Webcam resolution

[Lê Nhật Tân]

Hello! 

       I have a question about resolution.

       When I'm using Chrome and access to test.bigbluebutton.org, I only get low, medium and high(640x480) but not high definition (1280x960). I think when we set in file settings.yml maxHeight is 960 so my laptop can use 1280x720, but I didnt see the resolution high definition in Chrome. Maybe Chrome set default webcam resolution 640x480 so I can get the high definition resolution. And I check in https://webrtchacks.github.io/WebRTC-Camera-Resolution/, I get only 640x480 pass, sometimes I reload page I can get 1280x720 but usualy I get 640x480. Have you encounted this problem???

      When I'm using  Firefox I have encounted this problem, but I can fix that using about:config in Firefox is to set media.navigator.video.default width and height to 1280x720 so I can get 1280x720 when sharing webcam.

      When I set min and max width and height in settings.yml but it didn't work.

[Chad Pilkey]

I've seen a lot of inconsistency with resolutions before and it's mostly out of our control unfortunately. You can try playing around with the profiles in settings.yml to lower the max height so it's widescreen, but we're kind of at the mercy of the what the device driver gives the browser and then what the browser gives to us.

[Lê Nhật Tân]

Do BBB group intent to fix that issue? I expect we have fix that issue :))  

Vào 01:22:06 UTC+7 Thứ Tư, ngày 24 tháng 7 năm 2019, Chad Pilkey đã viết:

[Fred Dixon]

Hi Lê,

> Do BBB group intent to fix that issue? I expect we have fix that issue :))  

You can expect us to always be improving BigBlueButton.  What Chad pointed out is this isn't something that is fixed easily.  

> And I check in https://webrtchacks.github.io/WebRTC-Camera-Resolution/, I get only 640x480 pass, sometimes I reload page I can get 1280x720 but usualy I get 640x480. Have you encounted this problem???

That's a problem as any application is querying the browser for supported resolutions.  The application can't just guess that the computer supports a given resolution.  If you are refreshing the browser and see inconsistent results, then given the amount of engineering effort is invested by Google and Mozilla (esp. with Chromium as Microsoft is now shifting Edge to using it), you should also expect the browsers to improve.

Regards,... Fred

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[Chad Pilkey]

The resolutions that the browser returns to us are out of our control as I noted in my original reply. We can only use what we're given.

You could try increasing the bit rate of the profiles and see if you get an increase in quality, but the browsers could also be cutting quality if they think there isn't enough upload bandwidth or available CPU/GPU processing.

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[Lê Nhật Tân]

Thanks all Chad and Fred. I appreciate what you have done

Vào 00:16:21 UTC+7 Thứ Năm, ngày 25 tháng 7 năm 2019, Chad Pilkey đã viết: