Monday, May 16, 2011

[Avid-L2] Re: 1080 to 720 levels Q ANSWER FROM TERANEX

 

When you say Lowpass Filtering I assume you mean just switched to Lowpass instead of Flat. Is there something else I'm missing?

--- In Avid-L2@yahoogroups.com, Bogdan Grigoresco <bogdan_grigorescu@...> wrote:
>
> That's why I asked you if you're on lowpass filtering on the scope.
> That should get rid of these downconvert over/undershoots.
>
> You said it's turned on, are you sure?
>
> cheers,
> Bogdan Grigoresco
> www.finale.tv
>
> --- On Mon, 5/16/11, ksirul <kenavid2@...> wrote:
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> From: ksirul <kenavid2@...>
> Subject: [Avid-L2] Re: 1080 to 720 levels Q ANSWER FROM TERANEX
> To: Avid-L2@yahoogroups.com
> Date: Monday, May 16, 2011, 6:12 PM
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> This is the answer I got from Teranex Support:
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> The under/overshoots seen on the waveform are an expected byproduct of the video resampling performed in the Mini when the conversion is 1080P 23.98sf to 720p59.94
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> He is claiming that the entire Teranex line has this byproduct. I've always seen this when downconverting to SD and we just legalize to SD specs. It just seems odd that this would also happen going to 720p and it did not happen with the QT Ref export re-import to 720p solution I did.
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> KEN
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> --- In Avid-L2@yahoogroups.com, "ksirul" <kenavid2@> wrote:
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> > I have a film on HDCam SR 422 1080p 23.98 sf. I am trying to capture
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> > at 720p 59.94. What is happening in 720p is that whites seem to be
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> > showing at 110IRE and blacks at -10 on the scope. It is most apparent
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> > with titles. I noticed during a white title on black background. In
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> > 1080p 23.98 the white title is at 90 and black is at 0. If I switch
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> > the deck to output 1080i 59.94 everything is fine. If I use the
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> > Format converter in the deck, the levels are off. If I use the
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> > Teranex Mini to convert 1080 (i or p) to 720p I get the same problem.
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> > Any ideas?
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> > KEN
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