10 reasons to ‘cast rather than ‘conference
Wednesday, August 11th, 2010To a newcomer, the world of webcasting may seem a lot like web conferencing. It’s true that some of the features overlap. So does it follow that the two technologies might be more or less interchangeable? Well as you may have guessed already, we’re here to tell you that’s not always the case.
So how do you decide when to use one technology over the other? Consider this the top 10 reasons why webcasting is different from web conferencing, and how it would apply to your specific needs.
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Meetings vs. presentations.
The primary concern for conferencing technologies are small, highly-interactive meetings. Webcasting tools on the other hand focus on presentation capture and streaming (e.g. for lectures and seminars). As you can imagine, the two have rather different agendas. Web conferencing centers on real-time interactivity and collaboration (i.e. heavy two-way communication). Webcasting on the other hand gives priority to scalability for delivery to a large number of viewers – as well as to video quality, on-demand recording, publishing and post-production.

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Transparency to speakers.
In webcasting, speakers do not need any special software or specific training to be able to present. This is beneficial because the people presenting tend to be such a diverse group, each with different levels of comfort with technology. With webcasting technologies like ePresence, they can just plug in their laptop and present as they normally would.
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No special software for viewers.
Some web conferencing providers require viewers to download proprietary software in order to participate in conference sessions. Possible compatibility issues aside, this is another task that is placed on the viewer. Webcast providers tend to utilize browser plug-ins instead (e.g. Flash, Silverlight), which are used by many other applications. ePresence, for example, currently uses Flash, which most viewers already have installed on their systems.
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Picture and audio quality.
Some web conferencing systems stream in lower resolution video to reduce the bandwidth load on participants. Again, because of the heavily two-way nature of web conferencing the priorities are different: since everyone streams to everyone, bandwidth is a limited resource. Webcasting technologies deliver one stream to many viewers. In turn it can afford to deliver much higher quality audio and video – including HD. Audio quality is also a factor to consider. Often phone conferencing or VoIP will be used in web conferences to accomplish communication. Although perfect for small-group discussion, VoIP can be unreliable and not production worthy, making it less than satisfactory for important presentations.
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Reliance on Internet connectivity.
A connection to the internet is not always guaranteed. Unfortunately it often seems that network stability conspires with Murphy’s Law to come crashing down right when you need it most. Webcast hardware cannot control your connection to the Internet, but it can offer a backup. While the presentation is being streamed live to your viewers it is also being captured locally, even when your connection to the Internet drops. Once Internet access is regained you can resume streaming your presentation, then publish a seamless archive for on-demand viewing. If the Internet drops during a web conference, not only are there gaps in the live presentation, but in the resulting archive as well.
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Media content ownership.
When you subscribe to Software as a Service (SaaS) solution such as web conferencing, you often rely on that vendor’s storage for access to recordings. If you are no longer willing to continue with that vendor you can lose those presentations. With webcasting solutions such as ePresence, there is always the option to own the system and therefore own your content – so if you leave ePresence your content leaves with you.
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Scalability.
Webcasting is one-to-many, which means it’s designed to grow – both with the number of capture clients that can be used simultaneously, and with the number of viewers that can access the webcasts at the same time. Web conferencing is a many-to-many streaming technology, so bandwidth consumption can increase exponentially with each additional participant. Therefore costs seem to rise significantly along with the number of viewers. Even when the web conferencing provider can offer hundreds of ‘seats’ they still tend to fall short of the goal, with the stream becoming unreliable after 20 or so people.
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On-demand media repository.
Meetings don’t often need to be edited or easily searchable. However both those features can be quite helpful with presentations. Webcasting solutions often offer a searchable repository of your content along with some form of a post-production tool. In addition, webcasting technologies focus on the ability to easily publish high quality archives of live sessions, so those that missed out on the live webcast can catch it on-demand.
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Automation.
If you often need to stream, record and publish recurring events you can benefit from having an automated deployment. Many of the more popular webcast providers, including ePresence, offer an “automated-mode”, in which you may pre-schedule event sessions and have the webcast stations execute automatically – no manual interaction required.
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Pricing models.
One of the most attractive aspects to web conferencing solutions are their relatively low entry price points. However, what is inexpensive up front does not always translate into what is inexpensive always. The initial cost for webcasting technologies are higher because you are purchasing to own, i.e. buying hardware and software. This will save money in the long run though – especially with increased use and larger participant numbers.
In the end it is up to you to decide what it is that you need. One technology is not better at everything. Another equally valid post could look at all the situations where webcast solutions fall short for your online delivery needs.
Often the best solution to encompass all your needs is to use a little bit of both: web conferencing for collaborative small meetings, and webcasting for scalable presentation delivery.



