MikeD

The latest in fast transmission for video is H.264 video CODEC. This is an MPEG4 derivative CODEC and is intended specifically for fast transmissions speeds. I would search for a system that has this as a video coding option. My next best suggestion would be a variable bit rate MPEG4. Both options are readily available in the market. In addition look for systems that allow you to reduce frame rate, resolution (size) and quality. I think this thread is for embedded units though you mention an PC card in your post. If you are looking for embedded systems, I'm not familiar with any H.264 ones that I really like. I know GSP has a nice MPEG4 version. My company 3xLOGIC and many others make a PC based system that supports H.264 as well as MPEG4 with the variable bit rates, resolution etc. etc.. that will enable a user to 'tweek' the best possible image quality and speed for their needs.