Why the emby photo album Resolution very low?

[Luke 42077]

On 1/24/2025 at 3:05 AM, ruedi said:

Hi Luke - don't open it in edit mode!

Not sure what Microsoft is doing here but "edit" mode is different to simple displaying.

When I open the picture to display -> colors are right

When I open the picture in edit mode -> colors are wrong

 

This is a MS feature: https://answers.microsoft.com/en-us/windows/forum/all/photos-changing-colour-after-editing-in-microsofts/96de6304-fc8c-4aa8-9a71-a04ce4d82a65

 

regards

Rüdiger

I think your issue is different from this topic because your issue is not about resolution being low but rather colors being off. We will be updating our graphics processing libraries as part of the 4.9 release so hopefully that will help with this.

[thelittleblackb 6]

On 2/3/2025 at 4:25 AM, Luke said:

I think your issue is different from this topic because your issue is not about resolution being low but rather colors being off. We will be updating our graphics processing libraries as part of the 4.9 release so hopefully that will help with this.

Hi,

is this topic considered solved?

regards

 

[ruedi 5]

HI - currently waiting for the release (at least a new beta :))

[ruedi 5]

Just made a short test on beta 38 (did not recognize it before).

When displaying in full resolution - everything is fine.

As soon as the scaler is working - same as before.

[ruedi 5]

Hi Luke - I think I catched the main issue now ...

When exporting my photos from Lightroom I typically use the ProPhoto RGB color space.

Putting this through the resizer will lead not only to new borders it finally influences the color space, too.

From what I saw in the meanwhile, the EMBY resizer is transforming the color space from ProPhoto RGB to sRGB which finally leads to the loss of color quality, depending on the algorithm which is used to reduce the colors. Typically the color numbers wont match in this case (two times reduced colors) and the result is a bad picture quality.

To prevent from such questions (like from me) it would be great if you could push your colleagues to state in the documentation about the supported color space for photos.

This is the same reason for the Windows 11 "Photo Viewer"-Effect: opening the picture is fine (the viewer can display the ProPhoto RGB) but editing results in a real bad result. Reason: "Photo Viewer" can only use sRGB for editing a picture. We talked about this problem before.

Not sure if you really can do something here - except document what is possible. I did now two independent exports one for EMBY one for further use

An export to JPEG or PNG with the extremely restricted sRGB leads to acceptable (not brillant :)) results. Having a bit more colors would be great ...

best regards

RUE

[Luke 42077]

Hi, thanks for investigating and discovering that. We'll take a look at it. Thanks.