Comcast has begun constrict high-definition television shows to deliver more HD channels to you while using the same amount of bandwidth . They did n’t use to do this before , but now , when liken to Verizon FiOS , the channels are granular and blocky and full of artifacts — a outcome of shove three channels into a space where only two antecedently busy . A guy at AVSForum measured how the newfangled bitrate stacks up against Verizon .
DVice has a side - by - side of the FiOS vs. Comcast comparing as well , and things look somewhat damn ugly .
The forum card tell that the densification is n’t too horrible with still images , but gets really high-risk when stuff be active around .
The greatest differences are see with movement . With slow movement on Comcast , the first thing you notice is add interference and a softer image , as okay detail is filtered from the word-painting signaling . The greater the pace of trend , the more detail you fall back and the more noise you see . With vivid movement , you see more blocking and skitter frames . In VideoRedo , I notice that a number of frames in the FiOS signal simply did not live in the Comcast signal during motion intensive scene . This may be responsible for for the stutter and excessive motion blur seen with some video sequence on Comcast .
To Comcast ’s credit , I see little to no difference on movie channels such as HBO , Cinemax , and Starz . I did see some blurring and reduced detail during flying movement on Starz , but the recordings from Cinemax and HBO were virtually identical , even on military action movies such as 300 and Gladiator . When there was blocking on the Comcast feed of Cinemax , that blocking was also on the FiOS feed .
[ AVSforumviaDVice ]
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