This query is perhaps a bit off-topic, but since the intent is ultimately to insert the resultant video back onto my Series III units, I think it is sufficiently on topic to post here. From time to time I create slideshows and burn them to DVD or upload them to the TiVo. Here is an example of one of them:

The thing is, I now want to be able to encode these as 1080i HD, rather than 720 x 480i, which is the best the application I use (ShowBiz DVD) can manage on a TiVo compatible file. Does anyone know of a well featured slide show program which can write 1080i MPEG files? I really don't absolutely need much other than the standard crossfade transition, but I do want an easy to use media interface for selecting, sorting and timing the audio and video and for previewing the results.