[gasto]

When opening video->frames modify and hovering the mouse over the layer selection field, one can read an example indicating that the layers can be chosen with 1, 3-5

My question would be, how would I do the same but choosing layer names(starting, ending or containing the specified names). I tried with commas and hashed separated string(text) values but to no avail. By layers specified as name text, I can only choose one(layer) on the specified frame range.

[ccbarr]

gasto, on 14 September 2011 - 12:34 AM, said:

When opening video->frames modify and hovering the mouse over the layer selection field, one can read an example indicating that the layers can be chosen with 1, 3-5

My question would be, how would I do the same but choosing layer names(starting, ending or containing the specified names). I tried with commas and hashed separated string(text) values but to no avail. By layers specified as name text, I can only choose one(layer) on the specified frame range.

gasto,

In the Frames Modify dialog window, you can enter specific layerstack numbers or a single string to be used as a pattern for layers to be modified. If you have layers, for example, named red, green, and blue, and you wish to select layers red and blue, you cannot use one of the layer name pattern selections (ex. Pattern is equal to layer name) for the Layer Selection while typing in the string:

red,blue

In the above case, Gimp would look for a layer named red,blue. Remember, you can use comma's, hyphens, etc. in your layer names. So Gimp would not use the comma in those cases to look for each separate layer name. So, ultimately, you would need to select layers red and blue using their layerstack numbers.

However, let's say that you had layers named red circle, red square, red triangle, blue circle, blue square, blue triangle, green square, green triangle, and green circle. That is a total of 9 layers. Now, you have the possibility to select multiple layers by various patterns.

Using Pattern is start of layer name, you could enter the string red. Now, all layers starting with the word red will be selected for modification.

Let's say you used Pattern is end of layer name. Then you could enter a text string like circle, and all layers that end with the name circle would be selected for modification.

But if you wanted to select say the blue square, green triangle, and red circle layers for modification, then you would have to resort to using the layerstack numbers pattern selection and in that case, you can select specific layerstack numbers over whatever range of frames you are working with.

Before setting up your animation, it helps to decide if you will want to make modifications on certain layers in a frame, and if so, then to think about how you will need to name those layers so you can select groupings of layers.

Your question is a very good question because sometimes in an animation, using the above example, you might have a layer named red circle at layerstack 2 in some of the frames, but in layerstack 0 in other frames. Therefore, attempting to modify the red circle layer using layerstack numbers is more complicated than just using some pattern from the layer name.

I hope this information can help you some.

This post has been edited by ccbarr: 22 September 2011 - 03:29 PM

[gasto]

Thanks for the help.

Another tightly related question:

How come the layerstack numbering in GIMP GAP's video->Frames Modify
 FramesModifyQuery.jpg (90.86K)
Number of downloads: 2
 AfterFramesModify.jpg (95.87K)
Number of downloads: 2
and other functions is represented from 0(uppermost) to n(lowermost),
whilst in the filters->animation->playback and filter->filter all layers, the layerstack numbering seems to be represented reversely; from 0(lowermost) to n(uppermost)?  GIMPLyrstck0.jpg (63.01K)
Number of downloads: 2
 GIMPLyrstck1.jpg (63.81K)
Number of downloads: 1
 GIMPLyrstck2.jpg (64.48K)
Number of downloads: 1

[ccbarr]

gasto, on 04 October 2011 - 12:39 PM, said:

Thanks for the help.

Another tightly related question:

How come the layerstack numbering in GIMP GAP's video->Frames Modify
FramesModifyQuery.jpg
AfterFramesModify.jpg
and other functions is represented from 0(uppermost) to n(lowermost),
whilst in the filters->animation->playback and filter->filter all layers, the layerstack numbering seems to be represented reversely; from 0(lowermost) to n(uppermost)? GIMPLyrstck0.jpg
GIMPLyrstck1.jpg
GIMPLyrstck2.jpg

gasto:

I do not have an answer for that one. That would be a question to ask whomever coded GAP. I do not think the same developers coded GAP and GIMP. saulgoode may have some insights for you on the reason for that difference. You may wish to try to contact him either here or over at gimpchat. Another possibility might be to check the GAP docs to see if an explanation is there for the difference. Sorry I don't have the answer for that one.