After being victim to the frame difference between VR and video mode I am now setting chapter points with edit mode set to GOP. However the edit screen still advances frame by frame and allows you to divide at any point. The only way I can see to check is to preview which gives you the first and last few seconds of the chapter. Ive been very lucky and the first 25 chapters are ok but the 26th chapter is about 5 frames out at the start. So this leads me to ask 2 questions. 1) Am I doing something wrong in that surely if im using GOP mode then I shouldbe advancing 1/2 a second at a time rather than a frame 2) If I have inserted at the wrong point is there any easy way to move the chapter forward or back or do I have to merge chapters again and then redivide?