How to Pixelate Video in Kdenlive with Obscure

This article provides a quick, step-by-step guide on how to protect privacy in your videos by pixelating sensitive information, such as license plates or faces, using Kdenlive. You will learn how to locate the “Obscure” effect, apply it to your footage, adjust its size, and use keyframes to track moving objects so the sensitive data remains hidden throughout the clip.

Step 1: Add the Obscure Effect to Your Clip

First, import your footage into Kdenlive and drag it onto your timeline. 1. Navigate to the Effects tab (usually located in the properties panel area). 2. In the search bar, type Obscure. 3. Drag the “Obscure” effect from the list and drop it directly onto the video clip in your timeline. A pixelated box will immediately appear on your video preview monitor.

Step 2: Position and Resize the Pixelation Box

With the video clip selected, look at the Effect/Composition Stack panel. 1. In the Obscure effect settings, you will see parameters for X (horizontal position), Y (vertical position), Width, and Height. 2. Adjust these values to resize and position the pixelated box directly over the license plate. You can also drag the corners of the box directly inside the video preview window for quicker adjustments.

Step 3: Track Moving Objects with Keyframes

If the vehicle or camera is moving, the license plate will shift out of the pixelated zone. To keep it covered, you must use keyframes: 1. In the Obscure effect settings, click the Show/Hide Keyframes clock icon to enable keyframing. 2. Move the timeline playhead to the frame where the license plate first appears and position the pixelation box over it. 3. Move the playhead forward in the timeline. When the license plate begins to move out of the box, adjust the X and Y parameters to reposition the box. Kdenlive will automatically create a new keyframe. 4. Repeat this process at regular intervals until the license plate is successfully covered for the entire duration of the clip.