By using the slow motion filter, you can effectively double the length of your video. This is the only way to send video Snaps that are longer than 10 seconds. [1] X Research source
Press and hold a sticker for a moment to pause the video. This will allow you to “pin” the sticker to an object in the video, and it will track that object throughout the entire video. See Use 3D Stickers in Snapchat for detailed instructions. [3] X Research source
