[TechNinja] Ojamajo Doremi Sharp Movie [BD x264 Hi444p 516p Opus] :: Nyaa ISS

[TechNinja] Ojamajo Doremi Sharp Movie [BD x264 Hi444p 516p Opus]

Category:
Date:
2021-02-20 03:49 UTC
Submitter:
Seeders:
1
Information:
No information.
Leechers:
0
File size:
355.9 MiB
Completed:
38
Info hash:
5ea4604fdf37bee6d6ea300ec71c361643cdc6ec
**Description** The pixelated mess of a release was my main motivation for doing this right. I downscaled the BD and then upscaled it properly resulting in a much better image. All the pixelation is gone and there is no detail loss in the backgrounds. I encoded the original PCM audio to Opus. The subs and fonts are from Doremi. The chapters are from the BD. This is a smaller version of my [1032p release](https://nyaa.iss.one/view/1345611). **Info** Video: 960x516p x264 10-bit 4:4:4 chroma Audio: Opus 2.0 192kbps Sub: Doremi Chapters: yes **Tech Note** The backgrounds were scaled fine but the characters were horribly pixelated from nearest-neighbor scaling. To begin I downscaled the BD to the largest 16:9 resolution that's both smaller than 480p and a multiple of 2. This is because while the original resolution is around 480p, 480p doesn't have a perfect 16:9 ratio. I needed to match the BD since I don't know the exact native resolution. After cropping and encoding to lossless yuv444p 832x448, I extracted all the frames to png. I then used Waifu2x with the CUnet model to double the resolution. I know there are other programs that use Waifu2x specifically for video upscaling but since I haven't inspected their claims for myself yet I played it slow and safe. It only took ten and a half hours with my GTX 1060 6GB, to give a reference point. Finally I encoded the 1664x896 png frames to yuv444p10le 960x516 with bicubic downscaling. For some weird reason ffmpeg treats rgb input as bt601 so I had to convert to bt709. I used 4:4:4 chroma because there was noticeable chroma haloing and it was distracting. This smaller 516p resolution is close to the original master size so it looks the same as the 1032p version (but more compressed) with the right upscaler. TL;DR I fixed the pixelation using Waifu2x

File list

  • [TechNinja] Ojamajo Doremi Sharp Movie [BD x264 Hi444p 516p Opus] [681E80BA].mkv (355.9 MiB)