http://www.flvsoft.com Flash video（FLV） solution for business use and personal use! Thu, 20 Nov 2008 01:45:22 +0000 http://backend.userland.com/rss092 en 1. Q: I am not sure what I would use the alpha channel for. Would it be used for transparency? A: If your original video has the alpha effect, the video encoder can choose flash 8 with alpha. As to how to make the original video with the effect of alpha, ... http://www.flvsoft.com/video_to_flv_faq