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<p>Hi Andrew,</p>
<p>I suspect that the configure option should be enable-ambisonics
(instead of enable_ambisonics), but for each of opus, libopusenc,
opusfile and opus-tools git repos (on master branch), when I try
"./configure --enable-ambisonics", I get this error message:</p>
<p>configure: WARNING: unrecognized options: --enable-ambisonics</p>
<p>Thanks for your help.<br>
</p>
<p>Marc<br>
</p>
<div class="moz-cite-prefix">Le 19-12-18 à 11 h 52, Andrew Allen a
écrit :<br>
</div>
<blockquote type="cite"
cite="mid:CABQ9DcsrpcbkZoViy18tQS_NvV3j9GGqdX+X0OwZaa0OaOZOnA@mail.gmail.com">
<div dir="ltr">
<div dir="ltr">Hi Marc,
<div><br>
</div>
<div>In order to use the ambisonics API, if you haven't
already, you will need to activate the enable_ambisonics
build flag during configuration.</div>
<div>Then, when encoding the file, make sure to manually
select mapping family 3 since opus does not auto-detect
ambisonic files.</div>
<div><br>
</div>
<div>Let me know if you have any questions!</div>
<div><br>
</div>
<div>Cheers,</div>
<div>Andrew</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Tue, Dec 17, 2019 at 7:16
PM Marc Lavallée <<a href="mailto:marc@hacklava.net"
moz-do-not-send="true">marc@hacklava.net</a>> wrote:<br>
</div>
<blockquote class="gmail_quote">I compiled the latest (git
master) of opus, libopusenc, opusfile and<br>
opus-tools:<br>
<br>
$ opusenc --version<br>
opusenc opus-tools 0.2-8-g4976421 (using libopus
1.3.1-4-gad8fe90d)<br>
<br>
I tried to encode a 3rd order Ambisonics wav file with the
standard<br>
Ambix (ACN-SN3D) format; opusinfo is reporting :<br>
<br>
Streams: 16, Coupled: 0<br>
Channel Mapping Family: 255 Map: [0, 1, 2, 3, 4, 5, 6,
7, 8, 9, 10,<br>
11, 12, 13, 14, 15]<br>
<br>
How to encode the file so that the Mapping Family is 3, as
suggested<br>
here ? : <a
href="https://people.xiph.org/~jm/opus/opus-1.3/"
rel="noreferrer" target="_blank" moz-do-not-send="true">https://people.xiph.org/~jm/opus/opus-1.3/</a><br>
<br>
Marc<br>
<br>
<br>
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</blockquote>
</div>
</div>
</blockquote>
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