About 5KPlayer...

5KPlayer is a totally free multimedia player, DLNA streamer, video downloader and AirPlay mirroring recorder.
And 5kplayer is licensed under the GNU General Public License Version 2 (referred herein as GPL), find the source code of 5KPlayer on GitHub.

• The video decoding is based on the FFmpeg open source project, which is mainly under the GNU Lesser General Public License Version 2.1 or later (referred herein as LGPLv2.1), and several optional parts & optimizations are under GNU General Public License version 2 (GPLv2).
  Find the source code here: https://github.com/5KPlayer/FFmpeg.git
• The basic local file playing is based on VLC open source project, which is under the LGPLv2.1 and GPLv2 licenses.
  Find the source code here: https://github.com/5KPlayer/vlc.git
• The DLNA streaming is based on the libupnp open source project.
  Find the source code here: https://github.com/5KPlayer/libupnp.git
• The media info checking is based on the MediaInfo open source project from https://mediaarea.net/.
• The YouTube download is based on the youtube_dl script.
• The Hardware acceleration is based on the Nvidia CUDA, AMD and Intel Hardware Computing SDK.
• The Russian UI is translated by Vitaly Naumenkov from Dnepro of Ukraine