480x576

480x576 is a digital image or video frame size defined by a width of 480 pixels and a height of 576 pixels. It is commonly associated with standard-definition video in PAL-region systems, where 576 lines contribute to the vertical resolution of the signal. When the frame uses square pixels, its native display aspect would be 480:576, roughly 5:6, but many pipelines apply a pixel aspect ratio to map the frame to standard display proportions such as 4:3 or 16:9.

In practice, 480x576 frames are often encountered as cropped, scaled, or downsampled variants of broader SD formats like 720x576 or 704x576. The exact display aspect depends on the pixel aspect ratio defined by the container or codec, so the same resolution can represent multiple target aspect ratios depending on how it is encoded and played back.

From a data perspective, an uncompressed 8-bit RGB frame at 480x576 would be approximately 0.87 megabytes, while formats using chroma subsampling or compression (such as YUV or MPEG) reduce the storage required per frame. The resolution is frequently used in video processing, archival workflows, and certain embedded or streaming pipelines, especially when working with legacy PAL material or when downscaling is required.

Historically, PAL SD video commonly used 720x576 or 704x576 as standard framing sizes; 480x576 may appear when content is cropped, remapped, or converted for specific processing or display needs. Today, it remains a niche size, primarily seen in legacy material or specialized workflows.