Merge MTN with this project

[GoogleCodeExporter]

http://moviethumbnail.sourceforge.net/

While this project isn't completely like your single image thumbnailer, there's 
still a lot of good code to use and merge into this project.  MTN is a great 
tool for producing video screencap images, but it hasn't been updated since 
2008, and newer libraries are starting to show its age.

Original issue reported on code.google.com by [email protected] on 20 Dec 2011 at 9:57

[wahibre]

Old MTN is forked and updated to meet the new FFmpeg API https://gitlab.com/movie_thumbnailer/mtn