koobas.hobune.stream
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. 
Have you checked the texture's import parameters: there are tabs for default (all platforms) and tabs for each platforms. $$anonymous$$aybe there are differences between them.
Actually here am playing a video with alpha background on quad.
Ho ok, then I can't help you, I don't have experience in playing a video in Unity :(
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
