What is the best way to download 4K videos to an iPad?

Hi, I have a M1 iPad Pro 12.9". I want to not only watching but also downloading the videos in 4K. What is the best way to do it? In the past there were websites which accepted urls and auto converted and saved the videos. However, recently those websites became doggy so I am looking for a safer

What is the best way to download 4K videos to an iPad

How to download (and remove) movies and TV shows on your iPhone

3 Ways to Rip Movie DVD to iPad on Mac and Windows

4K Downloader for iPhone and iPad

Share photos and videos on iPad - Apple Support

List of 4K Video Playing and Recording Phones and Tablets

Ipad Videos, Download The BEST Free 4k Stock Video Footage & Ipad

Clear the Clutter: How to Free Up Space on Your iPhone or iPad

8 Best 4k Video Editing Software for Top-Quality Content (2023)

Wireless hdmi Display dongle Adapter 1080p Direct