Crash when muxing AAC

[AQUAR]

IIRC, some time ago you could not import AAC at all.
People were saving (exporting) AAC from ADM and also found that they could not even import that file (raw data).
Then on request,  Mean added basic functionality that exported the AAC audio in ADTS and allowed its importation.

Probably the reason why there are issues with non ADM created external AAC audio.

[eumagga0x2a]

The issue was an unforseen side effect of [audio] Add support for external eac3 track. The added check for E-AC3 sometimes wrongly recognized AAC as E-AC3; the ADM_ad_lav code subsequently tried to parse AAC as E-AC3 (the crash in the parser is not fixed, just the misdetection).