Martin,
Are you sure you are looking for ITU-R BR./138/?
I've found ITU-R BR.1384-2 that starts with the same digits and deals
with the same subject. Please see if it is this one, which has 4, 8 and
12 channels:
https://www.itu.int/dms_pubrec/itu-r/rec/br/R-REC-BR.1384-2-201103-I!!PDF-E.pdf
<https://www.itu.int/dms_pubrec/itu-r/rec/br/R-REC-BR.1384-2-201103-I%21%21PDF-E.pdf>
Part 1,
https://www.itu.int/dms_pubrec/itu-r/rec/br/R-REC-BR.1384-1-200504-S!!PDF-E.pdf
<https://www.itu.int/dms_pubrec/itu-r/rec/br/R-REC-BR.1384-1-200504-S%21%21PDF-E.pdf>
is also available but it has been superseded by the former.
Regards,
Feedrico
On 23/07/2015 14:04, Martin Leese wrote:
On 7/16/15, Martin Leese <martin.le...@stanfordalumni.org> wrote:
Martijn van Beurden wrote:
I would propose: 0000-0111 : (number of independent channels)-1.
The channel order is defined through the
WAVEFORMATEXTENSIBLE_CHANNEL_MASK vorbis comment, if defined. If
no WAVEFORMATEXTENSIBLE_CHANNEL_MASK is present, the channel
order follows SMPTE/ITU-R recommendations, which are as follows:
This looks like an excellent proposal.
I tried to find the specific SMPTE/ITU-R
recommendation on channel order. I found a
reference to "ITU-R BR.138", but this is not
available from the ITU-R Recommendations
website. Does anybody have a copy of this?
I found lots of places which state the
SMPTE/ITU-R recommendation on channel
order. But all these are only for 5.1, and
are the usual front left, front right, front center,
LFE, surround left, surround right. I therefore
suspect the SMPTE/ITU-R recommendation is
only for 5.1.
With this in mind, I now propose the following
wording in the FLAC spec:
0000-0111 : (number of independent channels)-1. The channel assignment
and order is defined through the WAVEFORMATEXTENSIBLE_CHANNEL_MASK
FLAC tag. If no WAVEFORMATEXTENSIBLE_CHANNEL_MASK is present, the
channel assignment and order follow SMPTE/ITU-R recommendations (where
defined) and are as follows:
Regards,
Martin
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