Don't Buy Into These "Trends" About pdf to pdf/a
http://keeganzhkk914.image-perth.org/10-tell-tale-signs-you-need-to-get-a-new-pdf-to-pdf-a
It takes advantage of Macromedia flash conversation server for its good quality audio movie compression. You'll be able to change the camera bandwidth/compression and high quality for flash movie chat as per your