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How To Layer Video In Touch Designer

Written By Friday, November 19, 2021 Add Comment Edit

Summary

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The Over TOP places Input1 'over' Input2. The alpha of Input1 is used to determine what parts of the Input2 image are visible in the result.

PythonIcon.pngoverTOP_Class

Parameters - Transform Page

Fixed Layer size - ⊞ - The selected input will become the fixed layer and the other input will be the overlay. This does not change the order of the composite (Input1 + Input2), only which layer is considered fixed and which layer is adjustable by the parameters on the Transform page. The resolution and aspect ratio of the Fixed Layer is used as the composite's final resolution and aspect ratio unless manually on the Common Page

  • Input 1input1 -
  • Input 2input2 -

Pre-Fit Overlay prefit - ⊞ - Determines how the Overlay layer (Overlay layer is the input that is NOT the Fixed Layer) fills the composite.

  • Fillfill - Overlay layer is stretched/squashed to fill the resolution and aspect ratio of the Fixed Layer.
  • Fit Horizontalfithorz - Overlay layer is stretched/squashed to fit the Fixed Layer horizontally.
  • Fit Verticalfitvert - Overlay layer is stretched/squashed to fit the Fixed Layer vertically.
  • Fit Bestfitbest - Overlay layer is stretch/squashed to fit the Fixed Layer using the best possible match that does not crop any of the Overlay layer. The aspect ratio of the Overlay is maintained.
  • Fit Outsidefitoutside - Overlay layer is stretched squashed to fit the Fixed Layer using the worst possible match. This is the opposite of Best Fit. The aspect ratio of the Overlay is maintained.
  • Native Resolution nativeres - Overlay is not squashed or stretched. The Overlay layer uses its own resolution and aspect ratio during the composite. Pixel accurate composites require Native Resolution, use this setting for to maintain an image's original resolution during the composite.

Justify Horizontal justifyh - ⊞ - Specify the horizontal alignment of the Overlay.

  • Leftleft - The Overlay is aligned to the left side of the Fixed Layer.
  • Centercenter - The Overlay is centered in the Fixed Layer.
  • Rightright - The Overlay is aligned to the right side of the Fixed Layer.

Justify Vertical justifyv - ⊞ - Specify the vertical alignment of the Overlay.

  • Bottombottom - The Overlay is aligned to the bottom of the Fixed Layer.
  • Centercenter - The Overlay is centered in the Fixed Layer.
  • Toptop - The Overlay is aligned to the top of the Fixed Layer.

Extend Overlay extend - ⊞ - Sets the extend (or repeat) conditions of the Overlay layer. This parameter determines what happens at the edges of the Overlay layer.

  • Holdhold - The pixel values at the edges of the Overlay layer continue to extend past that edge.
  • Zerozero - The image does not extend past the edges of the Overlay.
  • Repeatrepeat - The image is repeated at the edges of the Overlay.
  • Mirrormirror - The image is mirrored at the edges of the Overlay.

NOTE: All the transform parameters below affect the Overlay layer only.

Rotate r - Rotates the Overlay layer. Increasing values rotate clockwise, decreasing values rotate counter-clockwise.

Translate t - ⊞ - Translates the Overlay layer in x and y.

  • Xtx -
  • Yty -

Translate Units tunit - Sets the units used in the Translate parameter.

Scale s - ⊞ - Scales the Overlay layer in x and y.

  • Xsx -
  • Ysy -

Pivot p - ⊞ - Allows you to define the point about which the Overlay layer scales and rotates. Altering the pivot point produces different results depending on the Transform Order.

  • Xpx -
  • Ypy -

Pivot Units punit - Sets the units used in the Pivot parameter.

Parameters - Common Page

Output Resolution outputresolution - ⊞ - quickly change the resolution of the TOP's data.

