# basicExample streams occasionally won't load or video freezes mid-call

**URL:** <https://discourse.lynckia.com/t/basicexample-streams-occasionally-wont-load-or-video-freezes-mid-call/284>\
**Category:** Uncategorized\
**Created:** [December 21, 2015, 9:28am UTC](https://discourse.lynckia.com/t/basicexample-streams-occasionally-wont-load-or-video-freezes-mid-call/284 "2015-12-21T09:28:32Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Vincent\_van\_Deemter](https://avatars.discourse-cdn.com/v4/letter/v/5f8ce5/32.png) [@Vincent\_van\_Deemter](https://discourse.lynckia.com/u/Vincent_van_Deemter)\
**Post date:** [December 21, 2015, 9:28am UTC](https://discourse.lynckia.com/t/basicexample-streams-occasionally-wont-load-or-video-freezes-mid-call/284/1 "2015-12-21T09:28:32Z")

</div>

Hi,

I’ve installed Licode along with the basic example on two seperate Linux  
installations using the tutorial at [http://lynckia.com/licode/install.html](http://lynckia.com/licode/install.html).

One Virtualbox installation running a fresh install of Ubuntu 14.04 LTS  
with the following specs:

1024MB RAM  
Intel® Core™ i5-4210U CPU @ 1.70GHz  
40GB HDD

One server also running a fresh install of Ubuntu 14.04 LTS.

2048MB RAM  
2 CPU (Intel® Xeon® CPU E5-2630L v2 @ 2.40GHz)  
40 GB SSD

Both versions appear to run the basic example fine and generally adding  
people to the conference call works. Sometimes however, one of three things  
happens:

1. Ice candidates get sent/received but the element is never  
created (not always on both sides, sometimes one side gets the video but  
the other side doesn’t)
2. Ice candidates get sent/received, the element is created but  
it shows a black screen with an infinitely spinning loading icon.
3. Ice candidates get sent/received, the element is created, the  
stream loads but after a while the video freezes. Audio generally still  
works at this point but the video freezes entirely. When the non-frozen  
stream refreshes the page they’ll get a frozen stream still, though it  
still seems to transmit a single frame upon which it freezes rather than  
the same frame.

I’ve had this happen with about 3 or 4 people in the call, both on separate  
client PCs and when using the same client PC to start 4 streams. The server  
logs/basicExample logs seem to show the same thing and top shows an average  
server load that’s less than 0.50.

I’ve seen some posts from 2013 of people that seemed to have similar  
problems but it being fixed with a patch that came out around that time. Is  
this a known bug or are there any (server) settings I need to tweak  
somewhere to prevent this from happening?