Convert videos to MP4 with HandBrake (http://handbrake.fr)

video_converter

#!/bin/bash
#
# search for .m2ts, .mov, .mp4 files and convert them to .m4v files with HandBrake
# search in current dir or in files/folders given as args

if [[ "$*" == *--help* ]] ; then
    cat <<EOF
Usage: $0 [path or file] ...

Convert all .m2ts, .mov, .mp4 videos in given paths or files 
(or in $(pwd)) to 3 .m4v (with H264 and AAC) videos: 
For iPod (320p), 720p and full resolution of the input video.

Uses HandBrakeCLI (http://handbrake.fr) for actual video conversion.

Licensed under the GNU General Public License.
Written by Schlomo Schapiro
EOF
	exit 1
fi

# we store a configuration matrix connecting file suffixes to HandBrake profiles.
# for each suffix we create a corresponding file
HB_CONFIG_MATRIX=(
	.ipod.m4v:"-e x264 -b 700 -5 -2 -T -O -a 1 -E faac -B 160 -6 dpl2 -R Auto -D 0.0 -f mp4 -I -X 320 -m -x level=30:bframes=0:cabac=0:ref=1:vbv-maxrate=768:vbv-bufsize=2000:analyse=all:me=umh:no-fast-pskip=1:subme=6:8x8dct=0:trellis=0"
	.720.m4v:"-e x264 -q 20.0 -5 -4 -O -a 1 -E faac -B 160 -6 dpl2 -R Auto -D 0.0 -f mp4 -X 1280 --crop 0:0:0:0 -m -x ref=2:bframes=2:subme=6:mixed-refs=0:weightb=0:trellis=0:me=umh"
	.full.m4v:"-e x264 -q 20.0 -5 -4 -O -a 1 -E faac -B 160 -6 dpl2 -R Auto -D 0.0 -f mp4 --crop 0:0:0:0 -m -x ref=2:bframes=2:subme=6:mixed-refs=0:weightb=0:trellis=0:me=umh"
)

die() {
	echo 1>&2 "ERROR: $@"
	exit 1
}

getsize() {
	# get size of $1
	read size junk < <(du -h "$1") || return 1
	echo $size
}

print_seconds() {
	printf "%02d:%02d:%02d" $(($1/60/60)) $((($1/60)%60)) $(($1%60))
}

type -p HandBrakeCLI >/dev/null || die "Could not find HandBrakeCLI in PATH"

WORK=$(mktemp -t -d video_converter-XXXXXXXXXXX)
trap '$KEEPWORKDIR rm -Rf $WORK' 0
trap "" SIGSEGV SIGFPE

mkdir -p $WORK/.config/ghb
touch $WORK/.config/ghb/presets
export HOME=$WORK # fake homedir for HandBrakeCLI

let video_converted_count=0
#set -x

JOBS=()
let jobcount=0
# read videos into array
mapfile -t VIDEOS < <( find "$@" -path "*.Trash*" -prune -o -type f \( -iname \*.m2ts -o -iname \*.mov -o -iname \*.mp4 \) -printf "%H/%P\n" )
for video_source in "${VIDEOS[@]}"; do
	if [[ "$video_source" == *:* ]] ; then
		# do not support filenames with : in them (unlikely as : is illegal on Windows)
		die "Invalid character ':' found in '$video_source'"
	fi
	#echo "Considering $video_source"
	for jobdef in "${HB_CONFIG_MATRIX[@]}" ; do
		JOBS[$jobcount]="$video_source:$jobdef"
		let jobcount++
	done
done

let tries=1 max_tries=5

let current=0 
while test $current -lt ${#JOBS[@]} ; do
	IFS=: read video_source suffix profile <<<"${JOBS[$current]}"
	org_size="$(getsize "$video_source")" || die "Could not determine size of '$video_source'"
	video_dest_base="${video_source%.*}" # remove last suffix
	video_dest="$video_dest_base$suffix"
	log_file="$WORK/${video_dest_base////_}.log" # convert / to _ in log file name
	#### enable these for dummy mode
	#echo "Would convert $video_source to $video_dest"
	#let tries=max_tries
	#continue
	if test -s "$video_dest" ; then
		# echo "Skipping '$video_dest'"
		let tries=max_tries
	else
		let start=SECONDS
		# initialize log file with HandBrakeCLI options
		declare -p video_source video_dest profile >"$log_file"
		#
		# protect the outer find | while read loop from HandBrakeCLI ! -------------------------------------\
		#												    |
		#												   \./
		if HandBrakeCLI -v 1 $profile -i "$video_source" -o "$video_dest.video_converter" >>"$log_file" 2>&1 </dev/null && [[ -s "$video_dest.video_converter" ]] ; then
			let conversion_time=SECONDS-start
			mv "$video_dest.video_converter" "$video_dest" || die "Could not move '$video_dest.video_converter' to '$video_dest'"
			new_size="$(getsize "$video_dest")" || die "Could not determine size of '$video_dest'"
			rm -f "$log_file"
			touch -c -r "$video_source" "$video_dest"	# keep mtime of orginial file
			echo "Converted ($org_size -> $new_size) '$video_dest' in $(print_seconds $conversion_time)"
			let video_converted_count++ tries=max_tries
		else
			echo -n "HandBrakeCLI '$video_source' failed with profile '$profile'."
			if [ $tries -lt $max_tries ] ; then
				echo " Retrying $tries of $max_tries"
			else
				echo " Reached maximum $max_tries tries, skipping!"
				echo
				echo " Log file of last conversion attempt:"
				sed -e 's/^/   /' "$log_file"
			fi
			rm -f "$video_dest.video_converter" "$log_file"
		fi
	fi
	if test $tries -ge $max_tries ; then
		let current+=1 tries=1
	else
		let tries+=1
	fi
done

if [ $video_converted_count -gt 0 ] ; then
	echo "Converted $video_converted_count videos in $(print_seconds $SECONDS)"
fi