Notes about the KFT file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The KFT file type is primarily associated with 'Matrox X Tools' by Matrox Electronic Systems Ltd.. A keyframe is a 2D or 3D effect; a realtime DV effect or transition. You can use Adobe Premiere to create keyframe files.