The 32-ID-B beamline at the Advanced Photon Source (APS) is dedicated to ultrahigh-speed white beam full-field imaging experiments. By taking advantage of the time structure of the filling pattern in the storage ring, single-pulse imaging can be achieved with an exposure time set by the natural width of the pulse (down to 100 ps) and a frame rate set by the bunch repetition frequency (up to 6.5 MHz). Such “video-mode” ultrahigh-speed x-ray imaging allows to study highly transient, non-repeatable, and/or irreversible materials dynamics in processes, such as dynamic loading, combustion synthesis, materials machining, and additive manufacturing. In the presentation, I will first give a brief overview of the technique, beamline instrument, and associated user programs. Recent beamline developments and experiments on additive manufacturing will be highlighted. I will finish my talk by discussing the future opportunities of materials study using time-resolved x-ray techniques enabled by the APS Upgrade.