Webinar HD Features create an issue!

Question

I had an event that I was streaming to a Webinar, unfortunately I toggled ON the "Enable HD video for attendees" and "Always send 1080p video to attendees" when I created the webinar and for the first time ever hell broke loose.

Employees watching the webinar mostly from the office, the feed was stuttering like crazy, every few minutes Zoom App would display that "Mic isn't Working" and my audio would stop. I have to mute the mic and unmute it for it to resume.

Unfortunately I didnt read the feature help when i toggled it ON but why would anyone create a feature that is not adaptive? meaning if the attendee cannot handle HD1080p then just dont send him 1080P, instead Zoom was enforcing the resolution and thus chocking everyones bandwidth.

Anybody face such scenario with these features?

Rupert · Answer

Hi @MarkWehbeh

1080p does needs to be treated carefully. I have certainly seen problems when it is not.

First of all, sending HD to Participants (or attendees in the case of Webinar) can certainly put a strain on lower power systems. Particularly if you choose "Always send 1080p video to attendees" - as that takes away the ability to scale down to 720p.

Zoom is very adaptive, but it is also very configurable. You have the option to to enable "always send 1080p video to attendees" - and that's exactly what it does.

If multiple/many attendees are in one location (sharing an internet connection) then it can cause network congestion, depending on the numbers involved and bandwidth available. If there's WiFi involved, you could be in bigger trouble.

A 1080p feed can consume 3-6 Mbps, depending on the circumstances. To each Participant, that can add-up.

Even in a 720p Meeting, I have seen (or rather heard) Participants return audio to me breakup, just because I was sending them HD Video just in 720. That's generally been an under-powered machine.

For enterprise situations were you have large numbers of on-site attendees, some people look at using an on-premise Zoom infrastructure in a hybrid modem - like using the Zoom Meeting Connector Controller, or Zoom Multimedia Router (MMRs).

See: https://support.zoom.us/hc/en-us/articles/360034064852-Zoom-On-Premise-Deployment

Hope this helps.

I use 1080p for large events extensively. If you need any extra help, reach out to me with a Direct Message.

Rupert

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