g* auto git commands added, some encoding stuff as well

bin/get_audio

@@ -0,0 +1,38 @@
+#!/bin/bash
+
+err_file="/tmp/getaudio_$$"
+
+if [[ -z "$1" ]]; then
+  printf 'Need a filename of a video\n' >&2
+  exit 1
+fi
+
+input_file="$1"
+if [[ ! -f "$input_file" ]]; then
+  printf "Can't read %s\n" >&2
+  exit 1
+fi
+
+base_path="$(dirname "$input_file" 2>"$err_file")"
+err="$(<"$err_file")"
+
+if [[ -n "$err" ]]; then
+  printf '%s\n' "$err" >&2
+  exit 1
+fi
+
+audio_ext="$(ffprobe "$input_file" 2>&1 | sed -nr 's/.*Audio: (...).*/\1/p')"
+
+if [[ -n "$2" ]]; then
+  if [[ "$2" == *.* ]]; then
+    audio_out="$2"
+  else
+    audio_out="${2}.${audio_ext}"
+  fi
+else
+  out_file="$(basename ${input_file%%.*})"
+  audio_out="${base_path}/${out_file}.${audio_ext}"
+fi
+
+echo ffmpeg -i "$input_file" -vn -acodec copy "$audio_out"
+ffmpeg -i "$input_file" -vn -acodec copy "$audio_out"