change opus enc
This commit is contained in:
@ -1,21 +1,35 @@
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#!/bin/bash
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# Media Library FLAC to Opus Conversion Script
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# Processes multiple albums in a media library, converting all FLAC files to Opus 448kbps
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# Uses opus-tools (opusenc) for high-quality FLAC to Opus conversion
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# Also copies cover art files to maintain album artwork
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# Check if ffmpeg is installed
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if ! command -v ffmpeg &> /dev/null; then
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echo "Error: ffmpeg is not installed or not in PATH"
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exit 1
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fi
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# Check if ffmpeg has opus encoder support
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if ! ffmpeg -encoders 2>/dev/null | grep -q "libopus"; then
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echo "Error: ffmpeg does not have Opus encoder support (libopus)"
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echo "Please install ffmpeg with Opus support"
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exit 1
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fi
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# Check if required tools are installed
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check_dependencies() {
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local missing_tools=()
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if ! command -v opusenc &> /dev/null; then
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missing_tools+=("opusenc (from opus-tools package)")
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fi
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if ! command -v flac &> /dev/null; then
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missing_tools+=("flac (for metadata extraction)")
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fi
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if [ ${#missing_tools[@]} -gt 0 ]; then
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echo "Error: Missing required tools:"
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for tool in "${missing_tools[@]}"; do
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echo " - $tool"
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done
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echo ""
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echo "To install missing dependencies:"
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echo " Ubuntu/Debian: sudo apt install opus-tools flac"
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echo " macOS: brew install opus-tools flac"
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echo " Arch Linux: sudo pacman -S opus-tools flac"
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echo " Fedora: sudo dnf install opus-tools flac"
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exit 1
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fi
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}
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# Function to display usage
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show_usage() {
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@ -27,8 +41,10 @@ show_usage() {
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echo " -p, --preserve Create Opus files alongside original FLAC files"
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echo " -t, --test Test mode - show what would be processed"
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echo " -f, --force Force re-conversion of existing Opus files"
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echo " -b, --bitrate RATE Opus bitrate in kbps (default: 448)"
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echo " -b, --bitrate RATE Opus bitrate in kbps (default: 192)"
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echo " -q, --quality LEVEL Use VBR quality instead of bitrate (0-10, 10=best)"
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echo " --no-covers Skip copying cover art files"
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echo " --no-metadata Skip copying metadata from FLAC files"
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echo " -h, --help Show this help message"
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echo ""
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echo "Examples:"
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@ -36,7 +52,8 @@ show_usage() {
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echo " $0 -o /path/to/output /path/to/music/library"
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echo " $0 --test /path/to/music/library"
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echo " $0 --replace /path/to/music/library"
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echo " $0 -b 384 /path/to/music/library"
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echo " $0 -b 256 /path/to/music/library"
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echo " $0 -q 8 /path/to/music/library # VBR quality 8 (very good) with .opus.ogg extension"
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echo " $0 --no-covers /path/to/music/library"
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}
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@ -47,7 +64,10 @@ PRESERVE_MODE=false
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TEST_MODE=false
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FORCE_MODE=false
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COPY_COVERS=true
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COPY_METADATA=true
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OPUS_BITRATE=192
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OPUS_QUALITY=""
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USE_VBR_QUALITY=false
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PROCESSED_COUNT=0
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SKIPPED_COUNT=0
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ERROR_COUNT=0
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@ -87,12 +107,22 @@ while [[ $# -gt 0 ]]; do
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;;
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-b|--bitrate)
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OPUS_BITRATE="$2"
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USE_VBR_QUALITY=false
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shift 2
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;;
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-q|--quality)
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OPUS_QUALITY="$2"
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USE_VBR_QUALITY=true
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shift 2
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;;
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--no-covers)
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COPY_COVERS=false
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shift
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;;
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--no-metadata)
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COPY_METADATA=false
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shift
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;;
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-h|--help)
