Home / Video Tools / Trim Video
Trim Video
Set in and out points, download the clip.
MP4, WebM — files your browser can play
Trim uses MediaRecorder to re-capture the video segment. Quality matches the original. Large files take longer.
How browser-based trimming works
The browser plays the video internally from the start point to the end point while MediaRecorder captures the output. This is slower than a native tool but requires no software to install and no file to upload.
For precise cuts
Use the video preview player to find the exact timestamps you need — just hover over the progress bar or pause and step through frames. Then type those seconds into the start and end fields.
Output format
The output is in WebM format (VP8/VP9 video + Opus audio), which is what the MediaRecorder API produces natively. All major browsers and most video editors open WebM without issue. If you need MP4, convert the result with a tool like HandBrake.
Frequently asked questions
Will this reduce quality?
MediaRecorder re-encodes the video, which means a very small quality loss compared to the original. For most purposes the result is visually identical.
Can I trim an MKV or MOV file?
Only if your browser can play it natively in the video tag. MP4 and WebM work reliably everywhere.
The output is WebM, I need MP4.
WebM is the native output of the Web MediaRecorder API. To convert to MP4, drop the WebM file into a tool like HandBrake or CloudConvert.
What is the maximum file size?
There is no hard limit, but large files are loaded into memory. On most devices, files under 1 GB work fine.