I have a number of old mini-DV tapes that I would like to import into my Macbook. All I want to do is for an app to read the contents of the tape and produce a single MP4 combining all of the clips on the tape or multiple MP4 files of the separate clips on the tape. I tried using iMovie for the fist time and found it to be overkill for what I need. It imported the contents of my tape as multiple .dv files and then I have to create a project. I don't want to deal with that. I simply want to import the content of tapes and store it on a drive so that I can watch the content on Macs/Windows/Linux/multiple-platforms.
Connect your camcorder and use iMovie HD to import the tape, then export using Share>Quicktime. It will create one file out of the tape.
Edit: In response to Sajee's comment below.
Choose Share>Quicktime>Compress movie for: Full Quality. As implied, there won't be any loss of quality.
I have an older Canon Mini-DV camera and the process was quite painless when I brought the video in to my Mac.
The Mac will open up an import dialog when you connect the camera and ask if you want to import the video in to iMovie. Say yes and iMovie's import feature will take over. It will start the video play back on your camera and you'll see it saving the video content to disk on your Mac. IIRC the import was real time (or very near too it), which is unfortunate. But really it was that simple.