First new webcast results

Conversations around originating a webcast for conference, including cameras and mixers.
craiggsmith
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First new webcast results

Postby craiggsmith » Sat Oct 10, 2015 11:00 pm

As a test for tomorrow's stake conference we broadcast the evening session tonight. For the most part everything went smoothly, except about 2/3 of the way through the receiving site had a couple buffering events in succession. No apparent reason, CPU load was never very high and network bandwidth was not an issue.

It seems buffering means it would simply stop displaying the stream while it buffers a little more of it, and therefore not actually miss anything and not be a big concern. But it did lose some of the webcast. So I guess I'm going to have to run the old webcast in parallel as a backup. The catch is that in order to switch quickly they would have to be receiving both simultaneously, which to me presents too much risk to the primary webcast. So not sure if there's really any benefit.
Craig
STS
South Jordan, UT

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Mikerowaved
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Re: First new webcast results

Postby Mikerowaved » Sun Oct 11, 2015 6:49 am

craiggsmith wrote:It seems buffering means it would simply stop displaying the stream while it buffers a little more of it, and therefore not actually miss anything and not be a big concern.

Except it really disrupts the spirit of the meeting each time it happens. Let us know how your Sunday session goes.
So we can better help you, please edit your Profile to include your general location.

craiggsmith
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Re: First new webcast results

Postby craiggsmith » Sun Oct 11, 2015 2:57 pm

Certainly true. Fortunately today things went pretty well; here's my report:

I started the webcast during the buffer period around 8:15. I didn't have a chance to check it until 8:45, at which point I noticed that it was just a black screen. The stats showed that the server was receiving the stream, but that no clients were connected. I tried with two computers at two different locations, and used both the receive links as well as the meeting code. I called support and they saw the same thing. I checked my broadcast settings and restarted the stream any way to be sure. We finally gave up and I terminated the meeting and created a new one. The new one was fine without any other changes.

The only issue we had during the broadcast was one site had a minute where bandwidth dropped to 100 and video quality was poor. This was a different site and different computer than the one that had the buffer events last night. It was our most robust computer (quad core i7 with lots of RAM) and fastest internet connection (20 Mbps cable) so no idea why. CPU only averaged 10% with max less than 20%. Maybe an internet connection glitch? The playback bit rate averaged 716; never seemed to try going higher.

The other site had the slowest computer and slowest internet (12 Mbps DSL); it averaged 22% cpu and a bit rate of 900, with no drops.

My computer (dual core i5) averaged 15% cpu also with a bit rate of 900. There was one brief drop to 716. I had a few other things running (like the stats).

The sending bit rate averaged 774 (Vidiu set to medium). All computers were PCs with Firefox 41. There were no buffer events or disconnects, and audio was always fine, so all in all things went pretty well and I'm a little more confident. But I wonder about the auto adjusting bit rate a little; I wonder if it's a little too hypersensitive. We never had any issues on the receiving end with the old system.

I'm not sure the quality was any better than the old system, and in some ways it seemed worse, perhaps due to the upscaling. I had the converter set on 720p. I never tried 1080. The Vidiu said it was receiving 720p at 50 Hz which I thought odd. With both this system and the old one color is really lacking; this may have been a little better but not significantly. I'd really like to get a better camera. I'd also like to get better lighting, but not holding my breath on that one.
Craig
STS
South Jordan, UT

lajackson
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Re: First new webcast results

Postby lajackson » Sun Oct 11, 2015 3:04 pm

Different stake here. We tested Friday and everything worked just fine. Sunday morning we could not get the broadcast to work at all. Our STS got on the phone with headquarters and they said they had to change some settings on the servers there to get the broadcast to work. Once it got going, the broadcast worked well. We used VidiU but I do not have the technical details.

I am glad we started early Sunday, or we would have missed streaming the conference to multiple locations. I cannot imagine why SL would need to do anything to get it going, unless there was a configuration change of some sort that didn't work.

That is always my biggest concern every six months for stake conference. There is too much that is totally out of our control. And a successful test does not seem to be related to a successful broadcast at all, at least in my experience over the last five years or so.

justincy
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Re: First new webcast results

Postby justincy » Sun Oct 11, 2015 8:07 pm

craiggsmith wrote:I started the webcast during the buffer period around 8:15. I didn't have a chance to check it until 8:45, at which point I noticed that it was just a black screen. The stats showed that the server was receiving the stream, but that no clients were connected. I tried with two computers at two different locations, and used both the receive links as well as the meeting code.


We had the happen during tests. That's one reason why we switched to using YouTube.

craiggsmith
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Re: First new webcast results

Postby craiggsmith » Sun Oct 11, 2015 9:01 pm

Hmmm, interesting. I thought they were using an off-the-shelf system, just leasing time on commercial servers. I'd think it would be well sorted out and they wouldn't need to change anything. I had done some testing with Livestream and was going to use that if they didn't come out with this service, but figured I should use the standard.
Craig
STS
South Jordan, UT


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