04-03-2006, 03:09 PM
|
|
Senior Member
|
|
Join Date: Jan 2006
Location: Georgia, USA
Posts: 721
|
|
Quote:
|
Originally Posted by kolponik
Both Firewire and USB2 have top transfer rates of about 50 MBps (USB2 being just a little faster).
|
The IEEE1394-1995-a specification provides for 400 Mbit/s (50MB/s) transfer speeds with the updated IEEE1394b "Firewire 800" doubling that.
USB 1.1 allows a maximum transfer rate of 12Mbits/s. USB 2.0 has a raw data rate at 480Mbit/s but the effective rate is only 40MBps or up to 320Mbps for bulk transfer to/from a USB 2.0 hard drive with nothing else sharing the data bus.
http://www.everythingusb.com/usb2/faq.htm
It's a little tricky looking at "mbit/s" vs. "MB/s". I looked around to see what the data rate should be for realtime DV transfer (about 30-35MB/s?) but I couldn't find a quote.
Quote:
|
A big advantage of tape is reliability. Tape mechanisms have proven to be more reliable and not as prone to failures due to vibrations or shock, as hard drives.
|
One poster with a HDD camcorder pointed out that his recording media is fully sealed and never exposed to dust, sand, or moisture. He argued that made a HDD more reliable from that aspect. I you lived in the desert or on a beach, that might be a major benefit.
Anyway, if I'm going to deal with the MPEG2 format, then it better be HDV2 so that I'm getting 25MB/s throughput and high-resolution in return. Various editors here on CCI have talked about hard drives being the future for camcorders but I don't myself see why that would be the case. Personally, I vastly prefer tape for the reasons you gave.
|