Topic: SVP 4 Mac on OS X 10.10/10.9 (Yosemite/Maverics)
The last SVP version supporting 10.10 is 4.2.146!
It's impossible now to install Vapoursynth libs (and mpv with Vapoursynth support obviously) via Homebrew due to missing zimg dependency - Homebrew says
zimg: macOS El Capitan or newer is required.
What we can do? We can build zimg, Vapoursynth and mpv manually and place them into Homebrew's "cellar".
So, considering a clean OS X install, the following should work:
1. Install Homebrew
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
2. Install all the mpv dependecies:
brew install libass tesseract python3 mpv
this can take a while, especially on 10.9
3. Remove installed mpv cause we gonna replace it with our own build:
brew unlink mpv
rm -fR /usr/local/Cellar/mpv
4. Unpack .tgz with pre-built zimg, vapoursynth and mpv into /usr/local/Cellar
5. Link our binaries into /usr/local:
brew link --overwrite zimg vapoursynth mpv
6. Restart SVP