Salem's Lot DVD (1979) run-time

[formula72]

Is this true....? I don't mean to open a can of worms, but, the run times for this movie keep changing....

In 1979, the film aired at 210 min.
In 1993, a laserdisc was released at 193 min. (missing 17 minutes)
In 1995, a VHS was released at 184 min. (missing 26 minutes)
In 1999, a DVD was released at 183 min. (missing 27 minutes)

IMDb says this:

Broadcast on network TV in the United States to fill a 200 minutes time slot; later cut to 150 minutes [...]

and

DVD contains 183min version which is the complete mini-series. I also heard of a 184min version floating around (pun intended)

And Wikipedia:

Salem's Lot originally aired on CBS on November 17th and 24th of 1979 in two 2-hour segments. The following year, CBS aired an edited version of the miniseries in one 3-hour segment.

Can someone please explain what is going on and what is the "true" length....

If this has been discussed in another thread, please advise as I did use the search and was unable to find anything...