Webcast
Troubleshooter


- - - - - - - - - - - - - -

Conduct Firewall Test

- - - - - - - - - - - - - -

Check Bandwidth
(opens in new tab)

- - - - - - - - - - - - - -

Turn On Quality Monitor


- - - - - - - - - - - - - -

Turn Off Quality Monitor


- - - - - - - - - - - - - -

HD Quality (3000k)

VHS/SD Quality (1000k)

DSL Quality (700k)

3G Quality (250k)

- - - - - - - - - - - - - -

   

 

Webcast Test System, With Quality Monitor Overlay
and Firewall Tester for the Mac and PC (Adobe Flash Required)


 

Quick Fix List

(1) Close your browser and reopen your browser, re-visit the event URL. Why? Functional elements/plugins, like the Adobe Flash Player might have crashed or become unstable, especially if the browser has been open for an extended period. A simple browser refresh can often solve the problem. This simple task solves most viewer issues.

(2) Close your browser and open another browser; re-visit the event URL. Why? Your browser’s security settings might inadvertently be blocking our player from loading and/or live media from being received. You could try looking through all your browsers security settings and resolving the issue yourself, or engage a local technical support resource to assist in troubleshooting. But, it’s easier sometimes to just use try another browser for the time being. Most browsers with default security settings will allow our player to load and play a live stream.

(3) Watch on your tablet or smartphone, connected over wifi or the cellular network. Why? One, your non-PC/Mac device uses different browsers and protocols for viewing a live stream, even when connected to the same wifi network. These alternative browsers and protocols (HTML5 oriented) provide another avenue for access that might not be blocked by a traditional PC/Mac browser or corporate firewall setting. Two, if you disconnect from the wifi network and use a cellular Internet, there are no corporate firewalls.


Requirements for Viewing a Live Webcast Stream from Summit Webcasting

Personal Computer running Windows XP or 7 or 8,, or an Apple Computer running OSX or greater with Flash Player 9 or greater.
This is a relatively standard requirement that a vast majority of users/viewers will meet. We also need to mention that you do need to be connected to the Internet to access live streaming media. If you cannot access google.com, it’s not likely you'll be able to access a live stream (although, you never know, google.com can go offline, from time to time, it’s rare but it happens).

A relatively current properly configured browser with javascript enabled.
This is a relatively standard requirement that a vast majority of users/viewers will meet. All major browsers (IE8-10, Safari, and Chrome) in their default configuration should play live streams served by Summit Webcasting. However, browser and network security could be inavertently set to block our streaming services. If there are any questions, try resetting your browser settings to the "default" level. Javascript must be enabled for the media player to load. Most browsers have javascript enabled.

A live streaming friendly connection to the Internet (Cellular networks are streaming friendly)
Streaming video can be blocked by corporate firewalls. In some cases, it may not be possible to watch a live stream. Consider watching from a cellularly connected Internet applance device.


Dealing With Firewalls

If live or on-demand video does not load/play, you may have a firewall issue. Using the link to the left you can conduct a firewall port test. The results of this test should be shared with the IT and network professional working to resolve accessiblity issues. If the results of this test show "success" on any port, you should be able to view this webcast video. [Success on any port does not guarantee the stream will play. If all the tests show failure, there is definitely a firewall blocking access to the video/stream.]

The above on-demand video might play while LIVE event video might not play. Live video is delivered slightly differently, and some corporate firewalls will block live streaming traffic. [Technical Note: Live streams are delivered using the RTMPT protocol which delivers RTMP via HTTP (Tunnelled). It requires slightly more bandwidth but is the best and only technique that can be used to work around firewalls blocking RTMP on ports 1935, 443 and 80. You can test protocols and ports below as needed.]


About Video Quality and Multiple Bit Rate Streaming

Quality Monitoring System Description
The quality monitoring system consists of two components. The overlay on the top of the video lists/charts the current quality metrics. Additionally, messages are presented in the middle of the screen related to a player’s decision to switch between streams (from high quality, to medium quality, to lower quality), based on Internet connectivity and computer performance.

Please note: The HD stream will not play in the window above. To view the HD stream you need to view the stream full-screen, and your monitor must have a resolution of at least 720 x 1280 pixels.

Metrics:
The bandwidth of the current connection, in kilobits per second (green).
The number of frames dropped per second (red).
The width of the video screen (blue).
The currently playing quality level including target width and bandwidth (white).

Messages:
In addition to these four metrics, the plugin displays two quality related messages in the middle of the screen, (1) the moment an actual quality transition occurs (in green text) and (2) the moment a quality level gets blacklisted, as a result of too many framedrops (in red text).

How the Player Selects and Transitions Between Streams:
The player recognizes the various levels of your video and automatically selects the highest quality one that:

- Fits the bandwidth of the server ยป client connection.
- Fits the width of the player's display (not more than 20% larger).
- Results in less than 25% *frames dropped* at any point in time.

As a viewer continues to watch the video, the player re-examines its decision (and might switch) in response to certain events:

- On a bandwidth increase or decrease, re-calculated at an interval of 2 seconds.
- On a resize of the player. For example, when a viewer goes fullscreen.
- On a framedrop of more than about 7 or 8 fps.

Framedrop is continuously monitored. Spikes are ruled out by taking 5-second averages. Once a quality level results in too large a framedrop, it will be blacklisted (made unavailable) for 30 seconds. After 30 seconds, it will be made available again, since the framedrop might be a result of a very decoding-heavy section in the video or external forces (e.g. the user opening Microsoft Office).

- - - - - - - - - - - - - - -

IP Address Serving This Live Event: 108.163.228.202. This IP address is being used to serve this live event. This IP address should NOT be blocked (RTMP on ports 1935 and 80, RTMPT port 80).