Quick Summary (TL;DR)
To deliver broadcast-quality overlays with EasyWorship, you need to (1) configure EasyWorship for dual Fill/Key outputs and (2) set up your Blackmagic ATEM mixer to combine those signals into clean overlays. This guide shows how to connect hardware, adjust software settings, and fine-tune your workflow so your lyrics, scripture, and sermon notes look crisp and professional both in-house and online.
Introduction and Overview
In a professional worship production environment, Alpha Keying is the technique that allows text and graphics (such as lyrics, scripture, sermon notes, and lower thirds) to appear cleanly over live video without blocking the background. Instead of sending a single video feed with baked-in text, Alpha Key workflows separate the signal into two parts: the Fill (full-color graphics) and the Key (the transparency matte). This separation enables overlays to look crisp, sharp, and distraction-free.
EasyWorship generates these Fill and Key outputs directly from your worship computer. To bring them into a live production, you need a video mixer (such as the Blackmagic ATEM Mini Pro) which combines those two signals with live camera feeds. The result is a polished, broadcast-quality overlay that can be projected on sanctuary screens (IMAG) or streamed online, giving your congregation the same level of clarity and professionalism seen in television production.
Understanding Key and Fill in Alpha Key Workflows
Before configuring EasyWorship and ATEM, it helps to understand the two-part signal that makes Alpha Key possible:
Fill: The full-color graphics (lyrics, lower thirds, scripture, sermon notes).
Key: A grayscale transparency map. White = fully visible, black = fully transparent, and gray = partial transparency.
By splitting graphics into these two signals, Alpha Key allows for anti-aliased edges and smooth gradients of opacity. This means text and shapes blend naturally into live video rather than looking jagged or harshly cut out.
To make this possible, EasyWorship outputs two separate signals from your video card: one for Fill and one for Key. In Windows, these appear as numbered display outputs. We’ll logically refer to them as the Fill output and the Key output as we map them into a Blackmagic ATEM mixer.
Section 1: Setting Up EasyWorship for Alpha Key Output
The first step is to configure EasyWorship to output Alpha Key correctly. This means telling EasyWorship to use two numbered display outputs from your computer’s video card: one will carry the Fill (the graphics themselves) and the other will carry the Key (the transparency matte). These two signals will later be mapped as separate Fill and Key inputs inside the Blackmagic ATEM mixer, where they are combined into clean overlays for worship production.
Hardware Requirements
- Computer with at least two video outputs (a GPU upgrade may be needed).
- ATEM Mini Pro or other Blackmagic ATEM mixer.
- One or more cameras for live inputs.
- Monitor/TV for ATEM multiview.
- (Optional) HDMI-to-SDI converters for long cable runs.
Physical Connections
- Camera → ATEM HDMI Input 1
- EasyWorship Fill Output (Windows display #2) → ATEM HDMI Input 2
- EasyWorship Key Output (Windows display #3) → ATEM HDMI Input 3
- ATEM HDMI Out → Multiview Monitor
Windows Display Configuration
- Open Windows Display Settings.
- Confirm three displays: Primary, Display #2, Display #3.
- Assign Display #2 = Fill output and Display #3 = Key output.
- Set both ATEM-connected outputs to Extended mode.
- Use Identify to confirm which numbered display is mapped to Fill and which to Key.
Callout: Mapping Windows Displays to Fill/Key
Windows Display #1 → Primary monitor (control screen)
Windows Display #2 → Fill output (graphics)
Windows Display #3 → Key output (transparency matte)
Important: always confirm the display numbers in Windows before assigning them inside EasyWorship.
EasyWorship Configuration
- In EasyWorship → Edit → Options.
- Set Output Monitor = Display #2 (Fill).
- Set Alpha Channel = Display #3 (Key).
- Click OK.
At this point, EasyWorship is generating both Fill (graphics) and Key (transparency matte).
Section 2: Connecting and Configuring the ATEM Software
With EasyWorship sending Fill and Key outputs, the next step is to configure the Blackmagic ATEM mixer so it knows how to use those signals. This involves mapping the Fill and Key to the correct inputs, setting up an Upstream Luma Key to combine them, and customizing the multiview layout so your production team can monitor everything clearly. This is where the signals from EasyWorship become polished, real-time overlays in your live production.
Step 1: Assign Inputs
In ATEM Software Control → Settings → Labels, rename:
- Input 1 = Camera
- Input 2 = Fill
- Input 3 = Key
Step 2: Configure the Upstream Key
- Open Palettes → Upstream Key.
- Select Luma Key.
- Fill Source = Input 2 (Fill).
- Key Source = Input 3 (Key).
- Adjust Clip and Gain until edges look clean.
- Press On Air to activate overlays.
Step 3: Customize Multiview
In Settings → Multiview, assign:
- Preview (top left)
- Program (top right)
- Below: Camera, Fill, Key, Media Player, Streaming/Recording status, Audio Mixer
Step 4: Test and Fine-Tune
- Test lyrics overlayed on live camera.
- Use EasyWorship’s Clear button to instantly hide overlays.
- Cross-check sync and transparency (see Part 3 and Part 4 for fixes).
Troubleshooting Tips
- Overlays look transparent? Recheck GPU color settings (Part 3).
- Flicker/ghosting? Ensure key/fill sync (Part 4).
- Inputs mismatched? Verify ATEM labels.
Quick Fix Checklist
- EasyWorship dual outputs configured (Fill + Key).
- ATEM inputs renamed clearly.
- Luma Key set correctly.
- Multiview arranged for production clarity.
- Volunteers trained to use On Air and Clear.
Key Takeaways
- EasyWorship + ATEM = professional broadcast overlays.
- Fill/Key setup in EasyWorship provides the foundation.
- ATEM’s Luma Key merges graphics seamlessly over live cameras.
- Custom multiview ensures volunteers can confidently run production.
Wrap Up
This two-part setup, EasyWorship configuration and ATEM software control, completes the Alpha Key workflow. With your system correctly prepared, lyrics, scripture, and sermon notes will appear crisp, clear, and distraction-free. Alongside HDMI-to-SDI conversion, transparency fixes, and sync solutions (Parts 2–4), your church can now achieve broadcast-quality worship production.
Next steps: Review Part 2 (HDMI to SDI), Part 3 (Transparency Fixes), and Part 4 (Key/Fill Sync) to complete your production workflow.
