Beware if your how to video only shows the LHD version of your car......
Simple pollen filter replacement, Renault Scenic Mk3. One pane out under dash, reach up behind heater, find plastic door, 2 screws, door off, old filter out, new one in, reverse steps.
....except if your car is RHD, where changing the pedals to the other side without moving any of the master cylinders etc (as this would cost money) means the entire clutch pedal assembly, hydraulic pipes and all, is in front of the nice little door for the filter. Reaching all this is also hampered by the steering wheel and column, etc.
I've managed to find one video of an RHD car (a normal Megane, but they're the same) and you could tell by the bloke that filmed it's demeanor that he had defnitely been cursing all things French off camera.....