Bug#823098: ffmpeg: autopkgtests failing: aac probing failed

[Carl Eugen Hoyos]

Hi!

I sent a patch that probably fixes this issue, very short transport streams 
were never auto-detected by FFmpeg.
http://ffmpeg.org/pipermail/ffmpeg-devel/2016-May/193698.html

Possible workarounds are to increase the audio length with "sine=d=0.2" or 
to set an explicit audio bitrate of 128k with "-b:a 128k" (this was the 
bitrate in FFmpeg 2.8, when the aac encoder was still experimental) to 
increase the output file size.

Thank you, Carl Eugen