked questions
Can I add a speed overlay to a video I already recorded elsewhere?
No. VelocityCam records telemetry together with the video, so it cannot add accurate speed to footage captured by another camera or app.
Does the overlay change my original file?
No. Exporting creates a new file; the original recording is left untouched.
Is the speed accurate enough to prove anything?
It is consumer phone GPS. It is good enough for reviewing and sharing a session, but it is not a certified measurement and should not be treated as legal proof.
Can I get a speed overlay without mounting my phone?
Yes. The Pro Performance HUD shows GPS-based speed and other performance metrics and can be recorded without a fixed mount, which suits passengers or anyone recording on foot.
Install VelocityCam and start recording
VelocityCam runs on any Android 10+ phone with a rear camera and GPS. Record a session, review it with synchronized telemetry, then export and share it.
Using an iPhone? VelocityCam for iPhone is coming soon.
Learn about VelocityCam for iPhone →Related VelocityCam pages
The GPS performance HUD used across driving, track, and marine sessions.
GPS-estimated speed tests, distance tests, and run comparison.
The real workflow, start to finish.
The full picture of what VelocityCam records.