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show_usage
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exit 0
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@ -109,10 +139,22 @@ while [[ $# -gt 0 ]]; do
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esac
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done
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# Validate bitrate
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if ! [[ "$OPUS_BITRATE" =~ ^[0-9]+$ ]] || [ "$OPUS_BITRATE" -lt 64 ] || [ "$OPUS_BITRATE" -gt 512 ]; then
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echo "Error: Invalid bitrate '$OPUS_BITRATE'. Must be between 64 and 512 kbps"
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exit 1
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# Check dependencies
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check_dependencies
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# Validate quality or bitrate settings
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if [ "$USE_VBR_QUALITY" = true ]; then
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if ! [[ "$OPUS_QUALITY" =~ ^[0-9]+$ ]] || [ "$OPUS_QUALITY" -lt 0 ] || [ "$OPUS_QUALITY" -gt 10 ]; then
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echo "Error: Invalid quality level '$OPUS_QUALITY'. Must be between 0 and 10"
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echo "Quality levels: 0 (lowest), 5 (good), 8 (very good), 10 (best)"
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exit 1
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fi
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else
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if ! [[ "$OPUS_BITRATE" =~ ^[0-9]+$ ]] || [ "$OPUS_BITRATE" -lt 6 ] || [ "$OPUS_BITRATE" -gt 510 ]; then
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echo "Error: Invalid bitrate '$OPUS_BITRATE'. Must be between 6 and 510 kbps"
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echo "Recommended values: 96 (good), 128 (very good), 192 (excellent), 256 (overkill)"
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exit 1
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fi
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fi
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# Check if media library path is provided
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@ -157,6 +199,77 @@ needs_conversion() {
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return 0 # Needs conversion
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}
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# Function to extract embedded cover art from FLAC file
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extract_flac_cover_art() {
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local flac_file="$1"
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local temp_cover_file="$2"
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if [ "$COPY_COVERS" = false ]; then
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return 1
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fi
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# Try to extract embedded cover art using metaflac
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if command -v metaflac &> /dev/null; then
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# Check if the FLAC file has embedded pictures
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if metaflac --list --block-type=PICTURE "$flac_file" 2>/dev/null | grep -q "PICTURE"; then
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# Extract the first picture (cover art)
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if metaflac --export-picture-to="$temp_cover_file" "$flac_file" 2>/dev/null; then
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return 0
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fi
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fi
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fi
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# Fallback: try ffmpeg to extract embedded art
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if command -v ffmpeg &> /dev/null; then
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if ffmpeg -hide_banner -y -i "$flac_file" -an -vcodec copy "$temp_cover_file" 2>/dev/null; then
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# Check if the extracted file has content
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if [ -s "$temp_cover_file" ]; then
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return 0
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fi
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fi
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fi
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return 1
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}
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# Function to extract metadata from FLAC file
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extract_flac_metadata() {
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local flac_file="$1"
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local temp_tags_file="$2"
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if [ "$COPY_METADATA" = false ]; then
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return
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fi
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# Extract metadata using metaflac (preferred method)
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if command -v metaflac &> /dev/null; then
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metaflac --export-tags-to="$temp_tags_file" "$flac_file" 2>/dev/null
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# If metaflac succeeded and file has content, we're done
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if [ -s "$temp_tags_file" ]; then
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return
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fi
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fi
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# Fallback: use ffprobe if available (often more comprehensive)
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if command -v ffprobe &> /dev/null; then
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ffprobe -v quiet -show_entries format_tags -of csv=p=0:s=x "$flac_file" 2>/dev/null | \
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sed 's/^tag://; s/x/\n/g' | grep '=' > "$temp_tags_file"
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# If ffprobe succeeded and file has content, we're done
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if [ -s "$temp_tags_file" ]; then
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return
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fi
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fi
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# Last fallback: use flac command to list tags
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if command -v flac &> /dev/null; then
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flac --list --block-type=VORBIS_COMMENT "$flac_file" 2>/dev/null | \
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grep -E "^\s+comment\[[0-9]+\]:" | \
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sed 's/^\s*comment\[[0-9]*\]: //' > "$temp_tags_file"
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fi
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}
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# Function to copy cover art files
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copy_cover_art() {
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local source_dir="$1"
