How do you convert a PDF to a SPECIFIC Jpeg resolution size in Acrobat?

[Extremeline Productions]

The question is in the subject line. How do you convert PDF pages to a SPECIFIC Jpeg resolution size in Acrobat?

For example, I want to convert pages of a PDF to standard HD resolution size, 1920x1080. 

Why isn't this a "settings" option in the File<Export To<Image<Jpeg<Settings? 

Any help on this would be appreciated! 

[Extremeline Productions]

My current work around is to:

Open the exported PDF jpegs in photoshop and re-export as the ideal resolution. Any idea if this can be done without the work around.

[Bernd Alheit]

What is the size of the pages?