Add Transparent Countdown Timer Overlay in OBS

Adding a visual countdown timer to your OBS Studio stream is a great way to build anticipation for upcoming events, Q&A sessions, or stream starts. This guide provides a straightforward, step-by-step walkthrough on how to integrate a transparent countdown timer into your OBS setup using a free external browser source. You will learn how to obtain a timer URL, import it into OBS, and customize its transparency so it seamlessly overlays your video capture.

Step 1: Obtain a Web-Based Countdown Timer URL

To use a browser source, you first need a web-based timer. There are several free online tools designed for streamers: 1. Visit a free countdown generator website such as StreamTimer.io, TickCounter, or vClock. 2. Configure your countdown duration, colors, and font styles. 3. Copy the unique widget or output URL provided by the website.

Step 2: Add a Browser Source to OBS Studio

Once you have your link, you need to import it into OBS: 1. Open OBS Studio. 2. Locate the Sources dock at the bottom of the screen. 3. Click the + (plus) icon and select Browser from the dropdown menu. 4. Name the source (e.g., “Countdown Timer”) and click OK.

Step 3: Input the Timer URL and Dimensions

In the properties window that appears: 1. Paste your copied timer link into the URL field. 2. Adjust the Width and Height settings to match the dimensions recommended by the timer website (commonly 1920x1080 or 800x600 depending on the widget size). 3. Click OK to load the timer onto your preview screen.

Step 4: Ensure the Background is Transparent

Most dedicated streaming widgets have transparent backgrounds by default. However, if your external timer has a solid background, you can force transparency using OBS: * Using Custom CSS: In the Browser Source properties, find the Custom CSS box at the bottom. Replace any existing text with this code: css body { background-color: rgba(0, 0, 0, 0) !important; margin: 0px auto; overflow: hidden; } * Using Filters: If the CSS method does not work, right-click the Browser source, select Filters, click the + icon under Effect Filters, choose Color Key or Chroma Key, and key out the solid background color.

Step 5: Position and Crop the Timer

  1. Click on the timer in your OBS preview window to select it.
  2. Drag the red outer bounding box to resize and position the countdown.
  3. If there are unwanted elements on the edge of the widget, hold the Alt key (Option key on Mac) and drag the edges of the red bounding box to crop the source.