scrubbing through movie

hi just wondering whether this is possible and the best way to go about it.

i have a high poly city scene which i cant import into unity as it will be too heavy on memory when run on an IOS device.

if i render a pan in the modelling software could i then import the subsequent movie or frames into unity and control them like a movie?

eg play/pause. have a slider which scrubs through the video or frames (when slider value is 0 video is on 0 frames or 0 seconds. when value is 1 video is at the end of the video so as you move the slider you are controlling the playback)