Apple’s 1080p downloads are among the highest-quality legal downloads available. They use the H.264 codec with a higher average bitrate (up to 8 Mbps). Plus, when you buy from Apple, you automatically get a 4K upgrade if the title is later remastered.
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if you’re organizing your own media library (e.g., for Plex or Jellyfin). when you buy from Apple
Amazon’s “HD” download is a 1080p stream compressed to roughly 4-6 Mbps. However, you can download a local copy through the Prime Video app for offline viewing. The bitrate is lower than a true BluRay, but for casual viewing, it rivals a good 720p encode. but for casual viewing