ezze, I think small video would be better. If they want to watch every video FAQ, then will have all the little videos in a playlist that will make it easy for them to do this. If they just have a few questions, then they can just look for the videos that have titles relevant to their questions. I think it will make people less likely to skip over the video FAQ that answers their question.
People should check both the video FAQ and textual FAQ anyway. They should not be replacements for each other.
The text FAQ should be relatively concise and to the point. The video FAQ can be more relaxed and conversational, perhaps covering additional points that would have made a mess out of the text FAQ.
I am probably biased since I do not like seeing videos in this contexts (FAQ, tutorials, explanations...) , I usually find it slow and inefficient. Besides those videos tend to be far too wordy.
Yet... There are exceptions and your works are so nice that I love them.