  • Use Inputuseinput - Uses the input's resolution.
  • Eightheighth - Multiply the input's resolution by that amount.
  • Quarterquarter - Multiply the input's resolution by that amount.
  • Halfhalf - Multiply the input's resolution by that amount.
  • 2X2x - Multiply the input's resolution by that amount.
  • 4X4x - Multiply the input's resolution by that amount.
  • 8X8x - Multiply the input's resolution by that amount.
  • Fit Resolution fit - Fits the width and height to the resolution given below, while maintaining the aspect ratio.
  • Limit Resolution limit - The width and height are limited to the resolution given below. If one of the dimensions exceeds the given resolution, the width and height will be reduced to fit inside the given limits while maintaining the aspect ratio.
  • Custom Resolution custom - Enables the Resolution parameter below, giving direct control over width and height.

Resolution resolution - ⊞ - Enabled only when the Resolution parameter is set to Custom Resolution. Some Generators like Constant and Ramp do not use inputs and only use this field to determine their size. The drop down menu on the right provides some commonly used resolutions.

  • Wresolutionw -
  • Hresolutionh -

Resolution Menu resmenu - A drop-down menu with some commonly used resolutions.

Use Global Res Multiplier resmult - Uses the Global Resolution Multiplier found in Edit>Preferences>TOPs. This multiplies all the TOPs resolutions by the set amount. This is handy when working on computers with different hardware specifications. If a project is designed on a desktop workstation with lots of graphics memory, a user on a laptop with only 64MB VRAM can set the Global Resolution Multiplier to a value of half or quarter so it runs at an acceptable speed. By checking this checkbox on, this TOP is affected by the global multiplier.

Output Aspect outputaspect - ⊞ - Sets the image aspect ratio allowing any textures to be viewed in any size. Watch for unexpected results when compositing TOPs with different aspect ratios. (You can define images with non-square pixels using xres, yres, aspectx, aspecty where xres/yres != aspectx/aspecty.)

  • Use Inputuseinput - Uses the input's aspect ratio.
  • Resolution resolution - Uses the aspect of the image's defined resolution (ie 512x256 would be 2:1), whereby each pixel is square.
  • Custom Aspectcustom - Lets you explicitly define a custom aspect ratio in the Aspect parameter below.

Aspect aspect - ⊞ - Use when Output Aspect parameter is set to Custom Aspect.

  • Aspect1aspect1 -
  • Aspect2aspect2 -

Aspect Menu armenu - A drop-down menu with some commonly used aspect ratios.

Input Smoothness inputfiltertype - ⊞ - This controls pixel filtering on the input image of the TOP.

  • Nearest Pixelnearest - Uses nearest pixel or accurate image representation. Images will look jaggy when viewing at any zoom level other than Native Resolution.
  • Interpolate Pixelslinear - Uses linear filtering between pixels. This is how you get TOP images in viewers to look good at various zoom levels, especially useful when using any Fill Viewer setting other than Native Resolution.
  • Mipmap Pixelsmipmap - Uses mipmap filtering when scaling images. This can be used to reduce artifacts and sparkling in moving/scaling images that have lots of detail.

Fill Viewer fillmode - ⊞ - Determine how the TOP image is displayed in the viewer.

NOTE:To get an understanding of how TOPs work with images, you will want to set this to Native Resolution as you lay down TOPs when starting out. This will let you see what is actually happening without any automatic viewer resizing.

  • Use Inputuseinput - Uses the same Fill Viewer settings as it's input.
  • Fillfill - Stretches the image to fit the edges of the viewer.
  • Fit Horizontalwidth - Stretches image to fit viewer horizontally.
  • Fit Verticalheight - Stretches image to fit viewer vertically.
  • Fit Bestbest - Stretches or squashes image so no part of image is cropped.
  • Fit Outsideoutside - Stretches or squashes image so image fills viewer while constraining it's proportions. This often leads to part of image getting cropped by viewer.
  • Native Resolution nativeres - Displays the native resolution of the image in the viewer.

Viewer Smoothness filtertype - ⊞ - This controls pixel filtering in the viewers.

