fix copy tag in reduce-bitrate by id3lib app

copy_id3_tags.py

@@ -1,46 +0,0 @@
-#!/usr/bin/env python3
-"""
-Copy all ID3 tags from source file to target file, preserving multi-value fields.
-Requires: python-mutagen
-"""
-
-import sys
-from mutagen.id3 import ID3, ID3NoHeaderError
-
-def copy_id3_tags(source_path, target_path):
-    """Copy all ID3 tags from source to target file."""
-    try:
-        # Load source tags
-        source_tags = ID3(source_path)
-
-        # Load or create target tags
-        try:
-            target_tags = ID3(target_path)
-        except ID3NoHeaderError:
-            target_tags = ID3()
-
-        # Clear all existing tags in target
-        target_tags.clear()
-
-        # Copy all frames from source to target
-        for key, value in source_tags.items():
-            target_tags[key] = value
-
-        # Save to target file
-        target_tags.save(target_path, v2_version=3)
-
-        return 0
-
-    except Exception as e:
-        print(f"Error copying tags: {e}", file=sys.stderr)
-        return 1
-
-if __name__ == "__main__":
-    if len(sys.argv) != 3:
-        print("Usage: copy_id3_tags.py <source_file> <target_file>", file=sys.stderr)
-        sys.exit(1)
-
-    source = sys.argv[1]
-    target = sys.argv[2]
-
-    sys.exit(copy_id3_tags(source, target))

reduce_bitrate.sh

@@ -55,11 +55,8 @@ get_bitrate_kbps() {
 restore_metadata() {
     local source_file="$1"
     local target_file="$2"
-    local script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-
-    # Use Python script with mutagen to properly copy all ID3 tags including multi-value fields
-    "$script_dir/copy_id3_tags.py" "$source_file" "$target_file" 2>/dev/null
 
+    id3cp "$source_file" "$target_file" >/dev/null 2>&1
     return $?
 }
 
@@ -138,8 +135,8 @@ if ! command -v ffprobe >/dev/null 2>&1 || ! command -v ffmpeg >/dev/null 2>&1;
     exit 1
 fi
 
-if ! python3 -c "import mutagen" 2>/dev/null; then
-    log_error "Python mutagen library not found. Please install python-mutagen (Arch) or python3-mutagen (Debian/Ubuntu)."
+if ! command -v id3cp >/dev/null 2>&1; then
+    log_error "id3cp not found. Please install id3lib (Arch: id3lib, Debian/Ubuntu: libid3-tools)."
     exit 1
 fi