03
CLEAN RE-ENCODE
Mid-GOP fallback
Cuts mid-keyframe re-encode just the affected segment.
What it actually does
02
SMART CUT
Lossless when possible
If your cuts land on keyframes, FFmpeg stream-copies — no re-encode, no quality loss.
04
LOCAL
FFmpeg.wasm in your tab
Files never upload. Output saves to your downloads.
How it works
- Open morph.cool/video-editor. Drop a video on the timeline.
- Step to the in-point with arrow keys, press I. Step to the out-point, press O.
- Hit export. FFmpeg stream-copies if the cuts are clean, re-encodes the segment if not.
- The trimmed MP4 saves to your downloads. The source is untouched.
- Need more than a trim? The rest of Morph runs on your device too — free, with credits only for AI and server work.
1 frameCut precision
0Upload
2 formatsMP4 + WebM
Why people leave the upload-first trimmers
The online trimmers all upload your video to a server. Free tiers cap at 200MB or 5 minutes and stamp a watermark on the way out. Morph trims locally, frame-accurate, no watermark, no time cap.
Frequently asked
Lossless or re-encode?
Lossless when the cuts land on keyframes — FFmpeg stream-copy with no quality loss. When you trim mid-GOP we re-encode the affected segment so the file plays cleanly without artifacts.
Frame-accurate?
Yes. Per-frame seek, frame-by-frame stepping with arrow keys, hot-pluggable in/out points. The cut lands exactly where you placed it.
What formats?
MP4 (H.264 + AAC), MOV, WebM (VP9 + Opus), MKV, AVI in. MP4 and WebM out. The output is a clean container, not a re-wrapped one.
Does the file upload?
No. The trim happens in your browser tab via FFmpeg.wasm. The video, the seek, the trim, and the encode all stay local.
File size limits?
No fixed cap. Practical limits are device RAM and IndexedDB quota — multi-GB videos work on most laptops.
Mobile?
Yes. Touch scrub on the timeline, on-screen I/O buttons, full export.
Nothing leaves your device · Free for what you make, credits for what we run