Had a very pleasant email exchange with OSBytes, couple of weeks ago, regarding questions I had about ffmpeg binaries. One take away is that the company rep recommended the binaries from the Tessus as they seem to be updated more frequently. To that point, on the OSBytes web site, Tessus is listed first in the list of sites to download binaries from. However, on this MacUpdate page, the link for "Recommended ffmpeg binaries" points to osxexperts.net. Although I've not problems with either binary (Tessus vs osexperts.net) , it should be noted that on the osxexperts site, it hasn't even been updated yet to show compatibility with 10.13 High Sierra; whereas on the Tessus site, you can actually download NIGHTLY builds. This alone tells you that the developers on Tessus are active, whereas osexperts...maybe not so much.
Also the Tessus builds, the developers list EXACTLY what versions of each library component are in every build, with OSEXperts.net there is no upfront documentation. One thing the OSExperts.net site DOES have is a tutorial on building your own binary, if you are so inclined, but for the majority of us who just want a binary, I think Tessus provides more up to date builds and documentation, IMO.
Maybe the 'recommended' link on this macupdate page should point to Tessus instead...if someone's listening. The link to Tessus builds is https://evermeet.cx/ffmpeg/