COMPRESS / LOCAL
Smaller video.
Your quality target.
Reduce video size with precise format, quality, resolution and audio controls. Your source never leaves this tab.
Choose a video, select a compression strategy, then download the result. The FFmpeg engine runs entirely in your browser.
No video uploadsOutput and compression
Broad input support, five practical outputs
Video and audio
Optional trim times accept seconds or HH:MM:SS.
MP4 · WebM · MOV · MKV · AVI · MPEG · M4V · 3GP · OGV · FLV and other FFmpeg-readable video
OUTPUTMP4 · WebM · MOV · MKV · AVI
PRIVACYThe selected video and compressed result remain on your device.
FREE TO USE / NO ADS / NO LOGIN REQUIRED
Reduce video file size online without uploading
Compress common video formats locally with quality, target-size, resolution, frame-rate, audio and trim controls.
- Compress multiple video input formats to MP4, WebM, MOV, MKV or AVI
- Choose constant quality or an approximate target file size
- Adjust resolution, frame rate, encoding speed, audio and trim range
- Process source and output video locally in the browser
Choose a video, select an output format, then compress by visual quality or approximate target size. Optional controls cover resolution, frame rate, encoding speed, audio, trimming, metadata and fast-start playback. Browser memory limits the practical source size.
How to compress an MP4 or other video
- Choose your local video and select an output format such as MP4 or WebM.
- Start with a quality setting, or choose an approximate target file size. Lowering resolution or frame rate can reduce size further.
- Keep useful audio or remove it, then run compression and compare the result before sharing.
A smaller file can lose visual detail. Target size is approximate, and long or high-resolution videos may exceed the memory available to your browser.
Popular ways to use Video Compressor
- Reduce an MP4, WebM, MOV, MKV or AVI file for sharing or storage
- Compress video toward a target file size or use a visual quality setting
- Resize video resolution, change frame rate, remove audio or trim before export
- Shrink a video for email or sharing while checking quality.
- Choose an approximate output size for a supported format.
How processing and privacy work
Video compression runs in your browser using a locally loaded FFmpeg WebAssembly engine. Your source video and compressed result are not uploaded to GOATiM or another processing service.