World's first frame accurate H.264 AVCHD cutter without re-encoding!

This program is great. I am about to purchase but have one problem. I am simply trimming MP4 that all come from same camera, same settings - 1920x1080 @29.97fps After trimming and transcoding the 4 files, they all have slightly different framerates - example: 29.969448 on one and 29.968816 on anothe...