Thanks. I think I will wait for the release, but I do have it downloaded for reference just in case I really need the feature before then.
I can confirm that after processing the video from ogv to mp4 it works.
The only other workaround seems to be to disable splash for the (ogv) video and globally (in FV settings).
I hope this helps you to troubleshoot the issue. :)
I noticed that the problematic video is .ogv
The issue does not seem to happen on the other videos, that are not .ogv (they are webm)
Unsure if this is the cause, but this is noteworthy.