now provided by zoom and allowed by uvic to enable for individual account
Join different meetings simultaneously on desktop
Allow user to join different meetings at the same time on one desktop deviceThis feature is only available with version 4.1.28245.0717 or later.
https://support.zoom.us/hc/en-us/articl ... ecognition
Using gesture recognition
Last Updated: June 20, 2022Participants can give more visible feedback through gestures by using gesture recognition. This feature translates a real-world gesture into Zoom’s existing reactions, allowing for visual gestures, such as a raised hand, to automatically display a corresponding meeting reaction and allow users to more easily react during a meeting or webinar. Currently, this feature is supported for Raise Hand and Thumbs Up reactions.
Account owners and admins can enable or disable, as well as lock, this feature at the account and group level. By default, gesture recognition is disabled at the account and group levels but enabled for accounts that have meeting reactions and webinar reactions turned on.
Notes on using gesture recognition
- Gesture must be performed with video on and within the video frame captured by Zoom.
- Only one hand must be visible and away from your face and body.
- For the Thumbs Up reaction, it is best to have the thumb in the upright position.
- For the Raise Hand reaction, it is preferable to use your left hand on the left side of the screen and your right hand on the right side of the screen. In both cases, your palm should be facing the camera and flat. A notification will appear when recognition begins, allowing you to stop the gesture if not intended.
https://github.com/princeton-cabernet/zoom-analysis
This repository contains tools to analyze various performance-related metrics of Zoom meetings solely from packet traces of Zoom traffic. The tools allow inferring the types of media (audio, video, screen share) used, media bit rates, video frame rates and frame sizes, user participation (muted, speaking, silent), and network-related metrics such as frame-level jitter and overall latency from .pcap data captured using, for example, Wireshark. We also provide a Wireshark plugin to analyze Zoom traffic interactively using the Wireshark UI.
The techniques used to extract these metrics and make inferences based on them are described in our paper:
Oliver Michel, Satadal Sengupta, Hyojoon Kim, Ravi Netravali, and Jennifer Rexford. 2022. Enabling Passive Measurement of Zoom Performance in Production Networks. In Proceedings of the 22nd ACM Internet Measurement Conference (IMC ’22), October 25–27, 2022, Nice, France. ACM, New York, NY, USA, 17 pages. https://doi.org/10.1145/3517745.3561414
zoom now has more network diagnosis tools (can also enable diagnosis data viewer)
Network Test
Run a test to measure your network performance and identify bugs.
Test Type: Network Information MTR Service StatusPhone Test
To test the quality of your network, your microphone will be accessed to simulate a call.
Test Type: Network Information Audio QualityMeeting Test
To test the quality of your network, your microphone and camera will be accessed to simulate a virtual meeting.
Test Type: DNS Proxy TLS Web API ZC Connect MMR StatisticsMesh Test
Evaluate your mesh network's performance in your recent meetings, gaining insights and metrics.
Test Type: Mesh
good to empower power users 
with advanced test by mtr, certificate, ping and traceroute (plus tcpdump for the famous ptt)
zoom has a lot of new features and thus constraints---there is no such a limitation before https://support.wharton.upenn.edu/help/zoom-faq
If "Optimize Screen Sharing for Video Clip" is greyed out, the Host must allow only one person to share a screen at a time, rather than multiple.