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Sunday setup

This entire process can be done by 1 person in 10 minutes if there are no outstanding issues.

Prerequisites

  • Phone and earphones

Procedure

  • Set cameras
  • Start presenting the powerpoint
    • Download this Sunday's powerpoint
    • Start presenting the powerpoint
  • Open OBS and start streaming
    • Open YouTube and log in (usually already logged in)
    • Click Go live on YouTube
    • Set the name of the livestream to 信義會新生堂 x年x月x日
    • Set the thumbnail of the livestream to a screenshot of the first slide of the powerpoint
    • Start streaming in OBS
    • Send livestream link to Whatsapp
    • Continue to monitor the livestream via your phone and earphones
  • (Optional) stream audio check
  • Start Zoom
    • Enter the Zoom room with the given room ID and password (pick from dropdown)
    • Open YouTube and navigate to the livescreen
    • Wait for the host to grant screen-share permissions
    • Screenshare the livestream, taking care to also stream the audio and check the box that says to stream in "video mode"

Camcorder

  • Settings -> CTRL for HDMI -> Off
  • Settings -> Demo Mode -> Off
  • Settings -> Power Save -> Off
  • Photos -> Facial Recognition -> Off

Be cautious when touching the cameras in the winter because static electricity may reset the cameras. Always discharge yourself on a nearby metal object.

Camera 2

The second camera used to be another, higher-quality camcorder, similar to the one mentioned in the previous section. Now it is a PTZ camera with 3x zoom. To control it you can use the remote (the silver remote with all batteries on display).

Camera 4

As of Monday 29 September 2025, a PTZ camera has been installed directly next to the large TV monitor at the back, which is directly above the doorway. It is powered by a Power-over-Ethernet (PoE) switch atop the AV cabinet, and should thus always be powered. There are 3 ways to control it:

  1. Via the remote control
  2. Via the PTZ controller
  3. Via the web portal directly

See the design for the complete system design and rationale.

PTZ controller

The PTZ controller must be returned to the AV cabinet after use. It is powered by a PoE LAN line that should be located near the computer monitors.

  1. Take PTZ controller out of AV cabinet and place to the right of ATEM mini
  2. Connect ethernet line to PTZ controller
  3. Wait a couple of seconds for the system to start up
  4. Check that you are connected to the right network by pressing CAM 1 and using the joystick to control the camera

There are different ways to control the camera.

Joystick. This controls the camera directly.

Presets. Press CALL button and then input the preset number (1-255), followed by the ENTER key. This will cause the camera to move to a certain preset. To set a preset, use the joystick to move the camera to where you want to preset your camera angle, then press PRESET, followed by the preset number (1-255), followed by the ENTER key.

Different ministries have dominion over different ranges of presets, so do not overwrite other ministries' presets.

UsagePreset range (inclusive)
Reserved1-10
Cantonese30-39
English20-29
Mandarin10-19

Numbers outside these ranges are free-for-all.

Zoom

On the off chance that you also have to control the Zoom meeting. The laptop that we will be using is the one that is currently stored in the Sunday School cabinet beside the printer (Cathay Pacific lanyard). It is in the third drawer counting from the top.

  1. Laptop
  2. Power cable
  3. USB to ethernet dongle

The PIN is the same PIN for Cantonese ministry login.

  • When users enter the room, be sure to greet them as an usher would

Existing issue: if the laptop enters a Zoom meeting when the desktop computer livestreams, and when the laptop and desktop computers are both on the same switch (i.e. the laptop via the USB to ethernet dongle), there's a high chance that the livestream on YouTube's side fails. In such cases, use WiFi for laptop connectivity.

In general, use WiFi to connect the laptop to the internet.

Troubleshooting

I take a page out of commercial aviation: Aviate, Navigate, Communicate. Except we can skip the middle one. The most important thing is to continue controlling the Powerpoint and on-site audio. There are usually 2 people assigned to the Sunday post. 1 of them will do the Powerpoint and audio. The other will be there to support and communicate, suggest ideas.

Remember: alt+tab is your friend.

No internet

You won't be able to do anything. Most likely, the following will happen after the internet disconnects for more than 1-2 minutes: YouTube livestream auto-ends, Zoom meeting auto-transfers host to a random other participant. You will be able to troubleshoot when internet returns.

Youtube livestream ends prematurely

You will only be able to troubleshoot when internet returns.

  1. Go to YouTube and Go live again
  2. Start streaming in OBS
  3. Check that we are sending packets to YouTube by checking stream status on YouTube
  4. Send the new stream link in Whatsapp
  5. Redo the Zoom procedure

No video from 3rd frontal camera

  1. Check that the frontal camera is powered
  2. Press the sync button on the HDMI/ethernet bridge
  3. Press the sync button on the ethernet/HDMI bridge

Laggy system

This could be caused by pure chance, and is usually diagnosed at the setup phase. The following are some ways this lag could be mitigated, ordered from least disruptive to most disruptive. Only try them if you absolutely have to.

  1. Reduce the number of PowerPoint files open at once
  2. Close the browser
  3. Restart OBS
  4. Restart the computer

OBS cannot pick up audio/video

Probably caused by a driver not getting detected. These instructions will disrupt the livestream.

  1. Unplug/replug the video mixer USB
  2. Restart OBS

The audio comes from a LAN cable, and I have no clue how it works.