Slideshows are images
If you paste a slideshow into the video tool and nothing useful appears, you are probably looking at a photo post. Those posts do not have an MP4 of the swipe animation. They have the original images, usually JPG, at the size the source provides.
Each image is listed separately, with its pixel size when we know it. Download the frames you need. A batch zip is not offered.
Related: Photo downloader
How to tell a slideshow from a video
In TikTok, a slideshow lets you swipe still photos, often with music. The link path says /photo/ instead of /video/. A normal video link says /video/ and should be pasted on the video page if you want an MP4.
Music on a slideshow is separate. If an audio file is available, it shows as MP3 or M4A. The pictures themselves stay images.
Related: MP3 from a post
Save the photos on your phone
After you tap a photo button, the JPG goes to your browser downloads. On iPhone, open Files and use Share, then Save Image, if you want it in Photos. On Android, the image often appears in Downloads or Gallery.
Only save slideshows you own or have permission to keep. A public link is not permission to repost someone else’s photos.
Related: iPhone and iPad · Android