Convert a VCD .dat file to .mp4 video

vcd2mp4

#!/bin/bash
# usage: vcd2mp4 output.mp4 input.dat [input2.dat...] 

if [[ $# -lt 2 ]]; then
	echo "usage: $0 output.mp4 input.dat [input2.dat...]" >&2
	exit 1
fi

output="$1"
shift

# concatenate inputs
declare -a PARAMS
if [[ $# -gt 1 ]]; then
	FILELIST="$(mktemp vcd2mp4_XXXX)"
	while [[ $# > 0 ]]; do
		echo "file '$1'" >> "$FILELIST"
		shift
	done
	PARAMS+=(-f concat -safe 0 -i "$FILELIST")
else
	PARAMS+=(-i "$1")
	shift
fi

PARAMS+=(-vf yadif -c:v libx264 -crf 20 -c:a aac -b:a 128k -movflags +faststart)
PARAMS+=("$output")

echo -n "ffmpeg "
for param in "${PARAMS[@]}"; do echo -n "'$param':q "; done
echo

ffmpeg "${PARAMS[@]}"
code=$?

rm "$FILELIST"

exit $code