FFmpegThumbnailer

version 1.1.3
- Use PkgConfig for ffmpeg to avoid build problems

version 1.1.2
- Fixed compilation error when using latest ffmpeg (thanks to Samuli Suominen)

version 1.1.1
- Fixed compilation error when using latest ffmpeg
- Disabled seeking in h264 files, because this causes 100% CPU usage in ffmpeglib (workaround)

version 1.1
- Updated command line argument parser
- Possibility to add a movie strip overlay

version 1.0
- Initial release of the FFmpegThumbnailer
