Wide gamut HDR, or wide color gamut HDR, is a type of high dynamic range (HDR) content that uses a larger color space than standard HDR formats. This allows for more accurate and richly colored video content, which can help to create striking visuals and immersive viewing experiences. At the same time, it is important to note that wide-color gamut content can be more demanding in terms of processing power and editing tools, so it is important to use a video editor like FCP that supports this standard.