Behind the words
A motion background should move enough to feel alive and little enough to stay behind the text: slow gradients, drifting particles, flowing shapes, a rotating planet or a data visualisation. They sit under titles, lower thirds, presentation slides, livestream overlays, stage screens and website hero sections.
Choosing one
Look for low contrast where your text will go, slow motion and no single element that grabs attention. Darken or blur it slightly in the edit so text stays readable. Abstract and rendered backgrounds rarely contain people or logos, so a clip with a commercial-use verdict is usually safe for any project. NASA’s visualisations make some of the most striking free backgrounds; free stock sites like Pixabay have large libraries of abstract loops, linked from every search.
