Difference between .mov files and .dv files?

I am normally a FCP 4.5 user but I just got the new Macbook Pro and need to capture some footage this weekend using iMovie. Is there any difference between the .mov files we capture with FCP and the .dv files captured with iMovie as far as compression or quality?
I've looked and looked but can't find the answer. Thanks!
MacBook Pro Mac OS X (10.4.5)

Hi there. can you explain this a bit more ?
"you can scrub audio over a .dv clip in a sequence"
and explain why the .dv video is so doggy in fcp hd?
so,you CAN NOT convert .dv to fcp - right? or .mov to fcp?- right
Here is my experience with iMovie, .dv files and
FCP.
iMovie can be useful, because it breaks DV clips up,
and handles time code breaks - by ignoring them!
I had canon camera, which if I captured with FCP, the
audio would drift over the hour capture - it was over
a second out by the end of the tape, so I used iMovie
instead.
Dropping .dv files into DV FCP sequences does not
require a video render or transcode - the original
image quality is maintained, but will require an
audio render to stop the audio 'beeping' during play
back - it seems an arbitrary limitation to me, you
can scrub audio over a .dv clip in a sequence, and
you can play audio when the .dv file is in the
viewer, but not from a sequence.
Then - it gets more annoying - every edit you do,
typically requires a re-render of the audio, if you
don't want the beeping, but there are two tricks
that can help: 1) make a sequence for each .dv clip,
unedited, render the audio in that sequence, then
edit that into the master sequence, or 2) use
'extract audio' in iMovie, then find the .aiff in the
Media folder, and replace the .dv sourced audio with
that in the FCP timeline.
There is no re-capture, as Shane says, you have to
stay on disc forever, or risk having to tweak and
re-trim your project, if you hope iMovie will create
the same files on a future capture - I have never
tested that, my guess would be no.
Most of the folks on the board will dismiss such a
workflow - and with good cause - but its not totally
useless, in certain circumstances.
I have not tried this with the iMovie in iLife '06 -
so your mileage may vary. Ideally, the beeping audio
from .dv would be fixed in FCP - I understand it is
harder to extract and play from a .dv file, but we
have fairly powerful machines, these days, and,
iMovie seems to manage just fine
Good luck!
iMovie was what got me into Macs in the first place,
and after my first 'home movie editing appliance'
(also known as an iMac G3) I started to do less and
less on PC's, and have not tried to edit video on one
since.

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