Apply alpha channels

Similar Questions

• How to re - apply a mask after changing the alpha channel?

  Hello

  I am writing a plugin that modifies the alpha channel of the layer.

  My problem is I want the mask effect to apply after my own effect.

  For example, I found a few pixels that were originally invisible (their original alpha is 0 and I put it to the maximum), but I don't want to reveal the pixels that are killed by the mask.

  I tried to use PF_MaskWorldWithPath, but how do I find the values that are used for the feather and opacity?

  It seems possible to find them using AEGP_GetNewMaskStream, but I could not find any description of how to interpret the results, not to mention that it's very complicated to get all the handles that are required to use this feature because my plugin is not CEAP.

  And on top of that, it doesn't seem to be a way to simulate the extension mask feature.

  No idea how that was possible?

  Thanks in advance!

  My friend

  you have stumbled upon something large and problematic.

  Let's start the bad news:

  You can not PF_MaskWorldWithPath make the expansion of mask for you.

  It doesn't have this entry. to re-create a master expanded, you will need to make this mask on your own.

  given there is no extension on one of the masks, you could use PF_MaskWorldWithPath on each mask and composite in transfer mode right on top of the other.

  finding the original matte for the layer masks.

  Yes, it's an awkward process, but it's the only way to use the mask data for a cache.

  to read the pen, opacity, all other values of the mask, you use AEGP_GetNewMaskStream or AEGP_GetNewMaskOpacity (I don't know what functions separated for the opacity).

  and then AEGP_GetNewStreamValue to access the actual numeric value.

  There is another method, you can use, which is not perfect, but much easier to use.

  get you initial pixel in the layer using a hidden layer param and PF_CHECKOUT_PARAM (or checkout_layer for smartFX).

  compare these original pixels (which have no masks applied) to pixels in entry of the effect (with masks applied to them).

  the difference between the two alpha is (for the most part) the matte of the masks.

  assuming that your effect is first in the stack (or the first affecting the alpha), you should get one if bad no solution that would allow you to save a world of hurt.

  trying to recreate precisely the masks.

  There are even more complicated shapes, involving layers dummy and artificial effects, but it sems to me as if he didn't miss the point.

  I hope this has helped.

  :-)

• Problem with Alpha channel on AfterEffects composition

  Hello

  I'm editing a short film called 'Lost In Time' and one of the sequences is supposed to reflect a 1920s silent film, but Adobe AfterEffect records the images as color, even if on Premiere Pro, it was published in black and white.

  I tried to turn off the alpha channel, but it won't let me click on 'interpret the film' in the file menu of the sequence on the composition and I can't edit each clip manually in black and white because everything is in a sequence. Assembly of the entire sequence in black and white is not an option either because the 70s Film Noir scenes are also in the same room and are supposed to be full color. So how do AfterEffects to recognize the 20 silent film as in black and white?

  You have two choices. Shoot the film in black and white in After Effects and add film damage or restores the section black and white Prime Minister then apply film and AE damage. Almost all the effects, you first add will not come in AE using dynamic links, because they are not compatible. The only thing that you can do about it, it is to make your footage or all the effects work in AE.

  It is a workflow problem not a bug.

• How to use a black and white AVI as an alpha channel?

  Brand new first CC 2015 user here (actually just a user first brand new total), with what is probably a very simple question:

  How can I take a clip in black and white and get the Premiere Pro to use as a mask in alpha channel?

  Basically, I got three items I want to composite together, each of them their own separate AVI:

  (1) a coin of spinning

  (2) a silhouette of the spinning coin

  (3) a movement background

  The animations of the rotation of the piece were made by Bryce 7.1, if this can help, a program that does not know how to incorporate animations alpha channel masks.  I call the "silhouette" as such because it is a completely white room version, turning on a totally black background - perfect for use as an alpha channel, but without the alpha channel information incorporated.  And no matter what I do, I'm not the first to recognize it as such.  Any help would be appreciated.

  Put the background on the V1.

