This fails on KVS V6 players that use token expiration. If the download takes longer than the token's validity (e.g., 2 minutes), the segments will fail halfway through.
A simple first step is to use a Firefox browser extension like . Since many KVS players block the right-click menu to prevent direct 'Save As' actions, this extension can restore that functionality. Once installed, visit the page with the video, right-click on it, and see if a "Save Video As..." or similar option appears in the context menu. How To Download Videos From Kvs Player V6-
Extract the .m3u8 master link using the Developer Tools method described in Method 1. This fails on KVS V6 players that use token expiration