How to Do Face Replacement in Video Using Face Tools

Face replacement in videos has become a popular thing today. People create content for video platforms like YouTube, TikTok, and Twitch. They may sometimes need to replace the face of the persons in a video for creating a funny clip, a parody, or even a meme. Some streamers may also want to replace their faces for privacy or just for fun. There are quite a few face changer software available today. They make face swapping in videos simple and easy. These tools may use different techniques to accomplish the same.

Methods Of Replacing A Face In A Video

Even though there are several tools available for face swapping in videos, they rely on one of the two methods. They either use an AI algorithm to change a moving face in videos, or they replace the face with another image, mosaic, or picture.

1. Face-Swapping AI (Artificial Intelligence) Technique

The primary method of face replacement in videos is using an AI (Artificial Intelligence) face-swapping technique. The method first surfaced a few years ago and has been praised and criticized since into introduction. Any video created using a face-swapping AI technique is popularly known as a “deep fake”. 

These techniques replace the face of an existing person in a video with the face of another person such as a celebrity, politician, someone famous, or even an unknown person. It uses machine learning – a field related to computers and AI that involves pattern detection and inferencing for performing tasks using advanced algorithms. To be more specific, the AI technique or tools use Generative Adversarial Networks or GANs to create a deep fake by face swapping in videos. The process utilizes two machine learning algorithms, which are basically a set of instructions to the computer for performing a certain task (change a moving face in videos in this case). 

The first Machine Learning algorithm uses a data set for face replacement in videos. It will include the images or videos of a person whose face will replace the existing face in the video. The algorithm will study the images or videos of the person and then try to forge the required video. However, it will make some mistakes the first time it forges the video. To counter the imperfections, a second Machine Learning algorithm is used that detects forgeries in the video. 

The second algorithm analyses the forged video created by the first algorithm. If it detects that the video is fake, the first algorithm is run again. Only this time, the first algorithm “learns from” and tries to rectify the mistakes in the faked video. The process continues until the second algorithm can no longer detect if the video created by the first algorithm is authentic or fake. The video created by the face changer software is super realistic and it is very hard for the viewers to identify its authenticity either. 

It takes time for creating a realistic deep-fake by face swapping in videos. Running a machine learning algorithm is taxing on the computer and it may take hours or even days to create one video. The higher is the number of images and videos available of a person, the easier it is to forge their faces into videos. People who live in the public spotlight, such as celebrities, politicians, business people, etc., are more likely to be targeted as a large number of images and videos featuring them are available publicly. 

Individuals don’t need to be a computer expert to change a moving face in videos for creating deep-fakes, although it does require some level of computer skills. There are many tools available, such as “Zao” and “FakeApp”, that allow people to change a moving face in a video easily. Anyone can create a deep-fake video using these tools. 

Even though face-swapping AI (Artificial Intelligence) techniques create super-realistic videos, they have been criticized as well. Several compromising deep-fake videos have surfaced with the faces of celebrities and well-known public figures. Deep-fake videos featuring politicians have also been made to malign them for political gains. Face replacement in videos can be used to manipulate the general public. A person may create a deep-fake video wherein the president or prime minister of a country declares war, causing panic among the public which leads to chaos. Some applications (like Zao) can reserve the right to use the images uploaded by its users which may cause privacy concerns.

Applications and algorithms using face-swapping AI techniques are in the grey area now due to their misuse. Industry experts and governments of various nations are proposing regulation or ban on the use of such applications altogether due to the risks posed by them.

2. Replacing Face With Another Image or Picture

There is another method for face swapping in videos. It is suitable for use by the general population and doesn’t pose any risks. Many face changer software allow you to change a moving face in videos for fun. You can replace the face with a mosaic, cartoon, emoticons, funny picture, or even the image of another person. These are suitable for content creators who create funny or comedic videos.

It is easy to identify face replacement in videos created with such tools. They don’t pose any risk to the privacy of the people and are safe to use. The time required to create such a video is far less as compared to creating deep-fake videos. It can be accomplished on any laptop or computer in a matter of minutes. Users will find it easier to learn and use these tools as well.

Tools for Face Replacement In Videos

If you want to accomplish face swapping in videos, then here are a few popular face changer software for you.

Filmora Video Editor

Filmora Video Editor is a popular tool that you can use for face replacement in videos. It comes with the “Face Off” effect that can be applied to the video by using the timeline. You can choose from multiple funny faces, including mosaic, to replace the face in the video. The software will automatically replace the faces in the video with the one you select. It also tracks motion and matches the faces perfectly for face swapping in videos. is a free online face changer software tool. It allows you to swap the face on one of your custom photos as well as put your or someone else’s face on one of the funny photos available on their website. You can also add text, download the edited file, and share it online using the website.


JibJab is another website that enables you to create funny Ecards and videos by face replacement. You can stick your or someone else’s face on one of their Ecards or change a moving face in videos for downloading or sharing. They have multiple templates available that you can use. It is a great way to create a birthday or festive greeting or a funny video.

Face Swap by Microsoft

Face Swap from Microsoft is a free face changer app. It allows you to swap faces in images with friends or celebrities. The application is available for both iOS and Android devices. 


InShot is another face changer software for Android and iOS devices. It enables you to replace the faces in a video with stickers, icons, or images. The application supports various filters and effects as well.

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