diff --git a/.README.md b/.README.md
index 0d32141..0250a7e 100644
--- a/.README.md
+++ b/.README.md
@@ -483,7 +483,7 @@ Command|Description
 ---|---
 `ffmpeg_mux_audio <SOUND> <RESULT>`|Mux external audio into one container with video (replaces original audio). Run inside dir with original video. <SOUND> names should be the same for each video.
 `ffmpeg_mux_cover <FORMAT> <COVER>`|Mux image into files of specified format.
-`ffmpeg_music_artist <FORMAT> <ARTIST>`|Change audio artist metadata.
+`ffmpeg_music_meta <FORMAT>`|Detect and update music metadata.
 
 ## File.
 
diff --git a/.config/bash/module/ffmpeg.sh b/.config/bash/module/ffmpeg.sh
index 6354098..f29e426 100644
--- a/.config/bash/module/ffmpeg.sh
+++ b/.config/bash/module/ffmpeg.sh
@@ -4,7 +4,7 @@ ffmpeg_mux_audio()
 {
   if [[ "$1" = "" ]]; then
     echo "usage: ffmpeg_mux_audio <SOUND> <OUTPUT DIR>"
-    return
+    return 2
   fi
 
   for file in *; do ffmpeg -i "$file" -i "$1"/"$file" -c copy -map 0:v:0 -map 1:a:0 -shortest "$2"/"$file"; done
@@ -16,7 +16,7 @@ ffmpeg_mux_cover()
 {
   if [[ "${1}" = "" ]]; then
     echo "Usage: ffmpeg_mux_cover <FORMAT> <COVER>"
-    return
+    return 2
   fi
 
   local format="${1}"
@@ -28,28 +28,36 @@ ffmpeg_mux_cover()
     ffmpeg -i "${file}" -i "${cover}" -map 0:a -map 1 -codec copy -metadata:s:v title="Album cover" -metadata:s:v comment="Cover (front)" -disposition:v attached_pic ./out/"${file}" || return 1
   done
 
-  mv out/* . && rm -d out/ && rm "${2}"
+  mv out/* .
+  rm -d out/ && rm "${2}"
 }
 
-# Change audio artist metadata.
-# Usage: ffmpeg_music_artist <FORMAT> <ARTIST>
-ffmpeg_music_artist()
+# Change music metadata.
+# Usage: ffmpeg_music_meta <FORMAT>
+ffmpeg_music_meta()
 {
   if [[ "${1}" = "" ]]; then
-    echo "Usage: ffmpeg_music_artist <FORMAT> <ARTIST>"
-    return
+    echo "Usage: ffmpeg_mux_cover <FORMAT> <COVER>"
+    return 2
   fi
 
   local format="${1}"
-  local artist="${2}"
+
+  local artist="${PWD%/*}"; artist="${artist##*/}"
+  local album="${PWD##*/}"; album="${album#*_}"
+  local year="${PWD##*/}"; year="${year%%_*}"
 
   mkdir out
 
   for file in *.${format}; do
-    ffmpeg -i "${file}" -c copy -metadata "ARTIST=${artist}" -metadata "album_artist=${artist}" ./out/"${file}" || return 1
+    local track="${file%%_*}"
+    local title="${file#*_}"; title="${title%.*}"
+
+    ffmpeg -i "${file}" -c copy -metadata "artist=${artist}" -metadata "album_artist=${artist}" -metadata "album=${album}" -metadata "date=${year}" -metadata "track=${track}" -metadata "title=${title}" ./out/"${file}" || return 1
   done
 
-  mv out/* . && rm -d out/
+  mv out/* .
+  rm -d out/
 }
 
 _ffprobe_fps()