97 lines
2.5 KiB
Bash
97 lines
2.5 KiB
Bash
# Convert between different formats.
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# By default tries to convert all files.
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# Usage: transcode <FORMAT> [FILES]
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function transcode() {
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local IFS=$'\n'
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local format=${1}
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local targets=(${@:2})
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[[ "${targets}" = "" ]] && targets=($(_ls_file))
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# Report no format.
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if [[ "${format}" = "" ]] || [[ "${format}" =~ "." ]]; then
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_error "No format specified."
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help transcode
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return 2
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fi
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process() {
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# Define context names and status.
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local from="${target##*.}"
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local to="${format}"
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local output="${target##*/}"
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output="${output%.*}.${to}"
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# Skip if file exists.
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[[ -f "${output}" ]] && { _iterate_skip "Already exists."; return 0; }
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# Support multiple inputs.
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[[ "${to}" = "mp3" ]] && from=""
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[[ "${to}" = "flac" ]] && from=""
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[[ "${to}" = "mka" ]] && from=""
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[[ "${to}" = "mkv" ]] && from=""
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# Send convert.
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case "${from}-${to}" in
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"gz-xz"|"tgz-txz")
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_transcode_gz-xz "${target}" "${output}"
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;;
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"xz-gz"|"txz-tgz")
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_transcode_xz-gz "${target}" "${output}"
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;;
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"-mp3")
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_transcode_mp3 "${target}" "${output}"
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;;
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"-flac")
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_transcode_flac "${target}" "${output}"
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;;
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"-mka")
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_transcode_mka "${target}" "${output}"
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;;
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"-mkv")
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_transcode_mkv "${target}" "${output}"
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;;
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*)
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_error "Conversion ${target##*.}-${to} not supported."
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return 1
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;;
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esac
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}
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_iterate_targets process ${targets[@]}
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}
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function _transcode_gz-xz() {
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[[ -f "${2}" ]] && return 1
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pv "${1}" | gzip -d | xz -9e > "${2}"
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}
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function _transcode_xz-gz() {
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[[ -f "${2}" ]] && return 1
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pv "${1}" | xz -d | gzip -1 > "${2}"
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}
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function _transcode_mp3() {
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ffmpeg -n -i "${1}" -c:a libmp3lame -b:a 320k -f mp3 "${2}"
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}
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function _transcode_flac() {
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ffmpeg -n -i "${1}" -c:a flac -f flac "${2}"
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}
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function _transcode_mka() {
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local braudio=$(_ffprobe_ba "${1}")
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[[ ${braudio} -gt 128 ]] && braudio=128
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ffmpeg -n -i "${1}" -ac 2 -c:a libopus -b:a ${braudio}k -vn "${2}"
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}
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function _transcode_mkv() {
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local keyint=$(_ffprobe_keyint "${1}")
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local braudio=$(_ffprobe_ba "${1}")
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[[ ${braudio} -gt 128 ]] && braudio=128
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[[ ${braudio} -lt 32 ]] && braudio=32
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# ffmpeg -n -i "${1}" -c:a libopus -b:a ${braudio}k -c:v libsvtav1 -crf 30 -svtav1-params "fast-decode=1:tune=0" -preset 8 -pix_fmt yuv420p10le -g ${keyint} -vf "scale=-2:min'(1080,ih)'" "${2}"
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ffmpeg -n -i "${1}" -map 0 -map -v -map V -map -t -c:s srt -ac 2 -c:a libopus -b:a ${braudio}k -c:v libsvtav1 -crf 30 -svtav1-params "tune=0" -pix_fmt yuv420p10le -g ${keyint} -vf "scale=-2:min'(1080,ih)'" "${2}"
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}
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