okay, no clue why that helps. 
Try also keeping 'Create qp file chapters' enabled while making sure that 'x264->Frames->Advanced Frame Settings->Open GOP' is disabled.
Cu Selur
Ps.: Using ffmpeg instead of MP4Box for muxing also works.

Try also keeping 'Create qp file chapters' enabled while making sure that 'x264->Frames->Advanced Frame Settings->Open GOP' is disabled.
Quote: So what's "Create qp file chapters" is use for?It makes sure that at each chapter point an I frame is created to make sure that jumping to the chapter point properly works.
Cu Selur
Ps.: Using ffmpeg instead of MP4Box for muxing also works.
----
Dev versions are in the 'experimental'-folder of my GoogleDrive, which is linked on the download page.
Dev versions are in the 'experimental'-folder of my GoogleDrive, which is linked on the download page.