内容介绍

VCB-Studio 新一轮积分制度开番提名开始了：http://bbs.vcb-s.com/thread-5057-1-1.html
请注意，积分制度，是组外观众向我们提名番剧制作的唯一途径。

银之匙 / Gin no Saji / 银の匙 S1 + S2 BDRip
10-bit 720p HEVC + FLAC，MKV 格式。每话约 700 MB。

《银之匙》的蓝光画质中等，全篇为 720p 的原生分辨率，拉升到 1080p 的过程中引入了少量锯齿和晕轮，整个画面显得较为模糊，缺乏细节，线条周围有一圈细碎的网格状瑕疵。考虑到全篇除了 staff 和 logo 外没有任何全高清的有效信息，这里我们选择了针对原盘的缩放方法，逆向回 720p 进行压制。逆向过程可以消除因为拉升带来的种种问题，还能有效节约体积。原盘也有一些轻微的色带，我们针对性地做了修复。

因为主分辨率做了降低，为了保留预处理后的颜色信息，本片使用 YUV 4:4:4 编码。

下图的对比图，使用的是 non-ringing Lanczos 4 算法，模拟一般播放器的播放效果，放大到 1080p，与原盘对比。

The quality of the original source sits on the average. The native resolution is 720p, and while upscaling to 1080p, a few aliasing and ringing artifacts were produced, which make the image looks blurry and lacks details; also the lines are surrounded by loose and latticelike artifacts. Considering that the source has no full HD contents except staff lists and the logo, we decided to downscale to 720p for encoding. The process of downscaling can eliminate many kinds of artifacts caused by upscaling, and it saves bit-rate as well. Besides, we also applied de-banding.