Slowing down and normalize a movie clip

Hello everyone.
I’m having this doubt about retime.
My objective is simple, just want to slow down the initial 50 frames an the last 50 I want to leave them in normal speed.
I’ve started to use retime i think this is a good solution right?
I’m not quite understanding the input and output parameters.
I already read the help but the explanation was a little bit confusing.
Hope someone can explain me this a bit, please.
Cheers

Python to Get all nodes in a backdrop

Hey All,

Need a hand with something I am writing up in Nuke.

I have a bunch of nodes in different backdrop nodes, and I am trying to set something up that will export out each backdrop as it’s own nuke script.

I was hoping to be able to just select the backdrop nodes with:

(backdrop node).knob(‘selected’).setValue(True)

But that only selects the actual backdrop node itself and does not react like when you click on the backdrop itself in the GUI and it selects all the nodes the backdrop contains.

Anyone have any idea how to do that by chance?

Thanks in advance.

-HR

Alpha Issues with camera projection

Hey all.
I am projecting an immage that that is broken up into its individual layers from photoshop onto cards. eg: skies on card1,Mountains on card2,hills card3 and town buildings card4.
All the immages have alphas and i am projecting from a single cam.

The immages all seem to "bleed" into each other like the alpha is general throughout the individual immages and i end up with a mess.
Any ideas?

Thanx
K.

stereo with 3d cam + zdepth ?

hello,

is it possible to kind of fake a stereo render from a 2D rendering when you have the 3D position of the camera + zdepth + Normal pass ?

Thanks

No such file or directory

I have a very strange problem.
I’ve started a compositing on some water shapes that I’ve done.
My first step was to unite all the different passes that I’ve rendered from Maya in one single openExr file in Nuke.
Success.
This was made in my laptop.
When I changed to my desktop I opened the file but my Read node had an ERROR message. I reorganized the file directory but for my surprise the ERROR still maintained. I created a new read node and the message continues to appear. I dragged and dropped the image folder and the error still appears. I opened After Effects to see if there was any problem with the images but everything was ok.
Why is that? Never happened with me before.
Hope someone can help me here.
Cheers

I’ve changed the name of an single image and it accepted it.
Do you think that the problem is related to the number of words that the file has?

Comping render passes w/o exr file?

Newbie question. I see a lot of tuts for multipass compositing CG elements using exr files but what if I just have each pass separately?

I know you use the merge node to connect the passes but I am a little unclear on which operation to use for which pass, and in what order.

Can anyone tell me the best way or provide a screen shot. I’m just using a few passes: defuse, ambient occlusion, specular, shadow, lighting, and reflection.

Thanks!

rotopaint stupid question

i know sound really stupid, but im importing a footage with alpha and i want simple to mask a part couse will not be visible, i apply a rotopaint, and magically doesnt go away!! ive try putting aoutput to alpha and premultiply to everything but i can cant mask out that part, its allways or visible or maks everything with white…
someone have a explanation? i can understand that roto its not considering my alpha but apply one after its applied!!
thanks for any help

Syntheyes to Nuke, pointcloud problem

Hey guys,

When I try to export my Syntheyes scene to Nuke, I have two problems.

1: Upon import I get the error that the Camera01Render.filtering_enabled knob doesn’t exist, and that the Camera01Render.false is missing a value. The Camera01.Render refers to the scanline renderer node from the syntheyes script. When I click the error away, it imports everything as it should.

2: The points appear very small in the 2D view (when viewing the scanline renderer/Camera01Render). Increasing the trackersize in the Trackers node doesn’t work. And more important, the points don’t appear anywhere in the 3D view.

Some extra info:The camera seems to work, the planes I’ve imported also seem to work. I’ve exported the syntheyes scene with renderable trackers.

When I export it with non-renderable trackers, I get the same error, only difference is that there has been a plane parented to the camera which shows my plate, and the trackers are converted to axis (which do show up in 3D).

Anyone got an idea how to get the export with renderable trackers working ?

takes multiple tries to get the render started…

I set my frame range and hit render, and nothing happens, try it like 10x and sometimes it’ll start. Disconnect the viewer, sometimes that gets it to start, sometimes it won’t – real weird.

Also I get messages like this when it doesn’t work –

"RotoDrawIop in wipe: get(channels=0xf), but request() not called."
"RotoDrawIop in DoorFrame: get(channels=0x4008), but request() not called."

What’s that mean? Funny thing is, I won’t change anything and it’ll just start rendering sometimes…

Changing Existing Node Parameters, using Python in Nuke

Hello there,

I’m attempting to streamline my work flow in nuke by using Python to change existing node parameters globally. In this case I have laid out various "Card3d" nodes and I want to change all the motion blur parameters in one fall swoop.

So here is what I’m inputting in the script editor:

c = nuke.allNodes( ‘Card3D’ )
c["motionblur"].setValue (2)
c["shutteroffset"].setValue (0)

this is what the script editor outputs:

c = nuke.allNodes( ‘Card3D’ )
c["motionblur"].setValue (2)
c["shutteroffset"].setValue (0)
# Result: Traceback (most recent call last):
File "<string>", line 2, in <module>
TypeError: list indices must be integers

I’m a noob when it comes to python so I’m in a bit over my head. What I gather from this is that my syntax is wrong and I can’t give allNodes a variable… atleast not the way I’ve written it. Any thoughts or suggestions would be greatly appreciated!