DVCProHD via firewire question
by CapturedLive
on
Apr 2, 2006 at 12:28:42 am
We shot a concert with 6 XLH1 cameras going to 6 Decklink HD systems via HD-SDI and captured using DVCPROHD. We need to lay back the captured camera-master footage to tape for archival purposes, and I was wondering if we rented a DVCPROHD deck that had firewire, would we avoid going through the codec twice, or is transferring via HDSDI just as good. Has anyone done this? Thanks so much.
Re: DVCProHD via firewire question by fXholt on Apr 7, 2006 at 7:37:27 pm
Since you are already in the DVCPRO HD codec, I don't think you gain anything by using HD SDI. I use the Panasonic 1200A deck, and a while back when I was making a DVCPRO HD tape of an uncompressed HD sequence, I asked a Panasonic engineer if I should render it into the DVCPRO HD codec and firewire it out, or just play back the uncompressed signal to the deck via HD SDI, and he told me it was the same either way, I would just be choosing wherther to add the compression in the deck or in the computer.
Re: DVCProHD via firewire question by CapturedLive on Apr 9, 2006 at 3:49:27 am
Yes, but you were using uncompressed material as a source, so the deck would make it DVCPROHD if you went in SDI, or the computer would do it via firewire. My material is ALREADY DVCPROHD, so if I go out SDI, the computer will be up-converting it to "uncompressed" to go out the SDI and then the deck will recompress it. If I go firewire, I get the feeling it's just a straight data transfer. Is this true? Seems to me there is quality to be lost if I go SDI...
Producer / Technical Supervisor
Captured Live Productions
www.caplive.com
