Scott Fitzgerald

I know some of you have these in your machines, I was wondering if you

could shed some light on their usage w/r/t Jitter.

Is it easy to bring the card's foootage into Max? Like as easy as

using qt.grab, or is there somehting else needed?

Is there any latency involved (with the 4:4:4 model)?

Are there any hints/ tips/ things to watch out for when using these cards?

and, from a purely crazy talk perspective : anyone with these cards do

realtime compositing with gl.slab and the hd input?

thanks in advance, and sorry if some of these questions have been

addressed in more detail than my cursory searches revealed.

I know some of you have these in your machines, I was wondering if you
could shed some light on their usage w/r/t Jitter.

Is it easy to bring the card's foootage into Max?  Like as easy as
using qt.grab, or is there somehting else needed?

and, from a purely crazy talk perspective : anyone with these cards do
realtime compositing with gl.slab and the hd input?

thanks in advance, and sorry if some of these questions have been
addressed in more detail than my cursory searches revealed.

blackmagic-decklink-hd-card-jitter

The decklink cards dont have hardware GL.. so doing openGL output on 

I dont have one, but I picked that up from the list.

I LIVE! I LIVE! I LIVE! I LIVE! I LIVE! I LIVE! I LIVE! I LIVE! I 

You will not be saved by the Holy Ghost. You will not be saved by the 

The decklink cards dont have hardware GL.. so doing openGL output on  
them is slow - software mode..

I LIVE! I LIVE! I LIVE! I LIVE! I LIVE! I LIVE! I LIVE! I LIVE! I  
LIVE! I LIVE! I LIVE! I LIVE!

You will not be saved by the Holy Ghost. You will not be saved by the  
God Plutonium.

well, i'd be using the built-in nvidia card for that render poop. the

deckling would just be for capturing purposes.

the poorly phrased question was about using shaders on hd footage. and

if there was any sort of discernable hit vs standard def.

well, i'd be using the built-in nvidia card for that render poop.  the
deckling would just be for capturing purposes.

the poorly phrased question was about using shaders on hd footage. and
if there was any sort of discernable hit vs standard def.


On Mar 14, 2006, at 11:37 AM, Scott Fitzgerald wrote:

> well, i'd be using the built-in nvidia card for that render poop. the

> deckling would just be for capturing purposes.

> the poorly phrased question was about using shaders on hd footage. and

> if there was any sort of discernable hit vs standard def.

Provided you have a decent GPU (NVidia 6800, ATI X800 or better), 

bandwidth is going to be your biggest bottleneck.

On a Dual 2.5 GHz G5 we've been able to decode 2 1280x720 uyvy Phtot 

JPEG streams from disk and composite with shaders with room for 

additional shader processing maintaining more than 30fps. And a 

single 1920x1080 stream with a handful of shader based post 

processing @ 30fps. Coming uncompressed might be even faster if the 

> well, i'd be using the built-in nvidia card for that render poop.  the
> deckling would just be for capturing purposes.
>
> the poorly phrased question was about using shaders on hd footage. and
> if there was any sort of discernable hit vs standard def.

Provided you have a decent GPU (NVidia 6800, ATI X800 or better),  
bandwidth is going to be your biggest bottleneck.

On a Dual 2.5 GHz G5 we've been able to decode 2 1280x720 uyvy Phtot  
JPEG streams from disk and composite with shaders with room for  
additional shader processing maintaining more than 30fps. And a  
single 1920x1080 stream with a handful of shader based post  
processing @ 30fps. Coming uncompressed might be even faster if the  
PCI slots are fast enough.

On a somewhat slower G5, I'm doing 2-4 streams (depending on codec) 

at 1280x720 (h.264 jpeg or yuv - ordered from most to least costly) 

with compositing & effects (approximately 12 instances of 

jit.gl.slab) single stream 1080i works too. there is probably room on 

the gpu for more. read/decompression seems to be my bottleneck on the 

slower cpu, Dual 2.0 G5, ATI x800, 3 disk sata)

On a somewhat slower G5, I'm doing 2-4 streams (depending on codec)  
at 1280x720 (h.264 jpeg or yuv - ordered from most to least costly)  
with compositing & effects (approximately 12 instances of  
jit.gl.slab) single stream 1080i works too. there is probably room on  
the gpu for more. read/decompression seems to be my bottleneck on the  
slower cpu, Dual 2.0 G5, ATI x800, 3 disk sata)

i'll let y'all know how it turns out, though it sounds like everything

i'll let y'all know how it turns out, though it sounds like everything
will work out well.

Blackmagic DeckLink HD card + Jitter?