If you have miniDV camera, the compression used is 5:1 or there abouts using intraframe compression. When you "transfer" from your camera to PC using a firewire cable,
you won't be 're-compressing' so won't lose quality. To say that capture reduces quality on digital transfer by firewire by 50 % is wrong. So what you see on your camera compared to your end result is the quality loss from encoding to SVCD - this is typically most obvious in "blocky artifacts".
Solution? Invest in a DVD burner
