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    Invelos Forums->General: General Home Theater Discussion Page: 1 2  Previous   Next
HD Problem
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DVD Profiler Unlimited Registrantdavidperez
Registered: March 18, 2007
Posts: 89
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I ordered We are Marshall on ON-Demand from my cable supplier and was not impressed. The close ups and the slow moving shots were great but the actual game shots and the running shots were pixelated or blurry. I dont know the correct term for it, but basically it was bad. I have an HD rear projection tv (57" Hitachi) I have the HD cable box from Comcast (Motorola) and the settings on the box are set to 1080i. When I watched discover channel it looks amazing but for some reason this didnt look very good at all. The box is connected to the tv using Monster Component cables. The reason I am worried about it is that my "upconverting" dvd player is busted and we are considering buying a Blue Ray player. I dont want to spend $500 and get the same kind of picture I am getting with my cable box. The Blue-Ray will be connected using and HDMI cable not component. So is it the cable box? The tv or just the fact that anything there is a fast moving seen I will see this drop in quality. Thanks, David
DVD Profiler Desktop and Mobile RegistrantStar Contributorcmaeditor
Registered: April 14, 2007
United States Posts: 433
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Was the On Demand in HD? Most cable companies have just SD material in their on demand library. I would suspect you were seeing a SD image upres'd badly by the cable box. Also another thing of note is that cable SD signals are not full SD resolution either. SD is 720x480 and most digital cable signals are 480x480. satellite SD is slightly better at 540x480.
Chris
DVD Profiler Unlimited Registrantdavidperez
Registered: March 18, 2007
Posts: 89
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According to the movie title and the section of OnDemand that I ordered it from it was an HD movie. The tv also said it was getting a 1080i input. When I watch something that is not HD the tv will say its 480i.
DVD Profiler Desktop and Mobile RegistrantStar Contributorcmaeditor
Registered: April 14, 2007
United States Posts: 433
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Ok. My guess is that the on demand library is more heavily compressed than the regular channels. Why that is may be due to the bandwith on the servers that the on demand material is stored on.
Chris
DVD Profiler Unlimited Registrantdavidperez
Registered: March 18, 2007
Posts: 89
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I see, so I shouldnt see this when I purchase a Blu-Ray player and watch a Blu-Ray dvd?
DVD Profiler Desktop and Mobile RegistrantStar Contributorcmaeditor
Registered: April 14, 2007
United States Posts: 433
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I have watched both HD DVD and Blu Ray discs on a Sony rear projection TV about that same size as yours and I haven't noticed any pixelation or blurring while watching them. In fact the image off both looks better than most OTA HD signals from the TV networks or DirecTV.
Chris
DVD Profiler Unlimited RegistrantStar Contributorruineddaydreams
Registered: Dec. 2, 2002
Registered: March 14, 2007
United States Posts: 1,338
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i would agree - this is absolutely a bandwidth / compression issue w/your cable co... blu-ray and hd-dvd when mastered right (which most are) look amazing!
-JoN
DVD Profiler Unlimited RegistrantAscended_Saiyan
A Blu-ray crack fiend
Registered: March 13, 2007
Posts: 1,127
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cmaeditor is most likely correct.  They have very limited bandwidth.  I don't believe most cable provide have started to switch over from MPEG-2 to AVC.  The HD bandwidth limit is a little over 19Mbps (that's for video AND audio).  That's what happens when you you don't have enough bandwidth for the content they are providing.  It should be less of a problem when they EVENTUALLY switch over to AVC for encoding the video.

