Skip Intro 0:55 If your just changing the pads you will only need to undo the 12mm bottom bolt at 2:53 and then swing the calliper up to fit the new pads. I'll try to make a video of this when I change my next set of pads. Make sure you put the wheel or an axle stand under the car in case the jack fails. This was done on a 1.7 CDTi 2008 Corsa but should be a similar process for most cars.
Opel, How-to, Vauxhall Motors, brake, pads, discs, disks