My method may seem a little archaic, but it has never failed me once. I build my animations as a series of pict files, which are then converted to QTvideo in MooVer with the settings of Photo Jpeg/Best Quality. The resulting file is definitely broadcast quality, as its worked for more than a few years now with no complaint from either broadcasters or clients. I just spent yesterday finishing a 1:15 animation of a scene from The Fantasticks, using imported QuickTime footage for the background and rendering at (horrors!) 10 fps. The final file size, including sound, is about 75 megs, and the transfer to video this morning was crisp with good stereo sound.