View Full Version : XL H1 HD-SDI mobile capturing - again


David Zimmer
October 2nd, 2006, 02:29 PM
Hi!

During the last days I red nearly all threads about recording XL H1's HD-SDI signal on the field. Result was that there was no practical solution until June (http://www.dvinfo.net/conf/showthread.php?t=69872).

But since September there might be another solution:

All Decklink cards can capture in the "better than HDV" Decklink codec named "Online JPEG".
(http://www.blackmagic-design.com/press/detail.asp?pressID=85)

Advantage: No RAID system required.

Can't we use an up-to-date laptop (fast processor) with a Expresscard-To-PCI adapter (like http://www.mobl.com/expansion/products/expresscard_expansion/1slot/index.html), a Decklink PCI-X card and achive a much better quality than HDV on the field?

Has anybody tested a system like this?
Will the system be able to compress and transfer the data fast enough?
What are your thoughts?

Michael Galvan
October 2nd, 2006, 05:46 PM
This would be an ideal workflow, but ...

Some issues could be:

1. THis only seems to work with PCI-based cards, not PCI-X or PCI-Express. I don't think there are any PCI capture cards that can capture uncompressed HD. There isn't enough bandwidth ... you would need at least PCI-X or above.

2. The compression would happen once it hits the CPU of the laptop, so therefore the 1.485Gbp per second data rate of what comes out of the HD-SDI spigot may be too much or something like this handle. The pathway to the CPU has to be fast enough for this and I don't know if this can do it ...

PLEASE someone prove me wrong as this looks like a nice solution for my Macbook Pro.