Broken AAC Audio in Lumia 920 Videos

[Iwan Gabovitch]

Videos recorded with Nokia Lumia 920 (Windows Phone 8) play back with a delay and without sound.

Command line output attached. Download a test video from ​https://app.box.com/s/r11d34h5xo7dwusjksy4

kdenlive is also affected, VLC is not.

Reproduced on MPlayer SVN-r36498-snapshot-4.8.2 on Arch Linux 64bit and 32bit. Reporting from 64bit.

Videos recorded with Lumia 820 seem to be affected in the same way. I suspect this might be a regression, but I can't remember whether or not these files played back successfuly months ago or not.

[Iwan Gabovitch]

mplayer output when playing back lumia 920 made video

[reimar]

I can't reproduce, the file plays fine for me with latest SVN MPlayer (r36558) and latest FFmpeg.
It seems to me the FFmpeg copy you built against is quite outdated:

libavcodec version 55.39.100 (internal)

I have:

libavcodec version 55.46.100 (internal)

While it looks like it _should_ be newer, on Nov. 4th there was this fix to FFmpeg which sounds related:

commit 019247bdc326a90bf20d3ce5d2413cc642e8bb08
Author: Hendrik Leppkes
Date: Mon Nov 4 16:22:27 2013 +0100

avformat/mov: only force parsing for video tracks if stss is empty

Fixes playback of some AAC streams, which are otherwise mangled by the
parser, and stss is typically only valid for video anyway.

Please reopen if you can still reproduce after making sure you have a version newer than this at least (preferably absolutely latest of both MPlayer and FFmpeg).