fix(user/bkdatev):Make compatible with Bash 3.2.57

[BK-2020-03.git] / user / convert_file_to_flac.sh

diff --git a/user/convert_file_to_flac.sh b/user/convert_file_to_flac.sh
index f21a0fc012261b20b9141b09bc510cf323c69c2b..cc6c621547f9fb1b4a30c46c0f93010d2e25be2d 100644 (file)
--- a/user/convert_file_to_flac.sh
+++ b/user/convert_file_to_flac.sh
@@ -1,8 +1,11 @@
-#!/bin/bash
-# Desc: Converts file readable by ffmpeg to FLAC audio format
+#!/usr/bin/env bash
+# Desc: Converts file readable by ffmpeg to FLAC audio file
 # Usage: convert_file_to_flac.sh [path]
-# Version: 0.0.1
+# Version: 0.0.3
 # Ref/Attrib: [1] Convert audio file to FLAC with ffmpeg? https://superuser.com/a/802126
+#             [2] How to specify flac compression level when converting with avconv? https://askubuntu.com/questions/544651/
+#             [3] How can I extract audio from video with ffmpeg? https://stackoverflow.com/a/27413824
+# Depends: ffmpeg version 4.4.2, ffprobe version 4.4.2, bash version 5.1.16
 
 declare -Ag appRollCall # Associative array for storing app status
 declare -Ag fileRollCall # Associative array for storing file status
@@ -213,8 +216,8 @@ main() {
     if ! check_parsable_audio_ffprobe "$1"; then
         die "FATAL:Not an audio file:$1"; fi;
     
-    # Convert file to FLAC
-    try ffmpeg -i "$1" -f "$1".flac
+    # Convert file to FLAC. See [1], [2]
+    try ffmpeg -i "$1" -vn -c:a flac -compression_level 12 "$1".flac
 }; # main program
 
 main "$@";