Here is the 1.28.2.68 and 1.29.0.4 experimental viewer
https://cattencarter.com/CoolVLViewer1.28.2.68.zipMD5(CoolVLViewer1.28.2.68.zip)= 195a48f965bbc95b20fd6877ad2c1b44
SHA1(CoolVLViewer1.28.2.68.zip)= fc61741d7911f0e0f07a5c016d1fd3e3eb3ae7b1
https://cattencarter.com/CoolVLViewer1.29.0.4.zipMD5(CoolVLViewer1.29.0.4.zip)= 925db996c694fb4e1fce5e6785e62184
SHA1(CoolVLViewer1.29.0.4.zip)= 9203e6a91ce01a94dd5b633441e2d6386b6dd67a
On my two computers running Monterey, 1.29.0.4 will crash on exit. If you don't experience this I'd like to know.
You will need to install the gstreamer package to play movies.
You can get it from here:
https://gstreamer.freedesktop.org/data/pkg/osx/1.16.1/gstreamer-1.0-1.16.1-x86_64.pkg