Finding a standalone file is tricky because Android TV is typically distributed as specific firmware (ROMs) for hardware like sticks or boxes rather than a generic installer for PCs.
Official streaming apps like Netflix, Prime Video, and Disney+ require strict digital rights management (DRM) certifications (Widevine L1). Because a custom-built PC or Raspberry Pi lacks these hardware-level certifications, you will often be restricted to standard definition (480p) playback, or the apps may refuse to install entirely.
If you are looking for an ISO to "fix" or update an existing Android TV box, you actually need a (often a .img file) specific to your device's chipset (like Allwinner or Amlogic), not a generic ISO.
Instead of installing from an ISO, you create a new virtual machine in VirtualBox and point it to the downloaded virtual hard disk.
: Keep Windows for work and switch to Android TV for movies. Dedicated Install : Wipe an old PC and make it a permanent media center. Where to Find the Best Versions
The search for an file is a common journey for tech enthusiasts looking to revive old hardware, set up a virtual machine, or build a custom media center. However, if you are looking for a standard, official .iso installer like you would use for Windows or Linux, you will quickly run into a few technical roadblocks.