Post Reply 
 
Thread Rating:
  • 0 Votes - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Solved: Serious Problem #2 - Videos do not start everytime
10-15-2013, 04:30 PM
Post: #16
RE: Serious Problem #2 - Videos do not start everytime
Dear Fritz,

The VideoLab Library is actually a Visual Wrapper around DirectShow.
I reviewed the code and the VideoLab Library is not flipping the image at all.
DirectShow was the culpit.

see: http://msdn.microsoft.com/en-us/library/...s.85).aspx

Sometimes "biHeight" is negative. When it does, then the image is flipped.
In my case, the IDS DirectDraw driver was the cause of the problem.
There has to be a timing issue because we figured out that the more code that was written
during the initialization process(code that was never bound the DirectShow Graph that we are using),
the more frequent the problem was there.

=>By adding the following Parameter in the Windows Registry, the problem was solved.
=> HKEY_LOCAL_MACHINE\SOFTWARE\IDS\uEye\DirectShow
=> FlipImageVertical = 1

Like I told you before, I will not insist that our problems are having the same cause.
I do want you to know that I reviewed the VideoLab code and that it is actually just a wrapper around
DirectX.

If you place your demo application on a dropbox folder in a zipfile (including source code) I will download it and review it at my place.

Maybe I can help you this way.


Best regards, Peter
Find all posts by this user
Quote this message in a reply
Post Reply 


Messages In This Thread
RE: Serious Problem #2 - Videos do not start everytime - Peter - 10-15-2013 04:30 PM

Forum Jump:


User(s) browsing this thread: 1 Guest(s)