Windows 10 and 11 · NVIDIA
Hit record after it already happened.
It records all the time and saves nothing. Press one key and the last fifteen minutes become a video.
Free. No installer, no account. Needs FFmpeg, which is one command.
Always recording. Never keeping.
From the moment it starts, the last fifteen minutes of your screen and sound sit in a rolling buffer on disk. Everything older is overwritten before it ever becomes a file you own.
Nothing reaches your drive permanently unless you ask for it.
One key, and it is a file.
Press Alt+F10 and the buffer is written out as an MP4 in your Videos folder. The pieces are copied, not re-encoded, so the clip exists within seconds rather than minutes.
A notification appears. Click it and Explorer opens on the file.
Pause without losing it
Alt+F8 stops the recording for as long as you want. What was already buffered is still there when you come back.
You will not feel it
Frames never leave the graphics card and NVENC does the encoding, so the cost is a percent or two of your frame rate.
Your game and your voice, on one track.
System audio is always captured. A microphone can be mixed on top of it, even one on a different interface than your speakers. Mute, volume and mono all take effect while recording continues.
Everything else worth knowing.
Three steps, no installer.
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Install FFmpeg
ScreenReplay uses it to encode. One command in Terminal, once, and you never think about it again.
winget install Gyan.FFmpeg -
Unblock and unzip
Right-click the downloaded zip, choose Properties, tick Unblock, then extract it anywhere you like.
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Run it
Launch
ScreenReplay.exe. A red dot joins your tray and buffering has already started. To have it there every day, put a shortcut inshell:startup.
Questions people ask.
Windows says it cannot verify the publisher. Is that bad?
It means the file is not code-signed, which costs money I have not spent. SmartScreen shows that warning for every unsigned program. Choose More info, then Run anyway. If you would rather not, unblocking the zip before you extract it avoids the prompt entirely.
Does it work on AMD or Intel graphics?
Not yet. Encoding runs on NVENC, which is NVIDIA hardware. AMD and Intel have their own equivalents and the app is built so they can be added, but this release is NVIDIA only.
Why does it need FFmpeg?
FFmpeg does the capturing, encoding and stitching. Bundling it would turn a 780 KB download into something around 100 MB, so ScreenReplay uses the copy on your machine instead. One winget command installs it.
Will it slow my game down?
Barely. Capture happens on the GPU and encoding runs on the dedicated NVENC chip beside it, not on your processor. Expect one or two percent of your frame rate. The buffer lives on disk rather than in memory, so your RAM is untouched.
How much disk does the buffer use?
Around two to three gigabytes of temporary files for fifteen minutes at 1080p60. It is a fixed ring, so it never grows beyond that, and it is deleted when you close the app. Shorten the buffer in the settings if you want less.
The hotkey does nothing.
Something else already owns it. GeForce Experience uses Alt+F10 for the very same feature. Open the settings file from the tray menu, change Hotkey to a free combination, and restart. The app tells you at startup when a hotkey fails to register.
Why is my recording black?
Protected video such as Netflix is blanked by Windows itself at the capture layer, so no recorder can see it. Games and ordinary applications are unaffected.
How do I uninstall it?
Exit it from the tray menu and delete the folder. Settings live in %APPDATA%\ScreenReplay and the buffer in %LOCALAPPDATA%\ScreenReplay; delete those two folders and nothing remains.
Free, and smaller than a photo.
One 780 KB executable in a 324 KB zip. No installer, no account, no telemetry. Your clips never leave your machine. Delete the folder to uninstall.
Windows 10 and 11, an NVIDIA GPU, and FFmpeg.