+--------------------------------------+
|          isobmff validation          |
+--------------------------------------+

Specification description: ISO Base Media File Format
MPEG-4 part 12 - ISO/IEC 14496-12 - m17277 (6th+FDAM1+FDAM2+COR1-R4)

[isobmff][Rule #11] Error: Found non-unique track identifier 2

========================================
[isobmff] 1 error(s), 0 warning(s).
========================================

===== Involved rules descriptions:

[isobmff][Rule #11] Section 6.1.4
The track identifiers used in an ISO file are unique within that file;
no two tracks shall use the same identifier.