Server Version#: 1.23.2.4656
Player Version#: 5.17.0 - Samsung 2016 to 2021 Televisions (Tizen 2.4, 3.0, 4.0, 5.0, 5.5, 6.0)
The quality of high resolution / quality photos (e.g. res: 6000x4000) displayed with the Samsung Tizen based App via my Samsung UHD TV QG75Q90T is very poor with (i.e. lot of artefacts), it looks like the jpeg images are transferred while being transcoded with very high compression. Displaying them via DLNA (not the Samsung Tizen App but the Samsung Hub integrated DLNA Client) works perfectly meaning the image transferred with original quality (no transcoding). The samsung integrated image viewer is able to process jpegs and image resolutions up to 15000x9000 by its own w/o the need to be reduced on servers side.
This behaviour by the plex server /plex client needs to be corrected since looking Photos via the Tizen based Plex app makes no fun and does not reflect the great capabilities of plex SW.
Btw. activating / deactiving bitrate limitation per image throws an error in the Plex Tizen App.
Plex scales your images to the resolution of the screen, so you will lose a lot of pixels. Plex is not the most appropriate way if you need to look at high resolution images.
could you explain the (technical) reasons behind it? i do not really understand, why Plex is scaling high res images to the resolution of the Plex client screen. Is it because Plex is using its own (Plex specific) UI elements e.g. for navigation (foreward, backward, pause, options, etc.), while displaying the images? This is the only case i could imagine why photos would need to be scaled to the resolution the client is actually running. This maybe also explains, why photos are displayed in original quality / size / resolution, when using plain DLNA (Samung DLNA Client) instead of the Plex Tizen App, right?
Solution: provide something like a “bridge” mode that streams/transfers the image information to the native Samsung visualization APIs. This would enable the usage of the client visualization capabilities - although the navigation elements could get lost.
Alternative: The photo encoder capabilities seem to be very poor meaning there is no option / possibility to change the encoding quality for photos. I assume the photos shown on screen are the photo saved in the Photo Transcoder Cache, right? Usually when resizing jpegs on PC (e.g. to the same size as an UHD TV) you can achive much higher quality than the Plex photo encoder is providing when displaying images on the Plex Tizen Client. Therefore provide an encoder quality option (like available in every jpeg converter - like a slider from 50%-100%).
Plex uses the TV’s built in photo renderer. AFAIK, this doesn’t allow zooming in or panning so there is no need to show more pixels than the resolution of the TV. It’s the same reason there isn’t a zoom/scale option when viewing videos. It just can’t be done.
The TV’s DLNA player does these things via software, not hardware, and in a way Plex can’t copy.
What do you mean quality? You mean the jpg compression level? Possibly since the scaling is done in PMS, but I don’t know if that would really help. You’re still getting a compressed jpg file.
yes i mean the compression level. The level seems to be extreme (meaning to much compression) since the images are showing lots of artifacts, which the original images do not show. Btw i played around with image resolutions. When converting the photos to UHD size (3840x2160) or HDTV size (1920x1080) the images show the same level of artefacts in Plex (the resized originals do not show any artefacts). It looks like even if the photos have native screen resolution it is very low quality (to much compression)… any suggestions?
Like i said - feature request: let the user decide about quality and make the compression level on server side configurable
