[opus] Why silence is encoded with so many bits?

[Jesus Cea]

I am encoding a minute of absolute mono silence (WAV with wave = 0 
values) and the resulting file is quite big, translating to about 52Kbps.

Quite high for a silence only segment.

I wonder why is so innefficient. Anybody knows?

Any workaround?. Would DTX ctl works to create a OPUS file with "opusenc"?

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Jesús Cea Avión                         _/_/      _/_/_/        _/_/_/
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