Revisited the Amlogic Super Scaler and for my current setup and my viewing situation, I have found that activating the super scaler does improve the sharpness of the TV picture. In particular, I find the “long distance” scenes to be noticeably sharper, such as a distant shot of a forest where the greenery appears sharper etc. I am viewing from around 7 feet away. So far, I have not noticed any negatives when viewing from a normal distance.
My set up is a 43 inch budget Toshiba 4k HDR TV (gives a very acceptable picture), CoreELEC Nexus (latest alpha) running on a S905x2 box (x96 Max) with 4GB ram and 32GB internal storage. GUI is set to 1080p/60Hz. I have all the available viewing resolutions whitelisted, so for example, in my case the 720p/25Hz videos are output to the TV at 1280x720p resolution at 50Hz. It’s my understanding that with this setup, my TV is doing the upscale from either 720p or 1080p to 4k. Does anybody know how the super scaler operates in this scenario? Is it a sharpening algorithm that is applied to the video before the TV upscales it, or does it apply the sharpening after the TV has upscaled? Any info appreciated as I could not find much info on the feature.
Just to remind anybody who wishes to try out the Amlogic super scaler for themselves, create or modify an “autostart.sh” file and place it in the “.config” folder. The source code to add is:-
echo 1 > /sys/module/amvideo/parameters/super_scaler
I understand that some people may not like the sharpening effect, but it’s easy to try out. I did also test my animation videos and other titles such as Avatar, and they all looked fine.