Not everything on TikTok is a video file. Photo-mode posts are a single image with a music track layered over it, and slideshows are a sequence of images that auto-advance. Paste any of the three into the box above and the tool detects which type it is: a standard video returns an MP4, a photo post can return the image and the audio separately, and a slideshow returns each frame individually or merged into one MP4 with the soundtrack intact.