I'm not sure if this falls under the category of "real time video processing" or not... but hopefully not 
I used the Sony A7S recently, and it has a "light trails" feature.
Basically what it does, is go into bulb mode and make it so that during each scan of the sensor, only pixels that are brighter than the previous scan are added to the photo, instead of globally adding brightness to each pixel.
So it starts as black (obviously), and the first scan gets the scene with your ISO/AP settings. Then each sequential scan will check for pixels that are brighter than the current compiled pixel set has, and brighten those pixels accordingly.
The photos I did with it are amazing and impossible without this sort of new-age tickery. Canon is always so far behind with the present day features in their prosumer lines. Hopefully you geniuses at ML can make it happen
Here is Sony's video that demonstrates the feature
https://www.youtube.com/watch?v=COAb3II1PSs
I used the Sony A7S recently, and it has a "light trails" feature.
Basically what it does, is go into bulb mode and make it so that during each scan of the sensor, only pixels that are brighter than the previous scan are added to the photo, instead of globally adding brightness to each pixel.
So it starts as black (obviously), and the first scan gets the scene with your ISO/AP settings. Then each sequential scan will check for pixels that are brighter than the current compiled pixel set has, and brighten those pixels accordingly.
The photos I did with it are amazing and impossible without this sort of new-age tickery. Canon is always so far behind with the present day features in their prosumer lines. Hopefully you geniuses at ML can make it happen
Here is Sony's video that demonstrates the feature
https://www.youtube.com/watch?v=COAb3II1PSs