vtf2png is a command line tool to extract images from the VTF format used by
Valve's Source Engine. It supports a variety of pixel data formats, including
most of the RGBA variations and DXT compression formats.
The only dependencies are libpng and argp.
Export an image:
./vtf2png some.vtf out.png
Export a specific frame:
./vtf2png -f 17 some.vtf out.png