From 56528f9655e7c017154275378800f6d3cbc9101d Mon Sep 17 00:00:00 2001
From: Jaidyn Ann <jadedctrl@teknik.io>
Date: Thu, 14 Jan 2021 20:08:28 -0600
Subject: [PATCH] Init

---
 README.txt | 36 ++++++++++++++++++++++++++
 yuja-dl    | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 README.txt
 create mode 100755 yuja-dl

diff --git a/README.txt b/README.txt
new file mode 100644
index 0000000..ff41b20
--- /dev/null
+++ b/README.txt
@@ -0,0 +1,36 @@
+===============================================================================
+YUJA-DL
+===============================================================================
+
+Download videos and subtitles from *.yuja.com with this script.
+Useful if your web-browser doesn't support streaming, or your PC is too weak
+to run one in the first place. Also useful for archival.
+
+I have a blog post on this over at https://xwx.moe/lib/ripping_hls_from_yuja.md
+
+----------------------------------------
+PRE-REQUISITES
+----------------------------------------
+You'll need:
+	* curl
+	* jq
+	* ffmpeg
+	* a shell 
+
+
+----------------------------------------
+USAGE
+----------------------------------------
+$ yuja-dl $VIDEO_URL $OUTPUT_NAME
+
+$VIDEO_URL should be in the format of "https://*.yuja.com/V/Video=?v=*".
+$OUTPUT_NAME will be the basename of the mp4 and srt files.
+
+
+----------------------------------------
+BORING STUFF
+----------------------------------------
+License is CC-0 
+Author is Jaidyn Ann <jadedctrl@teknik.io>
+https://git.feneas.org/detruota/yuja-dl.git
+https://github.com/JadedCtrl/yuja-dl.git
diff --git a/yuja-dl b/yuja-dl
new file mode 100755
index 0000000..aa97a7e
--- /dev/null
+++ b/yuja-dl
@@ -0,0 +1,76 @@
+#!/bin/sh
+# --------------------------------------
+# name: yuja-dl
+# main: Jaidyn Ann <jadedctrl@teknik.io>
+# lisc: CC0
+# date: 2021
+# --------------------------------------
+
+function download_url {
+	local url="$1"; local output="$2"
+	local id="$(echo "$url" | video_id)"
+	local sub="$(echo "$url" | subdomain)"
+	local hls_key="$(get_metadata "$sub" "$id" | hls_file_key)"
+	local captions_key="$(get_metadata "$sub" "$id" | caption_file_key)"
+
+	ffmpeg -i "$(m3u8_url "$hls_key")" "${output}.mp4"
+	curl -o "${output}.srt" "$(caption_url "$sub" "$captions_key")"
+}
+
+function m3u8_url {
+	local hls_key="$1"
+	local fragment="${hls_key}/720p/${hls_key}.m3u8"
+	echo \
+	"https://my.yuja.com/P/Data/VideoUrl/level${fragment}.m3u8?dist=yuja-edits&key=${fragment}"
+}
+
+function caption_url {
+	local subdomain="$1"
+	local caption_key="$2"
+	echo \
+	"https://${subdomain}.yuja.com/P/DataPage/CaptionFile/${caption_key}"
+}
+
+function get_metadata {
+	local sub="$1"; local id="$2"
+	curl -s \
+	"https://${sub}.yuja.com/P/Data/GetVideoListNodeInfo?videoPID=${id}"
+}
+
+function hls_file_key {
+	jq -r .video \
+	| jq -r .videoHLSFileKey.value
+}
+
+function caption_file_key {
+	jq -r .video \
+	| jq -r .captionFileKey.value
+}
+
+function video_id {
+	sed 's%.*v=%%' \
+	| sed 's%&.*%%'
+}
+
+function subdomain {
+	awk -F '.' '{print $1}' \
+	| sed 's%.*//%%'
+}
+
+
+# INVOCATION
+# --------------------------------------
+function usage {
+	echo "usage: yuja-dl URL OUTPUT"
+	echo
+	echo "  URL is a *.yuja.com URL with a video ID argument"
+	echo "  OUTPUT is the basename for the mp4 and srt files"
+	exit 2
+}
+
+URL="$1"
+OUTPUT="$2"
+
+if test -z "$URL" -o -z "$OUTPUT"; then usage; fi
+
+download_url "$URL" "$OUTPUT"