Do you know which spec the contains the eratta for top channels? There
doesn't seem to be much of value in Amd.6. Do you have any real
examples of a multichannel stream with a top center speaker or any
supporting documentation you could point me at?

Hi

The relevant spec is ISO/IEC 14496-3:2009/AMD.4:2013  and  can be found here:

http://www.doc88.com/p-7754944656492.html

pce has a new element in the comment field :

height_extension_element ;

when it is not specified, the channel elements default to normal height.

So this removes any ambiguity on the channel positions.

I'll give a shot at adding that both on encoder and decoder in the PCE bits next week.

Best



Thanks,
Alex
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