Texture Library
The video textures in your database can be added to any timeline as texture clips. For quick access from within the Timelines editor, the libraries on the right-hand side include a Texture 
tab that lists all of the video textures in the open database.
From the Texture library, you can load database video textures as texture clips by dragging textures from the library and dropping them onto a Texture track.
Textures can also be dragged directly from the Matter sidebar's texture library.
When the timeline is played, the video will be animated simultaneously in all materials using it that are assigned to surfaces in the active viewport.
