How do I encode custom opus stream?

[vinnitu]

Hello!

I want to get opus packet (60ms, 16000, mono) stream from any url source, trying to do something like this

import av

SAMPLE_RATE = 16000
CHUNK_DURATION = 0.06
CHUNK_SIZE = int(CHUNK_DURATION * SAMPLE_RATE)

resampler = av.AudioResampler('s16', 'mono', SAMPLE_RATE)

container = av.open('file.avi')
stream = container.streams.audio[0]
audio_buffer = []

for packet in container.demux(stream):
    for frame in packet.decode():
         for f in resampler.resample(frame):

here I want accumulate samples in audio_buffer, but don't understand how to do it properly

first version is to use f.to_ndarray()
second version is use bytes()

 for p in f.planes:
     audio_buffer.extend(bytes(p))

maybe you can help me to choose?

In result I want get AudioFrame('s16', 'mono', SAMPLE_RATE) with duration 60ms

and make encode to opus format

I am planning do it with something like

audio_encoder = av.AudioEncoder('opus')

and I need this encoded data without container and in bytes format

Can you get me direction?

thanks!

[vinnitu]

Ok, I am able to do half of work ))

The question is how to encode frame to opus codec and get result bytes?