From 0963815d6bb6e9cf01b95aa05c3b34a3d6fcaa22 Mon Sep 17 00:00:00 2001
From: Sacha Chua <sacha@sachachua.com>
Date: Tue, 17 Oct 2023 11:59:28 -0400
Subject: add prerec scripts

---
 roles/prerec/templates/remux.sh | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100755 roles/prerec/templates/remux.sh

(limited to 'roles/prerec/templates/remux.sh')

diff --git a/roles/prerec/templates/remux.sh b/roles/prerec/templates/remux.sh
new file mode 100755
index 0000000..c378133
--- /dev/null
+++ b/roles/prerec/templates/remux.sh
@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+# {{ ansible_managed }}
+# Mix in the normalized audio
+# Usage: remux.sh $input_video
+
+with_suffix() {
+    echo "$input_video" | sed "s/--\(reencoded\|original\).webm\$/--$1/"
+}
+
+input_video="$1"
+input_audio="$(with_suffix "normalized.opus")"
+output_video="$(with_suffix "final.webm")"
+main_video="$(with_suffix "main.webm")"
+main_subs="$(with_suffix "main.vtt")"
+
+command="$(cat<<EOF
+ffmpeg -i "$input_video" -i "$input_audio" -c:v copy -c:a copy -map 0:v:0 -map 1:a:0 "$output_video" &&
+       cp "$output_video" "$main_video" &&
+       if [[ -f "$main_subs" ]]; then touch -m "$main_subs"; fi
+EOF
+)"
+
+printf "input: %s\ncomputed output: %s\nrelated main: %s\n\n" "$input_video" "$output_video" "$main_video"
+printf "Produced incantation:\n%s\n\n" "$command"
+
+while true;
+do
+    read -r -p "Run it?  y/n " -n 1 -r response
+    if [[ $response =~ ^([yY])$ ]]; then
+        eval "$command"
+        exit 0
+    else
+        printf "\nExiting\n"
+        exit 3
+    fi
+done
-- 
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