Audio processing error: filenotfounderror: [errno 2] no such file or directory: ‘ffmpeg’: ‘ffmpeg’

An error occurs when the following code is executed

import audiosegment

print("Reading in the wave file...")
seg = audiosegment.from_file("voice_data/out_11.wav")

print("Information:")
print("Channels:", seg.channels)
print("Bits per sample:", seg.sample_width * 8)
print("Sampling frequency:", seg.frame_rate)
print("Length:", seg.duration_seconds, "seconds")

print("Detecting voice...")
seg = seg.resample(sample_rate_Hz=32000, sample_width=2, channels=1)
results = seg.detect_voice()
voiced = [tup[1] for tup in results if tup[0] == 'v']
unvoiced = [tup[1] for tup in results if tup[0] == 'u']

print("Reducing voiced segments to a single wav file 'voiced.wav'")
voiced_segment = voiced[0].reduce(voiced[1:])
voiced_segment.export("voiced.wav", format="WAV")

print("Reducing unvoiced segments to a single wav file 'unvoiced.wav'")
unvoiced_segment = unvoiced[0].reduce(unvoiced[1:])
unvoiced_segment.export("unvoiced.wav", format="WAV")

Error content

Solution:
use the command: brew install ffmpeg installation. If the following problems occur, let’s continue brew install ffmpeg installation without turning off the error message.

==> Downloading from https://pkg-containers.githubusercontent.com/ghcr1/blobs/sha256:c16266957db69346464e39967d41d5198f3550423d6
############################                                              40.0%
curl: (92) HTTP/2 stream 0 was not closed cleanly: PROTOCOL_ERROR (err 1)
Error: ffmpeg: Failed to download resource "rav1e"
Download failed: https://ghcr.io/v2/homebrew/core/rav1e/blobs/sha256:c16266957db69346464e39967d41d5198f3550423d6aabfb62919975cf52ea19

After that, new error messages are found as follows:

Error: The `brew link` step did not complete successfully
The formula built, but is not symlinked into /usr/local
Could not symlink bin/2to3
Target /usr/local/bin/2to3
already exists. You may want to remove it:
  rm '/usr/local/bin/2to3'

To force the link and overwrite all conflicting files:
  brew link --overwrite [email protected]

To list all files that would be deleted:
  brew link --overwrite --dry-run [email protected]

Follow the prompts and execute the following statements:

 rm '/usr/local/bin/2to3'
 brew link --overwrite [email protected]
 brew link --overwrite --dry-run [email protected]