You are on Windows and want a dedicated download manager, you need to batch download entire playlists, or you require conversion and high-speed multi-threading.
Ant Video Downloader is primarily a browser extension (Firefox/Edge) that historically used an optional native companion app (“native app” or NA) to download and merge segmented streams (HLS/DASH) and to enable features the extension alone can't do. Development and compatibility have varied over the years; some pages note the extension is discontinued or that the native app is optional/disabled by default. Below is a practical, security-minded guide for using or replacing the native-app workflow in 2026.
The Ant Video Downloader Native App is a critical bridge for modern browser security. Browsers like Firefox and Chrome have restricted how extensions interact with your computer's hardware. The Native App solves this by handling the heavy lifting of video processing and file saving directly on your operating system. Why You Need the Native App
: Extensions on stores like Mozilla Firefox may have the native app feature disabled by default due to strict privacy and security policies. Mozilla Support Recommended Action your add-on Ant Video Downloader does NOT work! Why?