DownThemAll is a Firefox Addon that you can use to access your cameras SD card. We recommend you to download the program from here.
You can install the program from your Firefox Addon menu.
Navigate to your SD card directory via the camera´s webUI.
Open the sub directory of the day you want to download and right-click (click on the white-space, not on a specific file) to open the context menu - Choose DownThemAll...
The program should automatically select all media files and you simply have to click Start! to begin the download.
The camera will request your user name and password.
All videos should be downloaded in a minute.