About Video Trimmer
Trimming is the most common video edit there is: cut the shaky start, drop the rambling ending, keep the thirty seconds worth sending. Desktop editors make it feel heavier than it is, and phone editors usually re-share the clip at whatever resolution the app prefers, which is why a browser tool that only removes time is genuinely useful.
This trimmer shows the clip in your browser, lets you pick the start and end with two handles, then sends the chosen range to FFmpeg on our server. The cut is accurate because the selected section is decoded and re-encoded rather than copied blindly, and the output keeps the original frame size in a standard MP4 with H.264 video and AAC audio.
What this tool does
See the clip before cutting
A browser video preview plays the file you selected, so you can find the moment you want without guessing timestamps.
Two time handles
Drag the start and end sliders (or type exact seconds) and the selected length updates as you go, with validation before the job starts.
Manual times for odd containers
Some containers, such as MKV in many browsers, cannot be previewed; the tool then asks for start and end seconds and still cuts the file on the server.
Accurate server-side cutting
FFmpeg seeks to the selected point and re-encodes the range, so the cut lands where you asked instead of at an arbitrary keyframe.
Resolution and audio kept
The output keeps the source frame size and includes the first audio track re-encoded to AAC, ready for phones, browsers and messaging apps.
Temporary files only
The uploaded video and the trimmed clip are held in a temporary folder and deleted automatically after the download.
How to use Video Trimmer
- 01
Upload the video to trim
Drop an MP4, MOV, MKV, WebM, AVI or another supported video into the workspace. The limit is 100 MB.
- 02
Set the start time
Play the preview, then drag the start handle to the moment where the clip should begin. Exact seconds can be typed if you know them.
- 03
Set the end time
Drag the end handle to where the clip should stop. The readout shows the selected length before you commit.
- 04
Trim and download
Click Trim video, wait for the server cut to finish, preview the result and download the MP4.
Supported formats and limits
- Input
- MP4MOVMKVWebMAVIM4VWMVMPEG3GP
- Output
- MP4
- Processing
- Server-side FFmpeg job in a temporary directory, deleted after download.
- Maximum size
- Up to 100 MB
- Requirements
- Chrome, Edge, Firefox or Safari · Server-side FFmpeg conversion
Limitations worth knowing
- Trimming always re-encodes, so there is one small generation loss and no lossless stream-copy mode.
- The selected clip can be at most 15 minutes long and the upload at most 100 MB.
- Subtitles and extra audio tracks are dropped; only the first video and first audio streams are kept.
- HDR and Dolby Vision sources are converted to standard SDR color, and browser preview is not available for every container.
Privacy and file handling
The video is uploaded to a temporary directory on our server, trimmed with FFmpeg, and streamed back as a download. The upload and the finished clip are deleted automatically when the download completes; no copy is stored permanently or shared with third parties.
Read the full privacy policy