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Panasonic DVX / DVC Assistant
The 4K DVX200 plus previous Panasonic Pro Line cams: DVX100A, DVC60, DVC30.


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Old April 29th, 2006, 09:38 AM   #1
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dvx100 diagonal line resolution

Using my DVX100BE in progressive mode, I have found these lines appearing occasionally (look at the red guitar on the video capture). I realise this is caused by the low resolution (pal, 720 x 576), but in some cases like this it seems far from optimal. Has anyone noticed this too, and played with some of the settings to improve the image? There are a bunch of settings in the dvx, maybe one of them helps improve the rendition of diagonal lines?

Help appreciated.
Thanks

http://img53.imageshack.us/img53/7817/dvx100b11kl.jpg
Chris Suzor is offline   Reply With Quote
Old April 29th, 2006, 09:54 AM   #2
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Isn't that colour bleeding? Reds in ntsc bleed into everything and is considered quite normal, don't know about pal tho.
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Old April 29th, 2006, 02:27 PM   #3
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those jaggies can be caused by quite afew different elements.

mainly its the detail settings on the cam, so turn coring up to 5 or so, then drop your detail to -1

u can also mess with teh V detail if u like and this will smooth or ramp those jadggies a lil better.
Another hting, is what NLE are u using to grab that screenshot? Vegas doesnt play nice with 4:3 DV when u turn on the simulate device aspect

thats not bleed through, thats detail aliasing..
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Old April 30th, 2006, 02:18 AM   #4
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Thanks for the advice. This was shot with these scene settings

DETAIL LEVEL -2
V DETAIL LEVEL 0
DETAIL CORING +2
CHROMA LEVEL +2
CHROMA PHASE 0
COLOR TEMP 0
MASTER PED 0
A. IRIS LEVEL +0
GAMMA NORMAL
KNEE LOW
MATRIX NORM1
SKIN TONE DTL OFF
V DETAIL FREQ MID
PROGRESSIVE 25p

I could change V DETAIL LEVEL or V DETAIL FREQ, but I don't have a good understanding of either of these settings, nor which way would help... Can someone explain please? For low light shots, I set DETAIL CORING +5, to reduce the noise. I am also experimenting with CINELIKE for GAMMA and MATRIX, but that is whole different shooting style.

Thanks
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Old April 30th, 2006, 09:18 AM   #5
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those settings all seem ok, but even with that, you shouldnt get this stepping... to me, it looks like u took teh capture frmo Vegas and ahve set yoru preview to simulate device aspect, which sets the correct aspect for your preview (but not your footage. In turn causing certain stepping for Pal DV... turn OFF the simulate device in vegas and the problem goes away
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Old May 1st, 2006, 11:57 AM   #6
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Quote:
Originally Posted by Peter Jefferson
those settings all seem ok, but even with that, you shouldnt get this stepping... to me, it looks like u took teh capture frmo Vegas and ahve set yoru preview to simulate device aspect, which sets the correct aspect for your preview (but not your footage. In turn causing certain stepping for Pal DV... turn OFF the simulate device in vegas and the problem goes away
Perhaps I don't understand what you're saying Peter... I have the project at 1.0926 aspect ration (PAL DV), but no matter what setting I use (1 square, 0.9091 NTSC DV, etc), the intercrossed red and black lines on the edge of the guitar don't go away.

I first noticed these lines after converting the DV to MPG2 and watching through windows media player, so I thought WMP was the problem, but sure enough the lines are there in Vegas.

I will have to experiment with the V DETAIL settings a little to see if I can make the problem less obvious, without affecting the rest of the image too much. Has anyone experimented with the V DETAIL settings?


PS. I found the "simulate device aspect ratio", but it was unchecked already. Checking it has no effect on the lines, they are still visible.
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