You've tried to record a program that uses video hardware acceleration. To get better performance, these applications bypass the usual methods of writing to the screen, and FlashBack cannot capture them.
There are generally 3 types of program that do this:
- Video games - Look in the game's video setting for a 'Rendering' option that you can change to 'Software' or a 'Use video hardware acceleration' option that can be disabled. Alternatively, we would suggest that you try our game recorder, FBX, which is currently free to download at https://fbx.gg/.
- Web browsers - There should be a 'Use hardware acceleration' option that you can disable. The location of this option varies between browsers but you can find it for your browser with a quick Google search. The following article has instructions on how to do this for Firefox and Chrome: http://www.thewindowsclub.com/disable-hardware-acceleration-firefox-chrome
If it is a video being viewed in a web browser, the embedded video may have its own setting that overrides the browsers setting. If you right click on the video, a menu should appear which may have a Settings option. If it does, it will like have an 'Enable hardware acceleration' option in there.
- Video players - If it is a video player like Windows Media Player or VLC, you may be able to find a setting in the Player to turn off acceleration features, or 'overlays'.