What you can do
- MP4 and WebM are containers; browser and destination compatibility should guide the choice.
- Use Convert when the destination does not accept the source format.
- The source stays unchanged and the result is created as a new file.
Video Tools / Local
REFRAME VIDEOS.
KEEP THEM LOCAL.
Change aspect ratio, add letterbox bars, compress and convert video locally.Your input never leaves this browser.
StartProcessing… Video tools
Tool guide / ONLY MY KIT
Convert video formats in your browser
Choose MP4 or WebM, frame rate and audio options, then encode with local WebAssembly FFmpeg.
How to use it
- Select the video to convert.
- Choose MP4 H.264 or WebM VP9 output.
- Set frame rate and audio options.
- Create and download the converted video.
FAQ
Frequently asked questions
When should I use this tool?
Use Convert when the destination does not accept the source format.
Is the source sent to a processing server?
No. Supported conversion for this tool runs in the current browser.