thats because for some reason mp4box recognized those streams to not use the same settings
its only allowed to merge streams which use the same settings, i think mp4box checks the SPS/PPS for that
maybe you can extract the raw streams from the mp4 and run the h264_parse tool from mpeg4ip over them
this will show you the structure of the headers (SPS/PPS) and if they are identical
__________________
Between the weak and the strong one it is the freedom which oppresses and the law that liberates (Jean Jacques Rousseau)
I know, that I know nothing (Socrates)
MPEG-4 ASP FAQ | AVC/H.264 FAQ | AAC FAQ | MP4 FAQ | MP4Menu stores DVD Menus in MP4 (guide)
Ogg Theora | Ogg Vorbis
use WM9 today and get Micro$oft controlling the A/V market tomorrow for free
|