The Yorktel webcasting platform supports live and on-demand webcast presentations on desktop computers, laptops, tablets, and mobile devices such as Apple iPhone, iPad and other iOS devices, and on-demand viewing from Blackberry and Android mobile devices. To successfully participate, your computer or device will require the ability to view video, play audio, and connect to the Internet, and meet the following minimum requirements:


Microsoft® Windows

• Windows 2008, Windows 7, Windows Vista, Windows XP, Windows 2003

• Internet Explorer® 9.0 or later (including Internet Explorer 10 on Windows 8)

• Windows Media® Player 9.0 or later


Firefox® 3.6 or later, or Google™ Chrome

• Windows Media® Player 9.0 or later

• Microsoft Silverlight® 5

• Broadband Internet connection


Apple® Mac® OS

• Apple Mac OS X 10.5.7 or later

• Apple Safari® 5 or later or Firefox 3.6 or later

• Microsoft Silverlight 5

• Broadband Internet connection


Linux® (on-demand playback only)
OpenSUSE 11.0 or Ubuntu with the following:

FFmpeg plugin

• Chromium web browser


Additional Notes

Internet Explorer 9 with Compatibility Mode We have seen anomalous behavior for some viewers using IE9 with compatibility mode on. We recommend turning this off whenever possible. IE9 in compatibility mode makes the browser behave as though it was IE8. Our webcast platform has elements of HTML-5, which are unsupported in IE8.

Silverlight – If you’re using Microsoft’s Silverlight Players or a browser that uses the Silverlight Plugin (such as FireFox or Google Chrome), you must have Silverlight version 5.0 or later installed. You can download Silverlight for free at:

Internet – Webcasts will look and sound best when viewed over a broadband Internet connection of 900kbps or greater sustained bandwidth. You can confirm your available bandwidth for free by running the bandwidth test available at


Network Firewall Considerations – Some network administrators block streaming media at the firewall. If you are unable to view streaming video, you may need to notify your network/IT administrator. The following firewall ports may need to be opened for proper webcast viewing: TCP/80, TCP/1755, UDP/1755, TCP/554, and UDP/554. Packet shapers, VPN’s, and/or proxy servers can also cause adverse effects on live streaming. These should be bypassed if possible.

Additionally, streaming may be blocked if firewalls deny the MMS or RTSP protocol. Some network security policies restrict or filter content based on site URL (this is sometimes referred to as “white listing” a domain). Webcast content will be served from the and domains and traffic from both domains need to be allowed.


Wireless Card Users – The recommended workflow for any webcast is to use a hardline whenever possible. WiFi and wireless cards are vulnerable to atmospheric conditions such as interference from radio/microwaves, EM fields, and other electronic noise. Viewing conditions can change suddenly and without warning even if your signal is indicating a good connection. That being said, some viewers may have no choice and must use WiFi or wireless cards. A common viewing issue experienced with wireless cards can be corrected with the following:


To address issue with opening video over Verizon aircard, open up Windows Media Player (independently, not within IE), open settings box, and make sure the box below is checked.




Please use the following link to test your specific systems’ hardware/software compliance


You can test your system’s audio and video by viewing the following on-demand test webcasts:


Windows Media sample:


Silverlight sample:

Not all webcasts include the option to stream to mobile devices. If your webcast includes mobile streaming, your device must meet the following minimum requirements:

iPad® requirements

iPad (any model)

iOS 4.3 or later

• Apple Mobile Safari™

• Wi-Fi or cellular data connection (3G or higher)


iPhone®/iPod® requirements

iPhone 4 or later, iPod Touch 4th generation or later

iOS 4.3 or later

• Apple Mobile Safari

Mediasite Mobile app (free download available from the Apple® App Store)

• Wi-Fi connection


Android(on-demand playback only)

• Android 4.0 or later

• Android browser

• Wi-Fi or cellular data connection (3G or higher)


BlackBerry® (on-demand playback only)

• BlackBerry devices running BlackBerry OS 7.0 or later

PlayBook™ devices running QNX

• Blackberry browser

• Wi-Fi or cellular data connection (3G or higher)

You can test your mobile device’s audio and video by viewing the following on-demand test webcast: