通过Flash提供最高质量视频体验的最佳提示/最佳做法是什么？

Please describe some of the best practices for delivering video over the web through Flash Player. For example I am encoding video in FLV at 320x240 pixels, this seems to be the best size for reasonable quality and best filesize. When playing back I have a number of different video components that play the video in a few different sizes.Please describe some of the best practices for