On my Docker Windows Container, all the above did not work because I could not install Windows Media Feature Pack, probably not available in my container.

I managed to find out the missing dlls, which were:

• mf.dll
• mfcore.dll
• mfplat.dll
• mfreadwrite.dll

(You can find them in C:\Windows\System32 on a normal Windows 11 installation, on which you previously installed the Media Feature Pack).

Then I COPY the 4 dlls, thanks to my Dockerfile:

COPY install\\*.dll C:\\Windows\\System32\\