feat: shrink video experiment

experiments/shrink-video/.gitignore

@@ -0,0 +1,2 @@
+*.webm
+

experiments/shrink-video/shrink.sh

@@ -0,0 +1,41 @@
+#!/bin/bash
+
+crf=${CRF:-25}
+video_codec=${VIDEO_CODEC:-libsvtav1}
+audio_codec=${AUDIO_CODEC:-libopus}
+
+while getopts ":c:v:a:" opt; do
+	case $opt in
+		c)
+			crf=$OPTARG
+		;;
+		v)
+			video_codec=$OPTARG
+		;;
+		a)
+			audio_codec=$OPTARG
+		;;
+		\?)
+			echo "no such arg!"
+			exit 1
+		;;
+	esac
+done
+shift $((OPTIND-1))
+
+if [ $# -eq 0 ]; then
+	echo "no file selected"
+	exit 1
+fi
+
+if ! [ -f $1 ]; then
+	echo "no such file"
+	exit 2
+fi
+
+ffmpeg \
+	-i $1 \
+	-crf $crf \
+	-c:v $video_codec \
+	-c:a $audio_codec \
+	${2:-out.$1}