From 0a91d87456e270617d80db44290da46014d2a7c9 Mon Sep 17 00:00:00 2001
From: Gardouille <gardouille@gmail.com>
Date: Wed, 14 Dec 2022 13:59:41 +0100
Subject: [PATCH] New ffmpeg scripts

---
 ff.extract.subs.sh | 23 +++++++++++++++++++++++
 ff.to.x265.sh      | 34 ++++++++++++++++++++++++++++++++++
 2 files changed, 57 insertions(+)
 create mode 100755 ff.extract.subs.sh
 create mode 100755 ff.to.x265.sh

diff --git a/ff.extract.subs.sh b/ff.extract.subs.sh
new file mode 100755
index 0000000..67f5aa6
--- /dev/null
+++ b/ff.extract.subs.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+#
+# From :
+# https://gist.github.com/kowalcj0/ae0bdc43018e2718fb75290079b8839a
+
+# Can be improve to call ffmpeg only one time :
+# https://gist.github.com/kowalcj0/ae0bdc43018e2718fb75290079b8839a?permalink_comment_id=4187491#gistcomment-4187491
+
+function subs() {
+    movie="${1}"
+    filename="${1%.*}"
+    mappings=`ffprobe -loglevel error -select_streams s -show_entries stream=index:stream_tags=language -of csv=p=0 "${movie}"`
+    OLDIFS=$IFS
+    IFS=,
+    ( while read -r idx lang
+    do
+        echo "Exctracting ${lang} subtitle #${idx} from ${movie}"
+        ffmpeg -nostdin -hide_banner -loglevel quiet -i "${movie}" -map 0:"$idx" "${filename}_${lang}_${idx}.srt"
+    done <<< "${mappings}" )
+    IFS=$OLDIFS
+}
+
+subs "${1}"
diff --git a/ff.to.x265.sh b/ff.to.x265.sh
new file mode 100755
index 0000000..f3683db
--- /dev/null
+++ b/ff.to.x265.sh
@@ -0,0 +1,34 @@
+#!/bin/sh
+#
+# Convert input file to x265 :
+# * Keep only the first audio track (-map 0:a:0)
+# * Keep all subtitles (-map 0:s)
+# * Use fast preset for encoding
+# * Simply add "x265" at the end of the file (before the extension)
+# * Only print progression
+
+# Colors {{{
+readonly RED='\033[0;31m'
+readonly RESET='\033[0m'
+# }}}
+
+x265_convert() {
+	orig_file="${1}"
+	file_name=$(echo "${orig_file}" | sed -e 's/\.[^.]*$//')  # without extension
+	#file_name="${1%.*}" # bash only
+	file_ext=$(echo "${orig_file}" | sed -e 's/.*\.//')  # without extension
+	dest_file="${file_name}.x265.${file_ext}"
+
+	## If subtitles are available
+	if [ $(ffprobe -loglevel error -select_streams s -show_entries stream=index:stream_tags=language -of csv=p=0 "${orig_file}" | wc --lines) -eq "0" ]; then
+		printf "%b\n" "Try to convert original file (${orig_file}) with ffmpeg… without subtitles."
+		ffmpeg -loglevel quiet -stats -i "${orig_file}" -codec:v libx265 -preset fast -crf 28 -codec:a copy -map 0:v -map 0:a:0 "${dest_file}"
+	else
+		printf "%b\n" "Try to convert original file (${orig_file}) with ffmpeg… with subtitles."
+		ffmpeg -loglevel quiet -stats -i "${orig_file}" -codec:v libx265 -preset fast -crf 28 -codec:a copy -codec:s copy -map 0:v -map 0:a:0 -map 0:s "${dest_file}"
+	fi
+
+	printf "%b\n" "New x265 file is available ( ${RED}${dest_file}${RESET} )."
+}
+
+x265_convert "${1}"