White artifacts with S905X4 video decoder

Does it look like this?

s905x4 rev d is affected by an AML bug in interlaced h264 playback on kernel 4.9 (CE-NG). The bug doesn’t exist in kernel 5.4 (probably your Android kernel version). Amlogic didn’t provide a 4.9 kernel fix. This problem doesn’t exist in CE-NE (5.4) and CE-NO (5.15).