Acrobat could not perform recognition OCR on this page because This page contains renderable text
When you start the Recognize Text Using OCR command, Adobe Acrobat returns the following error:
"Acrobat could not perform recognition (OCR) on this page because This page contains renderable text."
Solution: save the pdf as png (*.png), make sure that the resolution at least 600 pixel/inch. then combine the png file back to pdf. try to do OCR again.
you can also try to save as TIFF (*.tif or *.tiff) then open the tiff file directly from Acrobat and run Recognize Text Using OCR command.