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|
#!/usr/bin/env bash
set -Eeuo pipefail
DELETE_ORIGINALS=false
MEDIA_EXTS=("mp4" "mkv" "mov" "avi" "webm" "m4v")
SEARCH_DIR="."
STYLE="FontName=Arial,FontSize=18,PrimaryColour=&HFFFFFF&,BackColour=&H000000&,BorderStyle=3,Outline=1,Shadow=0,MarginV=10,Alignment=2"
usage() {
cat <<EOF
Usage:
$(basename "$0") [DIRECTORY] [options]
Burn subtitles into every supported media file that has a matching
.srt or .vtt file with the same basename.
Examples:
$(basename "$0")
$(basename "$0") ~/Videos
$(basename "$0") /mnt/media --delete-originals
$(basename "$0") ~/Videos --style "FontName=Roboto,FontSize=30"
Options:
--delete-originals
Delete original media and subtitle after successful conversion.
--style "ASS_STYLE"
Subtitle styling passed to FFmpeg's force_style.
--ext "mp4 mkv mov"
Space-separated list of media extensions.
-h, --help
Show this help.
EOF
}
while [[ $# -gt 0 ]]; do
case "$1" in
--delete-originals)
DELETE_ORIGINALS=true
shift
;;
--style)
STYLE="$2"
shift 2
;;
--ext)
read -ra MEDIA_EXTS <<< "$2"
shift 2
;;
-h|--help)
usage
exit 0
;;
-*)
echo "Unknown option: $1"
exit 1
;;
*)
if [[ "$SEARCH_DIR" != "." ]]; then
echo "Only one directory may be specified."
exit 1
fi
SEARCH_DIR="$1"
shift
;;
esac
done
if [[ ! -d "$SEARCH_DIR" ]]; then
echo "Directory does not exist: $SEARCH_DIR"
exit 1
fi
command -v ffmpeg >/dev/null || {
echo "ffmpeg not found."
exit 1
}
escape_path() {
printf "%s" "$1" | sed "s/'/'\\\\''/g"
}
for ext in "${MEDIA_EXTS[@]}"; do
while IFS= read -r -d '' media; do
dir=$(dirname "$media")
filename=$(basename "$media")
base="${filename%.*}"
extension="${filename##*.}"
subtitle=""
shopt -s nullglob nocaseglob
for candidate in \
"$dir/$base.srt" \
"$dir/$base.vtt" \
"$dir/$base".*.srt \
"$dir/$base".*.vtt; do
[[ -e "$candidate" ]] || continue
subtitle="$candidate"
break
done
shopt -u nullglob nocaseglob
[[ -n "$subtitle" ]] || continue
output="$dir/${base}_subbed.${extension}"
echo
echo "=================================="
echo "Media: $media"
echo "Subtitle: $subtitle"
echo "Output: $output"
echo "=================================="
escaped_sub=$(escape_path "$subtitle")
ffmpeg \
-hide_banner \
-y \
-i "$media" \
-vf "subtitles='${escaped_sub}':force_style='${STYLE}'" \
-c:v libx264 \
-preset medium \
-crf 18 \
-c:a copy \
"$output"
if [[ $? -eq 0 ]]; then
echo "✓ Finished"
if $DELETE_ORIGINALS; then
rm -f "$media" "$subtitle"
echo "Deleted originals."
fi
else
echo "✗ Failed: $media"
fi
done < <(find "$SEARCH_DIR" -type f -iname "*.${ext}" -print0)
done
echo
echo "Done."
|
