I am using PM Plus ver 6.0, build 7269 (b13242a), Windows 11 64 bit up to date.
I installed gstreamer for the first time today, the complete version and directed PM Plus to it's location on the C drive.
The mov files show up as thumbnails ok but when double clicked do not play the movie, I see only the full screen shot of the thumbnail.
perhaps I misunderstand the purpose of installing gstreamer?