Compression (H.264 vs H.265): Storage size is dictated by your Bit Rate, not compression. A 4096 Kbps stream takes up the exact same amount of space whether it's H.264 or H.265. However, H.265 is so highly efficient that it allows you to safely cut your Bit Rate in half while maintaining the exact same video quality, effectively doubling your storage capacity.

Frame Rate (FPS) and The Pizza Analogy: Think of your Bit Rate as a whole pizza, and your FPS as the number of slices you have to cut it into every second. If you drop your FPS from 30 down to 15, you are asking the camera to do half the work. This allows you to cut your Bit Rate in half (saving massive storage space) while keeping the individual images perfectly sharp. In the security industry, 15 FPS is the standard "sweet spot" because it flawlessly captures human motion without needlessly wasting hard drive space.

The "Sweet Spot" (Why 4096 Kbps for 4K?): 4K video contains over 8 million pixels. If you set your Bit Rate too low, those pixels are "starved" for data, resulting in a blocky, blurred image during movement. Selecting 4096 Kbps alongside H.265 compression at 30 FPS is the industry sweet spot—it provides just enough data to keep 4K video perfectly crisp. (Older H.264 compression would require double the data—8192 Kbps—for the same quality).

CBR vs VBR: CBR (Constant Bit Rate) uses a fixed amount of data continuously. It is predictable and guarantees high image quality, making it ideal for busy areas. VBR (Variable Bit Rate) lowers data usage when nothing is moving, making it great for saving space in quiet areas (like empty hallways). However, VBR is a poor choice for high-motion scenes—constant movement maxes out the data limits anyway, and sudden bursts of action can cause "ghosting" or pixelation exactly when you need a clear image.