Is this every bit of filmed Twin Peaks material (sans the film, of course)?

all of every episode content.

however, not the lead-ins "previously on Twin Peaks...", nor the "next on Twin Peaks..."  or the single frame teasers for "Next on twin Peaks" from the second season.

also not included is the three minute montage made for episode 23 which was made to bring viewers up to speed after a two month hiatus.  Cooper dictates to Diane about Windom Earle, Nadine's regression, Ben's environmentalism; Leo missing etc.

Also, the second season premiere does not have the montage of the cliffhangers, "Here's what you've seen up until now..."  And I can't remember if the first season finale has TO BE CONTINUED... still in it or not.

the only commercials are the ones promoting the pilot (although some of it has content from future episodes)

There are also some deleted or alternative scenes that are not included, like Maddy seeing BOB in the carpet...

Ah, I see. Thanks for the replies.