[Freeswitch-users] More pixelated video canvas on larger number of users

[Chad Phillips]

Here’s another example, perhaps this illustrates it better:
https://youtu.be/PqIjubx4-wI

And it doesn’t seem to be the entire canvas at once, it’s more of a
‘washing over’. I can definitely see it also affecting the banners in this
second example.

I’m also happy to drop you into a live example, it’s pretty easy to see
what I’m talking about when you’re in the conference.

On Wed, Oct 12, 2016 at 9:44 AM, Michael Jerris <mike at jerris.com> wrote:

> It does not seem to be the entire canvas to me.  Look at the text labels
> on the layers… they don’t seem bad at all.
>
> On Oct 12, 2016, at 12:37 PM, Chad Phillips <chad at apartmentlines.com>
> wrote:
>
> Mike, it’s the same if I remove video-codec-bandwidth and video-quality.
> This short video illustrates the issue: https://youtu.be/l8gpHhgmWRI
>
> Notice how with just my feed the quality is much better than with the
> multiple feeds. The pixelation effect seems to periodically ‘wash over’ the
> entire canvas. I’ve had many users report this same issue, even if they
> have excellent internet bandwidth.
>
> Gonzalo, I’ve got a quite beefy physical server, Xeon 32 core, 32GB RAM,
> and a nice fat network pipe. I haven’t ever pulled stats on packets in/out.
>
> On Wed, Oct 12, 2016 at 8:48 AM, Michael Jerris <mike at jerris.com> wrote:
>
>> is it the same if you remove the following:
>>
>>       <param name="video-codec-bandwidth" value="1mb"/>
>>
>>       <param name="video-quality" value="1"/>
>>
>>
>>
>> ?
>>
>> On Oct 12, 2016, at 11:37 AM, Chad Phillips <chad at apartmentlines.com>
>> wrote:
>>
>> Ok, I tested in Firefox, same pixelation issue. One or two video feeds
>> looks good, then it degrades as more feeds are added.
>>
>> Here are the relevant params from my conference config:
>>
>>       <param name="video-canvas-size" value="1080x720"/>
>>       <param name="video-codec-bandwidth" value="1mb"/>
>>       <param name="video-auto-floor-msec" value="800"/>
>>       <param name="video-kps-debounce" value="30000"/>
>>       <param name="video-fps" value="30"/>
>>       <param name="video-quality" value="1"/>
>>
>> On Mon, Oct 10, 2016 at 1:29 PM, Ítalo Rossi <italo at freeswitch.org>
>> wrote:
>>
>>> In which browser?
>>>
>>> On Mon, Oct 10, 2016 at 1:51 PM, Chad Phillips <chad at apartmentlines.com>
>>> wrote:
>>>
>>>> Running Verto/mod_conference videoconference on 1.6.11, I’ve noticed
>>>> that the entire canvas resolution seems more pixelated when the number of
>>>> users connected to the videoconference goes up.
>>>>
>>>> If just one person is connected, the image is very consistent and
>>>> clear, but getting into the 7-10 person range, the quality drops
>>>> noticeably. And I’m not talking about the quality of one particular video
>>>> on the canvas, but the entire canvas quality.
>>>>
>>>> I’ve done a recording of a videoconference on the server with a larger
>>>> number of users, and the video quality there is clear and consistent, so it
>>>> doesn’t seem to be an issue with either receiving or muxing the feeds, but
>>>> in how the end user is receiving the muxed video.
>>>>
>>>> I tried playing with the the ‘video-quality’ and
>>>> ‘video-codec-bandwidth’ conference params — increasing the video-quality
>>>> from 1 to 3 didn’t seem to have much of an impact, increasing the
>>>> video-codec-bandwidth from 1mb to 2mb used quite a bit more CPU, but didn’t
>>>> seem to positively impact the video quality, either.
>>>>
>>>> Curious if I’m missing something in the config, or if there’s something
>>>> else I can do to improve the video quality with a larger number of users.
>>>>
>>>> Chad
>>>>
>>>
>>
>
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