If you hit Esc, does the game continue? If the cutscene video is not starting or ending for some reason, Esc may skip it.
Can you start a new Flames of Vengeance game?
If not, problems with the cutscene at the start of the Flames of Vengeance section of the game can be due to the audio codec. In that case it may help to re-install the
AC3filter audio codec.
Try lowering the game resolution and graphics settings to see if that helps.
Try running the Developer Mode version of the game, to see if that makes a difference.
Try verifying local files: in Galaxy select the game in the left column, then click on the More button, and in the Manage menu select 'Verify / Repair'.
Check for updated graphics drivers; that help one person with a black screen at the FoV transition.
Try the
4GB Patch to increase the amount of virtual memory that the game (or any 32 bit application) can access in 64 bit versions of Windows. One person reported that this fixed their problem with this transition.
Setting the game to run in a window may also avoid problems with this transition. To do so, edit the file below in a text editor and change the one to a zero in Fullscreen="1".
C:\Users\<UserName>\AppData\Local\Divinity 2\Profile\graphicoptions.xml
The easiest way to get to that folder would probably be to copy the following into the location bar in Windows Explorer.
%LocalAppData%\Divinity 2\Profile
To browse there, you may need to set Windows Explorer to show hidden files and folders:
http://www.howtogeek.com/howto/windows-vista/show-hidden-files-and-folders-in-windows-vista/
(covers Vista through Win 10)
Try starting a video in Windows Media Player, pause it, and leave it running in the background when you start the game. That can help if there are problems with certain video filters or codecs.
Try renaming the cutscene videos Endscene_English.wmv and EXP_Intro_English.wmv in the install folder '..\Divinity II - Developers Cut\Data\Video'.
You can disable playing videos, though the game should just skip the video if it is renamed. To do so, in the install folder, edit the '..\data\globalswitches.xml' file in a text editor and change the one to a zero in the term PlayVideo="1" and save.