NBC Fireworks in HD, Wimbledon, Mbps data?

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At 12:36 AM -0400 07/05/05, Rodolfo La Maestra wrote:
>----- HDTV Magazine Tips List -----
>
>Without meaning to sound negative to such important event, I would
>like to get into the picture
>quality subject:
>
><deletia>
>My eyes told me that, as usual, WETA PBS HD (and the 3 simultaneous
>sub SDs) had shown deficiencies
>on certain scenes like active reds, sporadic flashes of faster
>fireworks that macroblocked, although
>I should say that the event (as well as NY's) was so patriotic that
>for once I did not mind seeing
>those artifacts in HD.
>
>In general the picture was soft, with some granularity, camera shots
>in day light at the crowd where
>less defined (like from film cameras) than the illuminated stage,
>and about 5% of scenes with
>artifacts, macroblocking.

Well, bright flashes will always choke an MPEG encoder, so you'd have
to have some pretty high bandwidth, or good filtering to not see
macroblocking. But, certainly low broadcast bandwidth would increase
the likely hood of macroblocking.

erik g

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Hi Rodolfo,

My reference is D-Theater since I cannot depend on Broadcast HDTV to
present me with it's full potential.

I did not watch these events but it seems anything via satellite is bit
starved in my experience. As you point out your PBS is doing multicast
bit starving your OTA HD.

The D-Theater Yes and Motely Crue performances were shot with HD cameras
and have similar problems as you describe for flashy content. The strobe
lights create quite a mess from the camera as an example.

Richard Fisher
www.HDLibrary.com Published by Tech Services
A division of Mastertech Repair Corporation

Rodolfo La Maestra wrote:
> ----- HDTV Magazine Tips List -----
>
> DC/VA area got the Capitol Fireworks in HD via PBS WETA, as well as NBC's HD with NY. Very
> enjoyable indeed.
>
> Without meaning to sound negative to such important event, I would like to get into the picture
> quality subject:
>
> I wonder if the Tips List person that customarily measures Mbps (my apologies, I believe his name is
> Steve but frankly I can not remember well) had a chance to also get the broadcast program and
> measure its bandwidth.
>
> My eyes told me that, as usual, WETA PBS HD (and the 3 simultaneous sub SDs) had shown deficiencies
> on certain scenes like active reds, sporadic flashes of faster fireworks that macroblocked, although
> I should say that the event (as well as NY's) was so patriotic that for once I did not mind seeing
> those artifacts in HD.
>
> In general the picture was soft, with some granularity, camera shots in day light at the crowd where
> less defined (like from film cameras) than the illuminated stage, and about 5% of scenes with
> artifacts, macroblocking.
>
>
> While we are it, I would like to know if this person measured the Mbps on the DirecTV version of the
> Wimbledon final versus the broadcast version, both upconverted to 16x9 with side pillars.
>
> I noticed the network version showed a bit more punch on the image, more noticeable on the white
> court lines. Even when the video image did not originate as HD in England, and was upconverted to
> 1080i 16x9, it was evident (to my eyes) that DirecTV compressed/bit starved their version or did
> something else that affected a bit the detail, making the image a bit softer as well, although the
> magic of Federer made me forget the subject rather quickly, and reminded me how blessed we are to
> been able to enjoy HD in the US.
>
> Thanks in advance if you have that data.
>
> Richard, since we both are quite picky regarding image quality and identifying errors, I would
> appreciate your comments on both events if you had the chance to do the comparisons/viewing I did.
>
>
> Best Regards,
>
> Rodolfo La Maestra
>
>
>
>
>
>
>
>
>
> -----Original Message-----
> From: HDTV Magazine On Behalf Of
> David Landsman
> Sent: Monday, July 04, 2005 10:25 PM
> To: HDTV Magazine
> Subject: Re: NBC Fireworks in HD
>
>
> ----- HDTV Magazine Tips List -----
>
> Hi Robert,
>
> We did here (COMCAST - Philly). There was a problem the first minute of so -
> the rest looked good - really good. Even my wife could tell the difference.
>
> HAPPY HOLIDAY ALL!
>
> David
>
> -----Original Message-----
> From: HDTV Magazine On Behalf Of
> Robert Wade Brown
> Sent: Monday, July 04, 2005 9:22 PM
> To: HDTV Magazine
> Subject: Re: NBC Fireworks in HD
>
>
> ----- HDTV Magazine Tips List -----
>
> 7/4/2005 8:20pm ct
>
> On PBS tonight (8pm edt), "A Capitol Fourth" was supposed to be in
> HD.
> We didn't get it that way on our local PBS, which supports HD.
> Did anyone else see it in HD?
>
> Best,
> Robert
>
>
>
> At 07:01 PM 7/4/2005, you wrote:
>
>>----- HDTV Magazine Tips List -----
>>
>>Tonight... Fireworks in HD...
>>
>>ENJOY
>>
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