Evision source/sink for Membrane

[Felix]

Loading it with Evision or Image should simplify the unwrapping a lot, as shown here:

Extracting selected images from downloaded video files?

As of image version 0.21.0 which I just published you can leverage the Evision.VideoCapture module to extract images from a video. You can therefore use either the more idiomatic API in Image.Video or simply leverage the code that is there to use Evision directly. Depending on the codec support of the OpenCV installation on your system I suspect you may not need to use the FFMEG CLI approach any more. Example using Image # Extract using a frame offset iex> {:ok, video} = Image.Video.open("./…