add AAC track issue

[Jan Gruuthuse]

Re-encoding audio tracks to aac seems OK
Adding aac (.aac or .m4a) audio track seems to be problematic. (Ubuntu 14.04.4 LTS 64-bit)

Test files:
- mp4 video without audio track NoAudio.mp4 / 3.9 MB
- stereo track aac: AudioStereo.aac / 244.4 kB
- stereo track m4a: AudioStereo.m4a 239.7 kB

What are your findings? Please report back?

[mean]

External AAC is not supported

[Jan Gruuthuse]

OK, I was not certain about that. So is confirmed, thanks.