Getting transparency issue on android build

I have a scene in which i am using unlit/transparent shader for some Quads and playing a video with alpha layer on them. In windows editor on play and in scene there is no issue in transparency visibility, but on android build transparent area is turning black.

In video settings it is taking the default codec. So it is showing alpha in build, while in editor it is taking internal alpha. In video advanced settings we have to change codec