Bad quality chroma upscaling with new kernel

djnice · March 31, 2018 at 10:36 AM

8.90.3:

8.90.6:

Test video: [link]

Please fix it, if possible.

2re · March 31, 2018 at 11:35 AM

I have a h265 version off this file, and that one works ok, But the h264 is "bad".

"echo 1 > /sys/module/di/parameters/bypass_all" seems to fix the problem, but might cause new ones.

djnice · March 31, 2018 at 12:11 PM

The h265 version is not from the original Spears & Munsil disc. The reencoding affects the chroma subsampling.

**The Coolest** · March 31, 2018 at 12:15 PM

I just confirmed what 2re said with your video on my S905W box.

The changes can be observed on the fly.

2re · March 31, 2018 at 12:53 PM

Quote from djnice

The h265 version is not from the original Spears & Munsil disc. The reencoding affects the chroma subsampling.

That may be so, but the h265 is my own reencoding from the original.

GDPR-2 · April 1, 2018 at 4:21 AM

The deinterlacing can be turned off in the community options in video settings, same as doing the echo command.