VIDEO -> SHORTER · Local tool
Trim Video
Cut a video down to the section you actually want.
Last updated
How do I trim a video without uploading it?
Open filetity's trim tool, drop the video in, play it to find the moment you want, and type a start and an end in seconds. Everything runs in the browser tab, so the recording is never uploaded, and only the range you asked for is decoded, which means trimming thirty seconds out of an hour costs about what a thirty second file costs. The cut lands exactly where you typed rather than at the nearest keyframe, which is what tools promising an instant trim from any point are actually doing when the result starts a second early. There is a real difference between the two ends: ending early copies the packets across untouched and is close to instant, while starting later has to decode from the preceding keyframe and re-encode, and the page says which one you are getting before it runs.
01 / Your device
the file stays here
02 / Browser memory
the work runs locally
03 / Back to you
saved on this device
When you would use this
Situations, not settings.
- The thirty useful seconds of a long recording
- Only the range you keep is decoded, so cutting a short clip out of an hour costs about what a short clip costs.
- Dead air at the start of a screen recording
- The cut lands on the frame you typed rather than the nearest keyframe, which is why this takes a few seconds where an instant trimmer would start early.
- Getting under a platform's length limit
- Trimming to the part that matters buys far more quality than any compression setting will, because the same bitrate budget covers fewer seconds.
How it works / no cloud
A conversion engine, not an upload form.
Only the range you asked for is decoded, so trimming thirty seconds out of an hour costs about what a thirty second file costs rather than an hour. Cutting from the very start of a video can be done by copying the packets across untouched; cutting from a point inside it cannot, and the page says which you are getting before it runs.
- Offline ready
- Installable app
- No file limit queue
Straight answers
No accordion. Nothing hidden.
- Is it free?
- Yes, with no watermark and no page limit.
- Does it need an account?
- No. There is no account system.
- Is my file processed on my device?
- Yes. The file is read by your browser and never uploaded. There is no server to send it to.
- What formats are supported?
- MP4, MOV, WebM and MKV in, the same family out. Audio is kept and stays in step.
- What are the limits?
- One range at a time. Keeping two separate sections means running it twice, and there is no joining step here.
- Does it work on mobile?
- Yes, on any modern mobile browser. Large files are limited by the memory the phone gives the browser.
- Does it work offline?
- Yes, once the page has loaded. The tool keeps working with no network connection.
- Why is trimming the end fast and trimming the start slow?
- Because a video is only decodable from certain keyframes. Ending early means simply not writing the rest, so the packets are copied. Starting later means the first frame you asked for probably is not a keyframe, so the video has to be decoded from the nearest one and encoded again to make your chosen moment the beginning.
- Is the cut exactly where I typed?
- Yes, to the frame. Tools that trim instantly from any point are snapping to the nearest keyframe instead, which is why the result sometimes starts a second early. This decodes and re-encodes when it has to, in exchange for landing where you asked.
- Does the audio stay in sync?
- Yes. Both tracks are trimmed to the same range and written with matching timestamps. Drift usually comes from cutting the two tracks separately, which is not something that can happen here because there is one range.
- Can I cut a section out of the middle and join the ends?
- Not in one pass. Trim twice to get the two pieces you want to keep, which this does well, and then join them in a video editor. Joining two re-encoded clips cleanly is a different problem from cutting one.
- How long will it take?
- Roughly proportional to the length of what you keep, not the length of what you started with, because only the range you asked for is decoded. Ending early with no start trim is close to instant, since nothing is re-encoded at all.
Keep working locally
3 available · more coming