# Sora no Otoshimono (Heaven's Lost Property)
---
> Notice: S00E03's default English "Dialogue" track is erroneously tagged as "Japanese". A couple of fonts, *Quattrocento Sans* and *DFPShinTen-W5-Madoka*, may also be missing and result in subpar styling. Apologies for the inconvenience and thanks to those who alerted us of the issue.
[![Cover][cover]](https://danbooru.donmai.us/posts/4054245)
## Series
`Sav1or` | Episodes | ![MyAnimeList][mal-logo] MyAnimeList | ![TVDB][tvdb-logo] TVDB | ![Nyaa][nyaa-logo] Source
--- | --- | --- | --- | ---
**Season 1** | 13 *(S01E01-S01E13)* | [**Sora no Otoshimono**](https://myanimelist.net/anime/5958 "Sora no Otoshimono") | [**Heaven's Lost Property - Misplaced by Heaven**](https://thetvdb.com/series/heavens-lost-property/seasons/official/1 "Heaven's Lost Property - Misplaced by Heaven") | [KH][source-kh], Docomo
**OVA** | 1 *(S00E01)* | [**Sora no Otoshimono: Project Pink**](https://myanimelist.net/anime/7858 "Sora no Otoshimono: Project Pink") | [**OVAs - Project Pink**](https://thetvdb.com/series/heavens-lost-property/episodes/2791171 "OVAs - Project Pink") | [KH][source-kh], [kisu-no-yume][source-kny]
**Season 2** | 12 *(S02E01-S02E12)* | [**Sora no Otoshimono Forte**](https://myanimelist.net/anime/8407 "Sora no Otoshimono Forte") | [**Heaven's Lost Property - Forte**](https://thetvdb.com/series/heavens-lost-property/seasons/official/2 "Heaven's Lost Property - Forte") | [KH][source-kh], Docomo
**Movie** | 1 *(S00E02)* | [**Sora no Otoshimono: Tokeijikake no Angeloid**](https://myanimelist.net/anime/9790 "Sora no Otoshimono: Tokeijikake no Angeloid") | [**Movies - The Angeloid of Clockwork**](https://thetvdb.com/series/heavens-lost-property/episodes/3782731 "Movies - The Angeloid of Clockwork") | [KH][source-kh], [kisu-no-yume][source-kny]
**Movie** | 1 *(S00E03)* | [**Sora no Otoshimono Final: Eternal My Master**](https://myanimelist.net/anime/12783 "Sora no Otoshimono Final: Eternal My Master") | [**Heaven’s Lost Property Final - The Movie: Eternally My Master**](https://thetvdb.com/series/heavens-lost-property/episodes/4771492 "Heaven’s Lost Property Final - The Movie: Eternally My Master") | [KH][source-kh], [KH][source-kh-ova], [kisu-no-yume][source-kny]
---
## Release
A complete Dual Audio release encoded in AV1 and OPUS for optimum size and quality. Files are named to support media servers like Plex using TVDB metadata.
`Sav1or` | Codec | Quality | Language | Notes
--- | --- | --- | --- | ---
**Video** | AV1 | 1080p, 1072p, 10-bit || Normal-Boost
**Audio** | OPUS | Stereo (2.0) 128K, Stereo (2.0) 64K | Japanese, English | English Commentary Stereo 64K
**Subtitle** | ASS | *eh* | English, French | Dialogue, Signs & Songs
**Chapter** || *yes* | English
**Encoding Details**:
This release was encoded with our very own Normal-Boost encoding setup. As such, the CPU preset and CRF values were selected per scene based on an initial measurement of quality from the first pass and thus the two values listed in the command below are inaccurate. For the most demanding scenes, a minimum of preset 2 and CRF 18 was used. Conversely, the simplest scenes would have a preset of 4 and CRF 40. However, most *normal* scenes are weighted towards CRF 28. This allows for smaller file sizes and improved quality in select scenes. For more details, experimental data, and other wild conjectures, we invite you to join us in the Discord server.
Ideally, had the requester not insisted on higher quality, we would have targeted a much smaller release as our initial measurement of S01E01 yielded a SSIMULACRA 2 score of ~87 whereas any value from 80-85 would have been acceptable, especially so for an older show lacking sharp details. We also admittedly compromised on their insistence on FLAC or very high bitrate audio. We can no longer contact them but we hope they find this release acceptable.
