21 files changed, 460 insertions, 10 deletions

diff --git a/common-playbook.yml b/common-playbook.yml
index 4b12e4d..9cb44a3 100644
--- a/common-playbook.yml
+++ b/common-playbook.yml
@@ -71,3 +71,8 @@
   tags: live
   roles:
     - live
+- name: Set up lounge
+  hosts: front
+  tags: lounge
+  roles:
+    - lounge
diff --git a/roles/bbb/tasks/main.yml b/roles/bbb/tasks/main.yml
index 1a4b115..017e939 100644
--- a/roles/bbb/tasks/main.yml
+++ b/roles/bbb/tasks/main.yml
@@ -16,3 +16,13 @@
   with_file:
     - ../../base/files/keys/sachac
     - ../../base/files/keys/orga
+- name: Set up video.yml
+  become: true
+  template:
+    src: video.yml
+    dest: /usr/local/bigbluebutton/core/scripts/video.yml
+- name: Set up bigbluebutton.yml
+  become: true
+  template:
+    src: bigbluebutton.yml
+    dest: /usr/local/bigbluebutton/core/scripts/bigbluebutton.yml
diff --git a/roles/bbb/templates/bigbluebutton.yml b/roles/bbb/templates/bigbluebutton.yml
new file mode 100755
index 0000000..beb8ce8
--- /dev/null
+++ b/roles/bbb/templates/bigbluebutton.yml
@@ -0,0 +1,73 @@
+bbb_version: '3.0.9'
+raw_audio_src: /var/freeswitch/meetings
+mediasoup_video_src: /var/mediasoup/recordings
+mediasoup_screenshare_src: /var/mediasoup/screenshare
+webrtc_recorder_video_src: /var/lib/bbb-webrtc-recorder/recordings
+webrtc_recorder_screenshare_src: /var/lib/bbb-webrtc-recorder/screenshare
+webrtc_recorder_audio_src: /var/lib/bbb-webrtc-recorder/audio
+raw_deskshare_src: /var/bigbluebutton/deskshare
+raw_presentation_src: /var/bigbluebutton
+notes_endpoint: http://127.0.0.1:9002/p
+# Specify the notes formats we archive
+# txt, doc and odt are also supported
+notes_formats:
+  - etherpad
+  - html
+  - pdf
+redis_host: 127.0.0.1
+redis_port: 6379
+# Uncomment and set password if redis require it.
+# redis_password: changeme
+
+# redis_workers_host: 127.0.0.1
+# redis_workers_port: 6379
+
+# Set to true to insert recording process status into
+# redis list with key "store_recording_status: true".
+# This is useful if you want to track progress status
+# and have another script process it.
+store_recording_status: false
+# Whether to anonymize the sender of chat messages in the processed
+# recordings. The settings here are the defaults; they can be overridden
+# by passing meta parameters on the meeting create call.
+# meta param: meta_bbb-anonymize-chat (true/false)
+anonymize_chat: false
+# By default only names of viewers are anonymized - if you would also
+# like to anonymize moderators, you can set this to true:
+# meta param: meta_bbb-anonymize-chat-moderators (true/false)
+anonymize_chat_moderators: false
+# By default, recordings assume the Viewer viewpoint (with all locks)
+# so when webcamsOnlyForModerator=true, only moderators webcams are included in recordings.
+# Use this option to ignore locks and assume Moderator viewpoint instead.
+show_moderator_viewpoint: false
+# Sequence of recording steps. Keys are the current step, values
+# are the next step(s). Examples:
+#   current_step: next_step
+#   "current_step-format": "next_step-format"
+#   current_step:
+#     - next_step
+#     - another_step-format
+steps:
+  archive: "sanity"
+  sanity: "captions"
+  captions:
+    - "process:presentation"
+    - "process:video"
+  "process:presentation": "publish:presentation"
+  "process:video": "publish:video"
+# For PRODUCTION
+log_dir: /var/log/bigbluebutton
+events_dir: /var/bigbluebutton/events
+recording_dir: /var/bigbluebutton/recording
+published_dir: /var/bigbluebutton/published
+captions_dir: /var/bigbluebutton/captions
+playback_host: bbb.emacsverse.org
+playback_protocol: https
+
+# For DEVELOPMENT
+# This allows us to run the scripts manually
+#scripts_dir: /home/ubuntu/dev/bigbluebutton/record-and-playback/core/scripts
