Video Channel

Last updated 25 December 2022

A video channel can be create by clicking the + icon in the center split area on the left side. A right click context menu allows to delete the channel.

A video channel can be selected by clicking on it name or the channel header.

When selected, its properties are shown on the right split.

Video Channel Properties

Name

Editable name of video video channel

Blend

Frame Blending Mode. Frame blending is a method to handle framerate conversions or necessary skips and redraws of frames.

  • Framerate conversion is always needed, if the GPU output frequency is not equal or a multiple of the video framerate. To enable framerate conversion, set the Blend mode to Continuous.

  • Even if GPU output frequency is equal or a multiple of the framerate, skips and redraws might be unfrequently necessary, if the global clock is not running in sync with the GPU output. To have the global clock running in sync with the GPU, an external sync generator for video is needed (Genlock) . To minimize the effect of conversion and/or skip and redraw, a certain number of frames are blended in each other instead of doing a hard skip or redraw. The number of frames used to blend are set in Settings under Video. To enable this blend mode, set it to Skip & Repaint.

  • If the GPU output frequency is a multiple of the framerate, the video can look smoother when blending the “inbetween” frames of the video. When showing a 30 FPS video on a 60 Hz output, the video frames will show like that:
    100% Frame 1
    50% Frame 2 + 50% Frame 1
    100% Frame 2
    …
    To enable this, set blend mode to Skip & Repaint & Frame Double

  • To disable any frame blending, set to None

Surface Assignments:

Check the surface and select the mapping of that surface where you want the video channel to be rendered to.

Assets

There are two ways to add assets to a channel:

  1. Drag them from Assets to the channel or

  2. Double click into the channel where you want to place the asset. The an asset selection dialog will pop up.

A right click context menu allows to delete the asset or set it to “loop”.

The asset’s properties are shown in the right splitter, if the asset is selected.

To select an asset in a video channel, click on its name or on the asset header.

Use the right click context menu to remove an asset from a channel.

Visual Asset Properties in Video Channel

Name

Shows the name of the asset

Start

Start time of the asset in the video channel

End

End time of the asset in the video channel (if it is not set to loop)

Loop

Check to have the asset looping

A looped visual asset can be interrupted in the video channel by placing another asset.