wow!!!
My mistake, I was executing Dooble QT5
But I tell you, keep in a new folder the Tellie,https://www.dropbox.com/s/2om1wusf843us7j/qt6-6.2.4-os2-20230214.zip?dl=0
And start /QT6/bin/dooble.exe As the Dooble.exe program was not, the QT5 dooble was loaded
And the HTLM5test program gave me 522, now qt6 =519

-Tellie
Can you put the link to those two test programs?
Where can I download Libvpx1.13
Saludos