Demo custom decoder not working

[4ayo]

When trying the custom decoder, i have a black square all the time.

Using Mavic pro
Nexus 5x on Android 8.1.0
Android studio 3.3.1

When calling initCoded() for the first time, width and height are 0 and don't seem to be initialized anywhere (?). If I set this :
this.width = 1280;
this.height = 720;

I get these warnings / errors. I don't know it it's because of these that it's not working.

Notice that the three other buttons are working (Demo TextureView, Demo SurfaceView and YUV Screen shot).

Thanks in advance for any help.

[msunshinelxl]

The same to me
I think it's a bug, the format is not filled with any image data: