Emby markets itself as an open source competitor to Plex, however the binaries they distribute are not reproducible using the code published in the repository. Despite multiple requests for the build scripts for the dotnet core version of Emby, the core developer Luke states "we are currently not publishing the build process for it, but don't worry, we will be doing .net core-based packages for all of the popular distros."[0]
The GPL requires the release of not just source code, but build scripts and supporting materials, outlined here in the SFLC's "A Practical Guide to GPL Compliance", sections 3.3, 3.4, 4.2.3. [1]
The core development team has been made aware of this, but is still refusing to make the build scripts available for the currently distributed version of Emby. Neither have they relicensed the project, despite all current contributions being covered under a CLA. This constitutes a willful and deliberate violation of the GPLv2.
[0] https://emby.media/community/index.php?/topic/51614-instruct...
[1] https://www.softwarefreedom.org/resources/2008/compliance-gu...