is there a converter available to generate tex code out of powerpoint slides? beamer documentcalls is preferred. another tex code is accepted if beamer output would not possible. is there maybe an open source project available to modify the converter?
There exists a project (amongst others), but it will not do all of the conversion stuff.
Anyway, maybe you have to convert your pptx to ppt.
Apart from that: Writing Beamer code without generation will be better.
A similar thread exists: