MediaRecorder · Video Trimmer

Free Online Video Trimmer

Browser-based video trimmer that lets you pick start and end times and export the selected segment as WebM without uploading your original file.

Select video file

Select a video, preview it in the player, adjust the start and end times, then export the selected segment as a WebM clip. Everything runs locally in your browser.

Preview

Duration： -

Trim range

Start (seconds) End (seconds)

Selected segment： -

Export

Uses MediaRecorder to export WebM at roughly real-time speed. Some browsers or codecs may not be fully supported.

Tip: browser support for captureStream and MediaRecorder varies. If export fails, try the latest Chrome or Edge.

Subtitle Tools

Convert subtitle formats and fix timelines entirely in your browser, with UTF-8/GBK encoding support and no file uploads.

Video Compressor

Compress local videos to MP4 (H.264) with resolution, CRF and audio bitrate controls, all processed locally in your browser.

Video Format Converter

Convert local videos between MP4/WebM/MKV/MOV/AVI with configurable scaling, FPS, CRF and audio bitrate, all processed locally in your browser.

Video Player

Play local video files in your browser with speed, volume, loop and picture-in-picture controls, all processed locally with no uploads.

Video to GIF Converter

Convert local video segments to GIF with adjustable FPS and width, processed fully in the browser with no uploads.

Scientific Calculator

Perform everyday calculations and basic scientific functions directly in your browser with keyboard support and no data uploads.