132 lines
3 KiB
Bash
132 lines
3 KiB
Bash
|
# 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
|