In this tutorial, we will show you how to create a realistic flowing lava effect using Adobe After Effects. Follow these steps to achieve this dramatic visual effect.

**Step 1: Prepare Your Footage**
Download the footage provided in the tutorial or use your own. Import your footage into Adobe After Effects and create a new composition.

**Step 2: Create a Lava Overlay**

1. Create a new solid layer by going to **Layer** > **New** > **Solid**. Name this layer "Lava Overlay".
2. Use the **Pen Tool** to create a mask around the area where you want the lava to flow (e.g., a street or a surface).
3. Adjust the mask points to match the contours of the surface, making sure the mask fits the area precisely.

**Step 3: Duplicate Your Footage**

1. Duplicate your original footage layer by selecting it and pressing **Ctrl+D** (Windows) or **Cmd+D** (Mac).
2. Move the duplicated footage layer above the "Lava Overlay" layer in the timeline.
3. Change the blending mode of the duplicated footage layer to **Multiply** or **Overlay** to blend it with the lava effect.

**Step 4: Add Texture to the Lava**

1. Apply a lava texture to the "Lava Overlay" layer by importing a lava texture image and positioning it over the solid layer.
2. Change the blending mode of the lava texture layer to **Overlay** or **Soft Light** to integrate it with the solid layer.
3. Adjust the opacity and color balance to achieve a realistic lava appearance.

**Step 5: Animate the Lava Flow**

1. To animate the lava flow, apply the **Turbulent Displace** effect by going to **Effect** > **Distort** > **Turbulent Displace**.
2. Adjust the **Amount** and **Size** parameters to create a flowing effect.
3. Keyframe the **Evolution** parameter to animate the movement of the lava over time.

**Step 6: Add Additional Effects**

1. Apply the **Glow** effect to the "Lava Overlay" layer by going to **Effect** > **Stylize** > **Glow**. Adjust the settings to make the lava glow realistically.
2. Use the **Heat Distortion** effect by going to **Effect** > **Distort** > **Heat Distortion**. This will add heat waves and enhance the realism of the lava.

**Step 7: Final Adjustments**

1. Make final adjustments to the color, brightness, and contrast of the lava effect to ensure it blends seamlessly with the background footage.
2. Adjust the mask feather to soften the edges and make the lava look more integrated into the scene.

**Step 8: Render and Export**
Once you are satisfied with the effect, render and export your composition. Go to **Composition** > **Add to Render Queue** and choose the appropriate settings for your final output.

For a detailed, step-by-step guide on creating a lava floor effect using Adobe After Effects, watch the full video tutorial.