MPV 0.4.1 comes a bunch of bugfixes, as well as assorted improvements and new features. For example, it fixes some seeking issue when playing DVD-Video discs by properly flushing the buffers, disables the ao_null latency emulation, and restores the ability to mix mouse buttons.
The brand-new release of MPV can now be compiled with compilers that do not support atomic operations, correctly checks the length of the last title on a DVD-Video disc with the dvdnav://longest function and makes sure that seeking bounds are always within range by using the dvdnav:// function.