add properties specifically for movies in the ffmpeg plugin
When thumbnailing through the API, the Bitmap object after loading a source image has properties such as width, height, colour depth, etc. But the ffmpeg plug-in isn't able to expand on this as-is. It would be great to be able to access the duration of the movie as a property. (We store this meta info with the original file, and display it alongside the thumbnail.)
We would welcome a pull request for this feature. The ImageJob class has a dictionary for storing metadata such as this.