Converting Dolby Vision to HDR10

[TheDreadPirate]

Correct. This is only meant for profiles 7.6 and 8.1.

For profile 5 there is no "fallback". Profiles 7 and 8 are built on top of HDR10. If a TV does not support those Dolby Vision profiles it will "fallback" to HDR10.

Profile 5 is not built on top of another HDR standard. It is its own proprietary color space.

If you have a capable Jellyfin server that supports HEVC 10 bit, Jellyfin will tone map your profile 5 video to SDR on-the-fly.