[MEncoder-users] losing 5.1 audio on -oac copy transcode
lists at eastcheap.org
Thu Sep 25 08:40:19 CEST 2008
On Tue, 23 Sep 2008, Wes Morgan wrote:
> If I use the "-channels 6" option when ripping, "file" reports that the
> resulting AVI has the proper number of channels.
I see this as well. It looks as though mencoder, directly or indirectly,
is using a52_frame() to obtain stream information where it should be using
a52_syncinfo(). The former returns information about a decoded frame
_after_ mixing to the requested number of channels. The latter, objective
information about a frame (at least according to the a52dec
The end result is spurious information being placed in the avi file (auds
chunk?). The audio stream itself is unmodified.
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