加入鹿鼎記音頻

convert_to_opus.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+
+# This script converts all MP3 or M4A files in a specified source directory to the Opus format,
+# leveraging parallel processing to speed up the conversion.
+# Example usage: 
+# convert_to_opus.sh source/trimmed_mp3 source/trimmed_opus 8
+
+# Set the source and destination directories from the command-line arguments.
+# If no arguments are provided, use default values.
+SOURCE_DIR=${1:-source/mp3}
+DEST_DIR=${2:-opus_converted}
+NUM_JOBS=${3:-$(nproc 2>/dev/null || sysctl -n hw.ncpu)}
+
+# Create the output directory. The -p flag ensures that the command doesn't fail if the directory already exists.
+mkdir -p "$DEST_DIR"
+
+export DEST_DIR
+
+# Define the conversion function to be run in parallel.
+convert_to_opus() {
+  f="$1"
+  # Get the base name of the file (e.g., "001.mp3")
+  filename=$(basename -- "$f")
+  # Get the file name without the extension (e.g., "001")
+  filename_noext="${filename%.*}"
+
+  # Use ffmpeg to convert the file to Opus format.
+  # The output is redirected to /dev/null to prevent ffmpeg from flooding the console.
+  echo "Converting $f to $DEST_DIR/${filename_noext}.opus"
+  ffmpeg -i "$f" -fflags +genpts -c:a libopus -ar 48000 -vbr on -map_metadata -1 -y "$DEST_DIR/${filename_noext}.opus" >/dev/null 2>&1
+}
+
+export -f convert_to_opus
+
+# Find all .mp3 and .m4a files in the source directory and process them in parallel using a while loop.
+find "$SOURCE_DIR" -type f \( -name "*.mp3" -o -name "*.m4a" \) -print0 | while IFS= read -r -d $'\0' file; do
+    ((i=i%NUM_JOBS)); ((i++==0)) && wait
+    convert_to_opus "$file" &
+done
+wait
+
+echo "All files have been converted to Opus format and are located in the $DEST_DIR directory."

cut.py

@@ -83,7 +83,7 @@ if __name__ == "__main__":
     # If append to existing metadata file
     metadata_file = os.path.join("opus", SUBSET, "metadata.csv")  # Define metadata file path here
 
-    for episode in range(20, 21):
+    for episode in range(1, 232):
         # If creating new csv
         # metadata_file = f"{episode}.csv"
         episode_str = f'{episode:03d}'  # Format episode as 3-digit string

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