I import a video into flash, I add another layer and some text, I choose mask for the text layer whcih masks the video, both layers lock and now I have my company name with some swirling smoke inside the letters. Looks great. However, when I test the movie all I see is the smoke video. Everything works great on the stage, why would it fail when I test it?
your text is not static and you failed to embed the font?
If you are using dynamic text then first-of-all embed then then try to mask. If you are getting problem to mask on layer try to use script. aa_mc.setMask(movie)