trimmy a comically simple video trimmer
open a clip. drag the start and end. export. that's the whole app.
download for windows
what it does
- Opens any common video. MP4, MKV, MOV, WebM, AVI, TS, WMV, FLV and more, in H.264, HEVC, AV1 or VP9.
- Four ways in: drag it onto the window, paste its path, browse (Ctrl+O), or right-click it and pick Open with.
- Shows the waveform, so you can see where the shot, the kill or the shout is.
- Exports in about a second with zero quality loss, because it doesn't re-encode.
- Keeps every audio track, so game audio and your mic both come through.
- Never touches the original. Your clip is saved next to it as
name_trimmed.mp4. - Stays on your PC. No account, no upload, no watermark.
what it doesn't do
titles transitions filters music stickers multiple clips tracks projects accounts ai
It trims. That's it. Made for NVIDIA ShadowPlay, AMD ReLive, OBS and Xbox Game Bar recordings, when all you want is the good ten seconds.
install
- Download
Trimmy_0.2.0_x64-setup.exe(58 MB, mostly FFmpeg). - Run it. It installs just for you: no admin prompt, nothing else to install.
- If Windows says "Windows protected your PC", click More info, then Run anyway. Trimmy isn't code-signed yet (a certificate costs money every year), so Windows is wary of it like any new download.
needs windows 10 or 11, 64-bit. uninstall from settings > apps.
faq
Is it really free?
Yes. Trimmy is free and open source (MIT license): no ads, no account, no trial, no watermark.
Does trimming lose quality?
No. Trimmy copies the original video and audio into the new file as they are (an FFmpeg stream copy) instead of re-encoding them. That's also why it only takes a second.
Why does my clip start a bit before my start handle?
A stream copy can only start on a keyframe, so the clip starts at the last one before your handle: about a second early for ShadowPlay recordings, up to several seconds with OBS's default settings. The end is always exact. A frame-exact mode is on the roadmap.
Is there a Mac or Linux version?
There's a macOS build for Apple Silicon and Intel (macOS 11 or later), but nobody has tried it on a real Mac yet. The macOS notes say how to open it (download the .dmg); please report back either way. No Linux build yet.
Is the download safe?
The installers are built from the public source code by GitHub Actions and attached to the GitHub release, which lists each file's SHA-256 checksum. Windows warns only because Trimmy isn't code-signed yet.