If you want to add to a video on TikTok, there are a few things you need to know. First, open the video you want to add to and tap the three lines in the top left corner. Next, select “Edit.” From here, you can add text or emoji. If you want to add music or effects, you’ll need to open the app’s settings and find the video you want to add content to. Once you’ve found it, tap on it and select “Add Media.” From here, you can choose from a variety of options including music, effects, and stickers. ..