fix track to apply edit list with negative offset https://sourceforge.net/p/gpac/discussion/287547/thread/8ff78dcc/
fix track to apply edit list with negative offset
https://sourceforge.net/p/gpac/discussion/287547/thread/8ff78dcc/
DmitrySigaev/gpac-sf,DmitrySigaev/gpac-sf,DmitrySigaev/gpac-sf,DmitrySigaev/gpac-sf,DmitrySigaev/gpac-sf,DmitrySigaev/gpac-sf