- change 'has_extension' from a simple flag/bool to a field that
contains the original filename extension
- rename 'keywords' to 'kwdict' and some other stuff as well
- inline 'adjust_path()'
- put enumeration index before filename extension (#306)
By default FFmpeg assumes a 25 FPS input frame rate, leading to dropped
frames if the source requires a higher frame rate than that.
This commit adds a `framerate` option (default "auto"), which allows to
automatically assign a (more or less) fitting frame rate based on
delays between ugoira frames and avoids dropped frames.
- ffmpeg-location: path to the ffmpeg (or avconv) executable
- ffmpeg-args: additional command line args for ffmpeg
- extension: filename extension of the resulting video file
