transcode : add support for flac, mka and mkv.

.README.md

@@ -408,9 +408,6 @@ Please note that colors depend on Terminal Emulator and may vary based on its se
 |yellow|`\033[0;33m`|
 |yellow (bold)|`\033[1;33m`|
 
-## Convert.
-`convert <FORMAT> [FILES]`|Convert between different formats.
-
 ## Copy/paste.
 
 Command|Description
@@ -660,6 +657,9 @@ Command|Description
 `tb_rpmfusion [NAME]`|Install RPMFusion package to box by name. Default is `main`.
 `tbl`|List all boxes.
 
+## Transcode.
+`transcode <FORMAT> [FILES]`|Convert between different formats.
+
 ## Try.
 
 Command|Description

.config/bash/module/convert.sh

@@ -1,91 +0,0 @@
-# Convert between different formats.
-# Usage: convert <FORMAT> [FILES]
-convert()
-{
-  local IFS=$'\n'
-  local targets=("${@:2}")
-  local format="${1}"
-  local total=${#targets[@]}
-  local count=0
-  local failed=0
-
-  # Report no format.
-  if [[ "${format}" = "" ]]; then
-    echo -e "${color_bred}No format specified.${color_default}"
-    echo "Usage: convert <FORMAT> [FILES]"
-    return 2
-  fi
-
-  # All files by default.
-  if [[ "${targets}" = "" ]]; then
-    targets=($(ls --classify | grep -v /$))
-    total=${#targets[@]}
-  fi
-
-  # Process.
-  for target in "${targets[@]}"; do
-    # Increment counter.
-    ((count++))
-
-    # Define context names and status.
-    local from="${target##*.}"
-    local to="${format}"
-    local status="[${count}/${total}] ${target} -> ${target%.*}.${to}"
-
-    # Show status.
-    echo -e "${status}"
-
-    # Skip same format.
-    [[ "${from}" = "${to}" ]] && continue
-
-    # Support multiple inputs.
-    [[ "${to}" = "mp3" ]] && from=""
-
-    # Send convert.
-    case "${from}-${to}" in
-      "gz-xz"|"tgz-txz")
-        _convert_gz-xz "${target}"
-        ;;
-      "xz-gz"|"txz-tgz")
-        _convert_xz-gz "${target}"
-        ;;
-      "-mp3")
-        _convert_mp3 "${target}"
-        ;;
-      *)
-        echo -e "${color_yellow}Conversion ${from}-${to} not supported.${color_default}"
-        ((failed++))
-        false
-        ;;
-    esac
-
-    # Show error.
-    if [[ ${?} != 0 ]]; then
-      echo -e "${color_bred}${target}: Failed.${color_default}"
-      ((failed++))
-    fi
-  done
-
-  if [[ ${failed} != 0 ]]; then
-    echo -e "${color_bred}Failed: ${failed}.${color_default}"
-    false
-  fi
-}
-
-_convert_gz-xz()
-{
-  pv "${1}" | gzip -d | xz -9e > "${1%gz}xz"
-}
-
-_convert_xz-gz()
-{
-  pv "${1}" | xz -d | gzip -1 > "${1%xz}gz"
-}
-
-_convert_mp3()
-{
-  ffmpeg -i "${1}" -c:a libmp3lame -b:a 320k -f mp3 "${1%.*}.mp3"
-}
-
-# Export.
-export -f convert _convert_gz-xz _convert_xz-gz _convert_mp3

.config/bash/module/transcode.sh

@@ -0,0 +1,131 @@
+# Convert between different formats.
+# Usage: transcode <FORMAT> [FILES]
+transcode()
+{
+  local IFS=$'\n'
+  local targets=("${@:2}")
+  local format="${1}"
+  local total=${#targets[@]}
+  local count=0
+  local failed=0
+
+  # Report no format.
+  if [[ "${format}" = "" ]]; then
+    echo -e "${color_bred}No format specified.${color_default}"
+    echo "Usage: transcode <FORMAT> [FILES]"
+    return 2
+  fi
+
+  # All files by default.
+  if [[ "${targets}" = "" ]]; then
+    targets=($(ls --classify | grep -v /$))
+    total=${#targets[@]}
+  fi
+
+  # Process.
+  for target in "${targets[@]}"; do
+    # Increment counter.
+    ((count++))
+
+    # Define context names and status.
+    local from="${target##*.}"
+    local to="${format}"
+    local status="[${count}/${total}] ${target} -> ${target%.*}.${to}"
+
+    # Show status.
+    echo -e "${status}"
+
+    # Skip same format.
+    [[ "${from}" = "${to}" ]] && continue
+
+    # Support multiple inputs.
+    [[ "${to}" = "mp3" ]] && from=""
+    [[ "${to}" = "flac" ]] && from=""
+    [[ "${to}" = "mka" ]] && from=""
+    [[ "${to}" = "mkv" ]] && from=""
+
+    # Send convert.
+    case "${from}-${to}" in
+      "gz-xz"|"tgz-txz")
+        _transcode_gz-xz "${target}"
+        ;;
+      "xz-gz"|"txz-tgz")
+        _transcode_xz-gz "${target}"
+        ;;
+      "-mp3")
+        _transcode_mp3 "${target}"
+        ;;
+      "-av1")
+        _transcode_av1 "${target}"
+        ;;
+      "-flac")
+        _transcode_flac "${target}"
+        ;;
+      "-mka")
+        _transcode_mka "${target}"
+        ;;
+      "-mkv")
+        _transcode_mkv "${target}"
+        ;;
+      *)
+        echo -e "${color_yellow}Conversion ${target##*.}-${to} not supported.${color_default}"
+        false
+        ;;
+    esac
+
+    # Show error.
+    if [[ ${?} != 0 ]]; then
+      echo -e "${color_bred}${status}: Failed.${color_default}"
+      ((failed++))
+    fi
+  done
+
+  if [[ ${failed} != 0 ]]; then
+    echo -e "${color_bred}Failed: ${failed}.${color_default}"
+    false
+  fi
+}
+
+_transcode_gz-xz()
+{
+  pv "${1}" | gzip -d | xz -9e > "${1%gz}xz"
+}
+
+_transcode_xz-gz()
+{
+  pv "${1}" | xz -d | gzip -1 > "${1%xz}gz"
+}
+
+_transcode_mp3()
+{
+  ffmpeg -i "${1}" -c:a libmp3lame -b:a 320k -f mp3 "${1%.*}.mp3"
+}
+
+_transcode_flac()
+{
+  ffmpeg -i "${1}" -c:a flac -f flac "${1%.*}.flac"
+}
+
+_transcode_mka()
+{
+  ffmpeg -i "${1}" -c:a libopus -b:a 128k -vn "${1%.*}.mka"
+}
+
+_transcode_mkv()
+{
+  # Calculate keyframe int.
+  local fps=$(ffprobe -v 0 -of csv=p=0 -select_streams v:0 -show_entries stream=r_frame_rate "${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 35 -svtav1-params 'fast-decode=1:tune=0' -preset 8 -g ${keyint} -vf 'scale=-1:min(1080,ih)' "${1%.*}.mkv"
+}
+
+# Export.
+export -f transcode _transcode_gz-xz _transcode_xz-gz _transcode_mp3 _transcode_flac _transcode_mka _transcode_mkv