I've been trying to include text in a SMIL movie that I save as a .mov and play in Quicktime. Including a .txt file works, but I couldn't markup (bold, italics, ...) the file. Finally I figured it out. QuickTime Text Descriptors like {plain} can be used to markup text (fonts, bold, how long to show pieces of text, ...) you want to include in a SMIL presentation for Quicktime (Quicktime doesn't do HTML markup).
# Jul 15, 2004