A Codec List for Video Conferencing
Raw video files can be several gigabytes in size, making video conferencing almost impossible without compressing the video from your webcam into a usable format. Video codecs take the raw audio and visual data from your webcam and compress it into a format that is small enough to be transmitted via the Internet at a high quality.
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Tandberg Codec C40
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The Tandberg Codec C40 is a hardware-based video conferencing system that transmits video conferences in 1080p high-definition streaming video. The Tandberg Codec C40 is compatible with many video conferencing websites and services, which means you can choose a service that best suits your organization's needs. You can connect up to three cameras and two audio devices directly to this device.
Software Video Codecs
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Much like digital video can be compressed into DIVX, Quicktime or Windows Media formats, there are numerous software codecs that can be used to compress your video conference. Common software video conferencing codecs include H.261, H.263 and H.264, also known as MPEG-4. All parties viewing the video conference must have the same codec installed on their computers.
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Software Audio Codecs
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Streaming audio codecs are also required when streaming a video conference that contains audio data. Common audio codecs include G.711, G.729, G.723.1, G.726, G.722 and G.728. Which audio and video codecs you need often depend on the video conferencing service or product you're use. Just like with video codecs, all parties participating in the video conference must use the same audio codecs.
Hardware Vs. Software
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Because audio and video codecs are proprietary to the service you use, you must make the choice between using a software program or purchasing hardware for your organization. The advantage for hardware systems lies in their ability to be used on multiple services, letting you decide which service best fits your organization's budget. Software conferencing services are easily distributed to all parties participating in the video conference, but you may be locked into using a specific service.
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References
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