also quickly create flac-to-opus.bash

bash/flac-to-opus.bash

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+
+set -x
+
+# Pratcially more reasonable version of music-to-mp3.bash, but with more
+# applicable/modern use-case than ancient mp3 players.
+
+# Without ffmpeg we are doomed to fail
+if ! hash ffmpeg 2> /dev/null; then
+	echo "ffmpeg not found"
+	exit 1
+fi
+
+# Convert flacs
+for flac in *.flac; do
+	if [ -f "$flac.opus" ]; then
+		echo "$flac.opus already exists"
+	else
+		ffmpeg -i "$flac" "$flac.opus"
+	fi
+done
+
+# TODO: The output have silly extension .flac.opus
+
+set +x