Please remember that permission must be obtained from the original poster of the video before it can be republished. The original poster owns the rights to the content, so ask them in the comments or send them a message to ask if it's okay. Now, open the Instagram app and find the video you want to republish. Then click on the three dots in the top right corner of the post. From the menu that appears, select "Copy Link". Then, go back to the home screen and open the "Republish" app. The app will automatically detect that you have copied the Instagram post URL. click the arrow on the right to continue. You will see the username of the person who originally posted the video in the bottom left corner. If desired, you can change the color of the graphic by clicking on "Light" or "Dark". You can also change the position of the graphic, so it is located in any corner of the video. Once you are satisfied, click the "Republish" button at the bottom. Now, click on "Copy Caption" and open "Instagram". Click on Feed to start sharing the video to your profile. If the video was not originally shared as a cropped square post, you may have to click on the arrow on the left side of the screen to shrink it and allow the entire video to be displayed. Then click Next. Now you can choose to add filters to the video as needed. Click on a filter to apply it. Then click Next in the upper right corner. Now you can add a title to the post. The title of the original post has been copied to the clipboard, so if you want to share the original title with the original post, tap in the text box and then tap "Paste". You can also add your own comments or write the original title if desired. When you're ready, tap "Share" in the upper right corner to post the video to your Instagram profile.