mpv
Command line video player
... loved by videophiles, such as video scaling with popular high quality algorithms, color management, frame timing, interpolation, HDR, and more. mpv can leverage most hardware decoding APIs on all platforms. Hardware decoding can be enabled at runtime on demand. A straightforward C API was designed from the ground up to make mpv usable as a library and facilitate easy integration into other applications. mpv is under active development, focusing on code refactoring and cleanups.