Add a better split_on_silence (processing_pipeline)
Going to extend this a bit more going forwards to support the entire pipeline.
This commit is contained in:
parent
1d29999648
commit
687393de59
68
codes/scripts/audio/preparation/processing_pipeline.py
Normal file
68
codes/scripts/audio/preparation/processing_pipeline.py
Normal file
|
@ -0,0 +1,68 @@
|
|||
|
||||
|
||||
"""
|
||||
Master script that processes all MP3 files found in an input directory. Performs the following operations, per-file:
|
||||
1. Splits the file on silence intervals, throwing out all clips that are too short or long.
|
||||
2.
|
||||
"""
|
||||
import argparse
|
||||
import functools
|
||||
import os
|
||||
from multiprocessing.pool import ThreadPool
|
||||
|
||||
from pydub import AudioSegment
|
||||
from pydub.exceptions import CouldntDecodeError
|
||||
from pydub.silence import split_on_silence
|
||||
from tqdm import tqdm
|
||||
|
||||
from data.util import find_audio_files
|
||||
|
||||
|
||||
def report_progress(progress_file, file):
|
||||
with open(progress_file, 'a', encoding='utf-8') as f:
|
||||
f.write(f'{file}\n')
|
||||
|
||||
|
||||
def process_file(file, base_path, output_path, progress_file):
|
||||
# Hyper-parameters; feel free to adjust.
|
||||
minimum_duration = 4
|
||||
maximum_duration = 20
|
||||
|
||||
# Part 1 is to split a large file into chunks.
|
||||
try:
|
||||
speech = AudioSegment.from_file(file)
|
||||
except CouldntDecodeError as e:
|
||||
print(e)
|
||||
report_progress(progress_file, file)
|
||||
return
|
||||
outdir = os.path.join(output_path, f'{os.path.relpath(file, base_path)[:-4]}').replace('.', '').strip()
|
||||
os.makedirs(outdir, exist_ok=True)
|
||||
chunks = split_on_silence(speech, min_silence_len=600, silence_thresh=-40, seek_step=100, keep_silence=50)
|
||||
for i in range(0, len(chunks)):
|
||||
if chunks[i].duration_seconds < minimum_duration or chunks[i].duration_seconds > maximum_duration:
|
||||
continue
|
||||
chunks[i].export(f"{outdir}/{i:05d}.mp3", format='mp3', parameters=["-ac", "1"])
|
||||
report_progress(progress_file, file)
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
parser = argparse.ArgumentParser()
|
||||
parser.add_argument('-path', type=str, help='Path to search for files', default='Y:\\sources\\big_podcast')
|
||||
parser.add_argument('-progress_file', type=str, help='Place to store all files that have already been processed', default='Y:\\sources\\big_podcast\\already_processed.txt')
|
||||
parser.add_argument('-output_path', type=str, help='Path for output files', default='Y:\\split\\big_podcast')
|
||||
parser.add_argument('-num_threads', type=int, help='Number of concurrent workers processing files.', default=4)
|
||||
args = parser.parse_args()
|
||||
|
||||
processed_files = set()
|
||||
if os.path.exists(args.progress_file):
|
||||
with open(args.progress_file, 'r', encoding='utf-8') as f:
|
||||
for line in f.readlines():
|
||||
processed_files.add(line.strip())
|
||||
|
||||
files = set(find_audio_files(args.path, include_nonwav=True))
|
||||
orig_len = len(files)
|
||||
files = files - processed_files
|
||||
print(f"Found {len(files)} files to process. Total processing is {100*(orig_len-len(files))/orig_len}% complete.")
|
||||
|
||||
with ThreadPool(args.num_threads) as pool:
|
||||
list(tqdm(pool.imap(functools.partial(process_file, output_path=args.output_path, base_path=args.path, progress_file=args.progress_file), files), total=len(files)))
|
|
@ -19,8 +19,6 @@ def main():
|
|||
maximum_duration = 20
|
||||
files = find_audio_files(args.path, include_nonwav=True)
|
||||
for e, wav_file in enumerate(tqdm(files)):
|
||||
if e < 12593:
|
||||
continue
|
||||
print(f"Processing {wav_file}..")
|
||||
outdir = os.path.join(args.out, f'{e}_{os.path.basename(wav_file[:-4])}').replace('.', '').strip()
|
||||
os.makedirs(outdir, exist_ok=True)
|
||||
|
@ -36,7 +34,7 @@ def main():
|
|||
for i in range(0, len(chunks)):
|
||||
if chunks[i].duration_seconds < minimum_duration or chunks[i].duration_seconds > maximum_duration:
|
||||
continue
|
||||
chunks[i].export(f"{outdir}/{i:05d}.wav", format='wav', parameters=["-ar", "22050", "-ac", "1"])
|
||||
chunks[i].export(f"{outdir}/{i:05d}.mp3", format='mp3', parameters=["-ac", "1"])
|
||||
|
||||
if __name__ == '__main__':
|
||||
main()
|
||||
|
|
Loading…
Reference in New Issue
Block a user