[opendtv] Re: Superbowl XL(1080)I
- From: "John Willkie" <johnwillkie@xxxxxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Tue, 6 Feb 2007 10:07:20 -0800
It sounds like you weren't paying attention. I didn't notice an iota of
criticism in Nick's post. I thing you've confused his post (to which I
replied) with John Shutt's posting.
John talked about macroblocking on graphics transitions.
There is much variation as to how stations transmit video. Not all encoders
are set right. It sounds like someone at WIVB got it right, but a different
case in Lansing. Maybe they were constraining bandwidth so that cable and
ota customers got the same bit rate.
John Willkie
> -----Original Message-----
> From: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx]
> On Behalf Of Craig Birkmaier
> Sent: Tuesday, February 06, 2007 6:55 AM
> To: opendtv@xxxxxxxxxxxxx
> Subject: [opendtv] Re: Superbowl XL(1080)I
>
> At 11:35 AM -0800 2/5/07, John Willkie wrote:
> >Sounds to me like WIVB-DT had the settings on their encoders set
> properly.
>
> Maybe Nick and family thought all of those blocking artifacts on the
> graphic transitions were [art of the special effects...
>
> ;-)
>
> We had several features like that in the first Grass Valley DVEs;
> these included quantization effects and blocking effects (matrix
> wipes). We nicknamed them "defects"
>
> I just replayed the first 10 minutes of the game on my Cox DVR. The
> worst artifact came from the graphics swoops, especially at the end
> of replays and team introductions. The picture remained block and
> quantized for about 1 second at the end of these "swoops." I also
> noticed a number of shots with problems (mostly close ups with rapid
> motion).
>
> On the plus side, it looks like most commercials were produced in HD.
>
> Regards
> Craig
>
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