Theatrical trailer vs teaser trailer

Theatrical trailer:

• More detailed
• More likely to give away more of the storyline
• Longer and more depth
• Gives us the exact dates of when the films will be out

Teaser trailer:

• Usually used for marketing to build up hype for the film
• Up to 90 seconds long
• Gives a glimpse of the storyline using short snippets from the movie
• Usually released months before film or theatrical trailer comes out, this helps to create an interest from the target audience
• Will not give out exact dates usually will say 'coming soon'