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<div>Hello, </div>
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<div>I am testing the command line based opus encoder/decoder tools and I have some questions regarding the information given by the encoder (see below as an example).</div>
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<div style="padding-left: 36pt; "><font face="Calibri, sans-serif" size="2"> </font></div>
<div style="padding-left: 36pt; "><font face="Courier New, monospace" size="1">Encoding using libopus 1.0.2 (audio)</font></div>
<div style="padding-left: 36pt; "><font face="Courier New, monospace" size="1">-----------------------------------------------------</font></div>
<div style="padding-left: 36pt; "><font face="Courier New, monospace" size="1"> Input: 48kHz 1 channel</font></div>
<div style="padding-left: 36pt; "><font face="Courier New, monospace" size="1"> Output: 1 channel (1 uncoupled)</font></div>
<div style="padding-left: 36pt; "><font face="Courier New, monospace" size="1"> 20ms packets, 64kbit/sec VBR</font></div>
<div style="padding-left: 36pt; "><font face="Courier New, monospace" size="1"> Preskip: 312</font></div>
<div style="padding-left: 36pt; "><font face="Courier New, monospace" size="1"> </font></div>
<div style="padding-left: 36pt; "><font face="Courier New, monospace" size="1">Encoding complete</font></div>
<div style="padding-left: 36pt; "><font face="Courier New, monospace" size="1">-----------------------------------------------------</font></div>
<div style="padding-left: 36pt; "><font face="Courier New, monospace" size="1"> Encoded: 6.86 seconds</font></div>
<div style="padding-left: 36pt; "><font face="Courier New, monospace" size="1"> Runtime: 1e-06 seconds</font></div>
<div style="padding-left: 36pt; "><font face="Courier New, monospace" size="1"> (6.86e+06x realtime)</font></div>
<div style="padding-left: 36pt; "><font face="Courier New, monospace" size="1"> Wrote: 57354 bytes, 343 packets, 9 pages</font></div>
<div style="padding-left: 36pt; "><font face="Courier New, monospace" size="1"> Bitrate: 66.0921kbit/s (without overhead)</font></div>
<div style="padding-left: 36pt; "><font face="Courier New, monospace" size="1"> Rate range: 48.8kbit/s to 110.4kbit/s</font></div>
<div style="padding-left: 36pt; "><font face="Courier New, monospace" size="1"> (122 to 276 bytes per packet)</font></div>
<div><font face="Courier New, monospace" size="1"> Overhead: 1.19% (container+metadata)</font></div>
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<div style="margin-top: 5pt; margin-bottom: 5pt; ">More specifically, I am interesting in knowing how should I interpret the Runtime information ‘6.86e+06x realtime’, the Bitrate detail ‘without overhead’ and the Overhead figure 1.19%. </div>
<div style="margin-top: 5pt; margin-bottom: 5pt; ">I have also a question regarding the delay introduced by OPUS: is the delay from encoder to decoder equal to the audio packet size (in this case, 20ms)? And, what is the minimum encoder-decoder delay that can
be achieved with OPUS?</div>
<div style="margin-top: 5pt; margin-bottom: 5pt; ">Thanks in advance. </div>
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<div style="margin-top: 5pt; margin-bottom: 5pt; ">Met vriendelijke groeten | Best Regards,<font face="Times New Roman, serif" size="3">
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</font><b>Christian van Bijleveld<br>
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