To download all objects using wget:

wget -r -H -N --cut-dirs=4 --include-directories="/v1/" "https://swiftbrowser.dkrz.de/public/dkrz_1e33ba3a-9ecb-452f-93b9-583cf4a66e57/ICON-HErZ/Visualization/?show_all"

Name
NARVAL_DOM01_CLCT_VELMAG_ts_0.75.mp4
NARVAL_DOM01_TQC_VELMAG_ts_0.75.mp4
NARVAL_DOM01_VELMAG_CAPE_ts_.0.75.mp4