Sharing of display content amongst different display device such as laptop, desktop, handheld computers and smart phones (IPAD) is needed for collaboration. Because of different architectural, sharing of display content is complicated and the performance is very low. By using special media stream formats, the complexities and performance bottlenecks is reduced or avoided. Display content is encoded by continuous media, and a media server processes and distributes customized or fixed rate streams to viewers by streaming it to the media server, and playing it back on up to 1000 clients distributed over 20 computers. The CPU load is below 40% on the server.