Quote:
>Decks like the 1500, when using SDI actually bypasses the firewire degradation, and since it comes right off the TBC it is >being “psuedo” upsampled to 4:2:2. That’s one of the reasons it looks so clean…
Firewire doesn’t cause any degradation in and of itself. There’s no encoding or decoding going on during the send over firewire. It’s just a data stream off of the tape, much like a hard drive. The degradation comes from the codec on the receiving end. SDI recording looks clean because you’re using the uncompressed codec, Apple’s DV codec, though fine on a consumer level, is dirty under technical analysis. As I wrote, I’ve seen tests that actually verify this. An outboard converter is just doing what the 1500 is doing inside the machine. As long as the converter is of good quality, there shouldn’t be any perceptible difference. If you know otherwise, please explain!
-mjd