yaobiao131/downkyicore

Downkyi is a cross-platform video downloader for Bilibili that enables batch downloading of content including 8K, HDR, and Dolby Vision formats, along with a toolkit for audio-video extraction and watermark removal.

The tool addresses the need to download videos from Bilibili by interfacing with the platform's APIs and access mechanisms. It works by connecting to Bilibili's systems to retrieve video streams and associated metadata, allowing users to save content locally in various quality levels and formats.

The project is no longer maintained. The repository has been permanently closed following legal action from Bilibili's legal representatives, who issued a cease-and-desist notice alleging that the tool engaged in unauthorized reverse engineering of Bilibili's non-public interfaces, authentication systems, access controls, and paid content protections. The notice specifically cited concerns about circumventing login restrictions to access premium member content, bypassing anti-scraping measures, extracting paid series and course materials, and capturing complete video streams along with comments and subtitles.

Anyone considering this tool should be aware that it is deprecated and no longer receives updates or maintenance. The legal circumstances surrounding its development mean that using or distributing it carries potential legal risk in jurisdictions where such activity is actionable.