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Noob here with weird problem regarding DolbyVision transcoding. - Printable Version

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Noob here with weird problem regarding DolbyVision transcoding. - daspunner - 2025-04-21

Hi y'all!

I am trying to transcode DolbyVision-content to SDR. In Jellyfins own webplayer they look right but in Kodi with the Jellyfin addons they look green/pink/purple.

Server and client are on the same machine due to the lack of real HDR/DV-support on the display. Transcoding are done through a RTX3060.

Sidenote: HDR-content transcoded with Jellyfin works with Kodi but not DV.

Any ideas?


/Dave


RE: Noob here with weird problem regarding DolbyVision transcoding. - pxr5 - 2025-04-21

What Dolby Vision Profile is the the file you are playing back? As for Kodi it has a setting under Video Processing (Settings - Player - Videos - Dolby vision compatibility mode) - set to yes, will convert Profile 7 to 8.1 for better compatibility. Also in Video Processing there is a setting to choose what HDR type is allowed - HDR10/DV.


RE: Noob here with weird problem regarding DolbyVision transcoding. - TheDreadPirate - 2025-04-21

Is Kodi configured to locally tone map? What you've described tells me this is a Dolby Vision profile 5 video.


RE: Noob here with weird problem regarding DolbyVision transcoding. - daspunner - 2025-04-21

Yes it is DV profile 5. So the problem is in Kodi? I think so too. Even the Jellyfin-client on my Android shows correct colors.


RE: Noob here with weird problem regarding DolbyVision transcoding. - pxr5 - 2025-04-21

In Kodi Both jellyfin-kodi and jellycon have options in the config to transcode. Kodi itself can't transcode anything.


RE: Noob here with weird problem regarding DolbyVision transcoding. - daspunner - 2025-04-21

(2025-04-21, 04:37 PM)pxr5 Wrote: In Kodi Both jellyfin-kodi and jellycon have options in the config to transcode.  Kodi itself can't transcode anything.

Are we talking of Kodi in Windows now? Checked both addons and I can't find any setting for transcoding.


RE: Noob here with weird problem regarding DolbyVision transcoding. - daspunner - 2025-04-21

Never mind! I found it!

The videos are a little dark tough. Nothing I can't fix with brightness setting in Kodi but can adjust something so the transcoded streams are brighter from start? Transcoding settings in Jellyfin server perhaps?


RE: Noob here with weird problem regarding DolbyVision transcoding. - TheDreadPirate - 2025-04-21

Did you change any of the transcoding settings for tone mapping? By default the output of a tone mapped transcode should be pretty close in brightness to a native SDR video.


RE: Noob here with weird problem regarding DolbyVision transcoding. - daspunner - 2025-04-21

No I did not change any parameters regarding transcoding. Since I know so little about transcoding I just followed the guide stating that best setting for new users was to set algorithm to BT.2390.

Are there any places that I could read a little bit more about Jellyfin and transcoding? Their documentation is very basic.


RE: Noob here with weird problem regarding DolbyVision transcoding. - TheDreadPirate - 2025-04-22

Fiddled around with some settings and couldn't find a way to reliably increase brightness that did make it worse for other content.