How to use Trim video
- Choose a video.
- Set start time and duration.
- Download the trimmed clip.
What this tool does
The video trimmer exports a shorter MP4 from a selected start time and duration. It helps remove dead air, mistakes, countdowns, or unused endings before sharing or compressing.
Trimming before compression is often the cleanest way to reduce file size because it removes seconds instead of lowering quality across the whole clip.
Supported formats and output
- Input
- Browser-readable video files.
- Output
- MP4 containing the selected time range.
Practical examples
Remove a countdown
Start at 8 seconds and export only the useful demonstration.
Prepare a GIF
Trim a longer MP4 to a short segment before converting it to GIF.
Quality considerations
- Trimming protects quality better than over-compressing a long recording.
- If you also need a smaller file, trim first and compress second.
Limitations
- Very large sources can exceed browser memory.
- Exact cut placement can vary by codec and encoding behavior.
- This tool is for simple start-and-duration trims, not multi-clip editing.
Frequently asked questions
Can I trim large files?
Browser memory is the limit. Start with short clips for best results, then add a cloud fallback later for very large files.
Is the trim frame-perfect?
This tool re-encodes for compatibility, which gives more accurate trims than simple stream copying.
Troubleshooting
The trim starts a little differently than expected.
Try adjusting the start time by a small amount. Video keyframes and re-encoding can affect the visible first frame.
The export takes a long time.
Shorten the selected duration or try on a device with more available memory.