I have a long Beamer presentation that gave me no errors or warnings on texlive 2013, but since I upgraded to texlive 2015, I get the following warning:
large interlaced PNG might cause out of memory (use non-interlaced PNG to fix this)
However, it does not indicate the line where this happens, making it a potentially arduous task to debug this... So how should I proceed here?
How can I identify the PNG causing trouble in a big Beamer presentation?
How can I make the PNG "non-interlaced"?