  Thread the room spinning V2, directly above him.

  Put the Silhouette of the coin spinning on V3, just above (and in sync with) V2.

  Go to the control panel effects and go to Video Effects > Keying and select the overlay Cache Track effect. Drag it to and apply it to the room turns on V2.

  A once applied, click the clip on V2 to select and go in the effect controls panel.

  Click the triangle next to the overlay track matte value using Composite matte Luma and the Matte of Video 3. Check the box opposite if necessary to invert the matte.

  

  MtD

• Manual exposure with alpha channel

  I have 3 shows a photo in Photoshop. I would like to manually mix the layers using an alpha channel (identify areas of exhibition as a channel of luminosity) and a layer mask. Firstly I have Ctrl-Click the RGB channel to make a selection for the first exhibition. I then create an alpha channel of this selection. After that I press ctrl-d to cancel the selection. I then select the layer I just create a channel with and then I alt-click on create a mask at the bottom that connects a black mask to this layer. Following that I will come back and ctrl + click the alpha channel or just load the selection, and then use the Brush tool (which I have reset several times) with a white foreground and black background, I paint in the underlying layer, however it does not work. Previously I could only paint in the layer that was selected by the alpha channel, but now the brush just exposes all the parts of the image even outside the selection. I noticed that if I manually magic wand parts of the picture and try to paint in the layer, it works, but using the alpha channel selection is not.  The Brush tool will not be forced to alpha channel selection, when it is trying to reveal the underlying layer with a mask of black layer applied.

  Your selection is not pure & white black (completely hidden, or completely unmasked based on the limits of the mobile dots you see on the screen). If you save your selection as a channel by selecting select > Save selection..., you will see the alpha is composed of gray tones, which means that you can see the brush strokes (although slightly paler) appear outside the moving dotted line.

• Photoshop CS6 using javaScript to truncate the name of the alpha channel

  Hello

  I am a production artist and I work with PSD files created in Adobe Scene7's Image Authoring Tool. These PSD files contain a background as well as the alpha 1-20 layers layer. My script should make a new empty layer for each alpha channel in the document. He then fills the new grey layer. So far, my code accomplishes this mission. However, I would like to apply the alpha channel of the layer name, but I need the name will be truncated. Each alpha channel begins with one or more characters, followed by a bar backslash and then ends with one or more characters. Here is an example:

  An alpha channel can be named: Floor\floor

  In this example, I need my name of layer to be fair: floor. This means that all characters to the left of the backslash, including the backslash itself needs to be scrapped. I used the subSring() for this statement. When I try to step through the code line by line in ExtendScript, I immediately get an error that says no complete string constant and line 31 of my code is highlighted. I think that he doesn't like the way I wrote the backslash character, although I have it surrounded by double quotes to define it as a string.

  Can someone tell me why I get this error?

  Here is my code with a lot of comments to guide you through the process. I wrote where the error occurs in red characters.

  I'm new to JavaScript, so I'm not sure that my while loop is accurate.

  #target photoshop

  #target photoshop makes the script execution in PS.

  declare the variable to contain the active document

  var myDoc = app.activeDocument;

  declare the variable to hold the number of alpha channels, excluding the RGB layers

  var alphaChan = myDoc.channels.length - 3;

  Alert ("alpha channels exist" + alphaChan);

  create a loop to make new layers depends on the number of channels alpha, fill layer with gray and apply the name of alpha channel to the new layer

  for (a = 0; a < alphaChan; a += 1) {}

  make new Virgin layer

  myDoc.artLayers.add ();

  fill empty layer with gray

  var color = new SolidColor();

  Color.RGB.Red = 161;

  Color.RGB.Green = 161;

  Color.RGB.Blue = 161;

  myDoc.selection.fill (color);

  variable stores the name of the alpha channel

  var alphaName = myDoc.channels [3 + a];

  variable stores the length of the name of alpha channel

  var lz = alphaName.length;

  declare the index variable to initialize the character position 1 the name of alpha channel

  var x = 0;

  truncate the name of the alpha channel by removing all characters preceding the symbol "\".