+#log_dir: /home/ubuntu/temp/log
+#recording_dir: /home/ubuntu/temp/recording
+#published_dir: /home/ubuntu/temp/published
+#playback_host: bbb.emacsverse.org
diff --git a/roles/bbb/templates/video.yml b/roles/bbb/templates/video.yml
new file mode 100644
index 0000000..461372b
--- /dev/null
+++ b/roles/bbb/templates/video.yml
@@ -0,0 +1,81 @@
+publish_dir: /var/bigbluebutton/published/video
+playback_dir: /usr/local/bigbluebutton/core/playback/video
+# offset applied to audio in the output video file
+# audio_offset = 1000 means that the audio will be delayed by 1000ms
+audio_offset: 0
+
+layout:
+  width: 1280
+  height: 720
+  framerate: 24
+  areas:
+    - name: presentation
+      x: 0
+      y: 0
+      width: 960
+      height: 720
+    - name: webcam
+      x: 960
+      y: 0
+      width: 320
+      height: 720
+    - name: deskshare
+      x: 0
+      y: 0
+      width: 960
+      height: 720
+      pad: true
+nopresentation_layout:
+  width: 1280
+  height: 720
+  framerate: 24
+  areas:
+    - name: webcam
+      x: 0
+      y: 0
+      width: 1280
+      height: 720
+nowebcam_layout:
+  width: 1280
+  height: 720
+  framerate: 24
+  areas:
+    - name: presentation
+      x: 0
+      y: 0
+      width: 1280
+      height: 720
+    - name: deskshare
+      x: 0
+      y: 0
+      width: 1280
+      height: 720
+      pad: true
+formats:
+  #- mimetype: 'video/mp4'
+  #  extension: m4v
+  #  parameters:
+  #    - [ '-c:v', 'copy', # Use working format codec defined in core/lib/recordandplayback/edl/video.rb
+  #        '-c:a', 'aac', '-b:a', '128K',
+  #        '-f', 'mp4', '-movflags', 'faststart' ]
+  #  postprocess: []
+  - mimetype: 'video/webm;codecs="vp09.00.41.08,opus"'
+    extension: webm
+    parameters:
+  #    # Default single-pass encode
+  #    #- [ '-c:v', 'libvpx-vp9', '-level', '4.1', '-b:v', '1800K', '-minrate', '900K', '-maxrate', '2610K',
+  #    #    '-crf', '31', '-quality', 'good', '-speed', '2', '-tile-columns', '2', '-threads', '2',
+  #    #    '-force_key_frames', 'expr:gte(t,n_forced*10)',
+  #    #    '-c:a', 'libopus', '-b:a', '64K',
+  #    #    '-f', 'webm' ]
+      # Slower but better quality two-pass encode
+      - [ '-c:v', 'libvpx-vp9', '-level', '4.1', '-b:v', '1800K', '-minrate', '900K', '-maxrate', '2610K',
+          '-crf', '31', '-quality', 'good', '-pass', '1', '-speed', '4', '-tile-columns', '2', '-threads', '2',
+          '-force_key_frames', 'expr:gte(t,n_forced*10)',
+          '-an',
+          '-f', 'webm' ]
+      - [ '-c:v', 'libvpx-vp9', '-level', '4.1', '-b:v', '1800K', '-minrate', '900K', '-maxrate', '2610K',
+          '-crf', '31', '-quality', 'good', '-pass', '2', '-speed', '2', '-tile-columns', '2', '-threads', '2',
+          '-force_key_frames', 'expr:gte(t,n_forced*10)',
+          '-c:a', 'libopus', '-b:a', '64K',
+          '-f', 'webm' ]
diff --git a/roles/caption/tasks/main.yml b/roles/caption/tasks/main.yml
index 96b3198..dbc5454 100644
--- a/roles/caption/tasks/main.yml
+++ b/roles/caption/tasks/main.yml
@@ -22,6 +22,7 @@
     - num2words
 - name: Set up aeneas
   include_tasks: aeneas.yml
+  when: "'aeneas' in ansible_run_tags"
 - name: Create group
   group:
     name: "{{ emacsconf_group }}"
diff --git a/roles/lounge/defaults/main.yml b/roles/lounge/defaults/main.yml
new file mode 100644
index 0000000..26fbaaa
--- /dev/null
+++ b/roles/lounge/defaults/main.yml
@@ -0,0 +1,4 @@
+lounge_domain: chat.emacsconf.org
+irc_network: irc.libera.chat
+irc_port: 6697
+irc_channels: "#emacsconf, #emacsconf-gen, #emacsconf-dev, and #emacsconf-org"
diff --git a/roles/lounge/tasks/main.yml b/roles/lounge/tasks/main.yml
new file mode 100644
index 0000000..8c6593f
--- /dev/null
+++ b/roles/lounge/tasks/main.yml
@@ -0,0 +1,40 @@
+- name: Create directory
