NYAA 发布描述长度限制，我们删除了部分内容，请移步主站或其他 BT 站查看。 NYAA Release Description has a length limit. Please refer to other BT tracker or our official website for the missing descriptions. 轻旅轻营/摇曳露营 / Yuru Camp / ゆるキャン△ BDRip MKA contains FLAC 7.1 for movie in the folder of 1080p version. All seasons of the project are in collaboration with **Airota** and **Nekomoe kissaten**. Thanks to them for elaborating Chinese subtitles. **Movie:** The image quality of Yuru Camp Movie 1080p Blu-ray is pretty good, with sharp lines and rich texture details, but the lines do have some obvious aliasing. Apart from the usual aliasing caused by 3D rendering, the hand-drawn line art also has so-called sub-pixel aliasing, given its Full-HD resolution and steep edges around them (like those commonly seen on HD texts). Anti-aliasing would unavoidably thicken the lines and make them look less sharp, so we tried to use conservative parameters for anti-aliasing, then compensate with sharpening and darkening, to remove the aliasing while retaining the perceived sharpness. The surface area is of good quality – there is hardly any visible color banding thanks to the heavy grains, and we only applied preemptive debanding. Finally, routine adaptive denoising was applied to optimize the bitrate. The image quality of the UHD Blu-ray, however, is worse compared with the 1080p version. It seems the UHD version is upscaled from 1080p or some resolution slightly higher than 1080p – the aliasing issue in the 1080p version is magnified and made more prominent here. We employed descaling together with compensatory sharpening to enhance the line art. Film grains also appeared to be bigger due to upscaling, and compression artifacts can be seen due to insufficient bitrate. We reconstructed the grains and applied debanding processes. The UHD Blu-ray this time is a Dolby Vision (DV) production, which is the first of its kind for us to make a rip from. The full explanation of DV would be too lengthy to be laid out in this post, so we are only going to mention a few basic concepts here. The DV Blu-ray consists of three parts: the BL (base layer), the EL (enhancement layer), and the RPU (reference picture unit). When in the form of profile 7 (used for UHD Blu-ray), there will be two video streams present, one being the full-resolution BL, the other being the 1/4 resolution EL, within which the RPU is embedded. The EL can be either MEL (minimum enhancement layer, consists only zeroes, appears green when played alone) or FEL (full enhancement layer, has real residual signal, appears grayish when played alone). DV Blu-rays with MEL (e.g. Violet Evergarden the Movie) can be losslessly converted to profile 8.1 (BL + RPU) for better compatibility, while Blu-ray’s with FEL cannot, as data in the EL will be lost, and the RPU might not be compatible. The DV Blu-ray of Yuru Camp Movie does have an FEL, so we first reconstructed BL + EL + RPU to get the original 12-bit video stream, and then applied further processing in VapourSynth. We exported the processed video in uncompressed raw format, and encoded three versions: profile 5, HDR10_600 and SDR. The first one is still a DV format, while the latter two are "normal" formats that tone-mapped using DV algorithms and dynamic metadata. Why so many formats? On one hand we hope to meet various needs of our audiences, while on the other hand, we would like to take this chance to verify the workflow for encoding DV Blu-rays. We chose profile 5 for the final DV format. Profile 7, as used in UHD Blu-rays, is out of the question given its poor playback compatibility. Profile 8.1 and profile 5 both have pros and cons, and both are BL + RPU, single layer formats. Profile 8.1 is compatible with HDR10, thus it can be played as a normal HDR video in environments without DV support, but the quality may vary. Profile 5 is one of the most basic DV formats, incompatible with HDR10, uses IPT colorspace, and would appear weird purple-greenish colors if played on unsupported devices. Despite its compromised compatibility, profile 5 allows redistribution of dynamic range of image content prior encoding and uses full range encoding, therefore theoretically it would have less precision loss