  While (alphaName.subString (x)! = ' \ ') { (ExtendScript gives an error for this line and highlights the backslash and surrounding quotes) }

  alphaName = alphaName.subString ((x+1), z);

  x += 1;

  z = 1;

  Return alphaName;

  }

  remove the backslash in name of alpha channel

  alphaName = alphaName.subString ((x+1), z);

  apply name truncated to the corresponding layer alpha channel

  myDoc.artLayers [a] .name = alphaName;

  }

  While (alphaName.subString (x)! = ' \ ') {}

  should be

  While (alphaName.subString (x)! = ' \ ') {}

• export the alpha channel

  Is there a way to export an alpha channel to apply again file?

  Go to control panel of channels and its menu and select dual channel... and choose the destination document in the pop up window

• A selection of Alpha channel with the color of foreground fill layer

  This question is more theoretical, because I found a work around. On a layer, I have a gray color, that I sample, and it becomes the desired foreground color.

  I would like to fill a selection in an Alpha channel with this gray color.

  However, when I view the Alpha channel, my forground color is lost for black and white, I understand, because the Alpha channel is a grayscale image.

  But I'm able to taste a shade of gray to a foreground color, but how can I keep my chosen original Gray selected from a layer? The only way I know would be to make a new shade and then use it when I'm in the channels.

  Hope I am clear.

  Thank you

  Sonny

  Don't know what you're saying. Sampling the RGB would eventually produce the colors 'Sales', aynway. This apart, of course sampling one color produces 3 values for all 3 components that define the color that can be applied directly onto a single channel a sense or the other. If you must have an 'academic' way to fix, you need to associate mathematics channel as for example combining the Red layer with Alpha using calculations of the image or creating a separate channel which holds the light / gray value. However, if your swatch method works for you, I see no reason to geek. Sometimes simple, hacky techniques are most effective...

  Mylenium

• Select the Alpha channel, such as layer effects

  Hey,.

  If I hold down the CTRL key while clicking on a layer, I get Alpha channel to selection features, which is exactly what I want, but the function includes all the layer effects.

  In particular, I would like to take the drop shadow effect.

  Sort easily accomplish what I want? I use the selection to copy/paste the pieces of design for use on the Web site design.

  You can target multiple layers and drag them as a unit, on your document design and in your design, you can merge them into a single layer.  When you merge layers, they are rasterzied which will include the layer effects.  This will leave your original document intact with its layers and the layer styles.  If in your description you do not merge the layers move layes them will be intact, layer styles. If merge you them the you'll one layer with the applied end styles and the merged layer will not have a layer style itself.

  I don't know if when layer styles are applied when the merger if these layers will mix in the lower layers as layer styles would be if you start to change the lower layers, after you merge layers.

• Export a clip of move with alpha channel

  
  

  Hello

  I'm trying to export a displacement of clips with alpha channel.

  I'm trying to export an animation with first CS5. I made an animation of a spinning object in Maya and exported in the form of TIFFs with alpha channel. Then they are edited with Photoshop to give them a drop shadow.

  My problem is the following. Can I export this animation of tiff with alpha channel?

  My plane is to use clips from moving in a background in a game - depending on the outcome, there are different animations playing on top of several different backgrounds. It to the objects must have a transparent alpha on the bottom channel.

  Again, the reason for this is the complexity of the game and make the game looking as real as possible. I hope help here to make my plan possible

  .. .thanks

  It comes to CS4, but it applies as well to CS5: exporting files video with alpha channels

  This reference is mysteriously absent from the CS5 help, but follow these steps and you can export a movie of alpha channel.

• Get an alpha channel to AFX export to Photoshop

  I have an image in After Effects CS4 with text top and transparent background.  I need to export it as a png (and keep the background transparency).  I tried to do that in many ways (as single image or sequence png after having reduced the work area to my unique, as well as alpha prematted or right (both with RGB 16million more)... but I get a black pole in the background.)  Tried exporting as png and photoshop file.

