XL H1 HD-SDI mobile capturing

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/pre...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/produc...ot/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.

October 2nd, 2006, 02:29 PM	#1
David Zimmer Tourist Join Date: Sep 2006 Location: Munich, Germany Posts: 1	XL H1 HD-SDI mobile capturing - again 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/pre...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/produc...ot/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?

October 2nd, 2006, 05:46 PM	#2
Michael Galvan Major Player Join Date: Sep 2004 Location: New York, NY Posts: 775	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. __________________ www.michaelgalvan.com www.screenanthology.com