ffmpeg : add mux cover.

.README.md

@@ -485,6 +485,7 @@ Variable|Description
 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.
 
 ## File.
 

.config/bash/module/ffmpeg.sh

@@ -9,3 +9,21 @@ ffmpeg_mux_audio()
 
   for file in *; do ffmpeg -i "$file" -i "$1"/"$file" -c copy -map 0:v:0 -map 1:a:0 -shortest "$2"/"$file"; done
 }
+
+# Mux cover into music file.
+# Usage: ffmpeg_mux_cover <FORMAT> <COVER>
+ffmpeg_mux_cover()
+{
+  if [[ "${1}" = "" ]]; then
+    echo "Usage: ffmpeg_mux_cover <FORMAT> <COVER>"
+    return
+  fi
+
+  mkdir out
+
+  for file in *.${1}; do
+    ffmpeg -i "${file}" -i "${2}" -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}"
+}