What is makemkv-pro-archival-toolkit?

UniStream Transcoder 2026 is described in this repository as a tool for extracting content from DVD, Blu-ray, and UHD discs and converting it to MKV files without re-encoding the video. MKV is a container format that can hold video, multiple audio tracks, subtitles, and chapter markers in a single file. The tool positions itself as an alternative to MakeMKV, a well-known commercial disc ripping application. According to the README, the tool decrypts disc protection systems (the encryption schemes used on commercial Blu-ray and UHD discs to prevent copying), then extracts all streams from the disc including high-definition audio formats and subtitle tracks, and packages them into an MKV file without quality loss. YAML-based configuration profiles are described, letting users define which audio tracks to keep, which subtitles to embed, and how to name the output files. A command-line interface is described for batch processing, including flags for a dry-run mode that simulates the process without writing files, automatic disc ejection for headless servers, and webhook notifications when extraction completes. The README lists support for Windows, macOS, and Linux. It also describes a graphical interface with multilingual support and dark mode. The repository description explicitly mentions "Full Decryption" and the topics list includes terms like "dvd-to-mkv" and "uhd-decrypter." A download badge at the top of the README links to an external GitHub Pages site. As with other repositories in this pattern, no source code or build instructions appear in the provided text. The README describes a software product but does not include the software itself.