[How to] Create screencaps on linux

[mRAza]

Package libgd2 is a virtual package provided by:
libgd2-xpm 2.0.36~rc1~dfsg-3ubuntu1.9.10.1
libgd2-noxpm 2.0.36~rc1~dfsg-3ubuntu1.9.10.1
You should explicitly select one to install.
E: Package libgd2 has no installation candidate

try this

sudo apt-get install -y libgd2-xpm libavcodec51 libavformat52 libavutil49 libswscale0