  • Nearest Pixelnearest - Uses nearest pixel or accurate image representation. Images will look jaggy when viewing at any zoom level other than Native Resolution.
  • Interpolate Pixelslinear - Uses linear filtering between pixels. Use this to get TOP images in viewers to look good at various zoom levels, especially useful when using any Fill Viewer setting other than Native Resolution.
  • Mipmap Pixelsmipmap - Uses mipmap filtering when scaling images. This can be used to reduce artifacts and sparkling in moving/scaling images that have lots of detail.

Passes npasses - Duplicates the operation of the TOP the specified number of times. Making this larger than 1 is essentially the same as taking the output from each pass, and passing it into the first input of the node and repeating the process. Other inputs and parameters remain the same for each pass.

Channel Mask chanmask - Allows you to choose which channels (R, G, B, or A) the TOP will operate on. All channels are selected by default.

Pixel Format format - ⊞ - Format used to store data for each channel in the image (ie. R, G, B, and A). Refer to Pixel Formats for more information.

  • Use Inputuseinput - Uses the input's pixel format.
  • 8-bit fixed (RGBA)rgba8fixed - Uses 8-bit integer values for each channel.
  • sRGB 8-bit fixed (RGBA)srgba8fixed - Uses 8-bit integer values for each channel and stores color in sRGB colorspace.
  • 16-bit float (RGBA)rgba16float - Uses 16-bits per color channel, 64-bits per pixel.
  • 32-bit float (RGBA)rgba32float - Uses 32-bits per color channel, 128-bits per pixels.
  • 10-bit RGB, 2-bit Alpha, fixed (RGBA)rgb10a2fixed - Uses 10-bits per color channel and 2-bits for alpha, 32-bits total per pixel.
  • 16-bit fixed (RGBA)rgba16fixed - Uses 16-bits per color channel, 64-bits total per pixel.
  • 11-bit float (RGB), Positive Values Onlyrgba11float - A RGB floating point format that has 11 bits for the Red and Green channels, and 10-bits for the Blue Channel, 32-bits total per pixel (therefore the same memory usage as 8-bit RGBA). The Alpha channel in this format will always be 1. Values can go above one, but can't be negative. ie. the range is [0, infinite).
  • 16-bit float (RGB)rgb16float -
  • 32-bit float (RGB)rgb32float -
  • 8-bit fixed (Mono)mono8fixed - Single channel, where RGB will all have the same value, and Alpha will be 1.0. 8-bits per pixel.
  • 16-bit fixed (Mono)mono16fixed - Single channel, where RGB will all have the same value, and Alpha will be 1.0. 16-bits per pixel.
  • 16-bit float (Mono)mono16float - Single channel, where RGB will all have the same value, and Alpha will be 1.0. 16-bits per pixel.
  • 32-bit float (Mono)mono32float - Single channel, where RGB will all have the same value, and Alpha will be 1.0. 32-bits per pixel.
  • 8-bit fixed (RG)rg8fixed - A 2 channel format, R and G have values, while B is 0 always and Alpha is 1.0. 8-bits per channel, 16-bits total per pixel.
  • 16-bit fixed (RG)rg16fixed - A 2 channel format, R and G have values, while B is 0 always and Alpha is 1.0. 16-bits per channel, 32-bits total per pixel.
  • 16-bit float (RG)rg16float - A 2 channel format, R and G have values, while B is 0 always and Alpha is 1.0. 16-bits per channel, 32-bits total per pixel.
  • 32-bit float (RG)rg32float - A 2 channel format, R and G have values, while B is 0 always and Alpha is 1.0. 32-bits per channel, 64-bits total per pixel.
  • 8-bit fixed (A)a8fixed - An Alpha only format that has 8-bits per channel, 8-bits per pixel.
  • 16-bit fixed (A)a16fixed - An Alpha only format that has 16-bits per channel, 16-bits per pixel.
  • 16-bit float (A)a16float - An Alpha only format that has 16-bits per channel, 16-bits per pixel.
  • 32-bit float (A)a32float - An Alpha only format that has 32-bits per channel, 32-bits per pixel.
  • 8-bit fixed (Mono+Alpha)monoalpha8fixed - A 2 channel format, one value for RGB and one value for Alpha. 8-bits per channel, 16-bits per pixel.
  • 16-bit fixed (Mono+Alpha)monoalpha16fixed - A 2 channel format, one value for RGB and one value for Alpha. 16-bits per channel, 32-bits per pixel.
  • 16-bit float (Mono+Alpha)monoalpha16float - A 2 channel format, one value for RGB and one value for Alpha. 16-bits per channel, 32-bits per pixel.
  • 32-bit float (Mono+Alpha)monoalpha32float - A 2 channel format, one value for RGB and one value for Alpha. 32-bits per channel, 64-bits per pixel.

