HDR Media Capabilities

Image HDR support coming to Firefox?

MediaCapabilities? implementations are missing features needed to check for feature/playback support on a variety of platforms.

Example use-case

  • Badging for DolbyVision? profile 8 metadata usage requires decodeInfo to expose whether `hdrMetadataType` that maps to HLS SUPPLEMENTAL-CODECS attribute is supported (vs ignored).

Should issue be filed here https://github.com/w3c/media-capabilities/issues ?