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Field flicker enigma
Hey guys; I’m cutting a DVPAL sequence – The sequence plays fine on my monitor but when I watch the sequence playout on my tv ( FCP – fIREWIRE – DVCAM Deck – TV ) there seems to be a stray field /disturbance in some cuts. When I comb through frame by frame over the cut there is no disturbance.
It only occurs in some cuts, I’ve moved the in & out points on the master clips back and forward, de-interlaced/played with the field dominance & shifted fields but the disturbance remains ?
I have exported and burnt a dvd and the final product contains the same problem ?Appreciate any help
-Rob -
8 Replies
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In PAL only DV codec is lower field. What are your sequence settings and what is the field dominance set to on your clips?
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The sequence is the DVPAL preset (with lower field dominance) and the clip was captured with the DVPAL Capture preset (also with lower field dominance) ?
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The fact that the problem is on a burned DVD is strange. Your external monitoring is not ideal and I am not surprised it doesn’t show on the computer monitor.
When you say it appears on a DVD, are you using the composite output from the DVCam to a DVD recorder or are you making a DVD via compressor etc. What I am trying to establish is if there is a monitoring issue or if the problem is within FCP. The other thing to check is if there are any plugins on the errant clips and that all is rendered.
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There are no plugins being used; and when I create a DVD via Compressor to DVD studio pro the issue is there on the final DVD ?
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Hi
What was the source of your capture?
I’ve seen what you describe on captures from archive footage – specifically telecined ex-film footage which has been converted from 24fps, with odd split-field behaviour due to the added pull-down. -
Perhaps I’m wrong, but I thought that PAL dv was upper field first. I’m guessing your field order is screwed up.
Dave
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>Perhaps I’m wrong, but I thought that PAL dv was upper field first.
David, all the regular standard def DV based codecs are lower field first regardless of PAL or NTSC flavor.
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Andy,
Thanks for the correct info. I don’t know why I thought the way I did.
Rob, after more thoroughly reading your original post, it appears you’ve followed your checklist properly so I admit to being stumped. At first I thought Compressor was messing up your field dominance a I’m having that exact problem with the CinemaCraft plugin in Compressor (started since I last updated CinemaCraft…need to reinstall or revert to a prior version).
However, since you mentioned that you are seeing this while monitoring, I’m a bit perplexed.
Perhaps copying/pasting into a new PAL sequence will fix it up
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