Transitions/Effects/Layouts don't change on preview video until the video has been paused and started again.

[Ivan Peevski]

It becomes difficult to quickly preview a transition or an effect and decide if it's the right one to use if you have to pause and start the video again to see how it looks with it applied (if you are already previewing the video)

[Ivan Peevski (cyberhorse)]

Additionally muting/disabling video don't get applied either until preview has been paused/restarted.

[itomailg (itomailg)]

a solution:

Add the lines 307 and 308 to file project.py

                                self.RefreshXML ()
                                self.form.MyVideo.pause ()

video sample

http://www.youtube.com/watch?v=RI44OD3rVjI

[Jonathan Thomas (jonoomph)]

Thanks for suggesting this fix, but it cause too much delay for larger projects. This type of improvement will be possible using our new editing library, coming soon. So, I'm going to mark this as "Won't Fix" for now. Thanks.