1 files changed, 53 insertions, 0 deletions
diff --git a/ffextract-frame b/ffextract-frame
new file mode 100755
index 0000000..b946550
--- /dev/null
+++ b/ffextract-frame
@@ -0,0 +1,53 @@
+#!/bin/sh
+# See LICENSE file for copyright and license details.
+
+set -e
+
+usage () {
+	printf 'usage %s: [-t time] [-y] in-file [out-file]\n' "$0" >&2
+	exit 1
+}
+
+ffmpeg_flag_y=
+ss=10
+
+while getopts t:y flag; do
+	case "$flag" in
+	t)
+		ss="${OPTARG}";;
+	y)
+		ffmpeg_flag_y=-y;;
+	?)
+		usage;;
+	esac
+done
+shift $(( ${OPTIND} - 1 ))
+
+if test ! $# = 1 && test ! $# = 2; then
+	usage
+fi
+
+removeext () {
+	printf '%s\0' "$1" | tr '\0\n' '\n\0' | sed 's/\.[^.]*$//' | tr '\0' '\n'
+}
+
+in_file="$1"
+if test -z "${in_file}"; then
+	usage
+fi
+
+out_file=""
+if test $# = 2; then
+	out_file="$2"
+	if test -z "${out_file}"; then
+		usage
+	fi
+else
+	out_file="$(removeext "${in_file}").png"
+fi
+
+if test "${out_file}" = -; then
+	exec ffmpeg -i "${in_file}" -ss "${ss}" -update 1 -frames:v 1 -c:v png -f image2pipe -
+else
+	exec ffmpeg -i "${in_file}" -ss "${ss}" -update 1 -frames:v 1 ${ffmpeg_flag_y} -- "${out_file}"
+fi