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| Source | [Thighs](https://nyaa.iss.one/view/1570767) |
|----------------|--------------------------------|
| Audio Tracks | Jpn 2ch opus, Eng 2ch aac |
| Subtitle Track | English |
| Encoder | aomenc tune-ssim |
https://slow.pics/c/drNCiapE
Many efforts were made to retain as much grain from the source as possible within the confines of the current state of av1 in relation to bitrate and thus file size. My intent was make make side-by-side comparisons indistinguishable, yet obviously the difference becomes apparent when switching back and forth on slow.pics.
If you'd like to take advantage of the fact that av1 absolutely destroys h264/h265 at lower bitrates/filesizes in regards to lacking compression artifacts (if you don't overdo it, by keeping settings within the realm of reason and/or sanity), checkout the Sokudo release.
That's why there's two releases, [Breeze] for high fidelity and [Sokudo] for compact file sizes! Time is relevant, since the Sokudo release isn't out yet
Does your h265 version retain any original grain?
Your description doesn't indicate your grain source which might confuse some people who are expecting grain synthesis to be used more often in AV1. Probably something you should indicate. These filesizes seem fine if you retained original grain.
@treebeard92 the translucent "dots" that are apparent throughout the entire screen. In the first screenshot comparison, it's massively apparent all through the area of the white clothing. In old anime, cartoons, and TV/movies it was introduced due to the inherent nature of film, which is why it's called filmgrain or grain for short. Japanese anime and western cartoons used a cel-to-film transfer machine/process which caused the effect to happen for them as well, not just with live-action.
As you can imagine, with the advent of fully digital workflows (even ones where hand-drawn animation is transferred to digital for tweaks and editing), a lot of modern anime doesn't have it, but editing software allows you to introduce it as an effect. This show's director chose to use the effect, as do other directors on occasion.
Retaining this original grain effect causes filesizes to be quite large, regardless of whatever codec you use. AV1 and VVC have optional grain synthesis algorithms which can bring the filesizes way back down but isn't quite the same as original grain. Purists tend to prefer to retain original grain. This is why with popular releases like this, you will often see a "purist" release that is quite large and a "compressed" release that focuses on filesize reduction. This will most likely continue with AV1 and VVC unless some magic breakthrough happens with grain synthesis algorithms that make them indistinguishable from original grain.
Comments - 8
chrnodroid
LastBreeze (uploader)
chrnodroid
LastBreeze (uploader)
nph
LastBreeze (uploader)
treebeard92
nph