Amazon Prime Video (amzn) does not officially provide 480p downloads. Their standard resolutions are 540p, 720p, 1080p, and 4K. A true "AMZN web-dl" in 480p means:
ISPs in India are legally required to block hdmovies4u domains, and many have also implemented (warnings followed by throttling or disconnection). While individual downloaders are rarely prosecuted, it is a risk. Amazon Prime Video (amzn) does not officially provide