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

[Anthony Minessale]

open another window/tab to chrome://webrtc-internals and look at all of the
stats.

Have you made sure you are not just maxing our your local bandwidth in
either direction?
Did you modify the rtp_video_max_bandwidth_in
and rtp_video_max_bandwidth_out vars in vars.xml  it defaults to 1m


On Wed, Oct 12, 2016 at 12:29 PM, Chad Phillips <chad at apartmentlines.com>
wrote:

> 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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>
>
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>
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>
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-- 
Anthony Minessale II       ♬ @anthmfs  ♬ @FreeSWITCH  ♬

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