Digital Cable Vs. Satellite Picture Quality
A variety of different factors should be considered when you are trying to choose between digital cable and satellite TV service. With pressure from consumers and competitors, these services have tried to increase the numbers of HD channels by decreasing the quality of its broadcasts. With all the discussion about picture quality, a few important considerations can help you make a more informed decision.
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Basics
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In comparing video quality between satellite and cable providers, it is important to understand the ways they provide the signal to you. Both types of providers are slaves to their own bandwidth. In essence, there is only so much space available on their networks. With the advent of high definition programming and the large amounts of bandwidth demanded, that space is more precious. In cable's case, the need to also carry analog (basic) cable feeds, telephone and Internet service as well has made the problem even more pronounced.
Squished
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The way providers get around this logjam is video compression. In plain words, the video is compressed digitally as it is delivered and then uncompressed by your cable or satellite box. This saves space, but also can drastically lower video quality. Several online studies have revealed that cable is the worst offender in this category, sometimes decreasing the quality by as much as 40 percent.
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Resolute
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Also, in the mix when discussing picture quality is the subject of resolution. Resolution describes the number of lines that make up the image on the screen. High definition requires at least 720 lines of resolution (720p). Currently, HD maxes out at 1080 lines (1080p). Most cable companies do not offer full 1080p service currently. That should change in the future, as most HDTVs sold in the last two years are 1080p. Satellite providers do offer 1080p resolution on their service.
Not So Fast
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Resolution would seem to be an obvious victory for satellite. This can be misleading. Though resolution can be higher on satellite, most networks are not filming their shows in 1080p, so while the broadcast could be 1080p, the actual sources are not. This means that just because it is available in 1080p from your provider does not mean that you are getting native 1080p quality.
Location...Location...Location
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The picture quality of these services can also be affected by location. Some homes have poor views of the skyline, which can affect the ability of the satellite to receive signal. Conversely, the quality of wiring and signal strength in some homes and neighborhoods make cable images freeze, drop out or become pixilated with frustrating regularity. In fairness, these are technical problems rather than inherent picture quality disparities, but I think it is worth mentioning.
Nailed
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Overall, it is likely that most consumers will find satellite's overall picture quality better. The most important thing is to trust your eyes. A better picture should be discernible even to untrained eyes. It will not be easy, however. You may find that trying to make a firm decision about providers is difficult.
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