dash: out of sync audio after seek
http://yt-dash-mse-test.commondatastorage.googleapis.com/media/car-20120827-manifest.mpd
[00007fb9180040a8] adaptive demux debug: Representation 8
[00007fb9180040a8] adaptive demux debug: InitSegment [#0](https://code.videolan.org/videolan/vlc/-/issues/0) url=http://yt-dash-mse-test.commondatastorage.googleapis.com/media/car-20120827-8b.mp4 @0..591 time 0
[00007fb9180040a8] adaptive demux debug: SubSegment [#0](https://code.videolan.org/videolan/vlc/-/issues/0) url=http://yt-dash-mse-test.commondatastorage.googleapis.com/media/car-20120827-8b.mp4 @852..40521 time 10
[00007fb9180040a8] adaptive demux debug: SubSegment [#1](https://code.videolan.org/videolan/vlc/-/issues/1) url=http://yt-dash-mse-test.commondatastorage.googleapis.com/media/car-20120827-8b.mp4 @40522..79856 time 20
[00007fb9180040a8] adaptive demux debug: SubSegment [#2](https://code.videolan.org/videolan/vlc/-/issues/2) url=http://yt-dash-mse-test.commondatastorage.googleapis.com/media/car-20120827-8b.mp4 @79857..119261 time 30
[00007fb9180040a8] adaptive demux debug: SubSegment [#3](https://code.videolan.org/videolan/vlc/-/issues/3) url=http://yt-dash-mse-test.commondatastorage.googleapis.com/media/car-20120827-8b.mp4 @119262..158810 time 40