Your Question

I have a valid ogg audio file (works in several players including opus-tools opusdec; ffmpeg correctly identifies the file and reports no problems). The audio stream has two channels, a sample rate of 48kHz, and a 20ms frame duration.

You can recreate a very similar file using ffmpeg

Here it is:

4F 70 75 73 48 65 61 64 01 02 38 01 80 BB 00 00 00 00 00

FRAMES_PER_SECOND = 1000 // FRAME_DURATION

SAMPLES_PER_FRAME = SAMPLE_RATE // FRAMES_PER_SECOND

result = decoder.decode(packet, SAMPLES_PER_CHANNEL_FRAME)

print(result)

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

File "C:\...\site-packages\opuslib\classes.py", line 56, in decode

opuslib.exceptions.OpusError: b'corrupted stream'

I have tried multiple variations of the CONSTANT calculations.

Assignment Help Answer with Step by Step Explanation

The Opus codec, especially when used within the Ogg container format, requires a bit more handling due to its framing and encapsulation mechanisms. The issue you're facing might be related to incorrect frame handling or incorrect decoding of the Opus packet.

When dealing with an Ogg-encapsulated Opus stream, the individual packets need to be extracted correctly before passing them to the Opus decoder. Simply extracting the first packet from the Ogg container might not be sufficient for decoding.

Instead of directly passing the extracted bytes to the Opus decoder, you need to identify and extract Opus packets from the Ogg stream.

Handling Opus Frames:

import pyogg

import opuslib

# Check if the page contains an Opus stream

if page.opus:

# Decode each Opus packet

for packet in packets: