'libpng' not found

[vguptai]

Hi,

I am getting the following error when loading the video. I am using CentOS.

Have tried installing image module but the issue persists.

/usr/local/torch/install/share/lua/5.1/xlua/init.lua:360: module 'libpng' not found: no field package.preload['libpng'] no file '/root/.luarocks/share/lua/5.1/libpng.lua' no file '/root/.luarocks/share/lua/5.1/libpng/init.lua' no file '/usr/local/torch/install/share/lua/5.1/libpng.lua' no file '/usr/local/torch/install/share/lua/5.1/libpng/init.lua' no file './libpng.lua' no file '/usr/local/torch/install/share/luajit-2.1.0-beta1/libpng.lua' no file '/usr/local/share/lua/5.1/libpng.lua' no file '/usr/local/share/lua/5.1/libpng/init.lua' no file '/usr/local/torch/install/lib/libpng.so' no file '/root/.luarocks/lib/lua/5.1/libpng.so' no file '/usr/local/torch/install/lib/lua/5.1/libpng.so' no file './libpng.so' no file '/usr/local/lib/lua/5.1/libpng.so' no file '/usr/local/lib/lua/5.1/loadall.so' warning: could not be loaded (is it installed?)