Merge four videos app is app to merge four videos to one video. The source of video can be the same video or different video. What is the function of this four video app? There are some function of this app:1. We can compare four videos in one time shoot. Sometimes we want to compare and want to see what is different among four videos. With this merge four videos app we can do it simple and fast.2. We can make unique one video with the source are four videos. It will make our video become video fancy and will make our video become unique or different3. We can change the source of the sound of the video with our own sound. This is the simple way, where we can mute all the sound of the video and we can replace it by the sound come from mic or external mic.4. We can change the sound of the video with the sound of the other video. In this case we can mute sound of the three videos and replace it with the one sound of video.What is the feature that available in this four video editor?There are some features that are available in this app:1. We can select the kind off screen, either portrait screen or landscape screen. If our video source is portrait it will be good if we choose portrait screen. When we have the source of video is in landscape format, it will be good if we choose landscape screen.2. After recording process we can instantly watch the video result without browse the file manager.3. We dont need to adjust the position of the track of video when start recording. The app will automatically start from beginning when we click REC button.4. Beside for recording, this app can be also used for play four videos simultaneously because inside this app equipped with four video player independently. So in case we just want to use this app app just as a four video player, we can use it without recording.5. How to stop four videos recording? To stop four video recording is very simple, we can click VDPPT button while recording. VDPPT button is actually REC button that automatically change to VDPPT button when the user click REC button. The VDPPT button will be changed automatically to REC button again when the user click VDPPT button.Finally enjoy this simple four video app to merge four videos as simple as possible.