Click the green flag twice to sync the audio and video. How I did it: I converted a video to gif using EZGif.com (shoutout to them madlads) Set the resolution of the GIF to 480xAUTO. This will ensure that the video stays the same aspect ratio and also makes it convenient because Scratch’s stage is 480 px wide. Wait for it to process, then save the GIF to your computer. Now, import the GIF as a costume and delete the very first sprite (a blank space) Code it like I did and make sure the (1/__) is set to the framerate. UR DONE!!
turbowarp recommended https://turbowarp.org/1351211229/fullscreen