compared with profile 8.1 when encoded to 10-bit. Moreover, profile 5 support is the minimum requirement on any DV-supported device, and it's also the most common DV format used on various streaming websites, making it the most robust choice among DV formats. All in all, our profile 5 encode is still DV, thus it requires devices with DV support for proper playback. If you don't have one but are still curious about how DV playback looks like, we have two other versions to choose from: HRD10_600 and SDR. The HDR10_600 version is tone-mapped according to DV algorithms and dynamic metadata targeted at 600 nits, encoded as a normal HDR10 video, so DV support is not required. To ensure playback quality, we only recommend this version if you have a competent HDR display, or if you don't, we recommend the SDR version, again tone-mapped according to DV algorithms and dynamic metadata, now targeted at 100 nits and encoded as a BT.709/BT.1886 SDR video. Given that Yuru Camp Movie doesn't really have that much of HDR, most scenes are in relatively low brightness, the SDR version might be a better choice for most people. Although it's worth noting that DV has different tone-mapping algorithms in different playback environments, so if you do have a DV supported device, you might still try the DV profile 5 version to get potentially better experience. ASS subtitles usually don't play well with HDR. This time we also invited the collaborating fansub group to make adjustments for the HDR versions. Note that the subtitle version one should use does not depend on the video itself, but rather the display one's using - you should still use the SDR version subtitles if you intend to watch the HDR video (tone-mapped) on an SDR display. Given the numerous HDR-related issues in ASS format standards, video players and subtitle renderers etc., you may still encounter issues with both versions of subtitles here, and in that case we would recommend just watch the SDR version with the SDR subtitles. In theory, one should use the same subtitles for the DV version as the HDR10 version, but considering the unpredictable behavior in rendering ASS subtitles on a DV-supported device, no promise can be made here and one should try them out and see. The 7.1ch audio in the UHD Blu-ray is identical to the one in the 1080p version, so we only kept one copy under the 1080p version subfolder. Remember to grab it in case you want it but only download the UHD version. * * * Comparison (right click on the image and open it in a new tab to see the full-size one) Source\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_Encode [](https://img.2222.moe/images/2023/08/29/1272.png) [](https://img.2222.moe/images/2023/08/29/1272v.png) [](https://img.2222.moe/images/2023/08/29/1908.png) [](https://img.2222.moe/images/2023/08/29/1908v.png) [](https://img.2222.moe/images/2023/08/29/8178.png) [](https://img.2222.moe/images/2023/08/29/8178v.png) [](https://img.2222.moe/images/2023/08/29/13539.png) [](https://img.2222.moe/images/2023/08/29/13539v.png) [](https://img.2222.moe/images/2023/08/29/18173.png) [](https://img.2222.moe/images/2023/08/29/18173v.png) [](https://img.2222.moe/images/2023/08/29/23715.png) [](https://img.2222.moe/images/2023/08/29/23715v.png) [](https://img.2222.moe/images/2023/08/29/40525.png) [](https://img.2222.moe/images/2023/08/29/40525v.png) Source (BT.2020 PQ)\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_Encode (100-nits BT.709 BT.1886) [](https://img.2222.moe/images/2023/08/30/1272.png) [](https://img.2222.moe/images/2023/08/30/1272v.png) [](https://img.2222.moe/images/2023/08/30/1908.png) [](https://img.2222.moe/images/2023/08/30/1908v.png) [](https://img.2222.moe/images/2023/08/30/8178.png) [](https://img.2222.moe/images/2023/08/30/8178v.png) [](https://img.2222.moe/images/2023/08/30/13539.png) [](https://img.2222.moe/images/2023/08/30/13539v.png) [](https://img.2222.moe/images/2023/08/30/18173.png) [](https://img.2222.moe/images/2023/08/30/18173v.png) [](https://img.2222.moe/images/2023/08/30/23715.png) [](https://img.2222.moe/images/2023/08/30/23715v.png) [](https://img.2222.moe/images/2023/08/30/40525.png) [](https://img.2222.moe/images/2023/08/30/40525v.png)