What's New in Adobe XD 2020 and 2021 | Adode XD updates

How can i compress a big file like 80 MB to below 20 MB file (MP4)?

Try using https://www.ps2pdf.com/compress-mp4 which is excellent for me. I used settings "45" in "Output quality and file size" .

For Offline i use "Media Encoder" from Adobe.

If you want free software which is open source, you can use this software HANDBRAKE