+  file:
+    path: /var/www/{{ lounge_domain }}
+    owner: "{{ emacsconf_user }}"
+    group: "{{ emacsconf_group }}"
+    state: directory
+- name: Set up error page
+  template:
+    src: error.html
+    dest: /var/www/{{ lounge_domain }}/error.html
+    mode: 0755
+    owner: "{{ emacsconf_user }}"
+    group: "{{ emacsconf_group }}"
+- name: Create main configuration if needed
+  template:
+    src: nginx-site-config
+    dest: /etc/nginx/sites-available/{{ lounge_domain }}
+- name: Make sure main configuration is enabled
+  file:
+    src: /etc/nginx/sites-available/{{ lounge_domain }}
+    dest: /etc/nginx/sites-enabled/{{ lounge_domain }}
+    owner: "{{ emacsconf_user }}"
+    group: "{{ emacsconf_group }}"
+    force: no
+    state: link
+- name: Reload configuration
+  become: true
+  service:
+    name: nginx
+    state: reloaded
+- name: Install systemd configuration
+  tags: system
+  become: true
+  template:
+    src: thelounge.service
+    dest: /etc/systemd/system/thelounge.service
+    owner: root
+    group: root
+    mode: 0755
+  when: not use_initd
diff --git a/roles/lounge/templates/error.html b/roles/lounge/templates/error.html
new file mode 100644
index 0000000..5e2a093
--- /dev/null
+++ b/roles/lounge/templates/error.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <title>{{lounge_domain}} currently unavailable</title>
+  <style>
+   body { padding: 20px; font-family: Arial, sans-serif }
+  </style>
+</head>
+<body>
+  <h1>Web-based chat is currently unavailable (code 502)</h1>
+
+  <p>The web-based IRC interface will be available during <a href="https://{{emacsconf_domain}}/{{emacsconf_year}}">{{emacsconf_name}} {{emacsconf_year}}</a>. Please check back then. In the meantime, you can also connect to {{irc_network}}:{{irc_port}} with your favorite IRC client and join {{irc_channels}}.
+
+    <p>This page will refresh when the site is back. You can also check <a href="https://status.emacsconf.org">status.emacsconf.org</a> for updates.</p>
+
+  <noscript>Your browser doesn’t support javascript. Please try refreshing the page manually every few minutes.</noscript>
+
+  <script src="//ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
+  <script>
+   var retryCurrent = 30, retryMax = 60 * 5;
+   async function check() {
+     let result = await fetch(window.location.href, { method: HEAD }).then(resp => {
+       if (resp.status == 200) {
+         window.location.reload(true);
+       } else if (resp.status == 502) {
+         if (retryCurrent < retryMax) {
+           retryCurrent = Math.min(retryCurrent * 2, retryMax);
+         }
+         setTimeout(check, retryCurrent * 1000);
+       }
+     });
+   }
+   setTimeout(check_response, retryCurrent * 1000);
+  </script>
+</body>
+</html>
diff --git a/roles/lounge/templates/nginx-site-config b/roles/lounge/templates/nginx-site-config
new file mode 100644
index 0000000..cc6aa4d
--- /dev/null
+++ b/roles/lounge/templates/nginx-site-config
@@ -0,0 +1,63 @@
+upstream backend {
+    server 127.0.0.1:9000;
+}
+
+proxy_cache_path /var/cache/nginx levels=1:2 keys_zone=thelounge_cache:10m max_size=3g inactive=120m use_temp_path=off;
+
+
+server {
+	  listen 80;
+	  listen [::]:80;
+	  server_name chat.emacsconf.org;
+
+	  include snippets/well-known-acme-challenge.conf;
+
+	  location /js-licenses.html { root /var/www/{{lounge_domain}}; }
+
+	  location / {
+		    return 302 https://$server_name$request_uri;
+	  }
+}
+
+server {
+    listen 443 ssl http2;
+    listen [::]:443 ssl http2;
+    server_name {{lounge_domain}};
+
+	  include /etc/nginx/tls/{{emacsconf_domain}}.conf;
+
+	  location /js-licenses.html { root /var/www/{{lounge_domain}}; }
+    error_page 502 /error.html;
+    location = /error.html {
+        root /var/www/{{lounge_domain}};