  Can someone explain the correct way to do this?  (The alpha channel to transfer to photoshop, so if there is a simple way to use it to mask the background (or in the part of the image that I need) I guess it would have enough.)  It was just saying that I have to make my bright green text or something in AFX and then convert to black in photoshop.

  Is this some sort of bug or am I just missed the simple way to do this?

  Thanks for any help.

  Yes, of course, you must select the content of the layer to be deleted. removal of the pixels in the mask itself will be it degenerates and increase the contrast. You can also apply the selection as a layer mask. Click on the respective icon KEY at the bottom of the layers palette or selection--> save the selection, with the destination, the value to This Document and a new channel (layer mask).

  Mylenium

• Alpha channels does not not how they should?

  Hi, I'm new to this forum, but has decided, it would be the best place to get feedback on what I can hurt. I use photoshop for a few years and recently updated CS4 however my alpha channels do not work how I think they should.

  When I open an image, I use the Panel layer and click on the little icon down to 'Create a new string' but no dialog box is displayed for me to quote my channel. Also, my understanding is that a black fill covers my picture that when adorned with white would reveal the image below. However when I paint on my channel by using the tool brush and white color just finishes of paint on my image.

  Either by the way, I'm trying to use this channel to create and save a selection, I don't understand where I'm wrong, but any help would be much appreciated. Thank you in advance.

  Alpha channels are an image in grayscale showing what is / is not selected. White is selected, unselected black and gray are partially selected so if you make a new black alpha channel and command + click top then you won't get that no pixel selected error.

  To use layers alpha masking, you usually copy the channel you want to use by dragging the button channel new channel (you must drag the channel here, not just click on the button new channel), then any changes you want to apply. You can also use Image-> calculations to combine two different routes in an alpha channel.

• Problem of texture with alpha channel

  [code]
  on createMySphere
  RS = p3d.newModelResource ("mySphere01", #sphere)
  s = p3d.newModel ("s", sr)
  s.Transform.position = vector (0,0,0)
  s.Shader = p3d.newShader ("sShdr2", #standard)
  txS = p3d.newTexture ("TX", #fromcastmember, member ('image'))
  s.shader.textureList [1] = txS
  SR. RADIUS = 100
  SR. Resolution = 60
  
  end
  [code]
  I'm using png textures for image format, because I want to make the user to its alpha channel. The problem comes when the image has alpha, the sphere disappears much matter how the alpha is painted.
  How to make use of the alpha channel, it should not even be in the same image.
  

  This is the behavior that I have used on an empty shockwave3D member. Note that I use...

  planeO.shaderList = p3D.newShader (...)

  ... rather than .shaderList [1]

  This rather weird syntax applies the shader for all STS at the same time.

• An Alpha channel in 5 motion editing

  I used chromatic key successfully in many video projects Motion 5, but now I am interested in editing and in some cases, remove a layer alpha to any clip. I have read the user manual and learned about the export of the video using Apple ProRes 4444 and ensuring the drop down choices include color or color and alpha, but I think my question just before exporting.

  I bought video clips for use in my projects with alpha channels deleted and I would like to explore using this kind of function change myself.

  I'm just exercise wishful thinking here or is to detach the data of possible alpha channels in the query editor 5 no matter where I export the video?

  Thanks for any help to a novice Editor to the-middle-level-qualified.

  Bob T. Editor-in-Chief in manufacturing...

  Well,... no way alpha... ? something, some content, for example a solid color

  and it is set in the project properties, see:

  

  the two parameters of canvas even look: black.

  but when exporting with the setting on the right, instead of an alpha = transparency, the selected color fills the background.

  -What are you looking for?

• ProRes 444 is only way to export (share) titles with alpha channel?

  I like to keep a number of equities with alpha channels and ProRes 444 results in large files.

  Is it possible to reduce the size of the files?

  ITI is the best way with an alpha channel construction.