File size: 1,408 Bytes
a17b394 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 | #!/usr/bin/env bash
# Extract audio (16kHz mono wav) from every mp4 in FairTalking-Bench.
# Output mirrors the directory structure under $DATA_ROOT/_audio/.
#
# Usage:
# export DATA_ROOT=/apdcephfs_gy4/share_303628665/joywu/dataset/FairTalking-Bench
# bash scripts/prepare_audio.sh # default 8 parallel workers
# bash scripts/prepare_audio.sh 16 # override workers
#
# Requires: ffmpeg, GNU parallel (apt-get install parallel)
set -euo pipefail
: "${DATA_ROOT:?DATA_ROOT must be set}"
WORKERS="${1:-8}"
AUDIO_DIR="$DATA_ROOT/_audio"
mkdir -p "$AUDIO_DIR"
echo "[prepare_audio] DATA_ROOT=$DATA_ROOT workers=$WORKERS"
extract_one() {
local mp4="$1"
local rel="${mp4#$DATA_ROOT/}"
local out="$AUDIO_DIR/${rel%.mp4}.wav"
mkdir -p "$(dirname "$out")"
if [ -f "$out" ]; then return 0; fi
ffmpeg -y -v error -i "$mp4" -ac 1 -ar 16000 -vn "$out" < /dev/null
}
export -f extract_one
export DATA_ROOT AUDIO_DIR
if command -v parallel >/dev/null 2>&1; then
find "$DATA_ROOT" -name "*.mp4" ! -path "$AUDIO_DIR/*" \
| parallel -j "$WORKERS" --bar extract_one {}
else
echo "[prepare_audio] GNU parallel not found, falling back to xargs -P$WORKERS"
find "$DATA_ROOT" -name "*.mp4" ! -path "$AUDIO_DIR/*" -print0 \
| xargs -0 -n1 -P"$WORKERS" -I{} bash -c 'extract_one "$@"' _ {}
fi
echo "[prepare_audio] done. audio root: $AUDIO_DIR"
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