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Element Icon Video Sequencer
Category: Visual Stimuli AddIn: Base Layer
Creator: OkazoLab Scope: Parent event
Owns Snippets: None Usage: Stimulus screen


NameDescription                              ConstraintsTypeOn
Playback Mode        Defines the playback mode for a video clip: 1) manual playback. 2) Single playback on the event onset (default mode). 3) Looped playback after event onset.                stPlay..         
Starting Frame                        Int32         
Current Keyframe                        Int32         
Desired Framerate        Defined the playback framerate in Hz.                Double         
Is Playing        Indicates the current state of video playback                Boolean         
Direct Rendering        Defines whether the video is rendered directly on the screen skipping the standard event rendering pipeline                Boolean         
Clip Info
Frame Rate        Original frame rate of the current clip in frames/second                Double         
Duration        Duration of the current clip in seconds                Double         
Number of Frames        Return a number of video frames in the current clip                Int32         
Frame Size        Original frame size of the current clip                clSize         
Required Memory        Return an amount of memory required for preloading the current video clip                String         
Runtime Status
Is Triggered        Returns true when video playback reaches the end of a video clip                Boolean         
Actual Frame Times        Returns an array of the actual on-screen times for each frame.                clTime..         
Actual Frame Durations        Returns an array of the actual frame durations                clTime..         
Material List
Selected Index        Defines an index of the selected library item in the list of this element                Int32         
Selected Item        Defines a name if the selected library item in the list of this element                String         
Item Count        Return the total number of material items in the list of this element                Int32         
Visual Appearance
Alpha Masking        Defines, whether the visual content is used to create an opacity mask on the event surface. If masking is on, the content's pixel luminance (or, its inverse) defines transparency within element's viewport. The alpha masking allows, for example, create transparent holes on the event surface.                Int32         
AntiAliasing        if true, the rendered content will be antialiased for smoother visual appeariance. If false, rendering will be authentic to its source, e.g. a bitmap.                Boolean         
Position        Defines a position of the rendering viewport on the screen                clPoint         
Size        Defines a size of the element's rendering viewport on the screen                clSize         
Z Order        Indicates Z Order of the element on the given event                Int32         
Pivot Point        Defines alignment of the pivot point (or, element's position) relative to element's rendering area. The pivot point sets the center of element's rotation and scale directions.                stAlig..         
Visible        Defines whether the element is visible                Boolean         
Rotation        Rotation angle in degrees                Double         
Transparent Color        The color of the original pixels of rendered content that will be set as transparent                stColor         
Transparent Tolerance        Tolerance ratio for choosing colors that become transparent. Zero means that effect is not applied, 1 denotes that all colors will become trasparent                Int32         
Color Mask        Produces a multiplicative combination of the original pixels and the selected mask color (except the alpha channel).  The effect emulates a look through a colored glass.  White or transparent mask color dont change the original pixels                stColor         
Opacity        Opacity of the rendered content                Int32         
Contrast        Contrast of the rendered content                Int32         
Brightness        Brightness the rendered content                Int32         
Saturation        Saturation of the rendered content                Double         
Pixelation        Pixelation of the rendered content                Int32         
Blurring        The radius used in the gaussian blur of rendered content, as a pixel-based factor. The default is 0 which means no blurring.                Int32         
Scrambling                        Double         
Scrambling Grid Size        Defines a size of the scrambling grid                clSize         
Positional Jitter
Reset Jitter Now        Runtime command that resets the positional jitter.                Boolean         
Current Jitter        Returns the current jitter                clPoint         
Jitter Range        Defines a possible range for the random jitter. The range is centered to the position of the element.                clSize         
Test Jitter        Click to test the current jitter                Boolean         
Is Enabled        If set to false the element is completely omitted when the experiment is run                Boolean         
Title        Title of the element                String         

Video Sequencer Element renders video clips preloaded as a sequence of bitmaps. The preloaded sequence allows variable-speed playback and very precise frame timing.




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Practical Use


Technique 1

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    === Technique 2 ===
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     // Check the trial outcome. Result and RT just other user variables
    // insert code snippet here..
    == Notes ==
  5. Insert Notes here..
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  Name Size
- Video-Sequencer-Element-Icon.png 3.40 KB

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