How to Add Drop Shadow to OBS Webcam

This guide provides a straightforward, step-by-step walkthrough on how to add a professional drop shadow to your webcam source in OBS Studio using the dedicated OBS Shader Filter plugin. You will learn how to install the plugin, apply the shader filter directly to your camera feed, and adjust the settings to achieve a clean, modern aesthetic for your live streams or video recordings.

Step 1: Install the OBS Shader Filter Plugin

To add a drop shadow, you need the OBS Shader Filter plugin, which allows you to apply custom graphic effects to individual sources.

1. Download the latest version of the OBS Shader Filter plugin from the official OBS Project forum or GitHub page.
2. Close OBS Studio if it is currently running.
3. Run the installer or extract the zip file contents into your OBS Studio installation directory (usually C:\Program Files\obs-studio).
4. Relaunch OBS Studio.

Step 2: Apply the Shader Filter to Your Webcam

Once the plugin is installed, you can apply the drop shadow effect directly to your webcam source.

1. Locate your webcam source in the Sources dock of OBS Studio.
2. Right-click on the webcam source and select Filters.
3. In the Filters window, click the + (plus) icon under the Effect Filters section.
4. Select User Effect from the dropdown list. You can name this filter “Drop Shadow” and click OK.
5. In the filter settings, click the Browse button next to the “Effect file path” field.
6. Navigate to the folder where the shaders were installed (typically inside the obs-plugins/cloned-plugins/obs-shader-filter/shaders directory) and select the file named drop_shadow.effect (or a similarly named shadow shader).

Step 3: Configure the Drop Shadow Settings

With the shader loaded, you will see several sliders in the filter properties window to customize the appearance of the shadow.

• Shadow Color: Click this to change the color of the shadow (black or dark gray is recommended for a natural look).
• Opacity: Adjust this slider to control how transparent or solid the shadow appears.
• Offset X and Offset Y: Use these sliders to push the shadow horizontally (X) and vertically (Y) away from your webcam border.
• Blur Size / Sigma: Increase these values to soften the edges of the shadow, creating a smoother, more realistic depth effect.

Step 4: Fix Shadow Clipping (Optional)

Because OBS sources have strict bounding boxes, your drop shadow may get cut off at the edges of your webcam frame. To fix this:

1. Right-click your webcam source in the Sources list and select Group Selected Items.
2. Apply the User Effect (Drop Shadow) filter to the Group instead of the individual webcam source.
3. This adds padding around the webcam, allowing the drop shadow to render fully without being cropped by the edges of the camera source.