I had the same problem. After I read on here that you can see the movie in the iTunes media folder on your computer, I went straight there. Sure enough, there was the movie I had been trying to import was in the Home Movies folder. So, I went back to iTunes and I did File>Add To Library>iTunes>iTunes Media>Home Movies and clicked on my file. It showed up instantly in my iTunes library. All I had to do was change it from a Home Movie to a Movie in its settings. This is an annoying glitch, but I have tried this method several times and it works like a charm.
Are running Mac OS 10.8x? I noticed painfully slow video scanning performance in iTunes 11 when on 10.7.5. Now iTunes is scanning my new videos much faster, though still a little slower than with iTunes 10, after an upgrade to 10.8.
I made a simple video tutorial for "Adding Your Own Videos into iTunes"
I have had and resolved all the above reasons you cannot import a movie into itunes. Here is a new one.
Go to Prefrences>Advanced>itunes media folder location. If the proper location is not listed itunes cannot import anything. This is important always but more so when you have multiple hard drives. I use several 4 tera byte hard drives. itunes media folder points to the Music which contains an alias Movies which points to a different hard drive and also contains an alias TV Shows which points to a third hard drive. That enables me to have a seperate 4 terabyte hard drive for each catagory. Soon I will need all 6 terabyte hard drives...it never ends, it only gets bigger....
I just deployed iTunes 11.2 - a fresh install - to my Windows 2008 server so I could use Home Sharing for my movies, TV shows, and music. When I installed iTunes, I imported the folder where all my media was (including the Movies subfolder, etc.).
Music, TV shows, and podcasts all imported but not the movies. Weird. I manully tried to import a couple of the movie files. Nothing. The little "importing" progress window opened, but nothing showed in iTunes.
SOLUTION: When I downloaded iTunes, I ONLY got iTunes. I needed to also run the Apple Software Update software to install Quicktime. After that installed, I was able to import the movies into iTunes.
Thought I'd let you all know in case this helps anyone.
OMG - thank you apple for making this sooooooo hard. After waiting 2 days for the videos to appear in itunes (the files were in the corect file structure - nothing!!!!
But a huge thanks to GogoGadget69 - your solution was the only that worked for me.
I had to import file to library first - and it added it to the Recently Added section. Then I did your Get Info and change to Movie - finally they are there. Starting to thinknever do another itunes update! I cant be bothered re-learning how to do these things