import {
Codec,
CodecContext,
FormatContext,
constants,
Packet,
Frame,
getBytesPerSample,
CodecParameters,
Rational
} from 'node-ffmpeg';
const enc = Codec.findEncoder(constants.AV_CODEC_ID_OPUS);
console.log(enc);
const encCtx = new CodecContext(enc);
encCtx.parametersToContext(new CodecParameters({
codecId: constants.AV_CODEC_ID_OPUS,
channels: 1,
channelLayout: constants.AV_CH_LAYOUT_MONO,
sampleRate: 48000,
bitRate: 20000,
codecType: constants.AVMEDIA_TYPE_AUDIO,
format: sampleFormat
}));
encCtx.open(enc);
console.log(encCtx.frameSize() === 960)