Netflix says that it has been producing content in the three major HDR formats since it debuted its series Marco Polo in 2014 and the company has about 11,000 hours of HDR material in its catalog.

This is because Netflix has traditionally supported Dolby Vision, another dynamic metadata HDR codec ... came around and added support, allowing playback on screens that support HDR10+ but ...

Netflix uses the AV1 codec for HDR content, and here's what Samsung has to say about this in a statement sent to TechRadar: "Netflix uses the AV1 high-efficiency codec for HDR10+ content.

HDR10+ is an innovative high dynamic range (HDR) technology developed by Samsung ... With Samsung’s latest announcement, Netflix viewers can now enjoy their favorite shows and movies in HDR10 ...

It can have quite an effect, here’s an example: Screen grabs from AV1 video: HDR10 • HDR10+ Note that only the Netflix Premium plan (the 4K one) offers HDR content. HDR10+ is a royalty-free ...