Nice tips for soundtrack friends but, I dont think its safe to put music like this under youtube videos (for a reasons discussed a lot on many youtube channels so I wont start ranting about it here :)) I try to add my sound so that a crack can be heard or other hints in the recorded sound, but have some problems with the way filmic pro records the sound that I need to solve.
Also - I have to say I am thinking hard if making the video is of as much more value as it is much more time spent on it, since I can just make the picture of the plot on the right side and not bother with 10 minutes of HD video at all (most of the video is a static frame after all)
To the process and meaning - what I do is make a video with my iphone (lighted with its led “flash” light), on a manual exposure setting so that it does not drift and change in any way. I then make a small cropped part where I think is most representative of the colour (without the light reflected from glass etc) and blur the hell out of it to make average colour. I then make it very small rectangle and move it horizontally, leaving a trail of echoes of colours along the way - that way the coloured strip representing the colour changes is make. I then take it and extract only the luminosity of that strip (sort of black and white but not exactly) and use it to create the top curve that cuts the strip (after some median processing to remove noise and make it into nice curve) so the curve shape on top of the strip shows how the beans get darker (or brighter in the start when they dry to pale and yellow) … I then synchronize the length and size of it to the screenshot of profile and the recorded video … (blurred version representing the colour that was used to plot the colour changes is under the roasting video)