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@ -214,17 +327,17 @@ process_flac_file() {
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local relative_path="$2"
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local output_file=""
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# Determine output file path
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# Determine output file path with .opus.ogg extension
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if [ "$REPLACE_MODE" = true ]; then
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# Replace .flac with .ogg in same location
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output_file="${input_file%.flac}.ogg"
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# Replace .flac with .opus.ogg in same location
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output_file="${input_file%.flac}.opus.ogg"
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elif [ "$PRESERVE_MODE" = true ]; then
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local dir=$(dirname "$input_file")
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local filename=$(basename "$input_file" .flac)
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output_file="$dir/${filename}.ogg"
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output_file="$dir/${filename}.opus.ogg"
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else
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# Change extension from .flac to .ogg
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local opus_relative_path="${relative_path%.flac}.ogg"
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# Change extension from .flac to .opus.ogg
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local opus_relative_path="${relative_path%.flac}.opus.ogg"
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output_file="$OUTPUT_DIR/$opus_relative_path"
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fi
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@ -236,7 +349,11 @@ process_flac_file() {
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fi
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if [ "$TEST_MODE" = true ]; then
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if [ "$USE_VBR_QUALITY" = true ]; then
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echo " WOULD CONVERT: $relative_path → $(basename "$output_file") @ VBR quality ${OPUS_QUALITY}"
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else
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echo " WOULD CONVERT: $relative_path → $(basename "$output_file") @ ${OPUS_BITRATE}kbps"
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fi
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return
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fi
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@ -264,34 +381,95 @@ process_flac_file() {
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return
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fi
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# Create temporary file for safe processing
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local temp_file="${output_file}.tmp.ogg"
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# Create temporary files
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local temp_file="${output_file}.tmp"
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local temp_cover_file="${output_file}.cover.tmp"
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echo " CONVERTING: $relative_path → Opus ${OPUS_BITRATE}kbps"
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# Extract embedded cover art from FLAC file
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local has_embedded_cover=false
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if extract_flac_cover_art "$input_file" "$temp_cover_file"; then
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has_embedded_cover=true
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echo " Found embedded cover art"
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fi
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# Convert the file to Opus
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echo " Command: ffmpeg -i \"$input_file\" -c:a libopus -b:a ${OPUS_BITRATE}k -vbr on -compression_level 10 -y \"$temp_file\""
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# Look for external cover art if no embedded cover found
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local external_cover_file=""
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if [ "$has_embedded_cover" = false ]; then
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local source_dir=$(dirname "$input_file")
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for cover_name in "${COVER_FILENAMES[@]}"; do
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local cover_file="$source_dir/$cover_name"
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if [ -f "$cover_file" ]; then
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external_cover_file="$cover_file"
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echo " Found external cover art: $cover_name"
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break
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fi
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done
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fi
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if ffmpeg -i "$input_file" -c:a libopus -b:a "${OPUS_BITRATE}k" -vbr on -compression_level 10 -y "$temp_file" 2>"${temp_file}.log"; then
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# Move temp file to final location
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mv "$temp_file" "$output_file"
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echo " ✓ DONE: $(basename "$output_file")"
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rm -f "${temp_file}.log"
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((PROCESSED_COUNT++))
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# If replace mode, remove original FLAC file
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if [ "$REPLACE_MODE" = true ]; then
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rm "$input_file"
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echo " Removed original: $(basename "$input_file")"
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# Build opusenc command
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local opusenc_cmd=(opusenc)
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# Add quality or bitrate settings
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if [ "$USE_VBR_QUALITY" = true ]; then
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opusenc_cmd+=(--vbr --comp "$OPUS_QUALITY")
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echo " CONVERTING: $relative_path → Opus VBR quality ${OPUS_QUALITY}"
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else
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opusenc_cmd+=(--bitrate "$OPUS_BITRATE")
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echo " CONVERTING: $relative_path → Opus ${OPUS_BITRATE}kbps"
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fi
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# Add embedded cover art if available
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if [ "$has_embedded_cover" = true ] && [ -f "$temp_cover_file" ]; then
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opusenc_cmd+=(--picture "$temp_cover_file")
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echo " Embedding cover art from FLAC"
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elif [ -n "$external_cover_file" ]; then
