downkyicore
哔哩下载姬(跨平台版)downkyi，哔哩哔哩网站视频下载工具，支持批量下载，支持8K、HDR、杜比视界，提供工具箱（音视频提取、去水印等）。
A cross-platform desktop app for downloading videos from Bilibili in high-quality formats including 8K, HDR, and Dolby Vision, with batch download support and built-in tools for extracting audio and removing watermarks.
This is a cross-platform desktop app for downloading videos from Bilibili, a Chinese video-sharing platform similar to YouTube. The app is written in C# using a UI framework called AvaloniaUI, which allows it to run on Windows, Linux, and macOS. It was built by a developer who used an existing Windows-only Bilibili downloader called DownKyi and found it excellent but unusable on macOS, so they rebuilt it with cross-platform support.
The downloader supports high-quality video formats including 8K, HDR, and Dolby Vision. It can handle batch downloads, meaning you can queue multiple videos at once rather than downloading them one by one. There is also a built-in toolbox with utilities for extracting audio or video from a file and for removing watermarks. The app bundles its own copies of .NET 6, ffmpeg, and aria2, which are the underlying tools it uses for playback processing and downloading, so you do not need to install those separately.
Downloaded files land in a default location that varies by operating system: a Media folder inside the app directory on Windows, the Application Support folder on macOS, and the .config folder on Linux.
The README includes a disclaimer noting that the software is intended only for personal learning and exchange, that the copyright for any downloaded content belongs to its original creators, and that users should delete downloaded files within 24 hours. The author states they bear no responsibility for copyright issues arising from use of the tool.
Where it fits
- Download Bilibili videos in 8K, HDR, or Dolby Vision quality to watch offline on Windows, macOS, or Linux.
- Queue multiple Bilibili videos for batch download instead of downloading them one by one.
- Extract the audio track from a Bilibili video using the built-in toolbox.
- Remove watermarks from downloaded Bilibili video files using the built-in utility.