How to Add Fire Effects to Video — Free Tool

When to Use Fire Overlays in Video

Fire overlays are essential for action sequences, horror scenes, and dramatic transitions. Whether you are adding a campfire to an outdoor scene, igniting a sword blade for a fantasy short, or framing a YouTube thumbnail with flames, a clean transparent fire overlay is the most flexible starting point.

Pre-rendered fire overlays composited in Screen mode are far easier to work with than trying to rotoscope real fire footage. They integrate cleanly, require no keying, and can be repositioned, scaled, or tinted without any quality loss.

Generating Fire Overlays with FX Labs

Open the FX Labs Fire Generator and begin by setting the width and height of the flame to match your scene. A narrow, tall shape works for torches and candles, while a wide, squat shape suits ground fires and explosions. Use the turbulence controls to add organic flicker, increasing warp intensity for more aggressive motion and reducing it for a calmer burn.

Enable the built-in smoke system to add wispy tendrils rising above the flame. This small detail adds a surprising amount of realism. Set your export resolution and download the transparent PNG.

Compositing Fire in Your Video Editor

Import the fire PNG as an overlay track above your footage in Premiere Pro, DaVinci Resolve, Final Cut Pro, or After Effects. Set the blending mode to Screen or Add. Screen works best for most situations, blending the bright flame into the scene while eliminating the dark transparent areas. Adjust scale and position to anchor the flame where it belongs in the shot.

If the fire looks too flat, duplicate the layer, apply a slight Gaussian Blur to the copy, reduce its opacity to 30 percent, and scale it up slightly. This creates a soft glow around the flame that mimics the way real fire illuminates the air around it.

Matching Fire to Scene Lighting

Convincing fire composites require the scene to react to the fire's light. Add an orange-tinted solid or adjustment layer below the fire overlay and mask it to affect only the areas closest to the flame. Reduce its opacity to around 10 to 20 percent to simulate the warm light cast by the fire onto nearby surfaces. In After Effects, you can use the CC Light Sweep or Point Light effects for more precise lighting control.

Optimizing Fire for Different Formats

For YouTube thumbnails, export the fire at full resolution and position it along the edges of the frame to create a border effect. Keep the subject's face clear of flame coverage to maintain readability at small sizes. For social media reels and TikTok, scale the fire to fill the vertical frame and reduce opacity to create an atmospheric underlayer rather than a literal flame. For cinematic widescreen projects, place the fire in the lower third and grade the entire scene warmer to unify the look.