Video Converter
Change the container or codec of a video using your browser's built-in encoders.
Processed in your browser · nothing uploaded
How it works
- 01
Choose a video from your device. It is read locally; nothing is sent anywhere.
- 02
Set the options — range, format or quality — and press Run.
- 03
Download the result. Cutting and muting copy the original streams and finish in seconds.
About this tool
When the target container can hold the source streams, the conversion is a fast copy. Otherwise the video is re-encoded with WebCodecs — hardware-accelerated in Chrome, Edge and Safari. Firefox has fewer encoders and may refuse some targets; the tool tells you instead of producing a broken file.
Questions
- Which video formats work?
- MP4, MOV, WebM and MKV. AVI, WMV and FLV are not readable in a browser yet; convert them on your computer first.
- Is the quality reduced?
- Trim and Mute copy the original video packets, so quality is identical. Convert and Compress re-encode using the codecs built into your browser.
- Why is there a size limit?
- Files up to 500 MB are free; browser memory is the real ceiling. Plus raises the limit to 4 GB.