brief, little, short
lengthy, long
Here is a rather lengthy excerpt from the essay.

5-minute, 10-minute, etc.
This DVD contains a 10-minute excerpt from the stage show.

exclusive (esp. AmE)
an exclusive excerpt from his new book

following
The following excerpts all come from the ‘Spring Symphony’.

book, video (both esp. AmE)
She compiled dozens of book excerpts about the country.

contain, feature, include, play, present, print, provide, publish, quote, read, run (esp. AmE), show
The article included excerpts from various interviews.
Let's run a little excerpt of what Governor Dixon had to say.

excerpt from
The paper published some short excerpts from Mandela's memoirs.

excerpt of (esp. AmE)
a short excerpt of a poem by Keats

Excerpt is used with these nouns as the object:
article