Utilore

Trim Video

Drop in a video, say where the good part starts and ends, and take that piece away. The rest of the file is left behind — not squeezed, not re-encoded, just not copied.

or drop them here

Minutes and seconds, like 1:30

    By default the cut is made without re-encoding: the compressed frames are copied as they are, so even a large file takes a fraction of a second. The price is that a cut lands on the nearest keyframe, which may be a few tenths away from the moment you asked for.

    How to use

    1. Drag your video onto the area below, or press «Select file».
    2. Write the start and end times, like 0:30 and 1:45.
    3. Press «Trim» and download the piece.

    Good to know

    Why trimming is instant and everything else about video is not

    A video file is a long shelf of already-compressed frames. Cutting means copying a stretch of that shelf into a new file — no frame is ever decoded, so the work is essentially reading and writing. Compressing or converting the same video would mean rebuilding every frame from scratch, which is why those take tens of seconds while this takes a fraction of one.

    Where the cut actually lands

    Compressed video only allows a clean start at a keyframe — a full picture that later frames are described against. Ask for 0:30 and the cut goes to the nearest such frame, usually within a few tenths of a second. If you need the exact moment, tick the box for an exact cut: the video is then re-encoded, which is honest work and takes real time.

    Frequently asked questions

    Is my video uploaded anywhere?

    No. The conversion engine runs inside your browser. Nothing leaves your device, so trimming something personal stays personal.

    Does the quality drop?

    Not at all in the default mode — the compressed frames are copied byte for byte, so the piece is exactly as good as the original. Only the exact-cut mode re-encodes, and there a little quality is spent.

    Why did my clip start slightly earlier than I asked?

    Because it started at the nearest keyframe. That is the cost of not re-encoding, and it is usually a few tenths of a second. Tick «cut exactly» if that matters.

    How large a file can I trim?

    Up to 300 MB. The limit is memory, not speed — the trimming itself would be just as fast on a bigger file.

    Which formats work?

    MP4, MOV, MKV, WebM and most of what phones and cameras record. The output keeps the same format as the source.

    Related tools