XunoPlayer-QtAV is fork of QtAV a multimedia playback library based on Qt and FFmpeg with enhanced user functionality and optimization for High quality Quality 12-bit RGB AV1 & HEVC video.
XunoPlayer has been added to FFmpeg projects page http://ffmpeg.org/projects.html
QtAV is free software licensed under the term of LGPL v2.1. The player example is licensed under GPL v3. If you use QtAV or its constituent libraries, you must adhere to the terms of the license in question.