get one of the new Sony camcorders that record direct to SSD in mp4 format. then just burn it to dvd.
I found a logitech 9000 for 39.99 and then went and found a coupon that had free shipping and 5% off so bling bling.
yeah, but if your serious, there isn't anything quite like recording in Full HD (1080p). that 9000 doesn't even do 720p and has 2MP. if you want to do something of quality for classroom online presentation at least try the logitech c910 (10MP, Full HD recording, 720p live video). only $100.