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opusenc_cmd+=(--picture "$external_cover_file")
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echo " Embedding external cover art"
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fi
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# Note: opusenc automatically copies metadata from FLAC files
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# Only add manual metadata if we need to override or add specific tags
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if [ "$COPY_METADATA" = true ]; then
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echo " Metadata: opusenc will automatically copy FLAC tags"
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else
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# If metadata copying is disabled, use --discard-comments
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opusenc_cmd+=(--discard-comments)
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echo " Metadata: Disabled (using --discard-comments)"
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fi
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# Add input and output files
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opusenc_cmd+=("$input_file" "$temp_file")
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echo " Command: ${opusenc_cmd[*]}"
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# Run opusenc with error logging
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if "${opusenc_cmd[@]}" 2>"${temp_file}.log"; then
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# Verify the output file was created and has content
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if [ -s "$temp_file" ]; then
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# Move temp file to final location
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mv "$temp_file" "$output_file"
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echo " ✓ DONE: $(basename "$output_file")"
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rm -f "${temp_file}.log" "$temp_cover_file"
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((PROCESSED_COUNT++))
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# If replace mode, remove original FLAC file
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if [ "$REPLACE_MODE" = true ]; then
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rm "$input_file"
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echo " Removed original: $(basename "$input_file")"
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fi
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else
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echo " ✗ ERROR: Output file is empty or wasn't created properly"
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rm -f "$temp_file" "$temp_cover_file"
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((ERROR_COUNT++))
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fi
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else
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echo " ✗ ERROR: Failed to convert $relative_path"
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echo " Error log saved to: ${temp_file}.log"
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if [ -f "${temp_file}.log" ]; then
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echo " Last few lines of error:"
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tail -n 5 "${temp_file}.log" | sed 's/^/ /'
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echo " Error details:"
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tail -n 5 "${temp_file}.log" | sed 's/^/ /'
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fi
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rm -f "$temp_file"
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rm -f "$temp_file" "$temp_cover_file"
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((ERROR_COUNT++))
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fi
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}
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@ -330,11 +508,22 @@ process_album() {
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echo ""
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}
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# Test opusenc with version info
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echo "Testing opus-tools..."
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opusenc_version=$(opusenc --version 2>&1 | head -n1)
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echo "Found: $opusenc_version"
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# Main processing
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echo "Media Library FLAC to Opus Converter"
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echo "===================================="
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echo ""
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echo "Media Library FLAC to Opus Converter (using opus-tools)"
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echo "======================================================="
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echo "Input: $MEDIA_LIBRARY"
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echo "Bitrate: ${OPUS_BITRATE}kbps"
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if [ "$USE_VBR_QUALITY" = true ]; then
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echo "Quality: VBR level ${OPUS_QUALITY} (0=lowest, 10=best)"
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else
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echo "Bitrate: ${OPUS_BITRATE}kbps CBR"
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fi
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if [ "$TEST_MODE" = true ]; then
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echo "Mode: TEST MODE (no files will be modified)"
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@ -351,11 +540,17 @@ if [ "$FORCE_MODE" = true ]; then
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fi
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if [ "$COPY_COVERS" = true ]; then
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echo "Covers: Enabled (will copy album artwork)"
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echo "Covers: Enabled (will embed cover art in Opus files and copy external files)"
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else
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echo "Covers: Disabled"
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fi
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if [ "$COPY_METADATA" = true ]; then
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echo "Metadata: Enabled (will copy tags from FLAC files)"
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else
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echo "Metadata: Disabled"
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fi
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echo ""
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# Find all directories that contain FLAC files (potential albums)
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@ -392,5 +587,7 @@ if [ "$COPY_COVERS" = true ]; then
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fi
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if [ "$ERROR_COUNT" -gt 0 ]; then
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echo ""
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echo "Some files failed to convert. Check the error logs for details."
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exit 1
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fi
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