I loaded a 10bit H.264 (e.g. 4K 4-2-2 10bit) video shot with a SONY α7sIII, but I can only import sound.
10bit H.264 is only supported by the paid version of DaVinci Resolve Studio.
As a countermeasure, it is "importing after changing to another format such as Apple ProRes", "shooting in 8bit", and "purchasing a paid version".
Even consumer models such as the SONY α7sIII, which are purchased by people with particular preferences, can shoot in 10bit H.264, so I wonder if this condition will change in the future.