原盘画质一般,原生分辨率 720p 。相当一般的厕纸,制作也没用心。线条比较糊,还有不少拉伸锯齿。平面质量欠佳,噪点基本聊胜于无,不过加了一些抖动,但是依旧有色带和色块,而且第九集与其他集不同,有非常严重的色带色块。画质最差的部分是 OP,特效过多,原生分辨率不稳定,开头 30 秒闪回了大量纯特效场景,画面极度欠码基本全损,不过好在这部分可以用画质和编码都更好的 Crunchyroll 的 Web 源做替换。
处理上,主要就是逆向拉升重构、抗锯齿、去色带、补偿性锐化、自适应降噪。至于 OP 部分,先替换成 CR 源,再使用自适应去色块和去振铃改善欠码观感,由于干扰过多,我们没有做逆向拉升重构,其余处理和正片一样。另外我们调整了第九集的去色带算法组合和强度,以保证观感。
The quality of the BD source is average. The native resolution is 720p. This is a fairly mediocre isekai TP, and the overall approach feels somewhat casual. The lines are quite blurry, with noticeable aliasing caused by upscaling. The flat areas are underwhelming, and the noise is barely effective. Although some dithering was added, banding and blocking are still present. Episode 9, in particular, stands out as especially problematic compared to the rest. The worst part is the OP, where there are too many visual effects, and the native resolution is unstable. The first 30 seconds are filled with pure VFX scenes, and the bitrate is far too insufficient to maintain any image fidelity. Fortunately, this section can be replaced with the Crunchyroll source, which has a much better quality.
In terms of PP, we mainly focused on descaling and reconstruction, anti-aliasing, de-banding, compensatory sharpening, and adaptive denoising. For the OP section, we first replaced it with the Crunchyroll source, then applied adaptive de-blocking and de-ringing to mitigate the effects of insufficient bitrate. Due to excessive interference, we didn't apply descaling or reconstruction here. The rest of the treatment followed the same steps as the main content. Additionally, for Episode 9, we adjusted the combination and intensity of the debanding algorithms to ensure better visual quality.