High End Cameras and Adobe Connect

For some time I have been looking at ways to expand the use of high end video cameras with Adobe Connect. There are many reasons to consider higher end cameras not the least of which are optics, sensor size and quality, features, etc… If you need convincing the following should help.

Megapixel vs Sensor Size

Camera sensor size: Why does it matter and exactly how big are they?

I was recently given an opportunity to test the Matrox MX02 Mini and jumped at the chance.



What better way to test it than with my Canon 5D Mark III.  I have really enjoyed using this camera for both stills as well as video.

matrox with blur_HDR3_400

The Matrox MX02 mini gave me the opportunity to see how the Canon camera and Adobe Connect would  work together.  The initial setup was fairly easy. I requested the model that came with a ExpressCard/34 adapter so that I could use my laptop.  On a slightly humorous note my laptop only has a full size ExpressCard slot so a little adjustment was required.


It turns out that cardboard like duct tape has many uses. This was obviously not a short coming of the MX02 Mini but none the less easily overcome.  I decided to use the HDMI input for the test.  The Canon 5D Mark III requires a mini HDMI connector.  I thought I had every adapter made but it turns out a mini HDMI was not one of them, a quick trip to Fry’s fixed that problem.

Matrox AppsThere is software to install for this setup to work.  The installation was easy and included a number of applications. With that said in the end the only software I used was the Matrox USB Webcam Emulator utility.  As you might expect this utility allows the MX02 Mini to appear to the PC as if it were a webcam, making it easy to use with Adobe Connect.   There are five popup boxes in the USB Webcam Emulator: Video Input Format, Video Input Source, Audio Input Source, Video Frame Size and Video Frame Rate. The first three, as expected, have to do with the video device you have connected to the MX02 Mini and the last two have to do with the video output from the MX02 Mini.

Matrox Prefs

I set the output on the Canon camera to 1920 @30 fps (frames per second) IPB. In the Matrox USB Webcam Emulator I set the Video Input Format to 1080@29.97 fps. Since I used HDMI I set the Video Input Source to HDMI and the Audio Input Source to HDMI Channel 1-2. I did not test the RCA left and right for audio input source.

Adobe Connect supports six input resolutions, three for a 4:3 aspect ratio and three for 16:9 aspect ratio. The 4:3 resolutions are: 160×120, 320×240 and 640×480. The 16:9 resolutions are: 214×120, 427×240 and 854×480. Choose the Video Frame Size (video output resolution) that is closest to one of the supported Connect resolutions. For instance the MX02 Mini does not have 427×240 but it does have 424×240. The same is true for 854×480 but it does support 852×480. If you need to change the input or output parameters you may have to restart the Connect meeting/seminar room in order for the settings to take effect. Luckily this is a simple matter with Adobe Connect, simply refresh the browser tab that was used to launch the meeting/seminar room.

Make sure that you have the correct settings in Adobe Connect to match your settings in the Matrox USB Webcam Emulator. As stated previously Adobe Connect supports the following video input resolutions:

4:3 aspect ratio: 160×120, 320×240, 640×480
16:9 aspect ratio: 214×120, 427×240, 854×480

Notice that in the Connect video preference settings of your meeting room there is a slider with four steps (settings).


Each of the slider steps corresponds to a particular resolution, frame rate and compression amount.  At this point we are only concerned about resolution.  The following shows the resolution for both the 4:3 and 16:9 aspect ratio for each setting on the slider from right to left (highest being on the far right of the slider).

 Quality  Resolution (4:3 )  Resolution (16:9 )
 High  640×480  854×480
 Standard  320×240  427×240
 Medium  320×240  427×240
 Low  160×120  214×120

As an example, if your output (Video Frame Size) on the Matrox USB Webcam Emulator was set to 852×480 you would want to use the following settings for the video preferences in the Adobe Connect meeting/seminar room.



I found the Matrox MX02 Mini, Canon 5D Mark III and Adobe Connect to be a great combination.

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I work for Adobe as an SE in focusing on the Flash Media Server family of products.

8 thoughts on “High End Cameras and Adobe Connect”

  1. Hi,

    When you were setting up the video for adobe connect with your Matrox device, were you able to make it play the embedded audio from the camera? I cant seem to make adobe connect see the audio stream.

  2. Hi,
    Have you tried using a Blackmagic Design capture card like the Intensity or Decklink for acquiring live video to Connect?
    Do you know if they work?

    1. Yes, with no luck. I would recommend the Epiphan AV.io in with something like Manycam. See my most recent post.

  3. Thanks so much for this info. I use a couple old DV cameras with 640×480 resolution, analog output, going into a switchbox to select the camera, then into a Roxio Easy VHS to DVD converter, which is simply a USB A/D converter, which is then seen as a webcam. This gives me the use of selectable, multiple cameras with good optics and a low price (as folks are dumping these on Ebay). Your post verifies that high resolution video cameras are overkill for Adobe Connect.

    My Question: In your table of Video Quality and Resolutions, can you also include frame rates? Is the frame rate independently selectable? If not, and these are coupled together so that high resolution also means high frame rates, then the high setting would eat up bandwidth much, much faster, as you know. If they are independently selectable, then we can pick frame rate priority or resolution priority. Thanks again for the info!

    1. I am sorry I just noticed this comment. Frame rate is included in the quality settings of the Connect Meeting Room. I hope to see HD soon and I would expect it to be 20-30FPS. I would have to recheck the bandwidth numbers but the current top fps in a Connect meeting room is 20fps.

      1. Thanks for your reply. I can’t remember when I sent this question. For now, I will use the 640×480 cameras (since the optics and zoom are great and they are all paid for!) and hope for enough bandwidth so things go smoothly.

      2. That should not be a problem. More often than not the problems start when someone tries to publish multiple cameras simultaneously.

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