Chris Raynerson
Liking YTtalk
Outtro should be 10-20 seconds. Enough to use end cards and promote your work. Intros on the other hand... I don't know. If you do one it should 3-5 seconds long. But I don't see the point in them anymore. It loses audience retention if you use one. You should just state what the video is about at the beginning, introduce yourself and go straight into the content.
