`ItemLocationBox` (`iloc`) `base_offset` field is incorrect

Open baumanj opened this issue 4 years ago • 0 comments

When loading clusterfuzz-testcase-minimized-avif-4914209301856256.avif.zip), the base_offset is reported as 18446744073709486000, but the 8 bytes starting at offset 118 are FFFF FFFF FFFF 000B which is 18446744073709486091 in base 10.

See ISOBMFF (ISO 14496-12:2020) § 8.11.3 for the details of the iloc box.

Screen Shot 2021-12-03 at 4 05 04 PM

Dec 04 '21 00:12 baumanj