Helper Scripts

This is an archive of old stuff. Some things I wrote into dvd_info.

This is just a collection of little scripts.

#!/bin/bash
F=`basename $1 .avi`
MPG=${F}.mpg
if [[ ! -f ${MPG} ]]; then
	mencoder $1 -o $MPG -profile dvd
	fi

#!/bin/bash
eject -t /dev/dvd
eject -t /dev/dvd1

Strip all empty strings and commented strings

#!/bin/bash
grep -vh '^#' "$@" | grep -v '^$'

#!/bin/sh
if [[ -n $1 ]]; then
	dvdxchap /dev/dvd -t ${1} > chapters.txt
else
	dvdxchap /dev/dvd > chapters.txt
fi

#!/bin/sh
CHAPTERS=""
if [[ ! -z $2 ]]; then
	CHAPTERS="-chapter ${2}"
	if [[ ! -z $3 ]]; then
		CHAPTERS="-chapter ${2}-${3}"
	fi
fi
echo mencoder dvd://${1} -ovc copy -nosound -vobsubout movie -o /dev/null -slang en -quiet ${CHAPTERS}

#!/bin/sh
mplayer dvd://${1} -dumpstream -dumpfile movie.vob

Once you pop in a DVD, it takes a few seconds to initialize and be able to read, even though the device shows as available.

This helper script just waits patiently until it can correctly read the DVD.

It calls the binary disc_id which you'll need installed first.

#!/bin/bash
EXIT_CODE=1
DEVICE=$1
if [[ -z $DEVICE ]]; then
	DEVICE=/dev/dvd
fi
 
if [[ ! -b $DEVICE ]]; then
	echo "Device $DEVICE doesn't exist" >&2
	exit 1
fi
 
while [[ $EXIT_CODE != 0 ]]; do
	/usr/local/bin/disc_id $DEVICE 2> /dev/null
	EXIT_CODE=$?
 
	if [[ $EXIT_CODE != 0 ]]; then
		sleep 1
	fi
done