720p (1280x720 pixels) was the "High Definition" standard of the era. While 1080p exists today, a high-quality 720p rip is often considered the "sweet spot" for older films, providing a sharp image without the massive file sizes associated with 4K.
Here's a step-by-step guide to downloading Fanaa 2006 in 720p HQ: Download - Fanaa 2006 720p Hq -3.46 GB-.mkv