An era has ended. As of the 18th of this month, Zeranoe, the best source for Windows binaries of FFMPEG, has shut down.
Two other sites have stepped up to become the official FFMPEG Windows binary maintainers, but neither of them builds 32 bit versions.
This leaves those of us who rely on FFMPEG for AVISynth processing with a choice: trust less popular/probably not vetted sources for new 32-bit versions of FFMPEG, or build the source code ourselves. As this thread on Doom9 suggests, the latter seems to be the more popular choice:
http://forum.doom9.org/showthread.php?p=1923902#post1923902
In particular, commenters there suggest using a set of scripts called media-autobuild_suite.
https://github.com/m-ab-s/media-autobuild_suite
Since everything involved with MABS is open source and well tested, I'm going to be using this solution for 32-bit from now on unless it absolutely breaks down on me. It'll mean a little extra complexity, but gains the benefit of being able to control what's compiled into FFMPEG.
It also means that I'm probably going to have to go back and update several of my tutorials, which I don't have a lot of time to do these days.
Going forward, I'm going to recommend binaries from the official FFMPEG Windows binary maintainers for 64-bit, and building from source for 32-bit.
Personally, I wish I could go 100% 64-bit at this point, but there's still a few important 32-bit AVISynth plugins that I need to use, So until those either get updated or become obsolete, that's going to be the situation.
