Very large FBR files may require too much memory to open on all PCs. This is most commonly caused by recording moving video or video games with GDI record mode.
A converter tool, which can convert GDI movies to smaller MPEG movies, can be downloaded from the following link:
To use the converter, extract the downloaded zip file to your FlashBack installation folder and then launch it using GDI2MpegConverter.exe. Select the file to be converted and enter a name for the converted file and then click the Convert button.
By converting to MPEG, the file size may be reduced enough to allow the Player to open the file.