Brolf authored 6 years ago and georg committed 6 years ago

Closes #96

- This commit introduces optional dependencies (namely ffmpeg):
  mat2 will spit a warning when trying to process an .avi file
  if ffmpeg isn't installed.
- Since metadata are obtained via exiftool, this commit
  also refactors a bit our exfitool wrapper.

Pixbuf only supports .jpeg files, not .jpg, so libmat2 looks for such an
extension and converts it if necessary. As this check is case sensitive,
processing .JPG files does not work.

Fixes #47.

Signed-off-by: Antoine Tenart <antoine.tenart@ack.tf>

- the `src` folder is now `libmat2`
- the `main.py` script is now `mat2.py`

To be completely honest, BMP have no metadata,
but we still add it, just in case™