avfs has been moved to a separate repository/download
configuration and and handling of autoloading directories has been completely reworked, see documentation for a full explanation
the whole application can now be installed with "pip install vapoursynth" on windows, osx and linux (HolyWu)
greatly improved support for python virtual environments
added ccfEnableFrameRefDebug core creation flag that will log all frame allocations to help find memory leaks
added getCoreInfo2 function which also returns the core creation flags used
added the new _Range property which follows the H.273 numbering (0 and 1 switched) instead of the now deprecated _ColorRange property, all filters compiled against api version 4.2 and later must only use the _Range property
fixed crash in vspipe when using --info with multiple output clips set and discarding all output (--)
removed remaining leftovers of 32 bit windows support from the source code
windows binaries now require windows 10
dropped support for python versions older than 3.12 in order to make vsscript python version independent as well
now requires visual studio 2026, python 3.14 and inno setup 6.6+ on windows to build