scripts/materialize_manifest.py

"""Join the published alignments to a local audio root and write the jsonl
that pocket-tts training consumes (absolute paths under `path`).

    python materialize_manifest.py train/ /data/hifitts2/audio train_aligned.jsonl
"""
import glob
import gzip
import json
import os
import sys

src, audio_root, out = sys.argv[1:4]
files = sorted(glob.glob(os.path.join(src, "*.jsonl.gz"))) if os.path.isdir(src) else [src]
n = missing = 0
with open(out, "w") as w:
    for f in files:
        for line in gzip.open(f, "rt"):
            d = json.loads(line)
            p = os.path.join(audio_root, d.pop("audio_filepath"))
            if not os.path.exists(p):
                missing += 1
                continue
            w.write(json.dumps({"path": p, **d}) + "\n")
            n += 1
print(f"wrote {n} rows to {out} ({missing} rows skipped: audio not on disk)")