Video Capture
Updated: 12 May 2025
Use input from a video capture device (DirectShow / Media Foundation).
Video Capture
Method #
Use input from a video capture source (DirectShow / Media Foundation).
See Video Capture for further details.
When using video capture sources in a media server (as a block), you would use a Video Loader with an exposed parameter.
Parameters
These properties control the core behaviours of the node.
Parameter Details Preview In Viewport
Preview the generated image as an overlay in the viewport.
- Off : No preview is generated.
- RGBA : Preview the image blended with alpha in the viewport.
- RGB : Preview the colour channels in the viewport.
- Alpha : Preview the alpha channel in the viewport.
- PIP : Preview the image blended with alpha in the viewport, in a smaller picture in picture display, on top of the existing content.
Apply PostFX Before Alpha Image Input (Legacy)
When enabled, the alpha input image is applied after the postfx pass, overwriting any effects the postfx would have applied to the alpha channel.
Source Type
The source type.
- Any active : Use any active sources.
- Video Capture : Use the video capture input source.
- Spout : Use spout input source.
Source Index
The index of the video device to use for input.
Flip Image X
Flip the image along the x-axis.
Flip Image Y
Flip the image along the y-axis.
The properties control the time at which the node is active. See Timeline for editing time segments.
Parameter Details Duration
Control the duration of the node’s time segment.
- Composition Duration : Use the length of the composition for the node’s time segment duration.
- Custom : Set a custom duration for the node’s time segment.
Node Time
The custom start and end time for the node.
Duration (Timecode)
The length of the node’s time segment (in time).
Duration (Frames)
The length of the node’s time segment (in frames).
Time Segment Enabled
Set whether the node’s time segment is enabled or not in the Timeline.
Inputs
These properties control the core behaviours of the node.
| Parameter | Details |
|---|---|
| Preview In Viewport |
Preview the generated image as an overlay in the viewport.
|
| Apply PostFX Before Alpha Image Input (Legacy) | When enabled, the alpha input image is applied after the postfx pass, overwriting any effects the postfx would have applied to the alpha channel. |
| Source Type |
The source type.
|
| Source Index | The index of the video device to use for input. |
| Flip Image X | Flip the image along the x-axis. |
| Flip Image Y | Flip the image along the y-axis. |
The properties control the time at which the node is active. See Timeline for editing time segments.
| Parameter | Details |
|---|---|
| Duration |
Control the duration of the node’s time segment.
|
| Node Time | The custom start and end time for the node. |
| Duration (Timecode) | The length of the node’s time segment (in time). |
| Duration (Frames) | The length of the node’s time segment (in frames). |
| Time Segment Enabled | Set whether the node’s time segment is enabled or not in the Timeline. |
| Name | Description | Typical Input |
|---|---|---|
| Effect Mask | Mask out areas that Post-FX applied to this node won’t be applied. | Video Loader |
| Alpha Image | Use a separate video nodes luminance values to overwrite the alpha channel of the image. | Video Loader |