[FFmpeg-devel] [RFC] Channel layouts

[madshi]

Benjamin Larsson schrieb:
> We also need to add a parameter to request the decoded channelmask. For 
> example dca have 2 4 channel layouts. Without a requested channelmask it 
> would only be possible to get 1 layout.
>   

The DTS header specifies which layout the DTS was encoded with.
See bitstream field "Audio Channel Arrangement". E.g. value 7
means "C + L + R+ S" while value 8 means "L + R+ SL+SR".
What sense does it make to request a different decoded channel
mask then is stored in the DTS track?

Regards, madshi.