Renaming movies causing Itunes to freeze (sort of a fix)

Question

When I tried renaming movies in Itunes, it would freeze, leaving me no choice but to force quit. I originally went on here asking for help. I tried deleting the movie, renaming the file, and adding it back. Nope. I had to edit some clips in Movie Maker anyways, so while importing, I made sure the name was what I wanted. Nope again. Then I deleted my trash because I was sure my old movie files were in there. However, unlike deleting music, where it asks to keep the file or move to the trash, it'll delete the movie, but the file won't be moved to the trash. I assume this until I did a quick command+F to find the old files of the movie. I moved those to the trash, then emptied it. For some reason, I have duplicates of the same exact file, so make sure you don't accidentally delete the one you need. *(I found this helped: 1. move the file you need to a folder 2. Right click, check "get info" and move only identical ones (by date and time) at a time to the desktop. If the names are the same, it'll ask something about replacing the file. Say yes. 3. Move to the trash.
TL;DR delete the file from Itunes, find old files of the mp4 file on your computer, move those to the trash, make sure you're not deleting the ones you need*, empty the trash, add back into Itunes.
Unfortunately, I wasn't able to find anything for Itunes freezing up- I think that's something Apple has to fix (I even updated Itunes). I just found how to rename a file, which unfortunately, is not the click-once-and-edit-on-the-spot way, but hey, it worked. Honestly, I don't see it being fixed anytime soon.

Answer 1

If Itunes match fails to complete its scan process and is stuck in steps 1, 2 or 3 the following steps usually clears problems:
1. Hold option key (Mac) or shift key (PC) whilst turning of match. This clears genius/match cache.
2. Close iTunes. Optional - Reboot computer.
3. Open itunes and turn on match. Select "add this Computer" and see if process completes.
If you see the following when you go into the match screen and it has been likes this for a while, I suggest that you stop process and go to menu > store and select  update Itunes match:
You should see this if you progess on from "Sending information" to "waiting for Apple.. This should happen within minutes:
You should also add icloud status column to song view - go to menu > view> view options and tick box. This will tell you what has been Matched, Uploaded, Purchased, Inelligible, Duplicate or Waiting.
Tracks that are "Waiting" may include one or more corrupt tracks. You may have to remove all "Waiting" tracks from your library as it is not always clear which ones are causing the problem. Large / Long tracks that will be uploaded may be the cause of the problem.
Once you have removed the tracks, follow steps 1 to 3 again and see if process completes. You can then readd the tracks, a small number at a time until all your music is added.
If problem persists, you should consider creating an alternative itunes library. http://support.apple.com/kb/ht1589.
This creates a new blank library. Turn on match and Select "add this Computer". Once process is complete you will see all the music that you have in match. If you see tracks with "waiting" Icloud status and are "greyed out", this may be the reason why the match process does not complete. Delete those tracks and go back to your original library. You may need to follow steps 1 to 3 above again.
Jim