Update customize.md

Add script to docs to setup video recording format.

docs/docs/administration/customize.md

@@ -380,6 +380,27 @@ This pattern can be repeated for additional recording formats. Note that it's ve
 
 After you edit the configuration file, you must restart the recording processing queue: `systemctl restart bbb-rap-resque-worker.service` in order to pick up the changes.
 
+The following script will enable the video recording format a BigBlueButton 2.6+ server.
+
+```
+!/bin/bash
+mkdir -p /etc/bigbluebutton/recording
+cat > /etc/bigbluebutton/recording/recording.yml << REC
+steps:
+  archive: "sanity"
+  sanity: "captions"
+  captions:
+    - process:presentation
+    - process:video
+  process:presentation: publish:presentation
+  process:video: publish:video
+REC
+if ! dpkg -l | grep -q bbb-playback-video; then
+  apt install -y bbb-playback-video
+  systemctl restart bbb-rap-resque-worker.service
+fi
+```
+
 #### Enable generating mp4 (H.264) video output
 
 By default, BigBlueButton generates recording videos as `.webm` files using the VP9 video codec. These are supported in most desktop web browsers, but might not work on iOS mobile devices. You can additionally enable the H.264 video codec in some recording formats (Keep in mind that the following `.yml` files mentioned ahead only exist when the respective format package is installed):