batch.sh

#!/bin/bash

# batch.sh
#
# Copyright (c) 2013 Don Melton
#
# This version published on June 8, 2013.
#
# Batch control for the "encode.sh" script.
#
# Input is read from a file named "queue.txt" which must be in the same
# directory as this script. The queue format is extremely simple. It's just a
# carriage return-delimited list of full paths to media files. The paths can
# contain spaces and shouldn't be quoted.
#
# The path is first deleted from the "queue.txt" file and then passed as an
# argument to the "encode.sh" script. To pause encoding after the "encode.sh"
# script returns, simply insert a blank line at the top of the "queue.txt"
# file.
#
# The "encode.sh" script must also be in the same directory as this script.
#
# Usage:
#
#   ./batch.sh
#

work="$(cd "$(dirname "$0")" && pwd)"
queue="$work/queue.txt"
input="$(sed -n 1p "$queue")"

while [ "$input" ]; do
    sed -i '' 1d "$queue" || exit 1
    "$work/encode.sh" "$input"
    input="$(sed -n 1p "$queue")"
done