Saving recordings

HiMy neighbour had their car vandalised last night and whilst the camera has picked up a change in the cars image, somehow the perpetrator managed to avoid being on the camera at all. I have tried to download the footage either side of the time, but it only saves a second of recording. How can I get it to save correctly as it says it is downloading an hour? Is it an hour but because its night its only showing as a second? If so, how can I stop that and get the hour that I need?