transcode : refactor & place output in the same dir.

.config/bash/module/transcode.sh

@@ -31,6 +31,7 @@ transcode()
     local from="${target##*.}"
     local to="${format}"
     local status="[${count}/${total}] ${target} -> ${target%.*}.${to}"
+    local output="${target#../}"
 
     # Show status.
     echo -e "${status}"
@@ -47,25 +48,28 @@ transcode()
     # Send convert.
     case "${from}-${to}" in
       "gz-xz"|"tgz-txz")
-        _transcode_gz-xz "${target}"
+        output="${output%gz}xz"
+        _transcode_gz-xz "${target}" "${output}"
         ;;
       "xz-gz"|"txz-tgz")
-        _transcode_xz-gz "${target}"
+        output="${output%xz}gz"
+        _transcode_xz-gz "${target}" "${output}"
         ;;
       "-mp3")
-        _transcode_mp3 "${target}"
+        output="${output%.*}.mp3"
-        ;;
+        _transcode_mp3 "${target}" "${output}"
-      "-av1")
-        _transcode_av1 "${target}"
         ;;
       "-flac")
-        _transcode_flac "${target}"
+        output="${output%.*}.flac"
+        _transcode_flac "${target}" "${output}"
         ;;
       "-mka")
-        _transcode_mka "${target}"
+        output="${output%.*}.mka"
+        _transcode_mka "${target}" "${output}"
         ;;
       "-mkv")
-        _transcode_mkv "${target}"
+        output="${output%.*}.mkv"
+        _transcode_mkv "${target}" "${output}"
         ;;
       *)
         echo -e "${color_yellow}Conversion ${target##*.}-${to} not supported.${color_default}"
@@ -88,44 +92,56 @@ transcode()
 
 _transcode_gz-xz()
 {
-  pv "${1}" | gzip -d | xz -9e > "${1%gz}xz"
+  pv "${1}" | gzip -d | xz -9e > "${2}"
 }
 
 _transcode_xz-gz()
 {
-  pv "${1}" | xz -d | gzip -1 > "${1%xz}gz"
+  pv "${1}" | xz -d | gzip -1 > "${2}"
 }
 
 _transcode_mp3()
 {
-  ffmpeg -i "${1}" -c:a libmp3lame -b:a 320k -f mp3 "${1%.*}.mp3"
+  ffmpeg -i "${1}" -c:a libmp3lame -b:a 320k -f mp3 "${2}"
 }
 
 _transcode_flac()
 {
-  ffmpeg -i "${1}" -c:a flac -f flac "${1%.*}.flac"
+  ffmpeg -i "${1}" -c:a flac -f flac "${2}"
 }
 
 _transcode_mka()
 {
-  ffmpeg -i "${1}" -c:a libopus -b:a 128k -vn "${1%.*}.mka"
+  ffmpeg -i "${1}" -c:a libopus -b:a 128k -vn "${2}"
 }
 
 _transcode_mkv()
 {
-  # Calculate keyframe int.
+  local keyint=$(_ffprobe_keyint "${1}")
-  local fps=$(ffprobe -v 0 -of csv=p=0 -select_streams v:0 -show_entries stream=r_frame_rate "${1}")
+  local braudio=$(_ffprobe_ba "${1}")
-  fps="${fps%%/*}"
-  local keyint=$((fps*5))
-
-  # Calculate audio bitrate.
-  local braudio=$(ffprobe -v error -select_streams a:0 -show_entries stream=bit_rate -of default=noprint_wrappers=1:nokey=1 "${1}")
-  braudio=$((braudio/1024))
   [[ ${braudio} -gt 128 ]] && braudio=128
 
-  # Convert.
+  ffmpeg -i "${1}" -c:a libopus -b:a ${braudio}k -c:v libsvtav1 -crf 30 -svtav1-params "fast-decode=1:tune=0" -preset 6 -g ${keyint} -vf "scale=-1:min'(1080,ih)'" "${2}"
-  ffmpeg -i "${1}" -c:a libopus -b:a ${braudio}k -c:v libsvtav1 -crf 30 -svtav1-params "fast-decode=1:tune=0" -preset 6 -g ${keyint} -vf "scale=-1:min'(1080,ih)'" "${1%.*}.mkv"
+}
+
+_ffprobe_fps()
+{
+  local fps=$(ffprobe -v 0 -of csv=p=0 -select_streams v:0 -show_entries stream=r_frame_rate "${1}")
+  fps="${fps%%/*}"
+  echo "${fps}"
+}
+
+_ffprobe_keyint()
+{
+  local fps=$(_ffprobe_fps "${1}")
+  echo $((fps*5))
+}
+
+_ffprobe_ba()
+{
+  local ba=$(ffprobe -v error -select_streams a:0 -show_entries stream=bit_rate -of default=noprint_wrappers=1:nokey=1 "${1}")
+  echo $((ba/1024))
 }
 
 # Export.
-export -f transcode _transcode_gz-xz _transcode_xz-gz _transcode_mp3 _transcode_flac _transcode_mka _transcode_mkv
+export -f transcode _transcode_gz-xz _transcode_xz-gz _transcode_mp3 _transcode_flac _transcode_mka _transcode_mkv _ffprobe_keyint _ffprobe_ba _ffprobe_fps