+    }
+    location / {
+        proxy_pass http://backend;
+        proxy_http_version 1.1;
+        proxy_set_header Connection "upgrade";
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header X-Forwarded-For $remote_addr;
+        proxy_set_header X-Forwarded-Proto $scheme;
+
+        # by default nginx times out connections in one minute
+        proxy_read_timeout 1d;
+    }
+
+}
+
+#server {
+#	listen 443 ssl http2;
+#       listen [::]:443 ssl http2;
+#	server_name chat.emacsconf.org;
+#
+#	include /etc/nginx/tls/emacsconf.org.conf;
+#	root /var/www/chat.emacsconf.org;
+#}
+
+server {
+    listen 80;
+    listen [::]:80;
+    server_name chat.emacsconf.com chat.emacsconf.net;
+
+    return 302 $scheme://{{lounge_domain}}$request_uri;
+}
diff --git a/roles/lounge/templates/thelounge.service b/roles/lounge/templates/thelounge.service
new file mode 100644
index 0000000..abc4868
--- /dev/null
+++ b/roles/lounge/templates/thelounge.service
@@ -0,0 +1,11 @@
+[Unit]
+Description=The Lounge IRC Client
+After=network.target
+
+[Service]
+ExecStart=/usr/bin/thelounge start
+User=thelounge
+WorkingDirectory=/var/lib/thelounge
+
+[Install]
+WantedBy=multi-user.target
diff --git a/roles/media/tasks/main.yml b/roles/media/tasks/main.yml
index e9daaef..94f10a3 100644
--- a/roles/media/tasks/main.yml
+++ b/roles/media/tasks/main.yml
@@ -49,11 +49,21 @@
   template:
     src: nginx-include
     dest: /etc/nginx/sites-available/{{ media_server_name }}-{{ emacsconf_year }}-include
+- name: Create 404 page
+  template:
+    src: 404.html
+    dest: /var/www/{{ media_server_name }}/404.html
+
 - name: Create main configuration if needed
   template:
     src: nginx-site-config
     dest: /etc/nginx/sites-available/{{ media_server_name }}
     force: no
+- name: Make sure 404 line is in main config
+  lineinfile:
+    line: error_page 404 403 /404.html;
+    dest: /etc/nginx/sites-available/{{ media_server_name }}
+    insertafter: "listen 443 ssl http2;"
 - name: Make sure main configuration is enabled
   file:
     src: /etc/nginx/sites-available/{{ media_server_name }}
diff --git a/roles/media/templates/nginx-site-config b/roles/media/templates/nginx-site-config
index ba25cba..f6a83b1 100644
--- a/roles/media/templates/nginx-site-config
+++ b/roles/media/templates/nginx-site-config
@@ -1,7 +1,17 @@
 server {
-   listen 80;
-   server_name {{ media_server_name }};
-   root /var/www/{{ media_server_name }};
+    listen 80;
+    server_name {{ media_server_name }};
+    root /var/www/{{ media_server_name }};
+    error_page 404 403 /404.html;
+    location / {
+        add_header Cache-Control "no-store, no-cache, must-revalidate";
+        add_header Pragma "no-cache";
+        expires 0;
+    }
+    types {
+        text/plain org;
+    }
+
     location ~* \.vtt$ {
         add_header Cache-Control "no-cache, no-store, must-revalidate";
         add_header Pragma "no-cache";
diff --git a/roles/obs/tasks/mpv.yml b/roles/obs/tasks/mpv.yml
index 4120f8c..c5806a8 100644
--- a/roles/obs/tasks/mpv.yml
+++ b/roles/obs/tasks/mpv.yml
@@ -7,7 +7,8 @@
     repo: deb https://non-gnu.uvt.nl/debian {{ ansible_distribution_release }} uvt
 - name: Install mpv
   apt:
-    name: mpv
+    name: mpv=0.38.0+fruit.1
+    allow_downgrade: true
 - name: Download MPVC
   git:
     repo: https://github.com/lwilletts/mpvc.git
diff --git a/roles/obs/templates/mpv.conf b/roles/obs/templates/mpv.conf
index b9efaae..7b708aa 100644
--- a/roles/obs/templates/mpv.conf
+++ b/roles/obs/templates/mpv.conf
@@ -27,6 +27,14 @@ sub-shadow-color=0/1
 sub-shadow-offset=1.2
 sub-ass-force-style=Kerning=yes
 sub-ass-line-spacing=0
+osd-level=3
+osd-bar-align-x=1
+osd-bar-align-y=1
+osd-bar-h=0.1
+osd-bar-w=0.1
+osd-align-x=right
+osd-align-y=bottom
+osd-scale=0.3
 
