4K8K

4K8K is a marketing shorthand used to describe ultra-high-definition video formats across 4K and 8K resolutions. In consumer electronics, 4K commonly refers to 3840×2160 pixels (UHD-1), with some cinema workflows using 4096×2160 (DCI 4K). 8K refers to 7680×4320 pixels (UHD-2). The term signals devices and content that support both 4K and 8K formats and their respective capabilities.

Standardization and technology associated with 4K and 8K have evolved to handle higher bandwidth, color, and frame rates. 4K gained broad consumer adoption through HDMI 2.0 and newer, enabling 4K at 60 Hz with HDR. 8K relies on HDMI 2.1, which offers higher bandwidth for 8K at 60 Hz or 4K at 120 Hz, along with features such as Variable Refresh Rate and Enhanced Audio Return Channel. Video content is typically encoded with HEVC/H.265, with increasing use of AV1 for streaming. HDR formats include HDR10, HDR10+, Dolby Vision, and HLG, expanding brightness and color ranges.

Content and devices for 4K8K vary in native resolution and availability. Native 8K content remains limited, and many 8K displays rely on upscaling from lower resolutions. 4K content is widely available through streaming services, UHD Blu-ray discs, gaming consoles, and broadcast. When evaluating 4K8K devices, consumers should consider the display’s native resolution, upscaling quality, color gamut, and the available input bandwidth (HDMI) to ensure compatibility with desired formats and sources.

In summary, 4K8K denotes an ecosystem aimed at delivering both 4K and 8K experiences, with practical use governed by device capabilities, content availability, and transmission standards.