First, by allowing non-tech savvy users to reduce the size of their video using recommended preset by The Shift Project (https://theshiftproject.org/en/article/unsustainable-use-onl...) without having to install and configure any software (it uses FFMPEG.WASM directly in the browser)
Second, by offering more radical ways to reduce the video file size.
The more extreme setting is to limit FPS to 1 image every 5 seconds, which is surprisingly well suited for conference videos.
For example, I reduced one of my video from 85 Mo to 15 Mo with these techniques (content is in French):
- original video: https://acailly.github.io/confs/developper-avec-utilisateur/...
- reduced video: https://acailly.github.io/confs/developper-avec-utilisateur/...
If you think of another original/radical technique to try, let me know :-)