The following are the items used currently, the link are reference to the model, you can probably buy them elsewhere.
I'd suggest laptop that supports hardware encoding which should reduce the CPU requirement by a lot.
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Intel Quicksync
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AMD VCE
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Nvidia NVENC
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Apple VT H264 (!!! You need a UVC compatible capture card)
HDMI Splitter (with HDCP support) (This is a must!)
https://www.amazon.com/dp/B004F9LVXC/
I'm using the C920.
https://www.amazon.com/Logitech-Widescreen-Calling-Recording-Desktop/dp/B006JH8T3S/
If the price is not much difference, I'd suggest getting the C922
https://www.amazon.com/Logitech-C922x-Pro-Stream-Webcam/dp/B01LXCDPPK/
Avermedia C875 (This is the one I'm using, but it only works well on Windows)
https://www.amazon.com/AVerMedia-Portable-Recording-Definition-Streaming/dp/B00B2IZ3B0
If you're looking for capture card, look for UVC support.
Some of the cards on my list,
Elgato Camlink
https://www.amazon.com/Elgato-Cam-Link-Broadcast-Camcorder/dp/B0748QYPX9/
Magewell HDMI Capture
I'd skip anything from Blackmagic.
For audio capture, I'd suggest one of the following set, personally, I'd recommend the wireless one.
https://www.lazada.com.my/-i395591584-s570138120.html
Condenser microphone
https://www.amazon.com/gp/product/B01HTMA69Q/
USB Audio Interface
https://www.amazon.com/gp/product/B00EK1OTZC/
16ft XLR Cable
https://www.amazon.com/gp/product/B01EMO8GQ4/
I'd recommend this tripod for desktop mounting,
I have one of the Hercules one for podium
http://herculesstands.com/international/products/microphone/boom/
These are accesories that you can source locally easily.
- Power extension, personally I prefer the belkin one. https://www.lazada.com.my/-i108269632-s110536260.html
- Tripod mount for the webcam.
- 2 to 3 HDMI cables, and at least one has to be more than 5 meters to be able to cover most situation.
- USB 3.0 Hub.
You might also need the following adapter depending on the speaker's set-up
- Thunderbolt to HDMI
- USB-C to HDMI (Recommended)
- VGA to HDMI (Mainly to hook up old system)
For output support
- HDMI to VGA