Encoding Note:

The BluRay source quality is very nice with original FHD drawing, but it also features very heavy film grain and some slight aliasing. We performed a bit anti-aliasing to fix the edge issues, then we did an adaptive denoise, to preserve the visual similarity between source and encode while reducing the bit-rate.

By testing, x265 is not suitable for this project with its weakness in dealing with heavy grain sources, so we used x264 which turns out to be the better choice.

Comparison (right click on the image and open it in a new tab to see the full-size one)
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