Summary
Video devices are complex devices to manage video streams that can be used in several control and surveillance applications as far as automation systems useful for industry and/or home automations. We've seen how they are defined in a GNU/Linux-based system and how we can easily add one of these devices to an embedded computer even if its CPU has no dedicated video interfaces.
In the next chapter, we'll see another important (even if very simple) device class that every control automation device that interacts with the environment should have: the ADC.
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