Compress a video on client side web [closed]

Answer 1

No. No browser offers a video encoding API, for JavaScript to tap into. Perhaps one day there will be an official MediaEncoding API - wouldn't that be something?!

Answer 2

I found this project. It is a conversion of FFMPEG decoder in javascript language. So you can use it to work images, video and audio files without upload file to server.

Homepage: https://bgrins.github.io/videoconverter.js/

GitHub: https://github.com/bgrins/videoconverter.js

I have not tried yet, but the demo page says that it works: https://bgrins.github.io/videoconverter.js/demo/