Snapchat has a limit on video time in the past, and video duration is not allowed to exceed 10 seconds. However, after optimization, Snapchat has allowed users to create and upload 60-second videos. If you want to edit Snapchat videos longer than 10 sec, you need to continue to press the round camera button after the new video starts recording for 10 seconds. The app will automatically record video stories one after another. All recorded snapshots will appear at the bottom of the screen and you can save them as a new long video.