Why the emby photo album Resolution very low?

[sa2000 227]

15 hours ago, woofstream said:

Alright, for some reason I did not have luck finding the cached photo in the log file but here's what I have instead. Please let me know if it's sufficient.

Thanks for the detail. So in your test a 7008 (W) x 4672 (H) pixel photo was displayed as 2561 (W) x 1707 (H) . I would not call this very low resolution - which is what the subject of this forum topic is. In my test, the output was similar to yours - displayed as 2673 (W) x 3564 (H). 

The issue you are reporting is that for very high resolution photos, emby clients are not displaying the photos at the original quality or close to it - in my case it was about 88% - in your case with the original being 7008 x 4672 it was only 36%

Would like @Luketo give his input on this and what determines what the maxWidth value should be in this request 

"GET /emby/Items/xxxxxx/Images/Primary?maxWidth=xxxx"

With regards to the log and the extract you picked, is there a cache folder under "W:\EMBY\Emby-Server\programdata". There would be the following subfolder path under cache - 

"images\resized-images" - Are there any log lines referencing "images\resized-images" ? Debug logging would need to be enabled beforehand.

Edited August 1 by sa2000

[woofstream 4]

Firstly, thank you for your patience in discussing this. I really appreciate it.

5 hours ago, sa2000 said:

Thanks for the detail. So in your test a 7008 (W) x 4672 (H) pixel photo was displayed as 2561 (W) x 1707 (H) . I would not call this very low resolution - which is what the subject of this forum topic is. In my test, the output was similar to yours - displayed as 2673 (W) x 3564 (H).

I suppose, yeah.

Technically it's not very low resolution, but relative to the original file it would seem to be. A lot of the finer details are lost and the photos honestly become unpleasant to look at. Besides the satisfaction of just viewing photos I took, I was hoping to download from emby onto my phone or tablet while I'm out of the house so I could do things like editing or sending to friends/family easily, without having to burn a large hole in the storage of my devices.

6 hours ago, sa2000 said:

The issue you are reporting is that for very high resolution photos, emby clients are not displaying the photos at the original quality or close to it - in my case it was about 88% - in your case with the original being 7008 x 4672 it was only 36%

Would like @Luketo give his input on this and what determines what the maxWidth value should be in this request 

"GET /emby/Items/xxxxxx/Images/Primary?maxWidth=xxxx"

As long as the server and client are powerful enough to display such a large photo without fuss, it would be nice to have a button that puts it at 100% quality. Or maybe even an option in the server settings to disable any quality reduction at all, which is good for people in my situation where they are the only ones that have access to the photo library and their client machines are more than capable.

6 hours ago, sa2000 said:

With regards to the log and the extract you picked, is there a cache folder under "W:\EMBY\Emby-Server\programdata". There would be the following subfolder path under cache - 

"images\resized-images" - Are there any log lines referencing "images\resized-images" ? Debug logging would need to be enabled beforehand.

Yes, I have the folders. Here's the log line for the example image:

2024-08-01 07:28:39.784 Debug ImageProcessor: Image encoding using Skia to W:\EMBY\Emby-Server\programdata\cache\temp\4631ccb37b904300bc8b1740e75bdecf.jpg took 233ms for W:\EMBY\Emby-Server\programdata\metadata\library\ca\caef185f84e6af387d60ad1cef7ab351\imagecache\DSC01040.JPG. Now moving to W:\EMBY\Emby-Server\programdata\cache\images\resized-images\e\e53ff5f3-c1fb-fdfb-2efd-1e469413f147.jpg

 

[Neminem 622]

I guess, as long you are self-hosting try this instead.

Quick Start | Immich

But that will not solve you Emby issues.

Edited August 1 by jaycedk
adding

[woofstream 4]

That's a solid suggestion, I got it setup yesterday but for the life of me I cannot figure out how to mount my network storage to the docker container.

I keep my media on a QNAP NAS and use an Intel NUC with Windows as a server, and apparently that's a bit of a painful combination for this. I should probably just keep trying though, what with it being a tailored experience for photos and all. Or perhaps just host it directly on the NAS whenever I manage to upgrade its RAM.

Thank you for the suggestion.

Edited August 1 by woofstream
forgot to say thanks

[ruedi 3]

Hi - Emby is using SKIA to resize all your photos to the reported resolution of your end device.

This can make sense if the transmission speed is restricted, but not when you are in you local LAN.

I try since many years to convince them to change this behaviour but nothing happens.

Photos are displayed in a poor quality.

The nice Emby is for video (here you can switch transcoding off) the bad it is for viewing photos.

Wondering if Jellyfin is doing that better ...

best regards

Rüdiger

[Luke 38560]

There's two reasons for the resizing. One being network performance. The other being that many devices like Roku and Smart TVs just can't render massive images.

[ruedi 3]

Hi Luke - yes, I understand very well!

But the resulting quality is worse. The compression way too high. Resizing operate very well, but the number of used colors decreases extremely.

Foe the user all the colors appear in a wrong way. I told you multiple.

Thats why I requested the option to switch this feature off. For video there is the feature to simply stream and it should possible to configure this for pictures, too.

Is there a configuration option, even when it must set manually in a config file whichballows to switch SKIA conversion off, or to allow 100% quality.

Thanks again

Rüdiger

[Luke 38560]

47 minutes ago, ruedi said:

Hi Luke - yes, I understand very well!

But the resulting quality is worse. The compression way too high. Resizing operate very well, but the number of used colors decreases extremely.

Foe the user all the colors appear in a wrong way. I told you multiple.

Thats why I requested the option to switch this feature off. For video there is the feature to simply stream and it should possible to configure this for pictures, too.

Is there a configuration option, even when it must set manually in a config file whichballows to switch SKIA conversion off, or to allow 100% quality.

Thanks again

Rüdiger

Hi, can you please show an example of what you mean? Thanks !

[ruedi 3]

Easy ....

left is the output of EMBY Theater, right Lightroom (6099x4066 Pixels@240 dpi, Adobe RGB).

best regards

Rüdiger

[Luke 38560]

On 11/1/2024 at 8:16 AM, ruedi said:

Easy ....

left is the output of EMBY Theater, right Lightroom (6099x4066 Pixels@240 dpi, Adobe RGB).

best regards

Rüdiger

Hi yes that is a big difference. We have a new Windows app set to launch very soon, so stay tuned for that and let us know how this example compares with it. Thanks !