I am happy to announce that we fixed this issue in our latest release v6.07.
Thank you for reporting this to us and especially for providing us with sample video files. This helps so much.
The current version of Viblast doesn't support WSS. I am looking at this at the moment and hopefully will have a solution in the coming days.
I confirm implementation,
I did all the tests now everything is working very good.
Thanks a log guys, you rock