Trim Video

How to Cut a Clip from a Video by Start and End Time

You may have a long video where only one minute matters: a goal you filmed at a match, a moment from a recorded meeting, or a section of a lecture you want to send to a colleague. This trimmer lets you cut out that part by entering the start and end second, then download it as a separate file without opening an editor.

It runs in your browser using ffmpeg.wasm and uses stream copy, meaning the picture and sound are copied as they are rather than re-encoded. That makes it relatively fast and keeps the original quality and format. Your video is not uploaded anywhere; only the processing library is downloaded the first time.

How to use it

1. Drag your video into the drop area or click to choose it.
2. Enter the second where your clip should begin in Trim start (seconds). The default is 0, the start of the video.
3. Enter the second where it should end in Trim end (seconds). The default is 10.
4. Click Trim & download, wait for the library to load the first time, and watch the progress bar.
5. The clip downloads with the same extension as the original and "-trimmed" added to its name.

What you control

• Start and end points in seconds, both measured from the beginning of the original video.
• If the end is equal to or earlier than the start, the tool moves it to one second after the start so the clip is never empty.
• If the end is beyond the video's length, the clip simply runs to the end.
• Audio and video keep their original codecs, and the container stays the same (an MP4 stays MP4, a MOV stays MOV).

Practical examples

• Cutting a short clip from a long recording so it fits a messaging app's file size limit.
• Removing the first seconds where you were setting up the camera by starting at, say, second 5.
• Pulling the answer to one question out of a lecture: if it starts at 12:30, type 750 as the start.
• Preparing a short segment before turning it into a GIF or extracting its audio.

Tips and notes

• Convert minutes to seconds first: minutes times 60 plus the seconds, so 2:15 becomes 135.
• Because nothing is re-encoded, cuts snap to the file's keyframes. The clip may start a fraction of a second early or late, and the first moment can look briefly frozen in some files. For a precise moment, start a second or two earlier.
• Large files are loaded fully into browser memory and may fail on devices with little RAM.
• One continuous section is cut per run; repeat the process for each extra part.

Once trimmed, turn the clip into an animation with video to GIF, pull out its sound with video to MP3, or brand it using video watermark.