WHAT HAVE WE LEARNED FROM STREAMING VIDEOS IN THE VISUALAB [091117] • Streaming with ion will work properly only when it is the only task required of ion. Browsing should be done with another server (apo). • Streaming with eon will work properly only when streaming flv format. • Streaming with Adobe Flash Media Server is slightly better than with Real Networks Helix. • Video compression with Final Cut Pro is not enough for many users. Additional compression with Squeeze is necessary. • Compression to 1M, 768K, and 512K will usually be sufficient to satisfy a wide range of users. • Viewing quality varies with the installation (internet connection speed), with optimal sound and video for most users at 768K. • Squeeze will sometimes fail to compress a video properly. Always check output file size to confirm or deny compression. Correct problem by restarting the computer. • A user may want to choose the data rate (V, H, M, or L) that best matches his/her internet connection speed. • Generally, the higher the connection speed, the higher the possible, or acceptable, throughput data rate. • We capture videos using a Canon HD camcorder. • We edit videos with Final Cut Pro. • We convert mov to flv format using Xilisoft. • We encode (compress) videos using Sorenson's Squeeze 6. • In ion, we stream media with Adobe Flash Media Server using RTMP (Real Time Messaging Protocol). • In eon, we stream media with Real Networks Helix Server using progressive download (HTTP).