 [full]
 video-zoom=0
diff --git a/roles/pad-proxy/templates/etherpad.nginx.conf b/roles/pad-proxy/templates/etherpad.nginx.conf
index b657b98..2c285af 100644
--- a/roles/pad-proxy/templates/etherpad.nginx.conf
+++ b/roles/pad-proxy/templates/etherpad.nginx.conf
@@ -24,6 +24,9 @@ server {
     proxy_buffering off;
     proxy_pass http://etherpad_upstream;
     }
+  location /emacsconf/?$ {
+    return 301 /p/{{ emacsconf_year }};
+    }
   location /p/ {
     rewrite ^/p/(.*) /$1 redirect;
     }
diff --git a/roles/prerec/tasks/main.yml b/roles/prerec/tasks/main.yml
index a0a3cac..98b7f13 100644
--- a/roles/prerec/tasks/main.yml
+++ b/roles/prerec/tasks/main.yml
@@ -1,9 +1,11 @@
 - name: Ensure the directory exists
+  become: true
   file:
     path: "{{ emacsconf_caption_dir }}/{{ item }}"
     state: directory
     owner: "{{ emacsconf_user }}"
     group: "{{ emacsconf_group }}"
+    recurse: true
   loop:
     - scripts
     - cache
diff --git a/roles/prerec/templates/Makefile b/roles/prerec/templates/Makefile
index f58c5d6..778ae3e 100644
--- a/roles/prerec/templates/Makefile
+++ b/roles/prerec/templates/Makefile
@@ -2,21 +2,41 @@
 
