HW decoder on Amlogic has a bug on VC-1 where it always applies deinterlacing even for progressive content, on all SoCs:
But this is easily solved on Am6b+ by navigating to the VC-1 HW acceleration setting and putting that to exclude 24p so it is done on software instead. Am6b+ is powerful enough to easily handle VC-1 software decoding, so there is nothing to worry about.