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FCP 10 bit lines problem
hi there,
ive seen a few posts on this but nothing that seems to apply to my problem in particular.
I’m capturing SD footage from Digibeta into FCP 5.1.4 using an AJA Kona card at 10 bit uncompressed.
I am then cutting before exporting the footage as 10 bit uncompressed QT which will ultimately be played to Digi for broadcast.
It is at this point that i am getting the comb lines across the picture. I have played the footage on a broadcast monitor and a CRT which still reveals the lines.
The field dominance is the same throughout the workflow and i dont want to have to de-interlace the footage as im pretty sure i shouldn’t have to.
I’m pulling my hair out…a bit.
Any ideas?
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11 Replies
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Can you post a screengrab?
If you have a lot of movement then you should see the field lines on a LCD monitor.
Peter
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here you, thanks for taking a look at this…oh and ignore the aspect ratio being wrong
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You say that field dominance is consistent, so what is it?
David Roth Weiss
Director/Editor
David Weiss Productions, Inc.
Los AngelesPOST-PRODUCTION WITHOUT THE USUAL INSANITY ™
A forum host of Creative COW’s Apple Final Cut Pro, Business & Marketing, and Indie Film & Documentary forums.
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the field dominance is set to upper in both the clip settings and the sequence setting
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Rich,
With a lot of movement that is exactly what I would expect to see.
Note how the vertical line in the wall doesn’t have the lines.Peter
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[Rich Thrift] “the field dominance is set to upper in both the clip settings and the sequence setting”
And you are working in PAL, or NTSC?
David Roth Weiss
Director/Editor
David Weiss Productions, Inc.
Los AngelesPOST-PRODUCTION WITHOUT THE USUAL INSANITY ™
A forum host of Creative COW’s Apple Final Cut Pro, Business & Marketing, and Indie Film & Documentary forums.
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Thanks Peter, i can understand that motion would give this effect but i thought that at 10 bit uncompressed it wouldnt be as obvious as it is here.
I have previously been capturing Digibeta with DVCPro 50 and have not had this problem at all, but my new company uses 10 bit uncompressed (or ProRes HQ SD which i gather is not massively different).
As i don’t current run FCP 6 on my macbook i dont have ProRes…is DVCPro 50 hugely inferior to 10 bit uncompressed at HD?
Ah and im cutting PAL for UK SD broadcast.
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[Rich Thrift] “Ah and im cutting PAL for UK SD broadcast. “
Okay, then upper is correct.
You certainly should not be seeing the interlace on your CRT.
It’s possible that your timeline settings were not set properly when the timeline was initiated. So, do a test. First, change your Easy Setup to PAL 10-bit uncompressed, then open a new timeline, now drop one of you Digibeta clips onto this new timeline. See a difference?
David Roth Weiss
Director/Editor
David Weiss Productions, Inc.
Los AngelesPOST-PRODUCTION WITHOUT THE USUAL INSANITY ™
A forum host of Creative COW’s Apple Final Cut Pro, Business & Marketing, and Indie Film & Documentary forums.
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Rich,
The codec won’t really have any effect on this apart from some blocking maybe if you were in DV, which you are not. I work in SD 16:9 PAL all the time and see this all the time when there is a lot of movement.
Have you got your canvas set to 100% if so make it 99% and see if the effect goes away.
Having said all that, it won’t hurt to check your settings again and/or apply the easy setup
Peter
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I don’t see the problem. That looks like interlacing to me. The ever standard 50i video.
This wasn’t shot progressive was it?
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