repository - Installing softwares in ubuntu using other linux distro .ISO

I have Ubuntu 14.04.2 x64 installed (without internet) and also have the .ISO file of Linux Mint 17.1 Rebecca x64. I want to install some packages like Gimp, media player codecs, VLC in my Ubuntu using the .ISO of Linux Mint. How do I make this possible? Actually I want to use Linux Mint .ISO as an offline software repository for my Ubuntu.