Thanks
Had a look at their services, but they are quite expensive. I finally decided not to stream the trailers but to make them available for download.The best I could do was to compress a 7MB quicktime to 2.7MB FLV, using Sorenson Squeeze (http://www.sorensonmedia.com/) but even this is not practical for Progressive download, not to mention the low image quality. Anyway, for those looking for video compression, I would recommend this software.It's quite expensive though.