Steps to reproduce the problem:
Only ARGB/BGRA_8888 can work now, consider supportting for other bitmap pixel formats.

What is the expected behavior?

What went wrong?
Only ARGB/BGRA_8888 can work.

Did this work before? N/A 

Does this work in other browsers? N/A

Chrome version: 55.0.2883.87  Channel: stable
OS Version: 
Flash Version: Shockwave Flash 24.0 r0