Operator Inputs

  • Input 0 -
  • Input 1 -

Info CHOP Channels

Extra Information for the Over TOP can be accessed via an Info CHOP.

Common TOP Info Channels

  • resx - Horizontal resolution of the TOP in pixels.
  • resy - Vertical resolution of the TOP in pixels.
  • aspectx - Horizontal aspect of the TOP.
  • aspecty - Vertical aspect of the TOP.
  • depth - Depth of 2D or 3D array if this TOP contains a 2D or 3D texture array.
  • gpu_memory_used - Total amount of texture memory used by this TOP.

Common Operator Info Channels

  • total_cooks - Number of times the operator has cooked since the process started.
  • cook_time - Duration of the last cook in milliseconds.
  • cook_frame - Frame number when this operator was last cooked relative to the component timeline.
  • cook_abs_frame - Frame number when this operator was last cooked relative to the absolute time.
  • cook_start_time - Time in milliseconds at which the operator started cooking in the frame it was cooked.
  • cook_end_time - Time in milliseconds at which the operator finished cooking in the frame it was cooked.
  • cooked_this_frame - 1 if operator was cooked this frame.
  • warnings - Number of warnings in this operator if any.
  • errors - Number of errors in this operator if any.


TouchDesigner Build:

TOPs
Add •Analyze •Anti Alias •Blob Track •Blur •Cache Select •Cache •Channel Mix •CHOP to •Chroma Key •Circle •Composite •Constant •Convolve •Corner Pin •Experimental:Corner Pin •CPlusPlus •Crop •Cross •Cube Map •Depth •Difference •DirectX In •DirectX Out •Displace •Edge •Emboss •Feedback •Fit •Experimental:Fit •Flip •Function •GLSL Multi •GLSL •HSV Adjust •HSV to RGB •Import Select •In •Inside •Introduction To s Vid •Kinect Azure Select •Kinect Azure •Kinect •Layout •Experimental:Layout •Leap Motion •Lens Distort •Level •Experimental:Level •Limit •Lookup •Luma Blur •Luma Level •Math •Matte •Mirror •Monochrome •Movie File In •Movie File Out •Multiply •Ncam •NDI In •NDI Out •Noise •Normal Map •Notch •Null •Nvidia Background •Nvidia Denoise •Nvidia Flex •Nvidia Flow •Oculus Rift •OP Viewer •OpenColorIO •OpenVR •Ouster Select •Ouster •Experimental:Ouster •Out •Outside •Over •Pack •Photoshop In •Point File In •Point File Select •Point Transform •PreFilter Map •Projection •Ramp •RealSense •Rectangle •Remap •Render Pass •Render Select •Render •Reorder •Resolution •RGB Key •RGB to HSV •Scalable Display •Screen Grab •Screen •Script •Select •Shared Mem In •Shared Mem Out •Slope •Spectrum •SSAO •Stype •Substance Select •Substance •Subtract •SVG •Experimental:SVG •Switch •Syphon Spout In •Syphon Spout Out •Text •Experimental:Text •Texture 3D •Texture Sampling Parameters •Threshold •Tile •Time Machine •TOP •TOP Viewer •Touch In •Touch Out •Transform •Experimental:Transform •Under •Video Device In •Experimental:Video Device In •Video Device Out •Video Stream In •Video Stream Out •Vioso •Web Render •ZED

How To Layer Video In Touch Designer

Source: https://docs.derivative.ca/Over_TOP

Posted by: conanthowen1991.blogspot.com

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