Description of the issue

(container format) (container element for independent frame (IF)) does not indicate this frame is an independent frame (IF) but USAC AudioPreRoll is not present

Groups

Crosscheck

References

ISO IEC 14496-12 (MPEG-4 ISO base media file format):
group_description_index: "gives the index of the sample group entry which describes the samples in this group"

ISO IEC 23003-3 (USAC):
AudioPreRoll: "If independently decodable frames (IF) [...] are to be signalled, they shall be signalled by means of the AudioPreRollEntry"

Possible solution/action

ISO IEC 14496-12:
Fix the muxer in order to correctly fill sbgp without this frame number, then remux the content.

Severity

Error