PNG Export From Matinee Really Slow. BMP, jpeg, AVI export fast. Windows 8.1 64bit

Hi

Exporting png sequences from Matinee are really slow, where as bmp, jpeg and AVI RGB are fast. Thought it was just frame size but BMP’s are just under 6mb a frame, jpegs about 50kb each so is this a png codec issue with Windows 8.1? Not had chance to try on Linux and mac yet. Engine 4.5.1 & 4.6 Preview. png frames are approx 1mb.

Same problem that I get bored. I am getting really slow render times and color issues! BMP are really huge to store! Jpegs are low quality to store color data. Does anyone has a better solution to export?

Png’s have a very long compression time - you can see it in Photoshop.

Dannington’s got it. PNG’s default packing algorithm is awfully slow. What I do is export to BMP then use a script to mass convert them to PNG in Photoshop. As for saving them more quickly in Photoshop, try SuperPNG. It’s a much faster save!

Ditto here. I’ve been using imagemagick (from cygwin) to convert BMPs. imagemagick is lightning fast; Unreal must be using some stupid-slow compression code.