 # To recreate this file, use ansible-playbook -i inventory.yml prod-playbook.yml --tags prerec-make
 
-VIDEO_EXTS = mp4 mkv webm mov mpv
+.ONESHELL:
+SHELL := /bin/bash
+# --- Shell Function Definition ---
+# This function checks a given file ($1) for an audio stream.
+# It returns the string "audio" if found, or nothing if not found.
+# This makes the conditional check cleaner.
+define IS_AUDIO_PRESENT_SCRIPT
+	ffprobe -loglevel error -select_streams a:0 \
+	        -show_entries stream=codec_type \
+	        -of default=noprint_wrappers=1:nokey=1 "$1"
+endef
+IS_AUDIO_PRESENT = $(IS_AUDIO_PRESENT_SCRIPT)
+
+source_patterns = $(foreach ext,$(VIDEO_EXTS),$(1)--original.$(ext))
+ANSWER_EXTS = mp4 mkv mov mpv m4v
 source_patterns = $(foreach ext,$(VIDEO_EXTS),$(1)--original.$(ext))
+answer_patterns = $(foreach ext,$(ANSWER_EXTS),$(1)--answers.$(ext))
 
 PRERECS_ORIGINAL := $(wildcard emacsconf-*--original.*)
+ANSWERS_ORIGINAL := $(wildcard emacsconf-*--answers.*)
+ANSWER_PREFIXES := $(shell for f in $(ANSWERS_ORIGINAL); do echo "$${f%--answers.*}"; done)
 PREFIXES := $(shell for f in $(PRERECS_ORIGINAL); do echo "$${f%--original.*}"; done)
+ANSWERS_REENCODED := $(addsuffix --answers--reencoded.webm, $(ANSWER_PREFIXES))
 PRERECS_REENCODED := $(addsuffix --reencoded.webm, $(PREFIXES))
 PRERECS_OPUS := $(addsuffix --reencoded.opus, $(PREFIXES))
+PRERECS_MAIN_OPUS := $(addsuffix --main.opus, $(PREFIXES))
 PRERECS_MAIN := $(addsuffix --main.webm, $(PREFIXES))
 PRERECS_CAPTIONS := $(addsuffix --reencoded.vtt, $(PREFIXES))
 PRERECS_FINAL := $(wildcard emacsconf-*--final.webm)
+WAVEFORMS := $(addsuffix --backstage--waveform.png, $(PREFIXES))
 LINODE_BBB_ID := 67329098
 
 .PHONY: all
 
-all: reencoded opus main
+all: reencoded opus main main-opus waveforms.png
 
 reencoded: $(PRERECS_REENCODED)
 
@@ -26,6 +46,17 @@ captions: $(PRERECS_CAPTIONS)
 
 main: $(PRERECS_MAIN)
 
+main-opus: $(PRERECS_MAIN_OPUS)
+
+waveforms: $(WAVEFORMS)
+
+answers: $(ANSWERS_REENCODED)
+
+emacsconf-%--answers--reencoded.webm: SOURCES = $(call answer_patterns, emacsconf-$*)
+emacsconf-%--answers--reencoded.webm:
+	$(eval SOURCE := $(lastword $(sort $(wildcard $(SOURCES)))))
+	@echo $(SOURCE) $@
+
 emacsconf-%--reencoded.webm: SOURCES = $(call source_patterns, emacsconf-$*)
 emacsconf-%--reencoded.webm:
 	$(eval SOURCE := $(lastword $(sort $(wildcard $(SOURCES)))))
@@ -38,7 +69,12 @@ emacsconf-%--reencoded.webm:
 	reencode-in-screen.sh "$(SOURCE)"
 
