[Delayed video not pausing after launching game]

Sorry if I posted in the wrong forum. I think this might be a bug or perhaps I'm trying to achieve something impossible. If I wanted to first show a fanart image in a big box theme and then automatically play a video in say 6 seconds after showing the fanart there's a sort of bug. If you launch the game when the video is already started it will pause the video nicely as is probably intended. However if you were to already launch the game before that six second window Big Box will still start playing the video even after the game was already launched. This will cause the sound of the video to play in the background of the game and is quite annoying. I've tried changing the timing with storyboards but so far I haven't found a good fix for this yet. Does anyone have any ideas on to deal with this?

[A way to blend platforms]

Sorry to also dig up this old thread again but I think I'm trying to describe a similar effect as mentioned here.

To better explain if I were in a games view and wanted two fanarts "crossfading" into each other how would this be achieved? As mentioned the usual way themes go about this is by using a storyboard changing the opacity transition to 0 and loading the new one to opacity 1. However as mentioned above that leaves with a somewhat ugly and undesirable way of nicely fading two images over into each other. What you'll get is a brief moment where you just have to look at your empty/black/static background. So what you'll want to get is the new image fading on top of the old dynamically loaded image. I have looked at other themes for "inspiration" but so far most themes either have that full fade to 0 opacity leaving no/black background or they use different type of transitions. This could be a WPF limitation though. Also I'm trying this by editing the xaml files directly.