Transcoded MKV (4k HEVC -> 1080p H264) introduces "subtle" green hue

[Nauclerus 1]

As the title states, transcoding a 4k movie in HEVC to 1080p in H264 introduces a strange green hue on any movie I've tried. Following are a few of the scenes in Oppenheimer where it's most apparent in the opening scenes:
Original Direct Play:

 

Transcoded 1080p using NVENC with Software Tone mapping:

 

Transcoded to H264 using NVENC with NVENC Tone Mapping:

 

 

I'd like to ask if the minimal difference between the two uppermost images are what's responsible for the huge disparity of the last image.

As you can see a very faint green hue is introduced when one goes from Direct Play to Trancode + Software Tone mapping. This color change then gets blown out by the Hardware Tone Mapping in the last image. Is this a known issue? Anyone else had this happen to them?

Edited June 29, 2024 by Nauclerus
Corrections

[Luke 42077]

 

Hi there, let's look at an example. Please attach the information requested in how to report a media playback issue. Thanks!

 

[Sammy 790]

Emby doesn't currently transcode Dolby Vision.

[Nauclerus 1]

2 hours ago, Sammy said:

Emby doesn't currently transcode Dolby Vision.

I tought this might be the case, but all examples I've seen of DV erronious transcoding add a very obvious filter, not this subtle filter

[Nauclerus 1]

3 hours ago, Luke said:

 

Hi there, let's look at an example. Please attach the information requested in how to report a media playback issue. Thanks!

 

I'll add logs and further examples later when I get the time.

[Luke 42077]

On 6/29/2024 at 2:37 PM, Nauclerus said:

I'll add logs and further examples later when I get the time.

Hi, that would be great. Thanks !