When editing video on a DVD+VR disc with PowerProducer, the mark-in/mark-out controls for trimming video clips are disabled. These controls work for DVD-ROM and DVD-VR discs.
The above symptom is associated with, but not limited to, the following systems:
The system is configured with:
Microsoft Windows 8 and DVD-RW drive
The Clip Trim feature is not implemented for DVD+VR discs. This behavior is by design.
This is a current limitation of PowerProducer.
The user should export clips from the disc to the video file and then trim them.