SVT-AV1-Psy 1.8.0 with Av1an (`--photon-noise 2`)
```
--preset 4 --crf 28 --aq-mode 2 --tune 2 --keyint 0 --lp 2 --scd 0 --enable-tf 0 --enable-qm 1 --qm-min 0 --qm-max 15 --new-variance-octile 2 --variance-boost-strength 3
```
> This project is a production with the goal of the smallest video size with moderate subjective compromises to image quality. This is not the hallmark of AV1, but close enough. This release should only contain changes to the video stream and audio tracks. The subtitle and attachment tracks are usually copied from the noted sources. Timings are not adjusted except in cases of extreme delay as a result of mixing sources. - `Sav1or`
### [**Comparisons**](https://slow.pics/c/LGDsHfbs "S01E01")
Coincidentally, we managed to match the bitrate of an existing HEVC release for S01E01 and have made some crude comparisons in the above header and below. Most comparisons were chosen specifically to showcase the most challenging scenes for AV1. It is no secret that AV1 shines best at lower bitrates but pales in comparison at the highest fidelity in regards to texture. However, recent changes within SVT-AV1-PSY have given us the ability to retain more textures than previously possible at near or lower bitrates.
HEVC | AV1
:-: | :-:
[](https://i.slow.pics/gwLcGqQF.png) | [](https://i.slow.pics/OjRjmKy1.png)
[](https://i.slow.pics/0sjAFJ0u.png) | [](https://i.slow.pics/GaXscHt4.png)
[](https://i.slow.pics/4lhwITn8.png) | [](https://i.slow.pics/MiB0EI9y.png)
[](https://i.slow.pics/8V6kPCTC.png) | [](https://i.slow.pics/hOzdVVVa.png)
[![AV1 Logo][av1-logo]](https://discord.gg/83dRFDFDp7)
Thanks to the helpful people on the [**AV1 Anime Discord**][discord-av1]. Also thanks to Francky D. for sourcing the French subtitles. This was also a request from the server. Come and join us there!
### Source
Thanks to the following sources:
* ![Nyaa][nyaa-logo] [KH][source-kh] - Video, Audio, Subtitle, Chapter
* ![Nyaa][nyaa-logo] [KH][source-kh-ova] - S00E03 EN Audio
* Docomo - S01-S02 FR Subtitle
* [kisu-no-yume][source-kny] - S00E01-S00E03 FR Subtitle
### [**Media Info**](https://rentry.co/wa9sinuu "S01E04 Media Info")
[mal-logo]: https://i.imgur.com/ZCtSawZ.png "My Anime List"
[tvdb-logo]: https://i.imgur.com/dDhSn59.jpeg "The TVDB"
[nyaa-logo]: https://i.imgur.com/7o97aB0.png "Nyaa"
[av1-logo]: https://aomedia.org/assets/images/home-av1-500x200.png "Click to join us at the AV1 weeb edition Discord"
[discord-av1]: https://discord.gg/83dRFDFDp7 "AV1 weeb edition - Discord"
[cover]: https://cdn.donmai.us/original/f1/03/__ikaros_nymph_astraea_and_sakurai_tomoki_sora_no_otoshimono_drawn_by_watanabe_yoshihiro__f1032bb3ce224b8b83d8e79f3746988d.jpg "Do you have any idea how long it took for us to find a barely-appropriate cover photo?!"
[source-kh]: https://nyaa.si/view/1238096 "[KH] Heaven's Lost Property (Sora no Otoshimono) S1+S2+OVA+Movies (BD 1080p) [Dual-Audio]"
[source-kh-ova]: https://nyaa.si/view/1486056 "[KH] Heaven's Lost Property Final: Eternal My Master (Sora no Otoshimono Final: Eternal My Master) (2014) (BD 1920x1080 x264-10bit FLAC) [Dual-Audio]"
[source-kny]: https://www.anime-ultime.net/file-0-1/2836/Gekijouban-Sora-no-Otoshimono---Tokei-Jikake-no-Angeloid-vostfr "Gekijouban Sora no Otoshimono - Tokei Jikake no Angeloid vostfr - kisu-no-yume"
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