iTunes could not copy "file" to the "iPhone" because the file could not....

I recently downloaded a few episodes from the iTunes store through my iPhone. All episodes worked fine until I synced my phone with my Mac. After reorganizing some music, I found that I had to place all the tv shows back into the phone. However two episodes would not sync. The error messages:

iTunes could not copy "file" to the "iPhone" because the file could not be read or written.

Attempting to copy to the disk "iPhone" failed. The disk could not be read from or written to.

Syncing everything else works perfectly fine. I am under the impression that these two video files are corrupt. What's strange is that they worked perfectly fine when I downloaded them directly on my iPhone. The "corrupted" videos DO play on iTunes, but they will freeze. I have to skip over that particular time in order to play the video.

So my question(s):
Are my files corrupt? How would I go about to fix this issue? Is there anyway I can place the SD versions of the videos instead the HD ones (Given that it's even possible)? I would hate to spend money again to re-download these episodes because I was provided with incomplete files.