In contrast, Blu-ray has 40Mbps for video alone and a buffer that allows up to 50Mbps bursts.  You won't see pixelated pictures like your On-Demand cable provides you with on Blu-ray.  There is a good amount of bandwidth with Blu-ray.  We can always use more bandwidth, but right now Blu-ray offers the most to consumers.
To err is human...
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473 Blu-ray Titles
DVD Profiler Unlimited RegistrantOverseer
Where's my damn statue?!
Registered: March 17, 2007
United States Posts: 175
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Quoting Ascended_Saiyan:
Quote:
In contrast, Blu-ray has 40Mbps for video alone and a buffer that allows up to 50Mbps bursts.  You won't see pixelated pictures like your On-Demand cable provides you with on Blu-ray.  There is a good amount of bandwidth with Blu-ray.  We can always use more bandwidth, but right now Blu-ray offers the most to consumers.

Must you turn this thread into another useless debate on formats??? 
Gotta nip it in the bud, Andy!
DVD Profiler Unlimited RegistrantAscended_Saiyan
A Blu-ray crack fiend
Registered: March 13, 2007
Posts: 1,127
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There is nothing to debate here.  These are specs.  Look them up.
To err is human...
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473 Blu-ray Titles
DVD Profiler Unlimited RegistrantOverseer
Where's my damn statue?!
Registered: March 17, 2007
United States Posts: 175
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I really understand why people block you now.  Trolling forums with your useless Blu-ray crap.
Gotta nip it in the bud, Andy!
DVD Profiler Unlimited RegistrantRifter
Reg. Jan 27, 2002
Registered: March 13, 2007
United States Posts: 2,694
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Quoting davidperez:
Quote:
I see, so I shouldnt see this when I purchase a Blu-Ray player and watch a Blu-Ray dvd?


Not necessarily.  What is the response time of your TV?  If the action is moving faster than the TV can react, its noticeable.  The type of display (plasma vs LCD, etc.) also has a factor in the picture quality.
John

"Extremism in the defense of Liberty is no vice!" Senator Barry Goldwater, 1964
Make America Great Again!
DVD Profiler Desktop and Mobile Registrantleo1963
Registered: May 14, 2007
United States Posts: 455
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The biggest issue here is the provider "Comcast".  A piece of worthless crap. Never trust comcast for they don't know what they are doing and will tell you what you want to hear and will never tell you the truth.  I have caught comcast is many many lies.  Direct TV or AT&T U-verse is the only way to go.
DVD Profiler Desktop and Mobile RegistrantDr. Killpatient
Here's my card
Registered: May 19, 2007
Reputation: Highest Rating
United States Posts: 5,916
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I'm waiting for Verizon to start serving FiOS TV in my area, then I'm dumping Comcast.
DVD Profiler Unlimited RegistrantRifter
Reg. Jan 27, 2002
Registered: March 13, 2007
United States Posts: 2,694
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Quoting leo1963:
Quote:
The biggest issue here is the provider "Comcast".  A piece of worthless crap. Never trust comcast for they don't know what they are doing and will tell you what you want to hear and will never tell you the truth.  I have caught comcast is many many lies.  Direct TV or AT&T U-verse is the only way to go.


Oh, great!  I just found out that Insight Broadband, my cable/phone/internet provider has been bought out by Comcast and will be changing over on Jan. 1.
John

"Extremism in the defense of Liberty is no vice!" Senator Barry Goldwater, 1964
Make America Great Again!
DVD Profiler Desktop and Mobile RegistrantStar ContributorNewEnglander
Registered: 11/13/2003
Registered: March 13, 2007
Reputation: High Rating
United States Posts: 1,911
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Quoting Rifter:
Quote:
Quoting leo1963:
Quote:
The biggest issue here is the provider "Comcast".  A piece of worthless crap. Never trust comcast for they don't know what they are doing and will tell you what you want to hear and will never tell you the truth.  I have caught comcast is many many lies.  Direct TV or AT&T U-verse is the only way to go.


Oh, great!  I just found out that Insight Broadband, my cable/phone/internet provider has been bought out by Comcast and will be changing over on Jan. 1.


John, it all varries by region. I have Comcast and have no complaints. HD is uncompressed, they pass along what they are sent from the provider.
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