Poor quality when rendering dv in a mixed-format project

[John Pale]

[thefreak] ” The IMX pictures looks fine but whenever I use, and render, the DV-material it looses quality compared to what it looks like originally on the monitor. So something is clearly not right in the conversion.”

Are you capturing the DV through your Decklink SDI or Firewire? If you are using firewire (and rendering), the field order of the DV might be getting messed up because natively it is 720 x 480 rather than 720 x 486 (as your 8 bit stuff is). Try moving it up one line in the motion tab, then render…then see what it looks like.

[Peter Frick]

I work in Pal 720 X 576 sorry forgot to tell you.
Peter

[Peter Frick]

Again I use Pal and I’ve imported it through firewire and you’re right it looks like some kind of field problem. I’m not sure when you say move it up in the motion tab what do you mean by this?
Peter

[Mark Maness]

Double-click on your clip to get it into the viewer…. Go to the Motion tab and look at the coordinates of your clip. Sometimes your clip is adjusted one pixel up or down which can cause this problem. Other times, it needs to be adjusted up or down one pixel to correct this. I would have to say that FCP has automatically adjusted your video one pixel and you need to set these numbers to zero and re-render.

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Wayne Carey
Schazam Productions
http://www.schazamproductions.com

[Rick Diamond]

Capture the footage as 8-bit uncompressed. If you capture as DV and then render the DV footage on an uncompressed timeline it looks like crap.

Rick

[Daryl K davis]

I’ve found DV captured over firewire and dropped in an uncompressed timeline looks fine – PROVIDED you have the correct field order set which may involve moving the clip up or down 1 line in the motion tab settings.

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DK Davis / Editor/ Post Super
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[Peter Frick]

I have tried what you suggested, except recapturing. None of it seems to work I’m afraid. I’m working in 16:9 could this affect the issue?
Peter

[Peter Frick]

problem solved. Thanks guys for pointing me i the right direction. It did not work (strangely) with working in the motion tab. However, I choose the shift fields filter (under videofilters, video) and chose -1 that solved the problem.
Peter