I'm trying to add the captions but it doesn't show up in the saved file.

Here's my method:


1. Open Text File
2. Open Movie
3. Select all/Copy Text File on Text Window
4. Add to Movie on Movie Window

It shows up in Quicktime, then I hit Save As Self Contained Movie, but it doesn't show up in iTunes or anything. I'm really confused as to what I'm doing wrong.