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Hi Jean-Marc, A simpler question. How does opus_encode() generate packets of 20ms (SILK-only or Hybrid)? Concatenating two 10ms frames or doing it straight with just one 20ms frame?

...t to 1. Regards, Chris -----Original Message----- From: opus-bounces at xiph.org [mailto:opus-bounces at xiph.org] On Behalf Of Jea= n-Marc Valin Sent: Friday, October 25, 2013 7:19 AM To: O'Connor, Kevin; opus at xiph.org Subject: Re: [opus] libopus API question - 120ms encoding The general ideao of opus_encode() is indeed to encode a single frame. However, there is an exception for 40 and 60 ms because only one mode (SILK-only) has this frame size. The original code would automatically forc= e SILK-only mode on 40 and 60 ms, but that was suboptimal for mode switchin= g. This why opus_encod...

The libopus encoder's opus_encode() method is documented as "Encodes an Opus frame". Does that mean that it always produces a single Opus frame (i.e. the number of frames in the TOC byte will always be 0)? It's not clear from the documentation, but the fact that it cannot produce a 120ms Opus packet makes me wonder if that was the intention and any multi-frame Opus packets must

...-----Original Message----- From: opus-bounces at xiph.org > [mailto:opus-bounces at xiph.org] On Behalf Of Jean-Marc Valin Sent: > Friday, October 25, 2013 7:19 AM To: O'Connor, Kevin; opus at xiph.org > Subject: Re: [opus] libopus API question - 120ms encoding > > The general ideao of opus_encode() is indeed to encode a single > frame. However, there is an exception for 40 and 60 ms because only > one mode (SILK-only) has this frame size. The original code would > automatically force SILK-only mode on 40 and 60 ms, but that was > suboptimal for mode switching. Thi...

...-----Original Message----- From: opus-bounces at xiph.org > [mailto:opus-bounces at xiph.org] On Behalf Of Jean-Marc Valin Sent: > Friday, October 25, 2013 7:19 AM To: O'Connor, Kevin; opus at xiph.org > Subject: Re: [opus] libopus API question - 120ms encoding > > The general ideao of opus_encode() is indeed to encode a single frame. > However, there is an exception for 40 and 60 ms because only one mode > (SILK-only) has this frame size. The original code would automatically > force SILK-only mode on 40 and 60 ms, but that was suboptimal for mode > switching....