Video Trimmer
Cut and trim video clips precisely
What is Video Trimmer?
Video Trimmer is a free browser-based video tool from Farvixo that lets you cut and trim video clips precisely. It uses an in-browser FFmpeg build compiled to WebAssembly, so even large clips are processed on your own machine and never uploaded. No account, no watermark and no per-file size limit imposed by a server.
How to use Video Trimmer
Select a video file in Video Trimmer. Conversion happens in your browser using WebAssembly, so even large files never get uploaded anywhere.
Choose the output format, resolution and bitrate — or start from a ready-made preset if you are not sure what to pick.
Start the conversion and watch the progress bar; longer clips take a little time because the work runs on your own machine. Download when it finishes.
Frequently Asked Questions
Does trimming re-encode the video?
Not if you trim on keyframes — the streams are copied, which is instant and completely lossless. Trimming to an arbitrary frame requires re-encoding the section around the cut, which takes longer and costs a little quality.
Why is my cut a second off from where I set it?
Fast, copy-based trimming can only cut at keyframes, which occur every few seconds. Enable precise mode to cut exactly where you asked; it re-encodes, so it is slower.
Is there a limit on file size or length?
No. Nothing is uploaded, so there is no server limit and no queue. The ceiling is your device memory and patience.
Can I cut a section out of the middle?
Yes. Remove-selection mode cuts the middle out and joins the remaining start and end together.
Which formats can I trim?
MP4, WebM, MOV, AVI, MKV and most others, since FFmpeg handles the decoding. The output container matches the source unless you choose otherwise.
What you can use Video Trimmer for
- Getting a clip under the size limit for WhatsApp, Gmail, Discord or a course upload
- Converting a recording to a format a specific player, editor or platform accepts
- Editors who want a quick change without opening a full desktop suite
- Handling confidential footage that must not be uploaded to an online converter
Video Trimmer at a glance
- Tool
- Video Trimmer — Video Tools
- Purpose
- Cut and trim video clips precisely
- Input
- A single file (MP4, WebM, MOV, AVI, MKV)
- Output
- Video file in the selected container and codec
- Processing
- In your browser — files are never uploaded to a server
- Price
- Free, unlimited, no account required
- Limitations
- Bounded by your device's memory and CPU rather than a server quota; very large files may be slow on older hardware
Tips for better results
- Processing speed depends on your own CPU, since the work is local. A laptop on battery-saver will be noticeably slower.
- H.264 (MP4) is the safest choice for compatibility; VP9 or AV1 give smaller files but decode slowly on older devices.
- Leave the tab open and visible — a backgrounded tab gets throttled by the browser and the encode will crawl.
Common problems and how to fix them
The encode is very slow
Everything runs on your device rather than a server farm. Pick a lower resolution or a faster preset, keep the tab in the foreground, and close other heavy tabs.
The output has no sound
The chosen container cannot carry the source audio codec — WebM cannot hold AAC, for example. Re-encode the audio instead of copying the stream.
The browser ran out of memory
The clip is too large to hold in memory. Trim it into shorter segments and process them one at a time.
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