I created the appimage with all 4 patches. I have not tested yet due
to lack of HDV clips, but now I will create them directly as Phyllis
indicated.
The appimage starts and seems to work normally.

Regarding pixbuf... I don't know what to say. Maybe it is due to the
fact that I created the appimage in a distro with KDE?

https://www.dropbox.com/scl/fi/8l8k27kxviex1hz4mlu07/cin_svt_aspect-ratio.AppImage?rlkey=tl8l4av4fci6niu65ietc8stl&dl=0