Backport of "qtdemux: Don't use tfdt for parsing subsequent trun boxes" into 1.20
requested to merge tpm/gstreamer:backport-mr-2409-into-1.20-qtdemux-fragmented-tfdt-and-multiple-trun into 1.20
Backport of !2409 (merged) "qtdemux: Don't use tfdt for parsing subsequent trun boxes".
Commits:
- 12233242 qtdemux: Don't use tfdt for parsing subsequent trun boxes