For whatever is worth, the same thing just happened all of a sudden to me to, in a Windows 7 machine with the 115.0.2 or 115.0.3 installed.
But it was blacking out and refusing to play any media no matter what site, even MP4s saved to disk.
I updated Firefox to the 115LTS and videos started working again.
But it was blacking out and refusing to play any media no matter what site, even MP4s saved to disk.
I updated Firefox to the 115LTS and videos started working again.