Ever asked yourself when will video calling or even voice calling become something prevalent over the internet? I am afraid that the answer is “not so soon”. For this to happen, there are two distinct technologies that come to play: HTML5 (which is still in its early days) and Flash (which is installed on most web browsers worldwide). HTML5 It seems like the two missing pieces to get video calling going in a browser is having the ability to receive
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By Tsahi Levent-Levi | July 5th, 2010 | Filed under Technology
Most of the time we try to obey the 3 Bs: Better, Bigger, Bolder. This is also true for our marketing activities, as well as for our blog posts. But here’s a little secret I can tell you about our industry (and not just it): when it’s time to walk the walk, we are all slaves of the almighty RFP. As our industry caters mainly for large enterprises and government agencies, a lot of the deals out there are won
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By Tsahi Levent-Levi | February 25th, 2010 | Filed under Technology
There’s a trend these days to employ Forward Error Correction (FEC) as a means to improve media quality in voice and video calls. It is also something that RADVISION has been actively pushing at the ITU-T – and will probably be added in one of the next ITU-T meetings as H.323 Annex I. When we started working on our SVC solution, and had to decide where to place the error correction data, we debated on a very basic question:
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By Tsahi Levent-Levi | December 17th, 2009 | Filed under Technology
This post is part of our Designing Hardware for HD series. Be sure to check it out! [While I've done my best to cover the various options for HD video chips and the trends in the market, I also wanted to take a deeper dive and explain how we analyze such a chip. In this case, the TI DM6467, which we have selected as the basis for our BEEHD product. For that, I asked Amit Klir, our resident video architecture
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By guest | November 16th, 2009 | Filed under HD VoIP
You’d think that when my pal Sagee finally got two whitepapers on SVC that he worked on for quite some time published, he would run and tell his friends about it (or at least mention it on his blog). Well, he didn’t – the only thing he did was let his twitter followers know. I, however, decided I should let my readers know about these whitepapers as both are a good read. “The SVC Whitepaper” The first whitepaper to read
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By Tsahi Levent-Levi | October 12th, 2009 | Filed under Technology
[We've just announced our Samsung-RADVISION VC240 HD videoconferencing LCD monitor and our BEEHD videophone engine. What we've noticed is that customers tend to ask a lot about our video codec in these products. Amit Klir, our "resident media specialist" for BEEHD explains what makes the video codec in our client product so great] As when giving a gift, customizing it makes the gift so much more effective: the same hold true with video codecs. When looking for one, you need
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By guest | June 22nd, 2009 | Filed under Clients, Technology
[Amit Lavi is the product manager of BEEHD, our brand new product which lets you develop high definition videophones a lot faster. He took the time to write this guest post in order to present the new BEEHD to you] Video is becoming an integral part of our lives – you can see it everywhere. There are users who film, upload and publish their videos online to people wanting to communicate visually with others – either through software applications or
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By guest | June 16th, 2009 | Filed under Clients
[Amir Zmora is now on his way to InfoComm and is as excited as I am about the announcement of the new HD Video Conferencing Desktop Solution, which was a RADVISION and Samsung joint project. He wanted to share his enthusiasm with you and he is waiting to hear your feedback about this new and innovative project.] As I’m getting ready for the long flight from Israel to Orlando, I’m all excited about the announcement of the joint project between
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By guest | June 15th, 2009 | Filed under Clients
Anatoli already did a great job of covering the HD Communication Summit – a very successful gathering of people from our industry, trying to (re-)push towards the use of wideband voice codecs for VoIP services, so that we will once and for all be able to hear each other properly. While most experts will explain that HD voice is more than just a codec (for all the good reasons), the main obstacle that I see here is actually THE codec. Or rather the lack of THE codec. Take a look at the following list of wideband codecs I’ve gathered here from the top of my head: G.722 G.722.1 G.722.1 Annex C G.722.2 Siren 14 Siren 22 AAC-LD AAC-LC Skype’s SILK And I’m sure there are more – I am no voice codec expert myself. These codecs vary in a lot of different ways, such as sampling rate, bit rate, computational needs, etc. And still – they are all wideband codecs, suitable for “HD Voice”. Take a look at HD Video – there is only one de-facto codec: H.264. You might use the AVC flavor of it, or the new SVC flavor; but H.264 is THE codec. Until we come to terms about THE codec for HD voice, we will continue to just talk about making it a commonplace.
By Tsahi Levent-Levi | June 4th, 2009 | Filed under Standardization
[The world is moving to video, so if you're dealing with VoIP communications and video is on your radar, there are some terms you probably need to know. I have asked Amit Klir, who is one of our video experts to compile a short list of the most essential terms in video coding.] As video over IP is becoming commonplace, more and more people are becoming involved with video applications development, integration, deployment and administration. As complicated as video
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By guest | December 11th, 2008 | Filed under Interoperability, Technology
