clever FFmpeg-GUI 3.1.3 instal the last version for mac

I have tried a couple of other app's, one I'd never heard of, 'Lossless Cut', but it's got it's own problems. I was hoping that I might have been able to do it with an avisynth script in the encoding app I use, but I can't get it to cut the audio, so that's even worse. It's not your fault, it's just the way it is, unfortunately, it just doesn't work for me, on the videos I want to cut :(

Well, it seems to be the 'luck of the draw', EVERY video is different, the one you tested obviously had the keyframes in the correct position for the cut, I mean, some of the episodes I've done have been perfect, and others don't come close to the desired cut point. So everything as desired, frame accurate and smart rendered. The start frame fits exactly, the last frame is as desired the last P-frame before the entered I-frame (this guarantees a closed GOP).

Then checked the cut video in Virtualdub2. Selected Frame accurate cut above, pressed check times and then pressed cut. I noted start time and end time and entered them into clever FFmpeg GUI, I loaded the video in Virtualdub2 and chose a B-Frame as startpoint.

The keyframes cannot be moved, they are set by the encoder during encoding.

Clever FFmpeg-GUI 3.1.3 instal the last version for mac