 emacsconf-%--reencoded.opus: emacsconf-%--reencoded.webm
-	ffmpeg -y -i "$<" -c:a copy "$@"
+	AUDIO_CHECK=$$( $(call IS_AUDIO_PRESENT, "$<") )
+	if [ ! -z "$$AUDIO_CHECK" ]; then
+		ffmpeg -y -i "$<" -c:a copy "$@"
+	else
+		ffmpeg -y -f lavfi -i anullsrc=channel_layout=stereo:sample_rate=48000 -t 1 -c:a libopus "$@"
+	fi
 
 emacsconf-%--answers.opus: emacsconf-%--answers.webm
 	ffmpeg -y -i "$<" -c:a copy "$@"
@@ -60,11 +96,20 @@ emacsconf-%--main.webm: emacsconf-%--reencoded.webm emacsconf-%--normalized.opus
 emacsconf-%--main.webm: emacsconf-%--reencoded.webm
 	cp "$<" "$@"
 
+emacsconf-%--main.webm: emacsconf-%--reencoded.webm emacsconf-%--main.vtt
+	cp "$<" "$@"
+	ffmpeg -i emacsconf-$*--reencoded.webm -i emacsconf-$*--main.vtt \
+	  -c:v copy -c:a copy \
+    -y $@
+
 emacsconf-%--final.webm: emacsconf-%--main.vtt
 	mux-subs.sh "$@" "$<"
 
 emacsconf-%--main.opus: emacsconf-%--main.webm
-	ffmpeg -y -i "$<" -c:a copy "$@"
+	AUDIO_CHECK=$$( $(call IS_AUDIO_PRESENT, "$<") )
+	if [ ! -z "$$AUDIO_CHECK" ]; then \
+		ffmpeg -y -i "$<" -c:a copy "$@"; \
+	fi
 
 emacsconf-%--reencoded.vtt: emacsconf-%--reencoded.opus
 	whisperx --model large-v3 --align_model WAV2VEC2_ASR_LARGE_LV60K_960H --compute_type int8 --print_progress True --max_line_width 50 --segment_resolution chunk --max_line_count 1 --language en --initial_prompt "Transcribe this talk about Emacs. It may mention Emacs keywords such as Org Mode, Org Roam, Magit, gptel, or chatgpt-shell, or tech keywords such as LLMs. Format function names and keyboard shortcut sequences according to Emacs conventions using Markdown syntax. For example: control h becomes \`C-h\`." "$<"
@@ -116,3 +161,38 @@ live-dormant:
 
