You can install Ant Video downloader from official Microsoft EDGE Add-ons
website here:
You will be also forwarded to this page in case if select Install for EDGE button at the AVD banner on ant.com website here:
You can install one of previous AVD versions from ant.com archive here: https://archive.ant.com/msedge/
Download Ant Video downloader for Microsoft Edge by selecting Save Link As... on desired AVD version.
Extract contents of .zip file into a directory where Ant Video downloader will reside
Go to Edge menu ⋯ — Extensions or open web page edge://extensions/
Enable Developer mode (the switch is on bottom left)
Click on Load unpacked button
Navigate to directory with Ant Video downloader that you previously extracted, and click on Select folder button
Note: Do not delete the Ant Video downloader folder defined in step 1, otherwise the extension will not be loaded.
By default, Ant Video downloader is disabled InPrivate mode. If you would like to use Ant Video downloader InPrivate mode, select option Allow InPrivate on extension's Details page.
After you installed the browser extension, you need to download and install the Native Application.