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Hello!
I am pretty new when it comes to Nuke, and node based compositing.
Anyways here is my question:
I`m trying to merge two clips, I want clip A to be over B.
But instead it displays as a overlay, similar to photoshop and after effects.
The Node three is similar to this:
Clip A Clip B
| |
| |
Bezier Bezier
| |
a b
Merge overI`m sure this question have been answered several times, but I tried search and could not find exact what I was looking for.
You can put a screenshot of you nodetree and viewer of merge?
In Fusion nodes have a different color for any connectors. In merge node, yellow is a background image and green is foreground. Blue connector is always used for mask input.
By default, Fusion merge node used “normal” blend mode, that is Nuke “over” mode. FG is top, and not blend. You can change blend mode to overlay if you want.
Fusion is more simply when works with channels than Nuke. When you need affect a specified channel and operator is not allowed option (i.e. R,G,B,a) use a Channel Boolean to extract any channel.
In Nuke, the most operators included a high channel control, besides of you can called up to 1023 channels name, and use Shuffle op to extract or convert any channel.
Hi,
you are trying to merge two RGB images which has no Alpha channel. If the clip with the Bezier node or (rotopaint) node is above in the merge operation, simply put RGBA in the “Premultiply” field.
If you don’t have any Bezier tool, you can put a transform node in order to give 4 channel output to work with Merge (over) function properly.
If you simply need to display one image over the other, you can turn off the Mix amount at the bottom of the merge node.
Hope this will work.
Hi,
you are trying to merge two RGB images which has no Alpha channel. If the clip with the Bezier node or (rotopaint) node is above in the merge operation, simply put RGBA in the “Premultiply” field.
If you don’t have any Bezier tool, you can put a transform node in order to give 4 channel output to work with Merge (over) function properly.
If you simply need to display one image over the other, you can turn off the Mix amount at the bottom of the merge node.
Hope this will work.
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