 rsync:
 	rsync -avzue ssh {{ emacsconf_caption_dir }}/cache/ orga@media.emacsconf.org:/var/www/media.emacsconf.org/{{ emacsconf_year }}/backstage/
+
+
+WAVEFORM_HEIGHT := 240
+WAVEFORM_WIDTH := 400
+WAVEFORM_VOLUME := 3.0
+WAVEFORM_FILTER := "[0:a]aformat=channel_layouts=mono[b];[b]volume=$(WAVEFORM_VOLUME)[a];[a]compand=attacks=0:points=-90/-90|0/0,showwavespic=s=$(WAVEFORM_WIDTH)x$(WAVEFORM_HEIGHT):colors=\#9cf42f[fg];color=s=$(WAVEFORM_WIDTH)x$(WAVEFORM_HEIGHT):color=\#44582c,drawgrid=width=iw/10:height=ih/5:color=\#9cf42f@0.1[bg];[bg][fg]overlay=format=auto[comp];[comp]drawtext=text='$$ID':fontcolor=white:fontsize=24:x=10:y=10:box=1:boxcolor=\#44582c@0.5:boxborderw=5"
+
+emacsconf-%--backstage--waveform.png: emacsconf-%--normalized.opus
+	AUDIO_CHECK=$$(ffprobe -loglevel error -select_streams a:0 -show_entries stream=codec_type -of default=noprint_wrappers=1:nokey=1 "$<"); \
+	ID=$$(echo "$<" | sed 's/--.*//'); \
+	if [ ! -z "$$AUDIO_CHECK" ]; then \
+		ffmpeg -i "$<" \
+	       -filter_complex $(WAVEFORM_FILTER) \
+	       -frames:v 1 \
+	       -c:v png \
+	       -update 1 \
+	       -y \
+	       "$@"; \
+	fi
+
+emacsconf-%--backstage--waveform.png: emacsconf-%--reencoded.opus
+	AUDIO_CHECK=$$(ffprobe -loglevel error -select_streams a:0 -show_entries stream=codec_type -of default=noprint_wrappers=1:nokey=1 "$<"); \
+	ID=$$(echo "$<" | sed 's/--.*//'); \
+	if [ ! -z "$$AUDIO_CHECK" ]; then \
+		ffmpeg -i "$<" \
+	       -filter_complex $(WAVEFORM_FILTER) \
+	       -frames:v 1 \
+	       -c:v png \
+	       -update 1 \
+	       -y \
+	       "$@"; \
+	fi
+
+waveforms.png: $(WAVEFORMS)
+	convert $^ +append "$@"
diff --git a/roles/prerec/templates/reencode-in-screen.sh b/roles/prerec/templates/reencode-in-screen.sh
index 5c12203..7119572 100755
--- a/roles/prerec/templates/reencode-in-screen.sh
+++ b/roles/prerec/templates/reencode-in-screen.sh
@@ -1,7 +1,11 @@
 #!/bin/bash
 ORIGINAL=$1
 BASE="${ORIGINAL%--original.*}"
-REENCODED="${BASE}--reencoded.webm"
+if [ -n "$2" ]; then
+    REENCODED=$2
+else
+    REENCODED="${BASE}--reencoded.webm"
+fi
 SLUG=$(echo "$ORIGINAL" | perl -ne '/^emacsconf-[0-9]*-(.*?)--/ && print $1')
 LOCK=".lock-$SLUG"
 
diff --git a/roles/prerec/templates/talk b/roles/prerec/templates/talk
index fa2e5f0..a9d4cb0 100755
--- a/roles/prerec/templates/talk
+++ b/roles/prerec/templates/talk
@@ -3,6 +3,9 @@
 # How to use: talk slug from-status-regexp to-status
 # or talk slug to-status
 
+# Statuses:
+# PLAYING:
+
 SLUG="$1"
 FROM_STATUS="$2"
 TO_STATUS="$3"
diff --git a/roles/prerec/templates/thumbnail.sh b/roles/prerec/templates/thumbnail.sh
index 436979d..1cf7372 100755
--- a/roles/prerec/templates/thumbnail.sh
+++ b/roles/prerec/templates/thumbnail.sh
@@ -1,3 +1,3 @@
 #!/bin/bash
 # {{ ansible_managed }}
-ffmpeg -i "$1" -vf "thumbnail,scale=400:225" -frames:v 1 $(echo "$1" | sed s/webm/png/ )
+ffmpeg -y -i "$1" -vf "thumbnail,scale=400:225" -frames:v 1 $(echo "$1" | sed s/webm/png/ )
diff --git a/roles/publish/tasks/main.yml b/roles/publish/tasks/main.yml
index 797ac7f..3ea3784 100644
--- a/roles/publish/tasks/main.yml
+++ b/roles/publish/tasks/main.yml
@@ -39,10 +39,14 @@
     owner: "{{ emacsconf_user }}"
     group: "{{ emacsconf_group }}"
     state: directory
+- name: Debug
+  debug:
+    var: emacs_config_dir
 - name: Set up Emacs configuration for non-interactive publishing
   template:
     src: emacsconf-config.el
     dest: "{{ emacs_config_dir }}/emacsconf-config.el"
+    force: yes
     owner: "{{ emacsconf_user }}"
     group: "{{ emacsconf_group }}"
 - name: Check if Emacs base configuration already exists