If you don’t see the Camera Effects window on the screen, click the magic wand icon in the column of icons in the top right-hand corner of the Main window.
The Camera Effects window is where you can control Ecamm Live’s Green Screen feature. Also called chroma key, the green screen feature will replace any green background with a provided image file. It can also be used in transparent mode, to remove the background entirely when using picture-in-picture mode.
To begin using Green Screen, you’ll need to do some set-up. First, you’ll need a green smooth background. This could be a green-painted wall, a muslin photography backdrop, or a pop-up screen. Note that most webcams have a very wide-angle lens, so a wider-than-expected backdrop is usually required to fill the camera frame. The wide angle can be avoided by using a Canon DSLR rather than a webcam.
You’ll also need to ensure that you have excellent lighting with no shadows or glare in order fo the Green Screen effect to look good. You should be well lit from all angles, and the backdrop should also be well lit.
Once you are set up, turn on the Green Screen feature using the Green Screen checkbox. Then select an image by clicking Select Image. Finally, adjust the Fade Level slider until the background is revealed. If you see a sparkle or fringe effect, you may need to adjust lighting.
Green Screen Options
There are a few other options in the Green Screen settings:
- If more than one video source is being used, for example when using a split screen layout, you’ll be able to pick a video source from the menu at the top of the Camera Effects window.
- Blur Background Apply a blur effect to the selected background image.
- Transparent PIP When using picture-in-picture, make the green screen transparent rather than using a background image. Whatever is behind the picture-in-picture becomes the background.
- Mask Edges Ecamm Live can automatically remove objects along the edge of the frame such as a microphone or the edge of a backdrop. Click the button again to turn off the masking.
Zoom & Pan
In the Camera Effects window, just below the Green Screen settings, you’ll see controls for adding digital zoom to your camera source. Zoom in or out by checking the Zoom & Pan checkbox and adjusting the zoom slider. Once you’ve adjusted the zoom, the zoom area can be adjusted left, right up or down by dragging in the small video preview area just below the slider.
Zooming in can be useful for fine-tuning how a shot is framed, for example to crop out the edges of a green screen.
Zooming out can be used to better position a video source in an Overlay frame.
Two other options can be found at the bottom of Camera Effects window:
Use the Mirror checkbox to flip the camera image. Once flipped, your audience will see you mirrored. However you may find it easier to orient yourself when mirrored, for example to point to an on-screen element.
Use the Deinterlace checkbox to remove interlacing line artifacts when using an interlaced video source.
An example of an interlaced sources would be an HDMI capture device such as the Elgato Cam Link connected to a camera providing a 1080i video signal.
Note that when using a Blackmagic HDMI capture device, Ecamm Live will activate the deinterlacing filter automatically as needed.
Also note that some HDMI capture devices, such as the Magewell USB Capture Gen 2, may already be applying a deinterlacing filter.
Use Max Resolution
Some cameras may offer more than one resolution option. Ecamm Live will run cameras at their standard resolution by default. Check this checkbox to use the camera’s maximum resolution setting. Note that this checkbox will only show up if a higher resolution is available.
Set Default Camera
Click this button to use this camera as the default camera. This default camera will be used when a new Scene is created, or as a fallback if a camera is disconnected or unavailable.
Next article: Screenshare Mode