Outputs
The picture of the live scene goes out through the Output chip in the top bar: fullscreen on a display, in a window, or to other apps through Spout and NDI.
A display
Click Output and pick a display. Each one is listed with its name, its size and its refresh rate, for example Display 2 1920×1080 · 60 Hz.
The picture fills that display in a borderless stage window, above other windows, with no interface and no cursor on it. Its shape is kept: if the display's shape differs from the picture's, you get bars on two sides, never a stretched picture.
To close it, use Close output in the same menu. Esc doesn't close it, so a stray key on stage can't either.
Window in the same menu puts the output in an ordinary window instead, handy for checking it on one screen.
If a projector is unplugged, the picture keeps running; Velo tells you, and recovers when it's back. A GPU driver reset is recovered from the same way.
The picture's size
With no node selected, the inspector shows the Canvas: the size and frame rate every output renders at, Full HD at 60 frames a second unless you change it. Pick a preset or type the width, height and FPS.
Spout and NDI
Under SHARE in the Output menu:
- Spout (Windows) sends the picture to other apps on this computer: Resolume, TouchDesigner, OBS, MadMapper. It shows up there as a Spout source called Velo, about a frame late.
- NDI sends it to any computer on the network with an NDI receiver: OBS, vMix, NDI Studio Monitor. It needs the free NDI runtime installed on this computer.
The share sends the program at full size, whatever the display does.
On stage
| Key | What it does |
|---|---|
| B | Blackout: the outputs go black, again to come back. The chip turns red while it's on |
| F | Freeze: the outputs hold the last picture while the scene runs on underneath, again to let go |
| Ctrl Shift T | Test pattern: square cells, a circle that shows any stretch, the middle crossed, the edge, color bars and a grey ramp, for lining up a projector |
All three are in the Output menu too, and Blackout and Freeze have their own buttons in the top bar. Blackout, Freeze and the tempo can also be bound to a controller or sent by OSC.
The Output's grade
The Output node, last in every scene, grades what goes out: the displays, the shares and the preview alike. Select it to see its values in the inspector, or open them on its card with the chevron in its footer.
| Value | What it does |
|---|---|
| Exposure | Brighter or darker, in stops (from -3 to +3) |
| Contrast | Flatter or harder (1 leaves it) |
| Saturation | Grey at 0, richer above 1 |
| Hue | Turns every color round the wheel |
| Colorize | Tints the picture through a color you pick |
| Invert | Negative |
| Vignette | Darkens the corners |
| Fade | Fades to black |
Each is a value like any other: map the kick onto Exposure, or give Fade to a macro and you have a fader to black on your controller. At its defaults the grade leaves the picture exactly as it was.