#!/bin/sh

[ -z "$1" ] && {
	echo "usage: $0 FILENAME"
	exit 1
}

set -e

file="$1"

ffmpeg -i "$file" \
	-map_metadata -1 \
	-map_chapters -1\
	-fflags +bitexact \
	-metadata:s handler_name='' \
	-metadata:s DURATION='' \
	-metadata:s VENDOR_ID='' \
	-empty_hdlr_name 1 \
	-acodec copy -vcodec copy \
	"nometa_$file"
rm "$file"
mv "nometa_$file" "$file"