Welcome to another BizVid Communications video tutorial. The title of today’s Vlog is “How to Blur a Moving Subject in Premiere Pro.” This video is an update to one I produced a few years ago called “How to Blur Faces in Premiere Pro.”
The two ways I use to blur a subject are “Gausian Blur” or “Mosaic.” Today, I will show you both because the process is different for each. Let’s get started. I placed in the timeline a proud US Marine walking to meet another person but I’d like to blur her face. First I will use the “Gaussian Blur” method.
In the Effects Panel I’ll type in the word “Blur” and Premiere will reveal all of the blur options available. To be clear, you can use any of the “Blur’s” listed as they all look a little different. But today, I’ll start with “Gaussian Blur” then show you, “Mosaic.” Next, I’ll place the“Gaussian” effect onto the video clip. I can do this by double clicking the effect or, dragging it onto the clip.
Next, I need to select the mask tool that will be used to highlight the specific area to blur. The’re three options: “Elipse,” “4 Point Polygram,” or the “Pen.” But, because I want to track and blur a face, I will use the “Elipse” mask. As soon as I click on it, it appears in the program window. Be sure that your play head is at the point where you want the blur to begin. At this point you don’t see any blurring and won’t until I add it. If I were to add it now, it would be difficult for me to precisely form the ellipse around the face.
To form the ellipse, I will use these little square handles. Once formed the way I want it, I will add the blur by increasing this number to about the 50 mark. Obviously you can choose whatever degree of blurriness you want. I’ll also add a slight “feather” so that there are no hard edges.
Next I’ll begin the mask tracking process. I can do that one frame at a time like this….or, by letting Premiere do it automatically like this. The program is pretty good about keeping a precise track. If it does start to go awry, you can stop the progress and manually adjust, then start again. One the tracking finishes, give your video a watch and see how it your “Gausian Blur” turned out.
The other method I talked about was using a mosaic to blur the subject. So, I’ll type in “Mosaic” then double click to add it to the clip. As you can see, unlike the “Gaussian Blur,” the “Mosaic” applies the effect to everything and It’ll stay that way until I select a masking tool. Again, I’ll use the “Ellipse” mask. Next, I’ll reduce the mosaic effect to a point where I can more easily shape the ellipse around the face. I’ll do that right here at “Horizontal” and “Vertical” blocks.
Next, I’ll use the same procedure to form the ellipse as shown earlier in this tutorial. Now that I’m done forming, I will add the mosaic effect. Next, I’ll start the mask tracking…….and here’s the finished result. As with “Gaussian Blur,” If you have several points on a clip that need blurring, simply keep applying the “Ellipse” or any of the three masks as many times as necessary like this. So, I hope this tutorial has been helpful. Be sure to subscribe and also visit the BizVid Communications website to see the type of work we produce. Thanks again and happy editing.