In video compression, chroma subsampling reduces the resolution of color information (chroma) while keeping full resolution for brightness (luma).

: For every four pixels of brightness, there are two pixels of color information. This provides twice as much color detail as the standard 4:2:0 format used in consumer streaming and Blu-rays.

: It is the preferred intermediate format for editors who need to maintain high fidelity during heavy color adjustments.

: Many professional cameras (like those from Sony, Panasonic, and Canon) and dedicated hardware encoders (such as the NVIDIA Jetson series ) natively support recording or encoding to 4:2:2 MP4 for high-quality data retention.

: This format is essential for color grading and green screen (chroma keying) work. The extra color data prevents "fringing" and allows for smoother color transitions without banding. Why Use b422.mp4?