encoder: invalid argument about opus

[hraban]

The error comes from the encode step, which is encoding uninitialised PCM data. Do you have pcm float data somewhere to encode? If you can't find any; have a look at stream_test.go and testdata/speech_8.wav for how to get PCM data from a .wav file. Another way to generate raw PCM data is shown in utils_test.go; the addSine function will add a sine wave to a set of PCM samples.

Note: PCM data = raw audio samples. Audio is a sequence of air pressure measurements, at very high frequency. You can plot the PCM data in Excel to see the waveform, e.g. #18 (comment) . Opus is a library to turn that waveform into a dense series of bytes, so when you decode it, you get more or less the original waveform back. Have a look at the test files for examples of use, and what kind of data you can pass in.

I'm closing this issue since it's not a bug in the opus wrapper code, but a support ticket. Feel free to ask more questions after you've looked at the test files and we'll see if we can sort this out :)