[MPlayer-dev-eng] [patch] Support EAC3 in MKV container

Andrew de Quincey adq_dvb at lidskialf.net
Sun Jan 25 21:18:03 CET 2009

Hi, I've just tried muxing an EAC3 track into an MKV using mvktoolsnix  
2.4.1. It muxed it ok, but mplayer rejects it with an unknown codec  
"A_EAC3". The support for this codec was added to mkvtoolsnix on  
2007-03-02  (see  

The attached patch adds support for new "EAC3" stream type in the mkv  
container. Note: I originally tried simply setting it to the mplayer  
standard AC3 a_formattag 0x2000, but this does not work, so I have  
used the EAC3 fourcc instead.

Unfortunately the channel ordering is /definitely/ screwed (all  
dialogue is coming from the rear left + front right speakers); I'll  
investigate this issue later by comparing with a player under windows.

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