Problems with FLV with alpha channel in Articulate Studio 13 By Irene Bergaretxe Hi!, We have a project developed with Articulate 09 which has some videos in flv with alpha channel (transparency). Now, we have upgraded to Articulate 13 update 3, and all the videos appears without transparency and with the background in black colour. Even when we preview and publish. How can we solved it? Thanks!