JPEG resolution in Zoom

[Paul Peterson]

So we’re doing a series of holiday events with families who have children on the spectrum. We’re setting up the families to meet with cast members of Dr. Seuss’s How The Grinch Stole Christmas through Zoom. During the sessions, we are playing back some music from the show and showing JPEG’s of the cast. I’m using Syphon Virtual Webcam to push the images into Zoom using Screen Share. The hi-res photos look great in the Syphon window, but get pretty blurry when sent to Zoom. I’m not a graphics or Zoom wiz, so I don’t know if this is happening due to limitations in Zoom, Syphon, or perhaps I’m not configuring QLab correctly.

Any advice would be greatly appreciated!

-paul peterson

[Andy Dolph]

The long and the short of it is that zoom tends to often operate at low resolution. There are a few ways to make it better. For your application the easiest one that occurs to me is to go in to Zoom as a screen share rather than a camera. If you don’t need good motion in a screen share it does a low frame rate but higher resolution.

In my experience a less reliable solution is that in the zoom preferences you can turn on HD video - but really what that does is turn on the POSSIBILITY of HD video not a guarantee of it.

See if one of those solves it for you - if not write back.

I’ll mention, the surest way I know of to get high resolution on zoom calls is to have a Zoom Room dialed in to the call - it bumps the whole call to at least 720p. But that requires dedicating a computer to be the “zoom room” hardware with a video capture card (or cards) and a license for the Zoom Room software.

> On Dec 3, 2020, at 9:34 PM, Paul Peterson <paulp...@gmail.com> wrote:
>
> So we’re doing a series of holiday events with families who have children on the spectrum. We’re setting up the families to meet with cast members of Dr. Seuss’s How The Grinch Stole Christmas through Zoom. During the sessions, we are playing back some music from the show and showing JPEG’s of the cast. I’m using Syphon Virtual Webcam to push the images into Zoom using Screen Share. The hi-res photos look great in the Syphon window, but get pretty blurry when sent to Zoom. I’m not a graphics or Zoom wiz, so I don’t know if this is happening due to limitations in Zoom, Syphon, or perhaps I’m not configuring QLab correctly.

>
> Any advice would be greatly appreciated!
>
> -paul peterson
>

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[Fred 4Red]

If you can find a facebook Portal Mini on sale for $65, it will also turn on the Zoom HD at 720p.

Hope this helps,

Fred

[Paul Peterson]

So I’m beginning to suspect we are at the mercy of the Zoom Gods. Sometimes we run the show and the images are clean, other times, they’re a bit fuzzy. Doesn’t matter if we restart QLab or leave the session open.

The other odd thing that is happening is when we share the screen we’ll randomly see the OBS logo flash in the background briefly, and then our image will pop up. Our SM is preloading the image before she shares the screen, but for whatever reason, the OBS image flashes when she hits Share in Zoom. I’m looking for a way to change that image to a black .png, you can do it in Windows but there doesn’t seem to be an easy way to do it on a Mac.

Anyone else experience this?

-paul

> To view this discussion on the web visit https://groups.google.com/d/msgid/qlab/AAF26989-244A-4A4F-92CB-2B80F5A28FF2%40gmail.com.