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Normalize media files.
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| #!/bin/bash | |
| declare SRC="" | |
| declare DST="" | |
| declare -i USE_TIME=0 | |
| declare -r WIDTH=1280 | |
| declare -r HEIGHT=720 | |
| declare -r RATE="60000/1001" | |
| declare -r EXT=".mov" | |
| function print_help() | |
| { | |
| cat <<EOM | |
| ------------------------------------------------------------------------------- | |
| Usage: $(basename $0) [-t] input output | |
| -h Print [h]elp and exit. | |
| -t Rename output files with modification [t]ime | |
| Input and output may be specified as either a file or directory. | |
| * If input is a file, it will be normalized to the output file. | |
| * If input is a directory, all files inside the directory will be | |
| normalized and stored in the output directory. | |
| In all cases, an appropriate file extension is added. | |
| ------------------------------------------------------------------------------- | |
| EOM | |
| } | |
| function parse_args() | |
| { | |
| while getopts "hi:o:t" opt | |
| do | |
| case $opt in | |
| h) print_help; exit 0;; | |
| i) echo $opt; SRC=$OPTARG;; | |
| o) echo $opt; DST=$OPTARG;; | |
| t) USE_TIME=1;; | |
| *) echo "unknown arg: $opt"; print_help; exit 1;; | |
| esac | |
| done | |
| shift $(($OPTIND - 1)) | |
| SRC=$1 | |
| DST=$2 | |
| } | |
| function get_destination_filename() | |
| { | |
| local srcname=$1 | |
| local dstname="" | |
| if [ $USE_TIME -eq 1 ]; then | |
| dstname=`date -r "$srcname" "+%Y-%m-%d-%H%M%S"` | |
| else | |
| # Clean the name of spaces and strage characters | |
| dstname=`echo $srcname | tr ' ' '_' | tr -d '[{}(),\!]' | tr -d "\'" | tr '[A-Z]' '[a-z]' | sed 's/_-_/_/g'` | |
| # Strip the extension | |
| dstname=${dstname%.*} | |
| dstname=${dstname##*/} | |
| fi | |
| echo $dstname$EXT | |
| } | |
| function normalize_file() | |
| { | |
| local src_file="$1" | |
| local dst_file="$2" | |
| local vf="" | |
| local filters="" | |
| # Get information about the video | |
| vidinfo=`ffmpeg -i "$src_file" -vframes 1 -vf "showinfo" -an -f rawvideo -y /dev/null 2>&1 | grep --max-count=1 showinfo` | |
| structure=`echo "$vidinfo" | sed "s/.* i:\([A-Z]*\).*/\1/" | tr -d "[:space:]"` | |
| iw=`echo "$vidinfo" | sed "s/.* s:\([1-9][0-9]*\)x\([0-9]*\).*/\1/" | tr -d "[:space:]"` | |
| ih=`echo "$vidinfo" | sed "s/.* s:\([1-9][0-9]*\)x\([0-9]*\).*/\2/" | tr -d "[:space:]"` | |
| # Deinterlace if necessary | |
| if [ "$structure" != "P" ]; then | |
| echo "Source is Interlaced" | |
| if [ "$filters" != "" ]; then | |
| filters=$filters"," | |
| fi | |
| # Duplicate frames | |
| filters=$filters"yadif=1:-1:0" | |
| else | |
| echo "Source is Progressive" | |
| fi | |
| # Scale if necessary | |
| if [ "$iw" != $WIDTH -o "$ih" != $HEIGHT ]; then | |
| echo "Scale $iw x $ih -> $WIDTH x $HEIGHT" | |
| if [ "$filters" != "" ]; then | |
| filters=$filters"," | |
| fi | |
| filters=$filters"scale=(iw*sar)*min($WIDTH/(iw*sar)\,$HEIGHT/ih):ih*min($WIDTH/(iw*sar)\,$HEIGHT/ih)" | |
| filters=$filters"," | |
| # Add bars if AR does not match. Has no effect when they do match. | |
| filters=$filters"pad=$WIDTH:$HEIGHT:($WIDTH-iw*min($WIDTH/iw\,$HEIGHT/ih))/2:($HEIGHT-ih*min($WIDTH/iw\,$HEIGHT/ih))/2" | |
| fi | |
| if [ "$filters" ]; then | |
| filters='-vf "'"$filters"'"' | |
| fi | |
| cmd="ionice -c3 nice -19 ffmpeg -i \"$src_file\" -sn $filters -r $RATE -vcodec dnxhd -vb 220000k -pix_fmt yuv422p -threads 3 -acodec pcm_s16le -ac 2 -ar 48000 \"$dst_file\"" | |
| echo "About to run command:" | |
| echo "$cmd" | |
| eval "$cmd" | |
| # Make sure the normalize succeeded. | |
| if [ -f "$dst_file" ]; then | |
| touch -r "$src_file" "$dst_file" | |
| else | |
| echo "Normalize Failed" | |
| exit 7 | |
| fi | |
| } | |
| parse_args "$@" | |
| # Sanity checking, to make sure everything is in order. | |
| if [ -z "$SRC" -o -z "$DST" ]; then | |
| print_help | |
| exit 1 | |
| elif [ -f "$SRC" ]; then | |
| # Normalize a single file | |
| srcfile=$SRC | |
| dstfile=$(get_destination_filename "$srcfile") | |
| echo "Normalize $srcfile to $dstfile" | |
| normalize_file "$srcfile" "$dstfile" | |
| elif [ -d "$SRC" ]; then | |
| # Normalize all files in a directory | |
| if [ ! -d "$DST" ]; then | |
| echo "Destination directory does not exist: $DST" | |
| exit 2 | |
| fi | |
| shopt -s nullglob | |
| for srcfile in $SRC/* | |
| do | |
| dstfile=$DST/$(get_destination_filename "$srcfile") | |
| echo "Normalize $srcfile to $dstfile" | |
| normalize_file "$srcfile" "$dstfile" | |
| done | |
| else | |
| echo "$SRC is not a file or directory" | |
| print_help | |
| exit 2 | |
| fi |
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