diff options
Diffstat (limited to '')
| -rwxr-xr-x | ffmpeg/resize-and-transcode | 126 | ||||
| -rwxr-xr-x | ffmpeg/resize-and-transcode-recursively | 65 |
2 files changed, 191 insertions, 0 deletions
diff --git a/ffmpeg/resize-and-transcode b/ffmpeg/resize-and-transcode new file mode 100755 index 0000000..f3fe017 --- /dev/null +++ b/ffmpeg/resize-and-transcode @@ -0,0 +1,126 @@ +#!/bin/sh + +set -u + +MAX_MIN_DIM=720 + +if test $# -lt 2 || test $# -gt 3; then + printf 'usage: %s input-file output-file [max-min-dim]' "$0" >&2 + exit 3 +fi + +err () { + colour="$1" + format="$2" + shift 2 + printf '\x1b['"${colour}m${format}"'\x1b[m\n' "$@" >&2 +} + +alert () { err "1;31" "$@"; } +header () { err "1;34" "$@"; } +subheader () { err "34" "$@"; } +red () { err "31" "$@"; } +green () { err "32" "$@"; } +yellow () { err "33" "$@"; } +magenta () { err "35" "$@"; } +cyan () { err "36" "$@"; } + +input="$1" +output="$2" +if test $# -ge 3; then + MAX_MIN_DIM="$3" +fi + +if test ! -f "$input" || test ! -r "$input"; then + red 'Input file %s does not exist or is not a readable file, skipping' + exit 2 +fi +if test -e "$output" || test -L "$output"; then + red 'Output file %s already exists, skipping' + exit 2 +fi + +header 'Transcoding %s' "$input" +subheader 'Outputing to %s' "$output" + +dimensions=$(ffprobe -v error -select_streams v:0 -show_entries stream=width,height -of csv=s=x:p=0 -- "$input") +if test -z "$dimensions"; then + red 'An error occured, skipping' + exit 2 +fi + +oldwidth=$(printf '%s\n' "$dimensions" | cut -d 'x' -f 1) +oldheight=$(printf '%s\n' "$dimensions" | cut -d 'x' -f 2) +if test -z "$oldwidth" || test -z "$oldheight"; then + red 'An error occured, skipping' + exit 2 +fi + +scale= +if test "$oldwidth" -lt "$oldheight"; then + if test "$oldwidth" -gt "${MAX_MIN_DIM}"; then + magenta 'The smaller dimension (width) was %i, downscaling to %i' "$oldwidth" "${MAX_MIN_DIM}" + newwidth="${MAX_MIN_DIM}" + newheight=-2 + scale="-vf scale=$newwidth:$newheight" + else + cyan 'The smaller dimension (width) was %i, keeping as it does not exceed %i' "$oldwidth" "${MAX_MIN_DIM}" + fi +else + if test "$oldheight" -gt "${MAX_MIN_DIM}"; then + magenta 'The smaller dimension (height) was %i, downscaling to %i' "$oldheight" "${MAX_MIN_DIM}" + newwidth=-2 + newheight="${MAX_MIN_DIM}" + scale="-vf scale=$newwidth:$newheight" + else + cyan 'The smaller dimension (height) was %i, keeping as it does not exceed %i' "$oldheight" "${MAX_MIN_DIM}" + fi +fi + +if test -z "$scale"; then + codec="$(ffprobe -v error -select_streams v:0 -show_entries stream=codec_name -of default=noprint_wrappers=1:nokey=1 -- "$input")" + if test -z "$codec"; then + red 'An error occured, skipping' + exit 2 + fi + if test "$codec" = hevc; then + cyan 'Already encoded with HEVC, keeping video codec' + codec="-c:v copy" + else + magenta 'Encoded with %s, transcoding to HEVC' "$codec" + codec="-c:v libx265" + fi +else + codec="-c:v libx265" +fi + +if test -z "$scale" && test "$codec" = '-c:v copy'; then + yellow 'The video is already small and encoded in HEVC, skipping' + exit 1 +fi + +ffmpeg -i "$input" $scale $codec -c:a copy -- "$output" +ret=$? + +if test $ret = 0; then + oldsize=$(stat -c '%s' -- "$input") + newsize=$(stat -c '%s' -- "$output") + if test $newsize -ge $oldsize; then + p=$(( 100 * (newsize - oldsize) / oldsize )) + yellow 'The transcoded video was larger than the original (would increase by %i%%), skipping' $p + if ! rm -- "$output"; then + alert 'Failed to remove old file: %s' "$output" + fi + exit 1 + else + p=$(( 100 * (oldsize - newsize) / oldsize )) + green 'The transcoded video was smaller than the original (reduced by %i%%), keeping' $p + exit 0 + fi +else + red 'An error occured, skipping' + if ! rm -- "$output"; then + alert 'Failed to remove old file: %s' "$output" + fi + exit 2 +fi diff --git a/ffmpeg/resize-and-transcode-recursively b/ffmpeg/resize-and-transcode-recursively new file mode 100755 index 0000000..8a7a207 --- /dev/null +++ b/ffmpeg/resize-and-transcode-recursively @@ -0,0 +1,65 @@ +#!/bin/sh +#### rmdir test rm mv mkdir printf sed grep rev cut stat(-c "%s") ffprobe ffmpeg + +set -u + +if test $# -lt 2 || test $# -gt 3 || test -z "$1" || test -z "$2"; then + printf "usage: %s input-dir output-dir [max-min-dim]\n" "$0" >&2 + exit 1 +fi + +err () { + colour="$1" + format="$2" + shift 2 + printf '\x1b['"${colour}m${format}"'\x1b[m\n' "$@" >&2 +} + +alert () { err "1;31" "$@"; } +header () { err "1;34" "$@"; } +subheader () { err "34" "$@"; } +red () { err "31" "$@"; } +green () { err "32" "$@"; } +yellow () { err "33" "$@"; } +magenta () { err "35" "$@"; } +cyan () { err "36" "$@"; } + +input="$(printf '%s\n' "$1" | sed '$s/\/*$/\//')" +output="$(printf '%s\n' "$2" | sed '$s/\/*$/\//')" +shift 2 + +process() { + d="$1" + shift 1 + for f in "$d"*; do + if test -L "$f"; then + continue + elif test -f "$f"; then + if printf '%s\n' "$f" | sed -n '$p' | grep '\.tmp\.mkv$' >/dev/null; then + alert 'Old temporary file found: %s' "$f" + continue + fi + file="${f#$input}" + keep="$output$file" + tmp="$(printf '%s\n' "$f" | rev | cut -d . -f 2- | rev).tmp.mkv" + out="$(printf '%s\n' "$keep" | rev | cut -d . -f 2- | rev).mkv" + mkdir -p -- "$(dirname -- "$out")" + resize-and-transcode "$f" "$tmp" "$@" + r=$? + if test $r = 0; then + if ! mv -- "$tmp" "$out" ; then + alert 'Failed to move %s to %s' "$tmp" "$out" + elif ! rm -- "$f"; then + alert 'Failed to remove old file: %s' "$f" + fi + elif test $r = 1; then + mv -- "$f" "$keep" + fi + elif test -d "$f"; then + process "$f/" "$@" + fi + done + rmdir -- "$d" 2>/dev/null || : +} + +process "$input" "$@" |