New VidiU Webcast - Slow Receiving Laptops

Using the Church Webcasting System, YouTube, etc. Including cameras and mixers.
justincy
Member
Posts: 57
Joined: Sat Dec 27, 2008 10:16 am
Location: United States

Re: New VidiU Webcast - Slow Receiving Laptops

Postby justincy » Mon May 25, 2015 6:37 pm

Mikerowaved wrote:
rolandc wrote:I have not been able to get a solid answer as to why we can broadcast in HD but are limited to 500kbs on the receive side. I have buildings with FIOS and powerful quad core computers and every test and broadcast is locked at 500kbs.

I can download 4000kbs streams all day long without issue, Hopefully they will remove the cap soon.

Until they do, I'll be using other means for streaming. To me, this is an unrealistic quality limit being imposed on the stakes.


I agree.

coolnsdc
New Member
Posts: 8
Joined: Sat Nov 05, 2011 12:24 pm

Re: New VidiU Webcast - Slow Receiving Laptops

Postby coolnsdc » Tue May 26, 2015 6:00 pm

Well, at least now I have something to report to the stake. Thanks for the info. That would explain why only a high-end alienware laptop would get the full experience in my case.

rolandc
Member
Posts: 257
Joined: Tue May 15, 2012 7:20 pm

Re: New VidiU Webcast - Slow Receiving Laptops

Postby rolandc » Wed May 27, 2015 3:33 am

My opinion, its being done to conserve resources. I am sure they were overwhelmed by the rate stakes are adapting to the new system.

As we all know Webcasting sorely needed updating. In time I am very hopeful the cap will be raised.
Roland

coolnsdc
New Member
Posts: 8
Joined: Sat Nov 05, 2011 12:24 pm

Re: New VidiU Webcast - Slow Receiving Laptops

Postby coolnsdc » Wed May 27, 2015 5:58 am

That doesn't make sense though. The upload speed is not limited, nor is the download speed if you have a high-end decoding machine. If it was to conserve resources, they would limit it regardless of end-user hardware, and limit the upload speed as well.

Also, as they are using Microsoft Azure to host the webcast system, I don't think it's a limitation of their system since they can easily spin up more VMs as needed.

I'd speculate that it was simply an attempt to lock down a speed that would work for everyone, but didn't really consider that machines are much more capable than they give them credit for. I'd love to hear from the source what their reasoning was.

russellhltn
Community Administrator
Posts: 30105
Joined: Sat Jan 20, 2007 2:53 pm
Location: U.S.

Re: New VidiU Webcast - Slow Receiving Laptops

Postby russellhltn » Wed May 27, 2015 10:31 am

I'd be curious as to the cost structure of the Azure system. Perhaps there's a cost based on the amount of data sent out from the cloud. The receiving machine specs might be the only usable tool they have to limit speed.
Have you searched the Help Center? Try doing a Google search and adding "site:churchofjesuschrist.org/help" to the search criteria.

So we can better help you, please edit your Profile to include your general location.

stevei00
New Member
Posts: 3
Joined: Sun Jun 15, 2014 4:15 pm

Re: New VidiU Webcast - Slow Receiving Laptops

Postby stevei00 » Thu Jun 04, 2015 9:18 pm

I talked to someone in technical support today that indicated the limitation of the bitrate is based on the image broadcast. In cases where there have been caps on bitrate, its normally because the camera didn't produce a high enough quality video. I was told the media server analyzes the video quality received and determines the bitrate cap for receiver sites.

From what I was told, it doesn't have anything to do with the Receive equipment performance.

coolnsdc
New Member
Posts: 8
Joined: Sat Nov 05, 2011 12:24 pm

Re: New VidiU Webcast - Slow Receiving Laptops

Postby coolnsdc » Fri Jun 05, 2015 6:40 am

stevei00 wrote:I talked to someone in technical support today that indicated the limitation of the bitrate is based on the image broadcast. In cases where there have been caps on bitrate, its normally because the camera didn't produce a high enough quality video. I was told the media server analyzes the video quality received and determines the bitrate cap for receiver sites.

From what I was told, it doesn't have anything to do with the Receive equipment performance.


That wasn't my experience. If I used my alienware laptop, the bitrate cap was 4x what the other laptops could achieve.

russellhltn
Community Administrator
Posts: 30105
Joined: Sat Jan 20, 2007 2:53 pm
Location: U.S.

Re: New VidiU Webcast - Slow Receiving Laptops

Postby russellhltn » Fri Jun 05, 2015 12:42 pm

stevei00 wrote:I talked to someone in technical support today that indicated the limitation of the bitrate is based on the image broadcast. In cases where there have been caps on bitrate, its normally because the camera didn't produce a high enough quality video. I was told the media server analyzes the video quality received and determines the bitrate cap for receiver sites.

I think someone is confusing "cap" and "actual". If the stream can be adequately described in a lower bit rate, the actual bit rate will be well below the cap. The system isn't going to add additional bits just to make up the difference.
Have you searched the Help Center? Try doing a Google search and adding "site:churchofjesuschrist.org/help" to the search criteria.

So we can better help you, please edit your Profile to include your general location.

coolnsdc
New Member
Posts: 8
Joined: Sat Nov 05, 2011 12:24 pm

Re: New VidiU Webcast - Slow Receiving Laptops

Postby coolnsdc » Tue Jun 09, 2015 6:53 am

russellhltn wrote:I think someone is confusing "cap" and "actual". If the stream can be adequately described in a lower bit rate, the actual bit rate will be well below the cap. The system isn't going to add additional bits just to make up the difference.


Thanks for pointing that out. Let me clarify. There is a big difference in video quality between 500K and 2000K bitrate, and only my alienware laptap is allowed to do download/process/display the stream at the 2000K bitrate CAPPED and ACTUAL. Using other hardware, I'm CAPPED at 500K, hence my ACTUAL is also 500K.

rolandc
Member
Posts: 257
Joined: Tue May 15, 2012 7:20 pm

Re: New VidiU Webcast - Slow Receiving Laptops

Postby rolandc » Thu Jun 11, 2015 1:06 pm

coolnsdc wrote:
russellhltn wrote:I think someone is confusing "cap" and "actual". If the stream can be adequately described in a lower bit rate, the actual bit rate will be well below the cap. The system isn't going to add additional bits just to make up the difference.


Thanks for pointing that out. Let me clarify. There is a big difference in video quality between 500K and 2000K bitrate, and only my alienware laptap is allowed to do download/process/display the stream at the 2000K bitrate CAPPED and ACTUAL. Using other hardware, I'm CAPPED at 500K, hence my ACTUAL is also 500K.


I have tested and have found the same thing. 500k cap is based on CPU cores.
Roland


Return to “Non-Interactive Webcasting”

Who is online

Users browsing this forum: No registered users and 3 guests