In the Skype 3.6 beta releases, it was possible to manually activate the higher resolution video with cameras other than the three Logitech cameras mentioned in this article. It was proven in the Skype User Forums that a variety of other webcams were capable of 640x480 resolution video, both from Logitech and from other manufacturers. With the 3.6 production release, this manual activation capability has been removed, so only users with one of the three specific Logitech cameras will be able to benefit from higher resolution video. It is surprising that Skype has decided to relegate the majority of their existing users who own webcams to "second class status", apparently only because of a marketing agreement with Logitech. If the Skype/Logitech "High Quality Video" is truly superior, as they say, then why not let it stand on its own merits, and allow users with other webcams to benefit from the improved resolution? One would think that this would encourage more webcam owners to start using Skype for video calls, and probably encourage more users to buy the "better" Logitech cameras, when they see how good High Quality Video can be.
This is not as easy as you might think it is. I have worked in this domain for several years and to get real-time videoconferencing at this resolution on a PC you need several optimizations. The H.264 codec is very greedy in CPU. It's likely that Logitech developed a camera access optimization algorithm to help minimize overhead created by Windows generic hardware API.
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Why the unnecessary restriction?
In the Skype 3.6 beta releases, it was possible to manually activate the higher resolution video with cameras other than the three Logitech cameras mentioned in this article. It was proven in the Skype User Forums that a variety of other webcams were capable of 640x480 resolution video, both from Logitech and from other manufacturers. With the 3.6 production release, this manual activation capability has been removed, so only users with one of the three specific Logitech cameras will be able to benefit from higher resolution video. It is surprising that Skype has decided to relegate the majority of their existing users who own webcams to "second class status", apparently only because of a marketing agreement with Logitech. If the Skype/Logitech "High Quality Video" is truly superior, as they say, then why not let it stand on its own merits, and allow users with other webcams to benefit from the improved resolution? One would think that this would encourage more webcam owners to start using Skype for video calls, and probably encourage more users to buy the "better" Logitech cameras, when they see how good High Quality Video can be.
This is not as easy as you might think it is. I have worked in this domain for several years and to get real-time videoconferencing at this resolution on a PC you need several optimizations. The H.264 codec is very greedy in CPU. It's likely that Logitech developed a camera access optimization algorithm to help minimize overhead created by Windows generic hardware API.