If you only need to test apps, explore the interface, or develop for Android TV 12 without hardware, Google provides an through Android Studio. This is the closest legal equivalent to an "ISO."
Be extremely cautious of third-party websites offering "Android TV 12 ISO High Speed Download." These files are often bundled with malware or are simply modified versions of mobile Android that lack the actual TV interface and remote control support. Always stick to android.com for official files. Android TV emulator in Android Studio to test the interface? Android Tv 12 Iso Download