I have created a small number of video files--animations actually. They are .mov files saved as mp4. I have tried codecs for animation, h.264, and mpeg 1 and 2. No matter which options I choose for export of the video files, when I place them in a playlist in BrightAuthor and publish the presentation to the XD1230, two of the files play perfectly, while the others all truncate on playback. That is, they begin playing, but after about 2 seconds, the next file in the list begins playing. The files are all around 5 seconds with the exception of the first, which is bit longer. I am attaching the files in case someone with more experience than I can see what's different about them. The files ahorre.mov and textos.mov are the two that play correctly. The others play back perfectly in both Windows and Macintosh, but not on the XD1230.
ahorre.mov
dollarphone.mov
espanolTravel.mov
social.mov
textos.mov